A putative plastidial adenine nucleotide transporter, BRITTLE1-3, plays an essential role in regulating chloroplast development in rice (Oryza sativa L.)
文献类型: 外文期刊
第一作者: Lyu, Jia
作者: Lyu, Jia;Wang, Yihua;Liu, Linglong;Wang, Chunming;Ren, Yulong;Peng, Cheng;Liu, Feng;Wang, Yunlong;Niu, Mei;Wang, Di;Zheng, Ming;Zhou, Kunneng;Zhao, Shaolu;Wan, Jianmin;Wu, Fuqing;Wan, Jianmin;Wang, Haiyang
作者机构:
关键词: Chloroplast biogenesis;OsBT1-3;Reactive oxygen species (ROS);Rice (Oryza sativa);White Stripe Leaf 2 (WSL2)
期刊名称:JOURNAL OF PLANT BIOLOGY ( 影响因子:2.434; 五年影响因子:2.455 )
ISSN: 1226-9239
年卷期: 2017 年 60 卷 5 期
页码:
收录情况: SCI
摘要: Differentiation from proplastids into chloroplasts is a light- and energy-dependent process. How this process is regulated is still poorly understood at the molecular level. We herein report a new putative plastidial adenine nucleotide transporter, BRITTLE1-3 (referred to as OsBT1-3), encoded by the rice (Oryza sativa) White Stripe Leaf 2 (WSL2) gene. Loss of OsBT1-3 function results in defective chloroplast biogenesis, severely reduced photosynthetic efficiency, and finally a white stripe leaf phenotype in the first four leaves. The expression levels of genes related to chlorophyll biosynthesis and photosynthesis are drastically reduced, accompanied with over accumulation of reactive oxygen species (ROS) in the wsl2 mutant. OsBT1-3 is targeted to the chloroplasts and it expresses in almost all tissues in plants, especially in young leaves. OsBT1-3 consists of 419 amino acids and exhibits features of all mitochondrial carrier proteins, including a typical transmembrane-spanning domain and a highly conserved sequence motif designated as the 'mitochondrial energy transfer signatures'. Phylogenetic analysis shows that OsBT1-3 is a putative plastidial adenine nucleotide transporter and is most closely related to ZmBT1-2. Together, these observations suggest that the new putative adenine nucleotide transporter, OsBT1-3, plays an essential role in regulating chloroplast biogenesis and maintenance of ROS homeostasis during rice seedling de-etiolation.
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