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The plant hypersensitive response: concepts, control and consequences

Author:
Balint‐Kurti, Peter
Source:
Molecular plant pathology 2019 v.20 no.8 pp. 1163-1178
ISSN:
1464-6722
Subject:
cell death, host plants, host-pathogen relationships, hypersensitive response, immune system, plant pathogens
Abstract:
The hypersensitive defence response is found in all higher plants and is characterized by a rapid cell death at the point of pathogen ingress. It is usually associated with pathogen resistance, though, in specific situations, it may have other consequences such as pathogen susceptibility, growth retardation and, over evolutionary timescales, speciation. Due to the potentially severe costs of inappropriate activation, plants employ multiple mechanisms to suppress inappropriate activation of HR and to constrain it after activation. The ubiquity of this response among higher plants despite its costs suggests that it is an extremely effective component of the plant immune system.
Agid:
6541629