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The MADS-box gene RhAGL6 plays a master role in regulating the receptacle malformation in rose at low temperature
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作者 Weikun Jing Shuai Zhang +6 位作者 Qingcui Zhao Yang Liu Liangjun Zhao Junping Gao nan ma Xiaofeng Zhou Yonghong Li 《Horticultural Plant Journal》 SCIE CAS CSCD 2024年第5期1214-1229,共16页
Low temperature usually results in the developmental deformity of flower organs,immensely affecting the quality of rose flowers.However,it's largely unknown about the regulatory mechanisms activated by low tempera... Low temperature usually results in the developmental deformity of flower organs,immensely affecting the quality of rose flowers.However,it's largely unknown about the regulatory mechanisms activated by low temperature.Here,we used a low temperature-sensitive Rosa hybrida cv.‘Peach Avalanche’to screen a MADS-box gene RhAGL6 via conjoint analysis between RNA sequencing(RNA-seq)and whole-genome bisulfite sequencing(WGBS).Furthermore,we found that low temperature induced the hypermethylation and elevated histone 3 lys-27 trimethylation(H3K27me3)level on the RhAGL6 promoter,leading to decreased RhAGL6 expression.In addition,RhAGL6 silencing resulted in the formation of abnormal receptacles.We also found that the levels of gibberellins(GA3)and abscisic acid(ABA)in the receptacle under low temperature were lower and higher,respectively,than under normal temperature.Promoter activity analysis revealed that GA3 significantly activated RhAGL6 promoter activity,whereas ABA inhibited it.Thus,we propose that RhAGL6 regulates rose receptacle development by integrating epigenetic regulation and phytohormones signaling at low temperature. 展开更多
关键词 Rosa hybrida Low temperature RhAGL6 Receptacle development DNA methylation H3K27me3 PHYTOHORMONE
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A Novel Defender-Attacker-Defender Model for Resilient Distributed Generator Planning with Network Reconfiguration and Demand Response
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作者 Wenlu Ji Teng Tu nan ma 《Energy Engineering》 EI 2024年第5期1223-1243,共21页
To improve the resilience of a distribution system against extreme weather,a fuel-based distributed generator(DG)allocation model is proposed in this study.In this model,the DGs are placed at the planning stage.When a... To improve the resilience of a distribution system against extreme weather,a fuel-based distributed generator(DG)allocation model is proposed in this study.In this model,the DGs are placed at the planning stage.When an extreme event occurs,the controllable generators form temporary microgrids(MGs)to restore the load maximally.Simultaneously,a demand response program(DRP)mitigates the imbalance between the power supply and demand during extreme events.To cope with the fault uncertainty,a robust optimization(RO)method is applied to reduce the long-term investment and short-term operation costs.The optimization is formulated as a tri-level defenderattacker-defender(DAD)framework.At the first level,decision-makers work out the DG allocation scheme;at the second level,the attacker finds the optimal attack strategy with maximum damage;and at the third level,restoration measures,namely distribution network reconfiguration(DNR)and demand response are performed.The problem is solved by the nested column and constraint generation(NC&CG)method and the model is validated using an IEEE 33-node system.Case studies validate the effectiveness and superiority of the proposed model according to the enhanced resilience and reduced cost. 展开更多
关键词 Distribution system RESILIENCE defender-attacker-defender distributed generator demand response microgrids formation
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Fundus manifestations and HIV viral loads of AIDS patients before and after HAART 被引量:6
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作者 Yu Di Xin-Yu Zhao +2 位作者 Jun-Jie Ye Bing Li nan ma 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2019年第9期1438-1443,共6页
