The five-year-old “Longanyou” trees were used as the experimental material to study the effects of different fertilization treatments. The nutrient contents in soil and leaves, fruit yield and quality were determine...The five-year-old “Longanyou” trees were used as the experimental material to study the effects of different fertilization treatments. The nutrient contents in soil and leaves, fruit yield and quality were determined, and then the correlations were analyzed. The results showed that: 1) The soil nutrient contents of 0 - 20 cm depth were more than the 20 - 40 cm, and the trends of nutrient contents of the 0 - 20 cm soil layers were as follows: treatment 2 (T2) > treatment 3 (T3) > treatment 4 (T4) > treatment 1(T1) > control (CK). However, the 20 - 40 cm depth had not significant difference between different treatments, but T2, T4 and T3 were higher than T1 and CK. It indicated that the soil effective nutrient content increased in T2 and T3. 2) Compared with the control, the content of K and B elements was improved obviously in leaves with the increase of organic manure application. The contents of P (1.60 g·kg-1), B (26.00 mg·kg-1) and Mg (1.18 g·kg-1) were the highest, and other nutrients contents were also higher, indicating that T2 could effectively improve the leaves’ nutrient contents. 3) The fruit yield per plant was the highest in T2 (95.40 kg plant-1), and the single fruit weight, total sugar, sugar and acid ratio, vitamin C were also the highest, but titratable acid was lower. It indicated that T2 effectively improved fruit yield and quality. 4) There were positive correlations between multiple factors of soil nutrients and the quality index, such as fruit peel thickness, total sugar, solid acid ratio, sugar and acid ratio, Vc content and single yield etc. There was significant correlation between K, B, Zn, Fe contents and fruit yield and quality index, and the contents of B, Zn and Fe in leaves were significantly correlated with soil nutrient, indicating that the contents of K, B, Zn, Fe in soil and leaf were closely related to fruit yield and quality. In sum, the T2 was the best fertilization scheme for orchard management practice of “Longanyou”.展开更多
Genetic transformation experiments of the different explants from Citrus grandis cv. Changshou Shatian You infected with Agrobacterium rhizogenes were carried out in darkness or in light. The optimizing culture system...Genetic transformation experiments of the different explants from Citrus grandis cv. Changshou Shatian You infected with Agrobacterium rhizogenes were carried out in darkness or in light. The optimizing culture system of Ri T-DNA transformed roots for C. grandis cv. Changshou Shatian You was constructed as follows： After the ventral wounded striations on the single activation cotyledon were inoculated by A. rhizogenes A4 （logarithmic period）, they were cocultured at （25 ±2）℃ in darkness for 25-30 days; some transformed roots were generated from wounded striations of most cotyledons. The genetically transformed ratio is （83 ± 11）%. Axenic Ri T-DNA transformed roots （hairy roots） were harvested after five subcultures. Explants were activated on MT medium. The MS medium was used for subculture of transformed roots. Mass Ri T-DNA transformed roots in which the hormone was produced independently were harvested from this optimizing culture system. White, fresh Ri T-DNA transformed roots were （1.14 ±0.07） cm long, （0.73 ±0.04） mm wide, and the growth direction of transformed roots was negative geotropism.展开更多
HLB disease has been endangering citrus production,and it is an important task in Citrus grandis production to identify and control HLB disease. Diaphorina citri and Trioza erytreae are the main vectors for the spread...HLB disease has been endangering citrus production,and it is an important task in Citrus grandis production to identify and control HLB disease. Diaphorina citri and Trioza erytreae are the main vectors for the spreading of HLB disease. Scientific and proper release of predatory natural enemies such as ladybugs,combined with chemical control can effectively control psyllid. For suspected HLB disease strains,a simple " HLB disease detection reagent" can be used for detection. This method is simple,cheap and accurate,and it is an economical and feasible identification method for ordinary growers.展开更多
As of April 2017,the planting area of Citrus grandis in Ruili City was 594. 3 ha. Among it,the area of fruiting trees was 267. 2 ha,and they were mainly owned by small growers. In view of the serious fragmentation of ...As of April 2017,the planting area of Citrus grandis in Ruili City was 594. 3 ha. Among it,the area of fruiting trees was 267. 2 ha,and they were mainly owned by small growers. In view of the serious fragmentation of pomelos,the large investment in fertilizers,and the unsatisfactory production efficiency of C. grandis in Ruili,the fertilization technology for C. grandis was discussed. The problems in the fertilization process,as well as the principles and modes of fertilization were analyzed briefly. The fertilization methods for saplings and fruiting trees were introduced,in order to promote the improvement of the fertilization and management level of local pomelo growers.展开更多
