The atypical E2F transcription factor DEL1 modulates growth–defense tradeoffs of host plants during root-knot nematode infection

Autor:	Shinichiro Sawa, Satoru Nakagami, Kentaro Saeki, Kei Toda, Takashi Ishida
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	0106 biological sciences 0301 basic medicine Arabidopsis lcsh:Medicine Lignin Plant Roots 01 natural sciences Article Host-Parasite Interactions Microbiology 03 medical and health sciences chemistry.chemical_compound Plant immunity Gene Expression Regulation Plant Plant Tumors Meloidogyne incognita Animals Arabidopsis thaliana Root-knot nematode Microbe Tylenchoidea lcsh:Science Pathogen Transcription factor Multidisciplinary biology lcsh:R food and beverages Plants Genetically Modified biology.organism_classification 030104 developmental biology Nematode chemistry lcsh:Q Salicylic Acid Plant sciences Salicylic acid Transcription Factors 010606 plant biology & botany
Zdroj:	Scientific Reports, Vol 10, Iss 1, Pp 1-8 (2020) Scientific Reports
ISSN:	2045-2322
DOI:	10.1038/s41598-020-65733-3
Popis:	In plants, growth–defense tradeoffs are essential for optimizing plant performance and adaptation under stress conditions, such as pathogen attack. Root-knot nematodes (RKNs) cause severe economic losses in many crops worldwide, although little is known about the mechanisms that control plant growth and defense responses during nematode attack. Upon investigation of Arabidopsis thaliana infected with RKN (Meloidogyne incognita), we observed that the atypical transcription factor DP-E2F-like 1 (DEL1) repressed salicylic acid (SA) accumulation in RKN-induced galls. The DEL1-deficient Arabidopsis mutant (del1-1) exhibited excessive SA accumulation in galls and is more resistant to RKN infection. In addition, excessive lignification was observed in galls of del1-1. On the other hand, the root growth of del1-1 is reduced after RKN infection. Taken together, these findings suggest that DEL1 plays an important role in the balance between plant growth and defense responses to RKN infection by controlling SA accumulation and lignification.
Databáze:	OpenAIRE
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