AIM: To investigate the fundus manifestations and human immunodeficiency virus(HIV) viral loads of acquired immune deficiency syndrome(AIDS) patients before and after highly active antiretroviral therapy(HAART).METHOD... AIM: To investigate the fundus manifestations and human immunodeficiency virus(HIV) viral loads of acquired immune deficiency syndrome(AIDS) patients before and after highly active antiretroviral therapy(HAART).METHODS: This retrospective study included 21 AIDS patients(42 eyes) who presented to the Department of Ophthalmology, Peking Union Medical College Hospital, from 2007 to 2011. Among the patients, 16 showed a good response to HAART, 3 presented drug resistance and 2 were pre-HAART. All patients underwent comprehensive ophthalmic examinations. The HIV viral loads and the CD4+ T-cell counts were also determined.RESULTS: The best-corrected visual acuity(BCVA) of 38 eyes(19 patients) was improved, and cytomegalovirus retinitis(CMVR) in 5 eyes(3 patients) regressed after HAART. Furthermore, 16 patients treated with effective HAART had decreased plasma HIV viral loads(<78 copies/mL)and increased CD4+ T-cell counts(343±161 cells/μL, P<0.005), but the HIV viral load in tears was still detected at 2404 copies/mL. The CD4+ T-cell count was lower in the CMVR group than in the non-CMVR group(P=0.022), but the HIV viral load in the tears was not significantly different between the two groups(P=0.439).CONCLUSION: Most patients with AIDS show a good viral response with a decreased HIV viral load and an increased CD4+ T-cell count in plasma after HAART. However, the HIV viral load remain quite high in the tear samples. Based on our results, we suggest that AIDS patients undergo long-term HAART that should not be interrupted. 展开更多
关键词 acquired immune deficiency syndrome CYTOMEGALOVIRUS RETINITIS highly active ANTIRETROVIRAL therapy human immunodeficiency virus viral loads TEARS
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Agrobacterium tumefaciens-mediated transformation of modern rose(Rosa hybrida)using leaf-derived embryogenic callus 被引量:2
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作者 Guoqin Liu Yuan Yuan +7 位作者 Hui Jiang Ying Bao Guogui Ning Liangjun Zhao Xiaofeng Zhou Hougao Zhou Junping Gao nan ma 《Horticultural Plant Journal》 SCIE CSCD 2021年第4期359-366,共8页
Rose(Rosa hybrida)is widely used for cut flowers and as garden plants.Stable and efficient transformation system is required for functional genomics of rose.Here,we established an efficient transformation method for r... Rose(Rosa hybrida)is widely used for cut flowers and as garden plants.Stable and efficient transformation system is required for functional genomics of rose.Here,we established an efficient transformation method for rose using Agrobacterium tumefaciens-mediated transformation of embryogenic callus.Expanding rose leaves were used as explants to induce somatic embryos,which were subjected to transformation with A.tumefaciens strain GV3101 using Green Fluorescence Protein(GFP)as a marker gene.It took about 8 months to generate transgenic shoots from embryogenic callus.PCR,RT-PCR,Southern and Western blotting,as well as stereoscopic fluorescence microscopy analysis demonstrated that GFP transgenes integrated stably into the rose genome.According to our data,a transformation efficiency of up to 6%can be achieved by following this optimized protocol. 展开更多
关键词 ROSE Rosa hybrida LEAF Somatic embryos Agrobacterium tumefaciens Genetic transformation
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Effect of family caregiver nursing education on patients with rheumatoid arthritis and its impact factors:A randomized controlled trial 被引量:1
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作者 Jing Li Ying Zhang +1 位作者 Ya-Juan Kang nan ma 《World Journal of Clinical Cases》 SCIE 2021年第28期8413-8424,共12页
