Cadmium(Cd)toxicity in rice is a major concern for human health and the environment,as it can accumulate in rice grains when grown in Cd-contaminated soils.To mitigate the risk of Cd toxicity,it is crucial to cultivat...Cadmium(Cd)toxicity in rice is a major concern for human health and the environment,as it can accumulate in rice grains when grown in Cd-contaminated soils.To mitigate the risk of Cd toxicity,it is crucial to cultivate rice varieties with low grain Cd accumulation.In the summers of 2021 and 2022,we conducted Cd analysis on two rice cultivars,Tianyouhuazhan(TYHZ)and Xiushui 14,grown in fields with varying Cd pollution levels.These cultivars were also subjected to hydroponic treatment with or without 1μmol/L Cd for 7 d to assess Cd accumulation,nitric oxide(NO)production。展开更多
Although putrescine(PUT)has been linked to plants'responses to cadmium(Cd)stress,the exact mechanism is still elusive.In the current investigation,the endogenous PUT concentration in rice roots was enhanced by Cd ...Although putrescine(PUT)has been linked to plants'responses to cadmium(Cd)stress,the exact mechanism is still elusive.In the current investigation,the endogenous PUT concentration in rice roots was enhanced by Cd stress.Exogenous PUT increased root cell wall hemicellulose levels,which in turn increased its Cd binding capacity,concurrently decreasing the transcription level of genes such as OsNRAMP1 and OsCd1 that are responsible for root Cd absorption.As a result。展开更多
目的通过对南平市某二甲医院歧义病案产生的原因分析,提高疾病诊断相关分组(diagnosis related groups,DRGs)的正确入组率。方法回顾性调查2023年1—4月南平市某二甲医院7675份病案,依据国际疾病分类(international classification of d...目的通过对南平市某二甲医院歧义病案产生的原因分析,提高疾病诊断相关分组(diagnosis related groups,DRGs)的正确入组率。方法回顾性调查2023年1—4月南平市某二甲医院7675份病案,依据国际疾病分类(international classification of diseases,ICD-10)和手术操作分类(international classification of diseases clinical modificationof9threvisionoperationsandprocedures,ICD-9-CM-3)的编码规则以及国家医疗保障疾病诊断相关分组(China healthcare security diagnosis related groups,CHS-DRG)细分组方案(1.1版),分析歧义病案产生的影响因素。结果7675份住院病案首页参与分组病案6923份,共有异常分组病案205份,其中空白病组病案3份;歧义病案202份,占分组病案的2.92%。产生歧义病案的主要因素有:主要诊断选择错误、主要手术选择有误、主要手术与主要诊断不在同一主要诊断大类(major diagnostic category,MDC)、同次住院多疾病共治等。结论针对歧义病案产生的主要原因应加强临床医师和编码员住院病案首页填报和DRG相关知识的培训,做好病案首页质量事前控制工作,提高病案正确入组率。展开更多
Phosphorus(P) starvation in rice facilitates the reutilization of root cell wall P by enhancing the pectin content. NaCl modulates pectin content, however, it is still unknown whether NaCl is also involved in the proc...Phosphorus(P) starvation in rice facilitates the reutilization of root cell wall P by enhancing the pectin content. NaCl modulates pectin content, however, it is still unknown whether NaCl is also involved in the process of pectin regulated cell wall P remobilization in rice under P starved conditions. In this study, we found that 10 mmol/L NaCl increased the shoot and root biomasses under P deficiency to a remarkable extent, in company with the elevated shoot and root soluble P contents in rice. Further analysis indicated that exogenous NaCl enhanced the root cell wall P mobilization by increasing the pectin methylesterase activity and uronic acid content in pectin suggesting the involvement of NaCl in the process of cell wall P reutilization in P starved rice roots. Additionally, exogenous NaCl up-regulated the expression of P transporter OsPT6, which was induced by P deficiency, suggesting that NaCl also facilitated the P translocation prominently from root to shoot in P starved rice. Moreover, exogenous abscisic acid(ABA) can reverse the NaCl-mediated mitigation under P deficiency, indicating the involvement of ABA in the NaCl regulated root cell wall P reutilization. Taken together, our results demonstrated that NaCl can activate the reutilization of root cell wall P in P starved rice, which is dependent on the ABA accumulation pathway.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.42020104004)the National Key Research and Development Program of China(Grant No.2019YFC1803705)+3 种基金the Field Frontier Program of the Institute of Soil Science,China(Grant No.ISSASIP2215)the Agricultural Science and Technology Independent Innovation Fund Project of Jiangsu Province,China(Grant No.CX(21)2034)the Key Research and Development Project of Jiangsu Province,China(Grant No.BE2021717)the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Grant No.2015250)。
