Rootstock influences the effect of grapevine leafroll-associated viruses on berry development and metabolism via abscisic acid signalling.
Mol Plant Pathol
; 22(8): 984-1005, 2021 08.
Article
in En
| MEDLINE
| ID: mdl-34075700
ABSTRACT
Grapevine leafroll-associated virus (GLRaV) infections are accompanied by symptoms influenced by host genotype, rootstock, environment, and which individual or combination of GLRaVs is present. Using a dedicated experimental vineyard, we studied the responses to GLRaVs in ripening berries from Cabernet Franc grapevines grafted to different rootstocks and with zero, one, or pairs of leafroll infection(s). RNA sequencing data were mapped to a high-quality Cabernet Franc genome reference assembled to carry out this study and integrated with hormone and metabolite abundance data. This study characterized conserved and condition-dependent responses to GLRaV infection(s). Common responses to GLRaVs were reproduced in two consecutive years and occurred in plants grafted to different rootstocks in more than one infection condition. Though different infections were inconsistently distinguishable from one another, the effects of infections in plants grafted to different rootstocks were distinct at each developmental stage. Conserved responses included the modulation of genes related to pathogen detection, abscisic acid (ABA) signalling, phenylpropanoid biosynthesis, and cytoskeleton remodelling. ABA, ABA glucose ester, ABA and hormone signalling-related gene expression, and the expression of genes in several transcription factor families differentiated the effects of GLRaVs in berries from Cabernet Franc grapevines grafted to different rootstocks. These results support that ABA participates in the shared responses to GLRaV infection and differentiates the responses observed in grapevines grafted to different rootstocks.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Abscisic Acid
/
Vitis
Type of study:
Risk_factors_studies
Language:
En
Journal:
Mol Plant Pathol
Year:
2021
Document type:
Article
Affiliation country:
United States