BACKGROUND Rheumatoid arthritis(RA)is a common autoimmune disease.Nursing education for family caregivers is considered a workable and effective intervention,but the validity of this intervention in RA has not been re... BACKGROUND Rheumatoid arthritis(RA)is a common autoimmune disease.Nursing education for family caregivers is considered a workable and effective intervention,but the validity of this intervention in RA has not been reported.AIM To explore whether family caregiver nursing education(FCNE)works on patients with RA and the factors that influence FCNE.METHODS In this randomized controlled study,a sample of 158 pairs was included in the study with 80 in the intervention group and 78 in the control group.Baseline data of patients and caregivers was collected.The FCNE intervention was admi-nistered to caregivers,and inflammation level indicators,disease activity indicators and mood disorder indicators of patients were followed up and analyzed.RESULTS Baseline characteristics of the intervention and the control groups had no significant difference.Indicators were significantly reduced in the intervention group compared to the control group.The intervention group showed significant differences in stratification of relationship,education duration and age.CONCLUSION The effect of FCNE on RA is multifaceted,weakening inflammation level,alleviating disease activity and relieving mood disorder.Relationship between caregiver and patient,caregiver’s education level and patient’s age may act as impact factors of FCNE. 展开更多
关键词 Nursing education Family nursing Rheumatoid arthritis Family caregivers DEPRESSION ANXIETY
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A Valuable System with High Specificity for Evaluating both Metastasis and Prognosis of Oral Squamous Cell Carcinoma 被引量:1
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作者 Jianming Zhang Ping Gao +2 位作者 Jie Sun nan ma Sakan maeda 《Chinese Journal of Clinical Oncology》 CSCD 2009年第2期79-84,共6页
OBJECTIVE A system was established to evaluate the metastasis and prognosis of oral squamous cell carcinoma by analyzing the tumor differentiation, the TNM stage, the mode of invasion, and the expression of E-cadherin... OBJECTIVE A system was established to evaluate the metastasis and prognosis of oral squamous cell carcinoma by analyzing the tumor differentiation, the TNM stage, the mode of invasion, and the expression of E-cadherin and S100A4. METHODS Squamous cell carcinoma of the oral cavity of 86 cases was the focus of our study. In this system, the histopathological grade and the histochemical patterns were estimated on a 0-3 point scale, the total points graded from 0 to 13. RESULTS The incidence of metastasis and prognosis in the cases with total points more than 8 was significantly higher than that with total points less than 7 (P 〈 0.05,χ^2= 22.0658 and P 〈 0.05, χ^2= 10.7047). The system had a significant higher specificity than that of 'DIAGS index' system (Differentiation, Invasion mode, Adhesion molecules, Glycosaminoglycan, and the Sugar chain) in the evaluation of metastasis (P 〈 0.05, u = 2.2339). Moreover, the specificity for evaluation of metastasis in the system was significantly higher than that of E-cadherin (P 〈 0.05, u = 2.4996) or S100A4 (P 〈 0.05, u = 2.4289) only. Furthermore the specificity for evaluation of unfavorable prognosis in the system was also significantly higher than that of E-cadherin (P 〈 0.05, u = 2.1313) or S100A4 only (P 〈 0.05, u = 2.0301). CONCLUSION This is a valuable evaluation system with high specificity to predict metastatic potential and prognosis of oral squamous cell carcinoma. 展开更多
关键词 METASTASIS PROGNOSIS squamous cell carcinoma E-CADHERIN S100A4.
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Human Face Super-Resolution Based on Hybrid Algorithm
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作者 Jinfeng Xia Zhizheng Yang +3 位作者 Fang Li Yuanda Xu nan ma Chunxing Wang 《Advances in Molecular Imaging》 2018年第4期39-47,共9页
Aiming at the problems of image super-resolution algorithm with many convolutional neural networks, such as large parameters, large computational complexity and blurred image texture, we propose a new algorithm model.... Aiming at the problems of image super-resolution algorithm with many convolutional neural networks, such as large parameters, large computational complexity and blurred image texture, we propose a new algorithm model. The classical convolutional neural network is improved, the convolution kernel size is adjusted, and the parameters are reduced;the pooling layer is added to reduce the dimension. Reduced computational complexity, increased learning rate, and reduced training time. The iterative back-projection algorithm is combined with the convolutional neural network to create a new algorithm model. The experimental results show that compared with the traditional facial illusion method, the proposed method can obtain better performance. 展开更多
