Transcriptional Responses to Pre-flowering Leaf Defoliation in Grapevine Berry from Different Growing Sites, Years, and Genotypes

Frontiers in Plant Science
Sara ZenoniStefano Poni

Abstract

Leaf removal is a grapevine canopy management technique widely used to modify the source-sink balance and/or microclimate around berry clusters to optimize fruit composition. In general, the removal of basal leaves before flowering reduces fruit set, hence achieving looser clusters, and improves grape composition since yield is generally curtailed more than proportionally to leaf area itself. Albeit responses to this practice seem quite consistent, overall vine performance is affected by genotype, environmental conditions, and severity of treatment. The physiological responses of grape varieties to defoliation practices have been widely investigated, and just recently a whole genome transcriptomic approach was exploited showing an extensive transcriptome rearrangement in berries defoliated before flowering. Nevertheless, the extent to which these transcriptomic reactions could be manifested by different genotypes and growing environments is entirely unexplored. To highlight general responses to defoliation vs. different locations, we analyzed the transcriptome of cv. Sangiovese berries sampled at four development stages from pre-flowering defoliated vines in two different geographical areas of Italy. We obtained and validated f...Continue Reading

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Citations

Jan 26, 2021·Frontiers in Plant Science·Joanna M GambettaMatthias Friedel
Mar 1, 2019·G3 : Genes - Genomes - Genetics·Andrea MinioDario Cantu

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Datasets Mentioned

BETA
GSE92980
2

Methods Mentioned

BETA
Chip
PCR
PCA
glycosylation

Software Mentioned

Venny
Singular Enrichment Analysis ( SEA )
SAS
SAM
SIMCA P +
Agilent Chemstation
R
AgriGO
LingRegPCR

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