By using red soil and late rice Wufengyou T025 as the tested materials,the influences of straw returning with a microbial agent on the quantity of microorganisms and enzyme activity in rhizosphere soil in fields were ...By using red soil and late rice Wufengyou T025 as the tested materials,the influences of straw returning with a microbial agent on the quantity of microorganisms and enzyme activity in rhizosphere soil in fields were studied,and soil productivity was tested with yield and agricultural traits of late rice. The results showed that straw returning with the microbial agent could significantly improve the quantity of bacteria,fungi and actinomyces in soil,enhance the activity of sucrase,urease,catalase and cellulase,and improve the number of grains per spike,setting percentage,thousand seed weight and yield of late rice. The combination of rice straw returning and the microbial agent has a good prospect of application.展开更多
[Objective] The paper was to explore the effect of agro-antibiotic 211, the active substance produced by streptomyces JD211, on rice resistance to sheath blight. [Method] Through pot experiment, the induction effect o...[Objective] The paper was to explore the effect of agro-antibiotic 211, the active substance produced by streptomyces JD211, on rice resistance to sheath blight. [Method] Through pot experiment, the induction effect of agro-antibiotic 211 on rice resistance against sheath blight was analyzed, and the effect on phenolic metabolites and pathogenesis-related proteins were studied.[Result] The total phenol, phenylalanine ammonialyase, lignin, chitinase and β-1, 3-glucanase of rice leaves treated by agro-antibiotic 211 were slightly higher than that in control. At 96 h post treatment, the activity of β-1, 3-glucanase was 36.84% and 10.48% higher than that of blank control and CK+ Rhizoctonia solani, respectively; at120 h post treatment, the activity of phenylalanine ammonia-lyase were 42.13% and 62.28% higher than that of blank control and CK+ R. solani,respectively. The effect of agro-antibiotic 211 + R. solani was equal or slightly higher than that of Jinggangmycin + R. solani. [Conclusion] Agroantibiotic 211 induced rice resistance against sheath blight, and was closely related to the accumulation of phenolic substances and the increase of pathogenesis-related proteins.展开更多
Abstractsolution （AS） against Rhizocto- nia solani, Magnaporthe grisea and Ustilaginoidea virens. [ Method] The toxicity effect of 0.3% agricultural antibiotic 702 AS against R., solani, M. grisea and U. virens were...Abstractsolution （AS） against Rhizocto- nia solani, Magnaporthe grisea and Ustilaginoidea virens. [ Method] The toxicity effect of 0.3% agricultural antibiotic 702 AS against R., solani, M. grisea and U. virens were studied by mycelial growth rate method and mycelial wet weight method. [ Result ] The EC50 and EC50 values of agricultural antibiotics 702 AS to R. solani, M. grisea and U. virens in vitro condition were 4.16 and 16.17 mg/L, 16.05 and 41.85 mg/L, 111.2 and 389.0 mg/L, respectively. Agricultural antibi- otics 702 AS had good inhibition effect against R. solani and M. grisea and could basically achieve the effects of commercially available Jinggangmycin and kaanga- mycin, but the inhibition effect against U. v/rens was relatively weak. The preventive activity of aqueous solution was obviously higher than treatment activity. [Conclusion] 0.3% Agricultural antibiotic 702 AS is considered to be a potential biological control agent against R. solani, M. grisea and U. virens, and can be used as the potential alternative pesticide of Jinggangmycin.展开更多
基金Supported by National Key Research and Development Program of China(2017YFD0200808)National Key Technology R&D Program in the 11th Five-Year Plan of China(2006BAD02A04)+1 种基金Innovation Foundation for Postgraduates in Jiangxi Province(YC10A056)Free Declaration Project of Jiangxi Agricultural University
文摘By using red soil and late rice Wufengyou T025 as the tested materials,the influences of straw returning with a microbial agent on the quantity of microorganisms and enzyme activity in rhizosphere soil in fields were studied,and soil productivity was tested with yield and agricultural traits of late rice. The results showed that straw returning with the microbial agent could significantly improve the quantity of bacteria,fungi and actinomyces in soil,enhance the activity of sucrase,urease,catalase and cellulase,and improve the number of grains per spike,setting percentage,thousand seed weight and yield of late rice. The combination of rice straw returning and the microbial agent has a good prospect of application.
基金Supported by National Natural Science Foundation of China(31460469)
文摘[Objective] The paper was to explore the effect of agro-antibiotic 211, the active substance produced by streptomyces JD211, on rice resistance to sheath blight. [Method] Through pot experiment, the induction effect of agro-antibiotic 211 on rice resistance against sheath blight was analyzed, and the effect on phenolic metabolites and pathogenesis-related proteins were studied.[Result] The total phenol, phenylalanine ammonialyase, lignin, chitinase and β-1, 3-glucanase of rice leaves treated by agro-antibiotic 211 were slightly higher than that in control. At 96 h post treatment, the activity of β-1, 3-glucanase was 36.84% and 10.48% higher than that of blank control and CK+ Rhizoctonia solani, respectively; at120 h post treatment, the activity of phenylalanine ammonia-lyase were 42.13% and 62.28% higher than that of blank control and CK+ R. solani,respectively. The effect of agro-antibiotic 211 + R. solani was equal or slightly higher than that of Jinggangmycin + R. solani. [Conclusion] Agroantibiotic 211 induced rice resistance against sheath blight, and was closely related to the accumulation of phenolic substances and the increase of pathogenesis-related proteins.
基金Supported by National Natural Science Foundation of China(30960011,31071724)Natural Science Foundation of Jiangxi Province(2009GZN0030,2010GZN0037)+1 种基金Jiangxi Science and Technology Support Program(2009BNA07200)Fund for Key Laboratory of the Ministry of Agriculture of Agricultural Environment and Agricultural Products Safety
文摘Abstractsolution （AS） against Rhizocto- nia solani, Magnaporthe grisea and Ustilaginoidea virens. [ Method] The toxicity effect of 0.3% agricultural antibiotic 702 AS against R., solani, M. grisea and U. virens were studied by mycelial growth rate method and mycelial wet weight method. [ Result ] The EC50 and EC50 values of agricultural antibiotics 702 AS to R. solani, M. grisea and U. virens in vitro condition were 4.16 and 16.17 mg/L, 16.05 and 41.85 mg/L, 111.2 and 389.0 mg/L, respectively. Agricultural antibi- otics 702 AS had good inhibition effect against R. solani and M. grisea and could basically achieve the effects of commercially available Jinggangmycin and kaanga- mycin, but the inhibition effect against U. v/rens was relatively weak. The preventive activity of aqueous solution was obviously higher than treatment activity. [Conclusion] 0.3% Agricultural antibiotic 702 AS is considered to be a potential biological control agent against R. solani, M. grisea and U. virens, and can be used as the potential alternative pesticide of Jinggangmycin.