关键词 FACE HALLUCINATION Super RESOLUTION Convolutional NETWORK HYBRID Algorithm
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Study on Cisplatin Aggravating DNA Damage and Causing a High Apoptosis Rate on Breast Cancer MCF-7 Cells
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作者 Liming YUAN nan ma +10 位作者 Jiaohuan CAO Yi WEN Xiangguang LIU Xianxian ZHOU Shuwen KUANG Mengjie YANG Wanxin OUYANG Shijie JIA Haibin WANG Xiaojun TAO Zhaojun ZENG 《Medicinal Plant》 2017年第4期52-54,61,共4页
[Objectives] To investigate the mechanism of DNA damage of cisplatin( DDP),a broad spectrum anticancer drug on breast cancer MCF-7 cells,and to study the mechanism of apoptosis induced by DDP.[Methods]MCF-7 cells were... [Objectives] To investigate the mechanism of DNA damage of cisplatin( DDP),a broad spectrum anticancer drug on breast cancer MCF-7 cells,and to study the mechanism of apoptosis induced by DDP.[Methods]MCF-7 cells were treated by DDP( 0 mg/L,2 mg/L,4 mg/L,6 mg/L,6 mg/L,and 10 mg/L) for 48 hours. MTT assay was used to detect the inhibitory effect of DDP on MCF-7 cells and IC50 value was calculated. Western blot was adopted to detect the expression of γ-H2 AX,which was the marker of DNA double stranded breaks( DSBs) and ATM( sensory molecules of DSBs),the apoptotic signal transduction molecule cleaved caspase-3,and the proteins associated with apoptosis calpain.[Results]DDP inhibited MCF-7 cell activity in a concentration-dependent manner and IC50 was 7. 57 mg/L. In contrast to the control group( without DDP treatment),MCF-7 cells with DDP treatment expressed more γ-H2 AX,ATM,cleaved caspase-3 and calpain.[Conclusions] DDP could inhibit the activity of breast cancer MCF-7 cells. Its mechanisms may be associated with inhibition of MCF-7 cell apoptosis,induction of DNA double strand breaking and the expression of pro-apoptotic protein up-regulation. 展开更多
关键词 MCF-7 cells Cisplatin(DDP) DNA damage Breast cancer Proliferation Apoptosis IC50
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Aquaporin,beyond a transporter
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作者 Weikun Jing Yonghong Li +3 位作者 Shuai Zhang Xiaofeng Zhou Junping Gao nan ma 《Horticultural Plant Journal》 SCIE CAS CSCD 2023年第1期29-34,共6页
Aquaporins(AQPs)are one of the most ancient superfamily proteins,which are essential for maintaining the fluid homeostasis of most organisms against various environments.Here,the latest findings for function of AQPs i... Aquaporins(AQPs)are one of the most ancient superfamily proteins,which are essential for maintaining the fluid homeostasis of most organisms against various environments.Here,the latest findings for function of AQPs in cell signal transduction in plants are summarized.We also put forward several issues that still need to be addressed in the future. 展开更多
关键词 AQUAPORIN ABA Signal transduction H_(2)O_(2) PHOSPHORYLATION
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Dynamic MmWave Channel Reconstruction of MIMO OTA Testing for Handover Scenarios
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作者 nan ma Jinyu Wang +3 位作者 Jianqiao Chen Xiaoqi Qin Ping Zhang Baoling Liu 《China Communications》 SCIE CSCD 2023年第4期26-40,共15页
The evaluation of handover performance is essential for ensuring seamless user experience under innovative application scenarios in the fifth generation(5G)and beyond era,including autonomous driving,mobile augmented ... The evaluation of handover performance is essential for ensuring seamless user experience under innovative application scenarios in the fifth generation(5G)and beyond era,including autonomous driving,mobile augmented and virtual reality.However,due to the hardware constrains of a sectored multiprobe anechoic chamber(SMPAC),switching among multiple channel models is of low precision with a high cost in traditional over-the-air(OTA)test solutions.In this paper,we present an efficient and repeatable emulation strategy to reconstruct dynamic millimeter-wave(mm Wave)channels in laboratories for multiple-input multiple-output(MIMO)mobile devices.Firstly,we propose a novel evaluation metric,called average power angular spectrum similarity percentage(APSP),which minimizes the unexpected impact induced by the indefinite condition of adaptive antenna arrays in mm Wave terminals during handover process.Moreover,we propose a partitioned probe configuration strategy by designing a beam directivitybased switching circuit,which enables quick changes of probe configurations in SMPAC.Simulation results demonstrate the effectiveness of the proposed algorithms,thus providing a guideline for the reconstruction of the dynamic channel in different scenarios with resource limitation. 展开更多
