期刊
JOURNAL OF EXPERIMENTAL BOTANY
卷 61, 期 5, 页码 1251-1255出版社
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erp326
关键词
Calcium spiking; ethylene; intercellular invasion; root hair invasion; Sesbania rostrata
资金
- European Union Grain Legume Integrated Project [Food-CT-2004-506223]
- European Molecular Biology Organization
- Biotechnology and Biological Sciences Research Council [BBS/E/J/000CA336] Funding Source: researchfish
- BBSRC [BBS/E/J/000CA336] Funding Source: UKRI
Water-tolerant nodulation is an adaptation of legumes that grow in wet or temporarily flooded habitats. This nodulation mode takes place at lateral root bases via intercellular bacterial invasion in cortical infection pockets. The tropical legume Sesbania rostrata has become a model for the study of the molecular basis of crack entry nodulation compared with root hair curl nodulation. For intercellular invasion, Nodulation Factor (NF) signalling recruits an ethylene-dependent, common Sym gene-independent pathway, leading to local cell death. The NF structure requirements are less stringent than for intracellular invasion in root hairs, which is correlated with a very specific NF-induced calcium spiking signature, presumably necessary for correct gene expression to assemble a functional entry complex in the epidermis.
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