Open AccessRootstock influences the effect of grapevine leafroll‐associated viruses on berry development and metabolism via abscisic acid signalling
Author(s) -
Vondras Amanda M.,
Lerno Larry,
Massonnet Mélanie,
Minio Andrea,
Rowhani Adib,
Liang Dingren,
Garcia Jadran,
Quiroz Daniela,
FigueroaBalderas Rosa,
Golino Deborah A.,
Ebeler Susan E.,
Al Rwahnih Maher,
Cantu Dario
Publication year - 2021
Publication title -
molecular plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.945
H-Index - 103
eISSN - 1364-3703
pISSN - 1464-6722
DOI - 10.1111/mpp.13077
Subject(s) - rootstock , abscisic acid , biology , vineyard , berry , defence mechanisms , phenylpropanoid , gene , auxin , botany , citrus tristeza virus , ripening , horticulture , virus , genetics , biosynthesis , plant virus
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.