关键词 OTA test SMPAC dynamic channel reconstruction cell handover
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Sand Production Prediction and Safe Differential Pressure Determination in a Deepwater Gas Field
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作者 Hao Qiu Yi Wu +5 位作者 Min Wen Xuesong Xing Zening Hou nan ma Zizhen Zhang Rui Zhang 《Fluid Dynamics & Materials Processing》 EI 2023年第3期579-592,共14页
Sand production is a critical issue during the development of offshore oil and gas fields.Certain gas fields(e.g.the AB gas field)have high porosity and high permeability,and with water at the bottom of the reservoir,... Sand production is a critical issue during the development of offshore oil and gas fields.Certain gas fields(e.g.the AB gas field)have high porosity and high permeability,and with water at the bottom of the reservoir,the risk of sand production greatly increases at high differential pressures.Based on reservoir properties,geological conditions,production requirements,and well logging data,in this study an ultrasonic time difference method,a B index method,and a S index method are used together with a model of rock mass failure(accounting for water influx and pressure depletion)to qualitatively predict sand production.The results show that considered sample gas field has an overall high risk of sand production.The critical differential pressure(CDP)without water influx is in the range of 1.40 to 2.35 MPa,the CDP after water influx is from 0.60 to 1.41MPa.The CDP under pressure depletion is in the range of 1.20 to 1.92 MPa.The differential pressure charts of sand production are plotted,and the safe differential pressure windows with or without water influx are obtained.The model calculation results and the experimental results are consistent with the field production data,which indicates that the implemented prediction method could be taken as a reference for sand production prediction in similar deep water gas fields. 展开更多
关键词 Sand production differential pressure water influx pressure depletion
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循环视黄醇结合蛋白是急性胰腺炎局部并发症的独立危险因素 被引量:2
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作者 董小武 魏梅 +8 位作者 马楠 陆蓥蓥 谢晓纯 施笑蕾 董杰 马孝杰 李百强 童智慧 李维勤 《世界华人消化杂志》 CAS 2021年第15期873-879,共7页
背景急性胰腺炎(acute pancreatitis,AP)是国内常见急腹症.部分患者存在血清视黄醇结合蛋白(retinol-binding protein,RBP)降低的现象,但其临床意义尚不明确.目的探究RBP与AP严重程度和相关并发症的关系.方法回顾性分析2018年入东部战... 背景急性胰腺炎(acute pancreatitis,AP)是国内常见急腹症.部分患者存在血清视黄醇结合蛋白(retinol-binding protein,RBP)降低的现象,但其临床意义尚不明确.目的探究RBP与AP严重程度和相关并发症的关系.方法回顾性分析2018年入东部战区总医院的AP患者(发病7天内)的临床资料.根据血清RBP水平将患者分为RBP正常组(normal retinol-binding protein,NRBP)和RBP降低组(low retinol-binding protein,LRBP),比较两组基线特征、AP严重程度、临床预后等.通过Logistic回归分析探究局部并发症的独立危险因素.绘制受试者工作曲线,评估RBP对AP相关并发症的预测效能.结果共纳入176例患者,其中NRBP组41人、LRBP组135人.LRBP组AP严重程度显著高于NRBP组(轻症:15.6%比39.0%,中重症:53.3%比29.3%,重症:31.1%比31.7%;P<0.05).LRBP组急性坏死组织积聚比例70.4%,显著高于NRBP组的52.1%(P<0.05).血清RBP水平在有局部并发症的患者中显著低于无局部并发症患者[24.00(15.00,27.50)mg/L比12.00(9.00,22.00)mg/L,P<0.05].RBP预测局部并发症的曲线下面积值为0.708(95%CI:0.615-0.801),最佳截断点为15.5 mg/L,灵敏度为60.4%,特异性为75.7%.RBP降低是局部并发症的独立危险因素(OR=5.306,P=0.003,95%CI:1.771-15.896).结论急性期血清RBP水平能较好的预测AP局部并发症的发生,但与全身炎症反应和远隔脏器衰竭无显著相关性. 展开更多
关键词 急性胰腺炎 视黄醇结合蛋白 局部并发症 系统并发症
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儿童眼肌型重症肌无力发生眼肌麻痹的相关因素研究 被引量:1
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作者 马楠 袁华 +4 位作者 郭峥 王夏冰 尹芙蓉 揭红 李世莲 《国际眼科杂志》 CAS 北大核心 2021年第4期726-729,共4页
