Four new fungal polyketides named koninginins N-Q(1–4),together with four known analogues(5–8),were isolated from the endophytic fungus Trichoderma koningiopsis YIM PH30002 harbored in Panax notoginseng.Their struct...Four new fungal polyketides named koninginins N-Q(1–4),together with four known analogues(5–8),were isolated from the endophytic fungus Trichoderma koningiopsis YIM PH30002 harbored in Panax notoginseng.Their structures were determined on the basis of spectral data interpretation.These compounds were evaluated for their antifungal activity,nitric oxide inhibition,and anticoagulant activity.展开更多
通过施加外源Me JA,SA及2种内生菌处理,研究白及组培苗生理及总酚含量的影响。采用组培的方法将种子培养为无菌苗,再对其施加不同处理,观察及测定生理和总酚含量的变化。结果发现:SA各浓度处理下幼苗生长情况均较差,40μmol·L^(-1)...通过施加外源Me JA,SA及2种内生菌处理,研究白及组培苗生理及总酚含量的影响。采用组培的方法将种子培养为无菌苗,再对其施加不同处理,观察及测定生理和总酚含量的变化。结果发现:SA各浓度处理下幼苗生长情况均较差,40μmol·L^(-1)Me JA,50 m L·L^(-1)Hypocrea koningii及10 m L·L^(-1)Trichoderma koningiopsis处理下幼苗生长状况较好;各浓度SA处理下,SOD,POD及CAT活性均较高,Me JA处理下SOD,POD在较高浓度时活性较高,CAT活性则在80μmol·L^(-1)时较高,H.koningii处理下SOD,POD活性均随处理浓度的升高而升高,CAT活性则在1 m L·L^(-1)时较高,T.koningiopsis处理下SOD,POD,CAT活性均随浓度升高先升高后降低,均在10 m L·L^(-1)时较高。4种处理下MDA、可溶性蛋白及脯氨酸含量均有不同程度的升高;60μmol·L^(-1)Me JA处理下幼苗多糖含量较高;40μmol·L^(-1)Me JA,60μmol·L^(-1)SA,1 m L·L^(-1)H.koningii及10 m L·L^(-1),T.koningiopsis处理下总酚含量较高。说明添加一定浓度的外源Me JA,SA及内生菌处理均能在一定程度上提高白及幼苗的抗逆性、提高总酚含量,一定浓度下Me JA及2种内生菌处理还具有促进幼苗生长的作用。展开更多
基金This work was supported partly by grants from the National Natural Science Foundation of China(Nos.81360480,21262041 and 81460536).
文摘Four new fungal polyketides named koninginins N-Q(1–4),together with four known analogues(5–8),were isolated from the endophytic fungus Trichoderma koningiopsis YIM PH30002 harbored in Panax notoginseng.Their structures were determined on the basis of spectral data interpretation.These compounds were evaluated for their antifungal activity,nitric oxide inhibition,and anticoagulant activity.
文摘通过施加外源Me JA,SA及2种内生菌处理,研究白及组培苗生理及总酚含量的影响。采用组培的方法将种子培养为无菌苗,再对其施加不同处理,观察及测定生理和总酚含量的变化。结果发现:SA各浓度处理下幼苗生长情况均较差,40μmol·L^(-1)Me JA,50 m L·L^(-1)Hypocrea koningii及10 m L·L^(-1)Trichoderma koningiopsis处理下幼苗生长状况较好;各浓度SA处理下,SOD,POD及CAT活性均较高,Me JA处理下SOD,POD在较高浓度时活性较高,CAT活性则在80μmol·L^(-1)时较高,H.koningii处理下SOD,POD活性均随处理浓度的升高而升高,CAT活性则在1 m L·L^(-1)时较高,T.koningiopsis处理下SOD,POD,CAT活性均随浓度升高先升高后降低,均在10 m L·L^(-1)时较高。4种处理下MDA、可溶性蛋白及脯氨酸含量均有不同程度的升高;60μmol·L^(-1)Me JA处理下幼苗多糖含量较高;40μmol·L^(-1)Me JA,60μmol·L^(-1)SA,1 m L·L^(-1)H.koningii及10 m L·L^(-1),T.koningiopsis处理下总酚含量较高。说明添加一定浓度的外源Me JA,SA及内生菌处理均能在一定程度上提高白及幼苗的抗逆性、提高总酚含量,一定浓度下Me JA及2种内生菌处理还具有促进幼苗生长的作用。
