Resolving intergenotypic Striga resistance in sorghum.
Cell wall-based resistance
comparative transcriptomics
lignin-based resistance
parasitic plants
pathogen-associated molecular patterns
programmed cell death
weighted gene co-expression networks
Journal
Journal of experimental botany
ISSN: 1460-2431
Titre abrégé: J Exp Bot
Pays: England
ID NLM: 9882906
Informations de publication
Date de publication:
13 09 2023
13 09 2023
Historique:
received:
08
12
2022
accepted:
29
05
2023
medline:
14
9
2023
pubmed:
1
6
2023
entrez:
1
6
2023
Statut:
ppublish
Résumé
Genetic underpinnings of host-pathogen interactions in the parasitic plant Striga hermonthica, a root parasitic plant that ravages cereals in sub-Saharan Africa, are unclear. We performed a comparative transcriptome study on five genotypes of sorghum exhibiting diverse resistance responses to S. hermonthica using weighted gene co-expression network analysis (WGCNA). We found that S. hermonthica elicits both basal and effector-triggered immunity-like a bona fide pathogen. The resistance response was genotype specific. Some resistance responses followed the salicylic acid-dependent signaling pathway for systemic acquired resistance characterized by cell wall reinforcements, lignification, and callose deposition, while in others the WRKY-dependent signaling pathway was activated, leading to a hypersensitive response. In some genotypes, both modes of resistance were activated, while in others either mode dominated the resistance response. Cell wall-based resistance was common to all sorghum genotypes but strongest in IS2814, while a hypersensitive response was specific to N13, IS9830, and IS41724. WGCNA further allowed for pinpointing of S. hermonthica resistance causative genes in sorghum, including glucan synthase-like 10 gene, a pathogenesis-related thaumatin-like family gene, and a phosphoinositide phosphatase gene. Such candidate genes will form a good basis for subsequent functional validation and possibly future resistance breeding.
Identifiants
pubmed: 37260405
pii: 7187916
doi: 10.1093/jxb/erad210
pmc: PMC10498017
doi:
Types de publication
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
5294-5306Informations de copyright
© The Author(s) 2023. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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