目的:探讨儿童眼肌型重症肌无力(OMG)患儿发生眼肌麻痹的相关因素。方法:回顾性分析2011-11/2020-05期间就诊于我院的203例儿童OMG患儿,将其分为眼肌麻痹组97例和非眼肌麻痹组106例,对两组患儿的临床资料进行单因素统计分析,对有统计学... 目的:探讨儿童眼肌型重症肌无力(OMG)患儿发生眼肌麻痹的相关因素。方法:回顾性分析2011-11/2020-05期间就诊于我院的203例儿童OMG患儿,将其分为眼肌麻痹组97例和非眼肌麻痹组106例,对两组患儿的临床资料进行单因素统计分析,对有统计学差异的指标进一步行多因素回归分析。结果:纳入的203例儿童OMG患儿发生眼肌麻痹者97例(47.8%),69例(71.1%)表现为斜视,其次为歪头视物(18例,18.6%)。97例患儿中单眼79例(81.4%),单条眼外肌受累53例(54.6%),其中内直肌19例(35.8%)。眼肌麻痹组和非眼肌麻痹组患儿年龄,血清免疫球蛋白M(IgM),血清游离三碘甲状腺原氨酸(FT3),血清甲状腺球蛋白(TG),采用激素联合治疗(72.2%vs 38.7%)均有统计学意义(P<0.05)。血清FT3水平(OR=2.006,95%CI:1.233~3.263)和采用激素联合治疗(OR=4.328,95%CI:1.936~9.677)是影响儿童OMG患儿发生眼肌麻痹的相关因素。结论:儿童OMG患儿发生眼肌麻痹较常见,单眼多发,内直肌最易受累,较少出现复视。血清FT3可作为评估儿童OMG患儿发生眼肌麻痹的重要免疫指标。 展开更多
关键词 儿童 眼肌型重症肌无力 眼肌麻痹
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An Ethylene-inhibited NF-YC Transcription Factor RhNF-YC9 Regulates Petal Expansion in Rose 被引量:11
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作者 Changxi Chen Nisar Hussain +6 位作者 Yaru Wang Mingtong Li Lin Liu Meizhu Qin nan ma Junping Gao Xiaoming Sun 《Horticultural Plant Journal》 SCIE 2020年第6期419-427,共9页
The speed of flower opening is closely related to their ornamental period.Ethylene functions as a negative regulator involved in the regulation of the petal expansion process.In this study,we isolated a NF-YC transcri... The speed of flower opening is closely related to their ornamental period.Ethylene functions as a negative regulator involved in the regulation of the petal expansion process.In this study,we isolated a NF-YC transcription factor gene,RhNF-YC9,fromrose petals.RhNF-YC9 expression was induced at the early stages of flower opening but was inhibited by ethylene treatment.Silencing RhNF-YC9 decreased the speed of petal expansion from stage 2 to stage 5.The expressions of 11 cell expansion-related genes involved in cell wall loosening,cell turgor modulation,and cytoskeleton remodeling were significantly down-regulated in RhNF-YC9-silenced petals.We also found that silencing RhNF-YC9 decreased the expression of gibberellin acid(GA)biosynthetic gene RhGA20ox while significantly increasing the transcripts of GA catabolic gene RhGA2ox,reducing the accumulation of GA4 and GA7.The influence of ethylene treatment on the expression of RhGA20ox and RhGA2ox showed the same trend.These results together suggested that RhNF-YC9 positively regulated the speed of petal expansion and mediated the crosstalk between ethylene and GA.Our findings revealed a new insight into the function of NF-YC transcription factors involved in ethylene-regulated petal expansion. 展开更多
关键词 Rosa hybrida Petal expansion ETHYLENE RhNF-YC9 Transcriptional regulation GAs
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RhMYB108,an R2R3-MYB transcription factor,is involved in ethylene-and JA-induced petal senescence in rose plants 被引量:13
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作者 Shuai Zhang Qingcui Zhao +5 位作者 Daxing Zeng Jiehua Xu Hougao Zhou Fenglan Wang nan ma Yonghong Li 《Horticulture Research》 SCIE 2019年第1期70-81,共12页
Rose(Rosa hybrida)plants are major ornamental species worldwide,and their commercial value greatly depends on their open flowers,as both the quality of fully open petals and long vase life are important.Petal senescen... Rose(Rosa hybrida)plants are major ornamental species worldwide,and their commercial value greatly depends on their open flowers,as both the quality of fully open petals and long vase life are important.Petal senescence can be started and accelerated by various hormone signals,and ethylene is considered an accelerator of petal senescence in rose.To date,however,the underlying mechanism of signaling crosstalk between ethylene and other hormones such as JA in petal senescence remains largely unknown.Here,we isolated RhMYB108,an R2R3-MYB transcription factor,which is highly expressed in senescing petals as well as in petals treated with exogenous ethylene and JA.Applications of exogenous ethylene and JA markedly accelerated petal senescence,while the process was delayed in response to applications of 1-MCP,an ethylene action inhibitor.In addition,silencing of RhMYB108 alter the expression of SAGs such as RhNAC029,RhNAC053,RhNAC092,RhSAG12,and RhSAG113,and finally block ethylene-and JA-induced petal senescence.Furthermore,RhMYB108 was identified to target the promoters of RhNAC053,RhNAC092,and RhSAG113.Our results reveal a model in which RhMYB108 functions as a receptor of ethylene and JA signals to modulate the onset of petal senescence by targeting and enhancing senescence-associated gene expression. 展开更多
