TY  - EJOU
AU  - Yang, Shiqin 
AU  - Jiang, Tao 
AU  - Shen, Peilin 
AU  - Ren, Shengjie 
AU  - Gu, Zhun 
AU  - Feng, Fangjun 
AU  - Peng, Yunpeng 
AU  - Wang, Wei 
AU  - Xu, Kai 

TI  - Constitutive Activation <i>OsbZIP62</i> Improves Plant Height and Yield through Regulating the Expression of Agronomic Traits Related Genes in Rice
T2  - Phyton-International Journal of Experimental Botany

PY  - 2022
VL  - 91
IS  - 8
SN  - 1851-5657

AB  - Plant height is an important morphological trait that affects crop yield. Several genes related to plant height and yield have been reported in rice (<i>Oryza sativa</i> L.), however, the molecular mechanism underlying the regulation of these traits is still not completely understood. VP64 is widely used as a transcriptional activator to investigate the biological function of genes encoding transcription factors. Here, we identified a novel bZIP transcription factor <i>OsbZIP62</i> that is involved in modulating agronomic traits in rice. Overexpression of <i>OsbZIP62-VP64</i> (<i>OsbZIP62V</i>) significantly increases the plant height and yield per plant in rice. RNA-seq analysis showed that some plant height and panicle development related genes (i.e., <i>OsEATB</i>, <i>OsDSS1</i> and <i>OsGA3ox2</i>) were up-regulated in <i>OsbZIP62V</i> overexpressing rice plants. Besides, <i>OsbZIP62</i> could also bind to the promoters of several putative target genes. These results suggested that <i>OsbZIP62</i> plays a role as transcriptional regulator in regulating the expression of genes associated with agronomic traits, and <i>OsbZIP62</i> fused with VP64 would be useful in crop genetic modification with improved plant architecture and yield.
KW  - Rice; <i>OsbZIP62</i>; panicle length; plant height; transcription factor; yield

DO  - 10.32604/phyton.2022.018996