التفاصيل البيبلوغرافية
| العنوان: |
ZmCYP90D1 regulates maize internode development by modulating brassinosteroid-mediated cell division and growth. |
| المؤلفون: |
Canran Sun1, Yang Liu1, Guofang Li1, Yanle Chen1, Mengyuan Li1, Ruihua Yang1, Yongtian Qin2, Yongqiang Chen3, Jinpeng Cheng4, Jihua Tang1,3 tangjihua1@163.com, Zhiyuan Fu1 fuzhiyuan@henau.edu.cn |
| المصدر: |
Crop Journal (2095-5421). Feb2024, Vol. 12 Issue 1, p58-67. 10p. |
| مصطلحات موضوعية: |
*CELL division, *BRASSINOSTEROIDS, *CORN yields, *HAPLOTYPES, *BIOSYNTHESIS, *DWARF plants |
| مستخلص: |
Plant height (PH) is associated with lodging resistance and planting density, which is regulated by a complicated gene network. In this study, we identified a spontaneous dwarfing mutation in maize, m30, with decreased internode number and length but increased internode diameter. A candidate gene, ZmCYP90D1, which encodes a member of the cytochrome P450 family, was isolated by map-based cloning. ZmCYP90D1 was constitutively expressed and showed highest expression in basal internodes, and its protein was targeted to the nucleus. A G-to-A substitution was identified to be the causal mutation, which resulted in a truncated protein in m30. Loss of function of ZmCYP90D1 changed expression of hormoneresponsive genes, in particular brassinosteroid (BR)-responsive genes which is mainly involved in cell cycle regulation and cell wall extension and modification in plants. The concentration of typhasterol (TY), a downstream intermediate of ZmCYP90D1 in the BR pathway, was reduced. A haplotype conferring dwarfing without reducing yield was identified. ZmCYP90D1 was inferred to influence plant height and stalk diameter via hormone-mediated cell division and cell growth via the BR pathway. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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