[ Objective ] This study aimed to establish the infrared （IR） spectra fingerprints for peels of Citrus grandis from Guangxi Zhuang Autonomous Region. [ Method ] The fingerprint was established by fourier transform i...[ Objective ] This study aimed to establish the infrared （IR） spectra fingerprints for peels of Citrus grandis from Guangxi Zhuang Autonomous Region. [ Method ] The fingerprint was established by fourier transform infrared spectroscopy （ FT-IR）, and then were analyzed by Omic software. [ Result ] IR spectra fin- gerprint of C. grand/s were successfully established. There were six common peaks in the characteristic spectra of 12 samples. [ Conclusion] The specific, rapid and stable method can be applied to quality control of C. grandis.展开更多
Objective:"Same treatment for different diseases"is a unique treatment strategy in traditional Chinese medicine.Two kinds of malignant respiratory diseases endanger human health-chronic obstructive pulmonary...Objective:"Same treatment for different diseases"is a unique treatment strategy in traditional Chinese medicine.Two kinds of malignant respiratory diseases endanger human health-chronic obstructive pulmonary disease(COPD)and lung cancer.Citrus Grandis Exocarpium(Huajuhong in Chinese,HJH),a famous herbal,is always applied by Chinese medicine practitioners to dispersion the lung to resolve phlegm based on"syndrome differentiation and treatment"theory.However,the common mechanism for HJH’s treatment of COPD and lung cancer is not clear.Methods:In this study,based on network pharmacology and molecular docking technology,the common mechanism of HJH in the treatment of COPD and lung cancer was studied.The active ingredients and related targets of HJH were integrated from TCMSP,BATMAN-TAM,STP,and Pubchem databases.The standard names of these targets were united by Uni Prot database.Targets of COPD and lung cancer were enriched through Gene Cards,NCBI(Gene),Therapeutic Target Database,and Dis Ge NET(v7.0)databases.Then the intersection targets of HJH and diseases were obtained.The STRING network and the Cytoscape 3.7.2 were used to construct PPI network,the DAVID database was used to perform GO and KEGG analysis.Then Cytoscape 3.6.1 was used to build"ingredient-target-signal pathway"network.Finally,Auto Dock 1.5.6 software was used to perform molecular docking of key proteins and molecules.Results:Eleven active ingredients in HJH were obtained by searching the database,corresponding to 184 HJH-COPD-lung cancer targets intersection.The results of biological network analysis showed that naringenin,the active component in HJH,could mainly act on target proteins such as AKT1,EGFR.Then through positive regulation of vasoconstriction and other biological processes,naringenin could regulate estrogen signaling pathway,VEGF signaling pathway,HIF-1 signaling pathway,Erb B signaling pathway,PI3K-Akt signaling pathway to play an important role in the treatment of both COPD and lung cancer.Conclusion:Network pharmacology was employed to systematically investigate the active ingredients and targets of HJH in treatment of COPD and lung cancer.And then,the common pharmacodynamic network of HJH for the two malignant respiratory diseases was firstly described.Furthermore,naringenin was proved to strongly bind with AKT1 and EGFR.It may provide the scientific basis for understanding the"Same treatment for different diseases"strategy in traditional Chinese medicine and inspirit subsequent drug discovery for COPD,lung cancer and other malignant lung diseases.展开更多
文摘The five-year-old “Longanyou” trees were used as the experimental material to study the effects of different fertilization treatments. The nutrient contents in soil and leaves, fruit yield and quality were determined, and then the correlations were analyzed. The results showed that: 1) The soil nutrient contents of 0 - 20 cm depth were more than the 20 - 40 cm, and the trends of nutrient contents of the 0 - 20 cm soil layers were as follows: treatment 2 (T2) > treatment 3 (T3) > treatment 4 (T4) > treatment 1(T1) > control (CK). However, the 20 - 40 cm depth had not significant difference between different treatments, but T2, T4 and T3 were higher than T1 and CK. It indicated that the soil effective nutrient content increased in T2 and T3. 2) Compared with the control, the content of K and B elements was improved obviously in leaves with the increase of organic manure application. The contents of P (1.60 g·kg-1), B (26.00 mg·kg-1) and Mg (1.18 g·kg-1) were the highest, and other nutrients contents were also higher, indicating that T2 could effectively improve the leaves’ nutrient contents. 3) The fruit yield per plant was the highest in T2 (95.40 kg plant-1), and the single fruit weight, total sugar, sugar and acid ratio, vitamin C were also the highest, but titratable acid was lower. It indicated that T2 effectively improved fruit yield and quality. 4) There were positive correlations between multiple factors of soil nutrients and the quality index, such as fruit peel thickness, total sugar, solid acid ratio, sugar and acid ratio, Vc content and single yield etc. There was significant correlation between K, B, Zn, Fe contents and fruit yield and quality index, and the contents of B, Zn and Fe in leaves were significantly correlated with soil nutrient, indicating that the contents of K, B, Zn, Fe in soil and leaf were closely related to fruit yield and quality. In sum, the T2 was the best fertilization scheme for orchard management practice of “Longanyou”.
基金The research was supported by the Science Fund of China Post Ph.D （2003034492）Science Foundation of Chongqing Educational Committee （040216）, China.
