| Autor: |
Ye, Jing, Yang, Yao-long, Wei, Xing-hua, Niu, Xiao-jun, Wang, Shan, Xu, Qun, Yuan, Xiao-ping, Yu, Han-yong, Wang, Yi-ping, Feng, Yue, Wang, Shu |
| Zdroj: |
Journal of Zhejiang University - Science B; April 2018, Vol. 19 Issue: 4 p263-273, 11p |
| Abstrakt: |
Rice leaf color mutants play a great role in research about the formation and development of chloroplasts and the genetic mechanism of the chlorophyll (Chl) metabolism pathway. pgl3is a rice leaf color mutant derived from Xiushui11 (Oryza sativaL. spp. japonica), treated with ethyl methane sulfonate (EMS). The mutant exhibited a pale-green leaf (pgl) phenotype throughout the whole development as well as reduced grain quality. Map-based cloning of PGL3revealed that it encodes the chloroplast signal recognition particle 43 kDa protein (cpSRP43). PGL3affected the Chl synthesis by regulating the expression levels of the Chl synthesis-associated genes. Considerable reactive oxygen species were accumulated in the leaves of pgl3, and the transcription levels of its scavenging genes were down-regulated, indicating that pgl3can accelerate senescence. In addition, high temperatures could inhibit the plant’s growth and facilitate the process of senescence in pgl3. |
| Databáze: |
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