期刊
MOLECULAR PLANT-MICROBE INTERACTIONS
卷 33, 期 7, 页码 911-920出版社
AMER PHYTOPATHOLOGICAL SOC
DOI: 10.1094/MPMI-03-20-0064-R
关键词
actin cytoskeleton; bryophytes immune response; calcium; chitin oligosaccharides; defense signaling pathways; Physcomitrella patens; plant responses to pathogens
资金
- European Research Council [ERC-2013-StG-335284]
- Ministerio de Ciencia, Innovacion y Universidades [FJCI-2017-33222]
- National Science Foundation [NSF-MCB 1253444]
- Fulbright Scholar Program
A characteristic feature of a plant immune response is the increase of the cytosolic calcium (Ca2+) concentration following infection, which results in the downstream activation of immune response regulators. The bryophyte Physcomitrella patens has been shown to mount an immune response when exposed to bacteria, fungi, or chitin elicitation, in a manner similar to the one observed in Arabidopsis thaliana. Nevertheless, whether the response of P. patens to microorganism exposure is Ca2+ mediated is currently unknown. Here, we show that P. patens plants treated with chitin oligosaccharides exhibit Ca2+ oscillations, and that a calcium ionophore can stimulate the expression of defense-related genes. Treatment with chitin oligosaccharides also results in an inhibition of growth, which can be explained by the depolymerization of the apical actin cytoskeleton of tip growing cells. These results suggest that chitin-triggered calcium oscillations are conserved and were likely present in the common ancestor of bryophytes and vascular 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