PE-1, Encoding Heme Oxygenase 1, Impacts Heading Date and Chloroplast Development in Rice (Oryza sativa L.)

• DOI: 10.1021/acs.jafc.9b01676
• Publication Date: 2019-06-07T07:32:01Z
• Authors: Yuchun Rao; Na Xu; Sanfeng Li; Juan Hu; Ran Jiao; Ping Hu; Han Lin; Caolin Lu; Xue Lin; Zhijun Dai; Yilan Zhang; Xudong Zhu; Yuexing Wang
• Keywords: Panicle; Oryza; Amyloplast

The duration of the rice growth phase has always been an important target trait. identification mutations in that alter these processes and result a shorter could have potential benefits for crop production. In this study, we isolated early aging mutant, pe-1, with light green leaves, using γ-mutated indica cultivar subsequent screening methods, which is known as phytochrome synthesis factor Se5 controls flowering. pe-1 plant accompanied by decreased chlorophyll content, enhanced photosynthesis, pollen fertility. PE-1, close homologue HY1, localized chloroplast. Expression pattern analysis indicated PE-1 was mainly expressed roots, stems, leaf sheaths, young panicles. knockout CRISPR/Cas9 system content downregulated expression PE-1-related genes. Furthermore, chloroplasts were filled many large-sized starch grains, number osmiophilic granules (a chloroplast lipid reservoir) significantly decreased. Altogether, our findings suggest functions master regulator to mediate biosynthesis photosynthetic pathways.