关键词 expression FLOWERS SENESCENCE
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Evolution Toward Artificial Intelligence of Things Under 6G Ubiquitous⁃X 被引量:4
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作者 Ping Zhang Xiaodong Xu +3 位作者 Xiaoqi Qin Yiming Liu nan ma Shujun Han 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2020年第3期116-135,共20页
With the evolution of cellular networks,6G is a promising technology to provide ubiquity of communications,computing,control,and consciousness(UC4)for“human⁃machine⁃thing⁃genie”and build a ubiquitous intelligent mob... With the evolution of cellular networks,6G is a promising technology to provide ubiquity of communications,computing,control,and consciousness(UC4)for“human⁃machine⁃thing⁃genie”and build a ubiquitous intelligent mobile society.Genie,which can act as the artificial intelligence assistance for 6G users,is the key enabler to realize the unprecedented transformation from mobile Internet to network of intelligence.While Internet of Things(IoT)is the digital nervous system,genie acts like the brain of the overall system.Supported by 6G,IoT will step into the Artificial Intelligence of Things(AIoT)era and the AIoT networks have the abilities of intelligent perception,intelligent analysis,and intelligent control.In this paper,the concept of Ubiquitous⁃X is introduced,which is considered as the fundamental architecture of 6G network,and the definition and architecture of AIoT under Ubiquitous⁃X is also presented.Several major technical challenges posed by the service requirements of novel AIoT applications are pinpointed,including massive and intelligent connectivity,efficient computing,security,privacy,authentication,high scalability and efficiency.Potential enabling technologies to support seamless service experiences across terminals to realize AIoT are introduced as well. 展开更多
关键词 AIoT 6G Ubiquitous⁃X AI MEC blockchain physical layer security
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H_(2)O_(2)mediates transcriptome reprogramming during Soybean mosaic virus-induced callose deposition in soybean 被引量:3
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作者 Tianjie Sun Xizhe Sun +9 位作者 Fukuan Li nan ma Mengxuan Wang Yan Chen Na Liu Yuan Jin Jie Zhang Chunyan Hou Chunyan Yang Dongmei Wang 《The Crop Journal》 SCIE CSCD 2022年第1期262-272,共11页
The main defense response to Soybean mosaic virus(SMV)infection in soybean[Glycine max(L.)Merr.]is thought to be blockage of intercellular virus transport by callose deposition on plasmodesmata.But the specific regula... The main defense response to Soybean mosaic virus(SMV)infection in soybean[Glycine max(L.)Merr.]is thought to be blockage of intercellular virus transport by callose deposition on plasmodesmata.But the specific regulatory mechanism remains largely unknown.In this study,we found that hydrogen peroxide(H_(2)O_(2))signal downstream of NO was associated with the regulation of callose accumulation.Abundant H_(2)O_(2)was produced on the cell membrane and cell wall in the incompatible combination of soybean cultivar Jidou 7 and SMV strain N3,whereas no obvious H_(2)O_(2)was observed in the compatible combination of Jidou 7 and strain SC-8.When H_(2)O_(2)production was inhibited,callose accumulation induced by SMV infection decreased to a level insufficient to restrict virus transport in the incompatible combination.The H_(2)O_(2)-associated transcriptome dynamics of soybean during SMV infection was investigated.Transcriptome and functional analysis using virus-induced gene silencing showed that Gm SEOB and Gm PAP27,two genes regulated by H_(2)O_(2),functioned in resistance by positively regulating the accumulation of callose in response to SMV infection.These results lay a foundation for further research on the signal transduction and molecular regulation of callose deposition during soybean resistance to SMV infection. 展开更多
关键词 CALLOSE Soybean mosaic virus H_(2)O_(2) TRANSCRIPTOME SOYBEAN
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Effects of river damming on biogenic silica turnover:implications for biogeochemical carbon and nutrient cycles 被引量:3
