Physiological responses of Melica transsilvanica to endophytic fungi infection under conditions of water stress
This study explored the impact of water stress on the physiological responses of Melica transsilvanica to endophytic fungal infection.Using both endophyte-infected(E+)and non-infected(E-)plants,a controlled water experiment with soil moisture levels of 60%-65%field water capacity(FWC)was set up for the control(CK),85%-90%FWC for the high humidity treatment(W),and 15%-20%FWC for the drought treatment(D).The significant differences were found in proline content and superoxide dismutase(SOD)activity between E+and E-plants following 7 days of both high humidity and drought stress(P<0.05).After 14 days of stress,the significant differences were observed in chlorophyll,proline,malondialdehyde(MDA)content,SOD,peroxidase(POD),ascorbate peroxidase(APX),and catalase(CAT)activities in E+and E-plants under the same conditions(P<0.05).After 21 days of stress,E+plants had significantly increased MDA content and relative cell membrane permeability compared to E-plants under both conditions(P<0.05).The results suggested that endophytic fungal infection enhanced the tolerance of Melica transsilvanica to water stress.
water stressendophytic fungiMelica transsilvanicaphysiological parametersprotective enzymes
万方数据
维普
