期刊
PLANT PHYSIOLOGY
卷 146, 期 3, 页码 1109-1116出版社
AMER SOC PLANT BIOLOGISTS
DOI: 10.1104/pp.107.113654
关键词
-
资金
- NCRR NIH HHS [1 S10 RR 107903-01] Funding Source: Medline
- NIGMS NIH HHS [GM 053190] Funding Source: Medline
Multigene families encoding class XI myosins are conserved in higher plants, however, little information is available on specific functions of these ubiquitous molecular motors. We isolated gene knockout mutants for all 13 class XI myosins present in Arabidopsis ( Arabidopsis thaliana) genome. Inactivation of 11 myosin genes resulted in no discernible phenotypes under the normal growth conditions. In contrast, the knockouts of the remaining two myosin genes, XI-2 ( formerly MYA2) and XI-K, exhibited similar defects in root hair elongation suggesting that the myosin- driven motility plays a significant role in a polar tip growth. Strikingly, inactivation of each of these myosins also reduced trafficking of Golgi stacks, peroxisomes, and mitochondria in root hairs and in leaf epidermal cells. These results indicate that myosins XI-K and XI-2 play major and overlapping roles in the cell dynamics in Arabidopsis and highlight the redundant nature of myosin function in plants.
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