Exogenous calcium alleviates low night temperature stress on the photosynthetic apparatus of tomato leaves.
Exogenous calcium alleviates low night temperature stress on the photosynthetic apparatus of tomato leaves.
复制标题
外源钙缓解夜间低温对番茄叶片光合机构的胁迫
DOI:
10.1371/journal.pone.0097322
复制
发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Li T
中科院分区:
文献类型:
--
作者:
Zhang G;Liu Y;Ni Y;Meng Z;Lu T;Li T
The effect of exogenous CaCl2 on photosystem I and II (PSI and PSII) activities, cyclic electron flow (CEF), and proton motive force of tomato leaves under low night temperature (LNT) was investigated. LNT stress decreased the net photosynthetic rate (Pn), effective quantum yield of PSII [Y(II)], and photochemical quenching (qP), whereas CaCl2 pretreatment improved Pn, Y(II), and qP under LNT stress. LNT stress significantly increased the non-regulatory quantum yield of energy dissipation [Y(NO)], whereas CaCl2 alleviated this increase. Exogenous Ca2+ enhanced stimulation of CEF by LNT stress. Inhibition of oxidized PQ pools caused by LNT stress was alleviated by CaCl2 pretreatment. LNT stress reduced zeaxanthin formation and ATPase activity, but CaCl2 pretreatment reversed both of these effects. LNT stress caused excess formation of a proton gradient across the thylakoid membrane, whereas CaCl2 pretreatment decreased the said factor under LNT. Thus, our results showed that photoinhibition of LNT-stressed plants could be alleviated by CaCl2 pretreatment. Our findings further revealed that this alleviation was mediated in part by improvements in carbon fixation capacity, PQ pools, linear and cyclic electron transports, xanthophyll cycles, and ATPase activity.
登录
查看更多内容
DOI:
10.1073/pnas.0503952102
发表时间:
2005-07-05
影响因子:
11.1
作者:
Avenson, TJ;Cruz, JA;Kramer, DM
通讯作者:
Kramer, DM
影响因子:
4.3
作者:
Ivanov, A. G.;Allakhverdiev, S. I.;Murata, N.
通讯作者:
Murata, N.
影响因子:
3.7
作者:
Joliot, Pierre;Alric, Jean
通讯作者:
Alric, Jean
影响因子:
4.9
作者:
Huang, Wei;Zhang, Shi-Bao;Cao, Kun-Fang
通讯作者:
Cao, Kun-Fang
DOI:
10.1073/pnas.182427499
发表时间:
2002-10-01
影响因子:
11.1
作者:
Kanazawa, A;Kramer, DM
通讯作者:
Kramer, DM