作者
Wenxin Tang, Lili Tu, Xiyan Yang, Jiafu Tan, Fenglin Deng, Juan Hao, Kai Guo, Keith Lindsey, Xianlong Zhang
发表日期
2014/4/1
期刊
New Phytologist
卷号
202
期号
2
页码范围
509-520
简介
- Fiber elongation is the key determinant of fiber quality and output in cotton (Gossypium hirsutum). Although expression profiling and functional genomics provide some data, the mechanism of fiber development is still not well understood.
- Here, a gene encoding a calcium sensor, GhCaM7, was isolated based on its high expression level relative to other GhCaMs in fiber cells at the fast elongation stage. The level of expression of GhCaM7 in the wild‐type and the fuzzless/lintless mutant correspond to the presence and absence, respectively, of fiber initials.
- Overexpressing GhCaM7 promotes early fiber elongation, whereas GhCaM7 suppression by RNAi delays fiber initiation and inhibits fiber elongation. Reactive oxygen species (ROS) play important roles in early fiber development. ROS induced by exogenous hydrogen peroxide (H2O2) and Ca2+ starvation promotes early fiber elongation. GhCaM7 …
学术搜索中的文章
W Tang, L Tu, X Yang, J Tan, F Deng, J Hao, K Guo… - New phytologist, 2014
