Effects of salicylic acid on the photosystem 2 of barley seedlings under osmotic stress
Effects of salicylic acid on the photosystem 2 of barley seedlings under osmotic stress
复制标题
渗透胁迫下水杨酸对大麦幼苗光系统2的影响
DOI:
10.1007/s10535-009-0120-1
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发表时间:
2009-11
影响因子:
1.5
通讯作者:
Luo, M. -H.
中科院分区:
文献类型:
--
作者:
Lin, H. -H.;Du, J. -B.;Liu, W. -J.;Wang, M. -B.;Lei, T.;Yuan, S.;Chen, Y. -E.;Luo, M. -H.
The effects of exogenous salicylic acid (SA) on photosystem 2 (PS 2) in barley (Hordeum vulgareL.) seedlings were investigated. SA pretreatment provided protection against subsequent osmotic stress. The highest protective effect of 0.25 mM SA was confirmed by determination of chlorophyll fluorescence, electrolyte leakage, malonyldialdehyde contents, PS 2 mRNAs and proteins. SA pretreatment increased reactive oxygen species (ROS), decreased net photosynthetic rate and stomatal conductance immediately, but prevented ROS accumulation during subsequent osmotic stress by activating antioxidant enzymes. Elimination of H2O2during SA pretreatment inhibited almost all above mentioned SA effects. Therefore, SA pretreatment enhanced osmotic stress tolerance in barley seedlings mainly through ROS signals, rather than SA itself. The only SA-dependent and ROS-independent effect of exogenous SA on PS 2 was reduction of non-photochemical quenching.
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影响因子:
4.9
作者:
T. Kuwabara;N. Murata
通讯作者:
T. Kuwabara;N. Murata
影响因子:
7.4
作者:
Van Breusegem, Frank;Dat, James F.
通讯作者:
Dat, James F.
影响因子:
4.3
作者:
A. Wahid;M. Perveen;Sadia Gelani;S. Basra
通讯作者:
A. Wahid;M. Perveen;Sadia Gelani;S. Basra
影响因子:
1.5
作者:
Mahdavian, K.;Kalantari, K. M.;Torkzade, M.
通讯作者:
Torkzade, M.
影响因子:
6.4
作者:
Yuan, S;Liu, WJ;Lin, HH
通讯作者:
Lin, HH