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Cutting the Gordian knot of abiotic stress in grapevine: from the test tube to climate change adaptation
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Resumo(s)
In Mediterranean climate areas, the available scenarios for climate change
suggest an increase in the frequency of heat waves and severe drought in
summer. Grapevine (Vitis vinifera L.) is a traditional Mediterranean species
and is the most valuable fruit crop in the world. Currently, viticulture must
adjust to impending climate changes that are already pushing vine-growers
toward the use of irrigation, with the concomitant losses in wine quality, and
researchers to study tolerance to stress in existing genotypes. The viticulture
and winemaking worlds are in demand to understand the physiological
potential of the available genotypes to respond to climate changes. In this
review, we will focus on the cross-talk between common abiotic stresses
that currently affect grapevine productivity and that are prone to affect it
deeper in the future.We will discuss results obtained under three experimental
stress conditions and that call for specific responses: (1) acclimatization of in
vitro plantlets, (2) stress combinations in controlled conditions for research
purposes, (3) extreme events in the field that, driven by climate changes, are
pushing Mediterranean species to the limit. The different levels of tolerance to
stress put in evidence by the plasticity of phenotypic and genotypic response
mechanisms, will be addressed. This information is relevant to understand
varietal adaptation to impending climate changes and to assist vine growers
in choosing genotypes and viticulture practices
Descrição
Palavras-chave
grapevine abiotic stress climate change
Contexto Educativo
Citação
Editora
John Wiley and Sons