文摘Genetic transformation experiments of the different explants from Citrus grandis cv. Changshou Shatian You infected with Agrobacterium rhizogenes were carried out in darkness or in light. The optimizing culture system of Ri T-DNA transformed roots for C. grandis cv. Changshou Shatian You was constructed as follows： After the ventral wounded striations on the single activation cotyledon were inoculated by A. rhizogenes A4 （logarithmic period）, they were cocultured at （25 ±2）℃ in darkness for 25-30 days; some transformed roots were generated from wounded striations of most cotyledons. The genetically transformed ratio is （83 ± 11）%. Axenic Ri T-DNA transformed roots （hairy roots） were harvested after five subcultures. Explants were activated on MT medium. The MS medium was used for subculture of transformed roots. Mass Ri T-DNA transformed roots in which the hormone was produced independently were harvested from this optimizing culture system. White, fresh Ri T-DNA transformed roots were （1.14 ±0.07） cm long, （0.73 ±0.04） mm wide, and the growth direction of transformed roots was negative geotropism.
文摘HLB disease has been endangering citrus production,and it is an important task in Citrus grandis production to identify and control HLB disease. Diaphorina citri and Trioza erytreae are the main vectors for the spreading of HLB disease. Scientific and proper release of predatory natural enemies such as ladybugs,combined with chemical control can effectively control psyllid. For suspected HLB disease strains,a simple " HLB disease detection reagent" can be used for detection. This method is simple,cheap and accurate,and it is an economical and feasible identification method for ordinary growers.
文摘As of April 2017,the planting area of Citrus grandis in Ruili City was 594. 3 ha. Among it,the area of fruiting trees was 267. 2 ha,and they were mainly owned by small growers. In view of the serious fragmentation of pomelos,the large investment in fertilizers,and the unsatisfactory production efficiency of C. grandis in Ruili,the fertilization technology for C. grandis was discussed. The problems in the fertilization process,as well as the principles and modes of fertilization were analyzed briefly. The fertilization methods for saplings and fruiting trees were introduced,in order to promote the improvement of the fertilization and management level of local pomelo growers.
基金Supported by the Natural Science Foundation of Guangxi Zhuang Autonomous Region (2011GXNSFF018006)
文摘[ Objective ] This study aimed to establish the infrared （IR） spectra fingerprints for peels of Citrus grandis from Guangxi Zhuang Autonomous Region. [ Method ] The fingerprint was established by fourier transform infrared spectroscopy （ FT-IR）, and then were analyzed by Omic software. [ Result ] IR spectra fin- gerprint of C. grand/s were successfully established. There were six common peaks in the characteristic spectra of 12 samples. [ Conclusion] The specific, rapid and stable method can be applied to quality control of C. grandis.
基金financially supported by the National Key Research and Development Program of China (2018YFC1706300 and 2018YFC17063005)the Science and Technology Planning Project of Gansu Province (20JR10RA586)+2 种基金the Fundamental Research Funds for the Central Universities (lzujbky-2021-kb40)the Project for Longyuan Youth Innovation and Entrepreneurship Talentthe Science and Technology Planning Project of Guangdong Province of China (2019B090905002)
文摘Objective:"Same treatment for different diseases"is a unique treatment strategy in traditional Chinese medicine.Two kinds of malignant respiratory diseases endanger human health-chronic obstructive pulmonary disease(COPD)and lung cancer.Citrus Grandis Exocarpium(Huajuhong in Chinese,HJH),a famous herbal,is always applied by Chinese medicine practitioners to dispersion the lung to resolve phlegm based on"syndrome differentiation and treatment"theory.However,the common mechanism for HJH’s treatment of COPD and lung cancer is not clear.Methods:In this study,based on network pharmacology and molecular docking technology,the common mechanism of HJH in the treatment of COPD and lung cancer was studied.The active ingredients and related targets of HJH were integrated from TCMSP,BATMAN-TAM,STP,and Pubchem databases.The standard names of these targets were united by Uni Prot database.Targets of COPD and lung cancer were enriched through Gene Cards,NCBI(Gene),Therapeutic Target Database,and Dis Ge NET(v7.0)databases.Then the intersection targets of HJH and diseases were obtained.The STRING network and the Cytoscape 3.7.2 were used to construct PPI network,the DAVID database was used to perform GO and KEGG analysis.Then Cytoscape 3.6.1 was used to build"ingredient-target-signal pathway"network.Finally,Auto Dock 1.5.6 software was used to perform molecular docking of key proteins and molecules.Results:Eleven active ingredients in HJH were obtained by searching the database,corresponding to 184 HJH-COPD-lung cancer targets intersection.The results of biological network analysis showed that naringenin,the active component in HJH,could mainly act on target proteins such as AKT1,EGFR.Then through positive regulation of vasoconstriction and other biological processes,naringenin could regulate estrogen signaling pathway,VEGF signaling pathway,HIF-1 signaling pathway,Erb B signaling pathway,PI3K-Akt signaling pathway to play an important role in the treatment of both COPD and lung cancer.Conclusion:Network pharmacology was employed to systematically investigate the active ingredients and targets of HJH in treatment of COPD and lung cancer.And then,the common pharmacodynamic network of HJH for the two malignant respiratory diseases was firstly described.Furthermore,naringenin was proved to strongly bind with AKT1 and EGFR.It may provide the scientific basis for understanding the"Same treatment for different diseases"strategy in traditional Chinese medicine and inspirit subsequent drug discovery for COPD,lung cancer and other malignant lung diseases.
