Loss-of-function mutation of rice SLAC7 decreases chloroplast stability and induces a photoprotection mechanism in rice.
Loss-of-function mutation of rice SLAC7 decreases chloroplast stability and induces a photoprotection mechanism in rice.
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DOI:
10.1111/jipb.12350
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发表时间:
2015-12
影响因子:
11.4
通讯作者:
Lin Y
中科院分区:
文献类型:
--
作者:
Fan X;Wu J;Chen T;Tie W;Chen H;Zhou F;Lin Y
Plants absorb sunlight to power the photochemical reactions of photosynthesis, which can potentially damage the photosynthetic machinery. However, the mechanism that protects chloroplasts from the damage remains unclear. In this work, we demonstrated that rice (Oryza sativa L.) SLAC7 is a generally expressed membrane protein. Loss‐of‐function of SLAC7 caused continuous damage to the chloroplasts of mutant leaves under normal light conditions. Ion leakage indicators related to leaf damage such as H2O2 and abscisic acid levels were significantly higher in slac7‐1 than in the wild type. Consistently, the photosynthesis efficiency and Fv/Fm ratio of slac7‐1 were significantly decreased (similar to photoinhibition). In response to chloroplast damage, slac7‐1 altered its leaf morphology (curled or fused leaf) by the synergy between plant hormones and transcriptional factors to decrease the absorption of light, suggesting that a photoprotection mechanism for chloroplast damage was activated in slac7‐1. When grown in dark conditions, slac7‐1 displayed a normal phenotype. SLAC7 under the control of the AtSLAC1 promoter could partially complement the phenotypes of Arabidopsis slac1 mutants, indicating a partial conservation of SLAC protein functions. These results suggest that SLAC7 is essential for maintaining the chloroplast stability in rice.
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DOI:
10.1111/nph.12008
发表时间:
2013-01
期刊:
The New phytologist
影响因子:
--
作者:
Laanemets K;Wang YF;Lindgren O;Wu J;Nishimura N;Lee S;Caddell D;Merilo E;Brosche M;Kilk K;Soomets U;Kangasjärvi J;Schroeder JI;Kollist H
通讯作者:
Kollist H
影响因子:
11.6
作者:
Lu, H;Rate, DN;Greenberg, JT
通讯作者:
Greenberg, JT
影响因子:
5.1
作者:
Chen, Taiyu;Zhu, Xin-Guang;Lin, Yongjun
通讯作者:
Lin, Yongjun
影响因子:
4.3
作者:
LUDLOW, MM;BJORKMAN, O
通讯作者:
BJORKMAN, O
影响因子:
11.6
作者:
Lam, Sheung Kwan;Siu, Ching Lung;Jiang, Liwen
通讯作者:
Jiang, Liwen