期刊
PLANT SIGNALING & BEHAVIOR
卷 7, 期 8, 页码 922-926出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/psb.20760
关键词
chlorophyll biosynthesis; photosynthesis; transcriptional regulation; cis-element; co-expression network
资金
- Ministry of Education, Culture, Sports and Technology (MEXT), Japan [K03]
- Research Fellowship for Young Scientists from the Japanese Society for the Promotion of Science (JSPS)
- RIKEN
- [21570035]
- Grants-in-Aid for Scientific Research [24114005] Funding Source: KAKEN
Regulation of chlorophyll metabolism comprises strong transcriptional control together with a range of post-translational mechanisms during chloroplast biogenesis. Recently we reported that chlorophyll biosynthesis in Arabidopsis thaliana roots is regulated by auxin/cytokinin signaling via the combination of two transcription factors, LONG-HYPOCOTYL5 (HY5) and GOLDEN2-LIKE2 (GLK2). In this study, we examined the involvement of cis-elements in the expression of chlorophyll biosynthesis genes. Searches for predicted cis-elements in key chlorophyll biosynthesis genes and their co-expressed genes revealed coexistence of the G-box motif and the CCAATC motif, which may be targeted by HY5 and GLK factors, respectively, in their promoter regions. Deletion of the G-box from the promoter of the CHLH gene encoding the H subunit of Mg-chelatase resulted in the absence of its expression in roots but not in shoots, showing a differing involvement of the G-box in CHLH expression between shoots and roots. Our data suggest that transcription factors and cis-elements participating chlorophyll biosynthesis are substantially changed during organ differentiation, which may be linked to the differentiation of plastids.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据