Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 63, Issue 15, Pages 3951-3961Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf505169z
Keywords
cell wall; gene expression; texture; Vitis vinifera; water stress
Funding
- Fundacao para a Ciencia e Tecnologia (FCT) [PTDC/AGR-GPL/099624/2008, SFRH/BD/64047/2009]
- CBAA [PestOE/AGR/UI0240/2011]
- European project KBBE InnoVine [311775]
- European COST Action Quality Fruit [FA1106]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/64047/2009] Funding Source: FCT
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The cell wall (CW) is a dynamic Structure that responds to stress. Water shortage (WS) impacts grapevine berry composition and its sensorial quality. In the present work, berry texture, skin CW composition, and expression of remodeling genes were investigated in two Vitis vinifera varieties, Touriga Nacional (TN) and Trincadeira (TR), under two water regimes, Full Irrigation (FI) and No Irrigation (NI). The global results allowed an evident separation between both varieties and the water treatments. WS resulted in increased anthocyanin contents in both varieties, reduced amounts in cellulose and lignin at maturation, but an increase in arabinose-containing polysaccharides more tightly bound to the CW in TR. In response to WS, the majority of the CW related genes were down-regulated in a variety dependent pattern. The results support the assumption that WS affects grape berries by stiffening the CW through alteration in pectin structure, supporting its involvement in responses to environmental conditions.
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