期刊
ISCIENCE
卷 17, 期 -, 页码 144-+出版社
CELL PRESS
DOI: 10.1016/j.isci.2019.06.024
关键词
-
资金
- Swiss National Science Foundation [31003A-152831, 31003A-169546]
- Swiss Secretariat for Education and Research and Innovation (SERI) of the COST action STREAM [FA1206]
- Swiss National Science Foundation (SNF) [31003A_169546, 31003A_152831] Funding Source: Swiss National Science Foundation (SNF)
The majority of land plants have two suberized root barriers: the endodermis and the hypodermis (exodermis). Both barriers bear non-suberized passage cells that are thought to regulate water and nutrient exchange between the root and the soil. We learned a lot about endodermal passage cells, whereas our knowledge on hypodermal passage cells (HPCs) is still very scarce. Here we report on factors regulating theHPC number in Petunia roots. Strigolactones exhibit a positive effect, whereas supply of abscisic acid (ABA), ethylene, and auxin result in a strong reduction of the HPC number. Unexpectedly the strigolactone signaling mutant d14/dad2 showed significantly higher HPC numbers than the wild-type. In contrast, its mutant counterpart max2 of the heterodimeric receptor DAD2/MAX2 displayed a significant decrease in HPC number. A mutation in the Petunia karrikin sensor KAI2 exhibits drastically decreased HPC amounts, supporting the hypothesis that the dimeric KAI2/MAX2 receptor is central in determining the HPC number.
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