The effects of arbuscular mycorrhizal fungi(AMF) Glomus mosseae on the responses to elevated O3 in growth and nutrition of snap bean(Phaseolus vulgaris L.cv Guangzhouyuan) were investigated.Exposure was conducted ...The effects of arbuscular mycorrhizal fungi(AMF) Glomus mosseae on the responses to elevated O3 in growth and nutrition of snap bean(Phaseolus vulgaris L.cv Guangzhouyuan) were investigated.Exposure was conducted in growth chambers by using three O3 concentrations(20(CF),80(CFO1) and 120 nL/L(CFO2);8 hr/day for 75 days).Results showed that elevated O3 slightly impacted overall mycorrhizal colonization,but significantly decreased the proportional frequency of hypha and increased the proportional frequency of spores and vesicles,suggesting that O3 had significant effects on mycorrhizal structure.Elevated O3 significantly decreased yield,dry mass and nutrient contents(N,P,K,Ca and Mg) in both non-mycorrhizal and mycorrhizal plants.However,significant interactive effects were found in most variables due to that the reduction by O3 in the mycorrhizal plants was less than that in the non-mycorrhizal plants.Additionally,AMF increased the concentrations of N,P,Ca,and Mg in shoot and root.It can be concluded that AMF alleviated detrimental effects of increasing O3 on host plant through improving plant nutrition and growth.展开更多
Dear Editor,The pathophysiologic al mechanisms underlying mood disorders including major depressive disorder(MDD)remain to be fully characterized.Iron is a key component in the development of the central nervous syste...Dear Editor,The pathophysiologic al mechanisms underlying mood disorders including major depressive disorder(MDD)remain to be fully characterized.Iron is a key component in the development of the central nervous system and iron deficiency has been linked to impairments of mood and cognition[1].展开更多
基金supported by the National Natural Science Foundation of China(No.40701180,30670387)the Chinese Universities Scientific Fund(No.ZZ1106, ZD0904)the Project of Beijing Key Discipline and State Key Laboratory of Urban and Regional Ecology
文摘The effects of arbuscular mycorrhizal fungi(AMF) Glomus mosseae on the responses to elevated O3 in growth and nutrition of snap bean(Phaseolus vulgaris L.cv Guangzhouyuan) were investigated.Exposure was conducted in growth chambers by using three O3 concentrations(20(CF),80(CFO1) and 120 nL/L(CFO2);8 hr/day for 75 days).Results showed that elevated O3 slightly impacted overall mycorrhizal colonization,but significantly decreased the proportional frequency of hypha and increased the proportional frequency of spores and vesicles,suggesting that O3 had significant effects on mycorrhizal structure.Elevated O3 significantly decreased yield,dry mass and nutrient contents(N,P,K,Ca and Mg) in both non-mycorrhizal and mycorrhizal plants.However,significant interactive effects were found in most variables due to that the reduction by O3 in the mycorrhizal plants was less than that in the non-mycorrhizal plants.Additionally,AMF increased the concentrations of N,P,Ca,and Mg in shoot and root.It can be concluded that AMF alleviated detrimental effects of increasing O3 on host plant through improving plant nutrition and growth.
基金the National Natural Science Foundation of China(81871852,81200935,81671867 and 81971794)the Liaoning Revitalization Talents Program(XLYC1807137)+1 种基金the Scientific Research Foundation for Returned Scholars of the Ministry of Education of China(20151098)the Natural Science Foundation of Liaoning Province,China(20170541030)。
文摘Dear Editor,The pathophysiologic al mechanisms underlying mood disorders including major depressive disorder(MDD)remain to be fully characterized.Iron is a key component in the development of the central nervous system and iron deficiency has been linked to impairments of mood and cognition[1].