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作者 nan ma Zhaoliang Song +5 位作者 Baoli Wang Fushun Wang Xiaomin Yang Xiaodong Zhang Qian Hao Yuntao Wu 《Acta Geochimica》 EI CAS CSCD 2017年第4期626-637,共12页
Rivers link terrestrial ecosystems and marine ecosystems, and they transport large amounts of substances into oceans each year, including several forms of silicon(Si), carbon(C), and other nutrients. However, river da... Rivers link terrestrial ecosystems and marine ecosystems, and they transport large amounts of substances into oceans each year, including several forms of silicon(Si), carbon(C), and other nutrients. However, river damming affects the water flow and biogeochemical cycles of Si, C, and other nutrients through biogeochemical interacting processes. In this review, we first summarize the current understanding of the effects of river damming on the processes of biogeochemical Si cycle, especially the source, composition, and recycling process of biogenic silica(BSi). Then, we introduce dam impacts on the cycles of C and some other nutrients. Dissolved silicon in rivers is mainly released from phytolith dissolution and silicate weathering. BSi in suspended matter or sediments in most rivers mainly consists of phytoliths and mainly originates from soil erosion. However, diatom growth and deposition in many reservoirs formed by river interception may significantly increase the contribution of diatom Si to total BSi, and thus significantly influence the biogeochemical Si,C, and nutrient cycles. Yet the turnover of phytoliths and diatoms in different rivers formed by river damming is still poorly quantified. Thus, they should be further investigated to enhance our understanding about the effects of river damming on global biogeochemical Si, C and nutrient cycles. 展开更多
关键词 River damming Biogenic silica Biogeochemical cycles River ecosystem
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Influence of sintering temperature on the structure and piezoelectric properties of ZnO-modified (Li, Na, K)NbO_(3) lead-free ceramics 被引量:1
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作者 Hai-tao Li Bo-ping Zhang +1 位作者 Wei-gang Yang nan ma 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2012年第9期843-848,共6页
ZnO-modified (Li, Na, K)NbO3 lead-free ceramics with a nominal composition of Li0.06(Na0.535K0.48)0.94NbO3+0.7mol% ZnO (LNKN-ZT) was synthesized normally at 930-1000℃. The Zn ions incorporated into the A-site at a hi... ZnO-modified (Li, Na, K)NbO3 lead-free ceramics with a nominal composition of Li0.06(Na0.535K0.48)0.94NbO3+0.7mol% ZnO (LNKN-ZT) was synthesized normally at 930-1000℃. The Zn ions incorporated into the A-site at a higher sintering temperaVare, which changed LNKN-Z7 to soft piezoelectric ceramics with the mechanical quality factor decreasing from 228 to 192. A phase transition from tetragonal to orthorhombic symmetry was identified by XRD analysis, and the corresponding calculation of lattice parameters was conducted at 970-980℃. Because of such transitional behavior and fine microstructure, the optimized values of piezoelectric coefficient, planar electromechanical coupling coefficient, and relative dielectric constant were obtained. 展开更多
关键词 piezocemmics NIOBATES zinc oxide modification phase transitions PIEZOELECTRICITY SINTERING
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Author Correction: RhMYB108, an R2R3-MYB transcription factor, is involved in ethylene- and JA-induced petal senescence in rose plants 被引量:1
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作者 Shuai Zhang Qingcui Zhao +5 位作者 Daxing Zeng Jiehua Xu Hougao Zhou Fenglan Wang nan ma Yonghong Li 《Horticulture Research》 SCIE 2019年第1期1-2,共2页
After publication of our article[1],we became aware that there were errors in Fig.7b,namely the negative control of pLacZi+pJG4-5-RhMYB108(2nd row,panel 1).The error does not affect the result,discussion or conclusion... After publication of our article[1],we became aware that there were errors in Fig.7b,namely the negative control of pLacZi+pJG4-5-RhMYB108(2nd row,panel 1).The error does not affect the result,discussion or conclusion in the article.The correct version of Figure is shown below.We apologise to the journal and to readers for this error. 展开更多
关键词 journal FIGURE CONCLUSION
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