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- Title
外源 ATP 对NaCl胁迫下菜豆叶片叶绿素荧光特性的调节.
- Authors
石岱龙; 田武英; 焦青松; 王庆文; 冯汉青; 贾凌云
- Abstract
NaCl stress is an important adverse environmental factor, exogenous ATP(eATP)was found a signal molecule involved in plant responses to stresses. We studied the effects of exogenous ATP(eATP)on chlorophyll fluorescence characteristics of bean(Phaseolus vulgaris )leaves under NaCl stress. The results showed that treatment with NaCl caused a significant decrease in the ratio of Fv/Fm (the potential maximal photochemical efficiency of PS II), Fv'/Fm'(the maximum quantum efficiency of PS II photochemistry at illumination ), Y(II)(effective photochemical quantum yield of PS II photosynthetic), qP(photochemical quenching coefficient), and ETR(the rate of non-cyclic electron transport through PS II), but the levels of qN(non-photochemical quenching)and NPQ(non-photochemical quenching)were significantly increased. These results suggested that NaCl stress caused the decrease of the photochemical efficiency of bean leaves and dissipation of light energy. However, the application of exogenous ATP effectively mitigated the decreases of Fv/Fm, Fv'/Fm', Y(II), qP and ETR and mitigated the increases of qN and NPQ under NaCl stress. These results suggest that exogenous ATP can improve the photochemical efficiency of photo-system II when plants were subjected to NaCl stress.
- Publication
Guihaia, 2016, Vol 36, Issue 9, p1087
- ISSN
1000-3142
- Publication type
Article
- DOI
10.11931/guihaia.gxzw201510025