文摘Cadmium(Cd)toxicity in rice is a major concern for human health and the environment,as it can accumulate in rice grains when grown in Cd-contaminated soils.To mitigate the risk of Cd toxicity,it is crucial to cultivate rice varieties with low grain Cd accumulation.In the summers of 2021 and 2022,we conducted Cd analysis on two rice cultivars,Tianyouhuazhan(TYHZ)and Xiushui 14,grown in fields with varying Cd pollution levels.These cultivars were also subjected to hydroponic treatment with or without 1μmol/L Cd for 7 d to assess Cd accumulation,nitric oxide(NO)production。
基金supported by the Hainan Yazhou Bay Seed Laboratory Project,China(Grant No.B21HJ0220)the National Natural Science Foundation of China(Grant No.42020104004)+3 种基金the Field Frontier Program of the Institute of Soil Science,China(Grant No.ISSASIP2215)the Agricultural Science and Technology Independent Innovation Fund Project of Jiangsu Province,China(Grant No.CX(21)2034)the Key Research and Development Project of Jiangsu Province,China(Grant No.BE2021717)the Special Fund Project of Soil Pollution Prevention and Control(Xinyi Agriculture and Rural Bureau,New Collection List(2021)1468)。
文摘Although putrescine(PUT)has been linked to plants'responses to cadmium(Cd)stress,the exact mechanism is still elusive.In the current investigation,the endogenous PUT concentration in rice roots was enhanced by Cd stress.Exogenous PUT increased root cell wall hemicellulose levels,which in turn increased its Cd binding capacity,concurrently decreasing the transcription level of genes such as OsNRAMP1 and OsCd1 that are responsible for root Cd absorption.As a result。
文摘目的通过对南平市某二甲医院歧义病案产生的原因分析,提高疾病诊断相关分组(diagnosis related groups,DRGs)的正确入组率。方法回顾性调查2023年1—4月南平市某二甲医院7675份病案,依据国际疾病分类(international classification of diseases,ICD-10)和手术操作分类(international classification of diseases clinical modificationof9threvisionoperationsandprocedures,ICD-9-CM-3)的编码规则以及国家医疗保障疾病诊断相关分组(China healthcare security diagnosis related groups,CHS-DRG)细分组方案(1.1版),分析歧义病案产生的影响因素。结果7675份住院病案首页参与分组病案6923份,共有异常分组病案205份,其中空白病组病案3份;歧义病案202份,占分组病案的2.92%。产生歧义病案的主要因素有:主要诊断选择错误、主要手术选择有误、主要手术与主要诊断不在同一主要诊断大类(major diagnostic category,MDC)、同次住院多疾病共治等。结论针对歧义病案产生的主要原因应加强临床医师和编码员住院病案首页填报和DRG相关知识的培训,做好病案首页质量事前控制工作,提高病案正确入组率。
基金supported by the Foundation for Distinguished Young Scholars of Jiangsu Province,China(Grant No.BK20190050)Zhejiang Provincial Natural Science Foundation of China(Grant No.LY22C130004)the Youth Innovation Promotion Association of Chinese Academy of Sciences(Grant No.2015250)。
文摘Phosphorus(P) starvation in rice facilitates the reutilization of root cell wall P by enhancing the pectin content. NaCl modulates pectin content, however, it is still unknown whether NaCl is also involved in the process of pectin regulated cell wall P remobilization in rice under P starved conditions. In this study, we found that 10 mmol/L NaCl increased the shoot and root biomasses under P deficiency to a remarkable extent, in company with the elevated shoot and root soluble P contents in rice. Further analysis indicated that exogenous NaCl enhanced the root cell wall P mobilization by increasing the pectin methylesterase activity and uronic acid content in pectin suggesting the involvement of NaCl in the process of cell wall P reutilization in P starved rice roots. Additionally, exogenous NaCl up-regulated the expression of P transporter OsPT6, which was induced by P deficiency, suggesting that NaCl also facilitated the P translocation prominently from root to shoot in P starved rice. Moreover, exogenous abscisic acid(ABA) can reverse the NaCl-mediated mitigation under P deficiency, indicating the involvement of ABA in the NaCl regulated root cell wall P reutilization. Taken together, our results demonstrated that NaCl can activate the reutilization of root cell wall P in P starved rice, which is dependent on the ABA accumulation pathway.
