Climate change is challenging the resilience of grapevine (Vitis), one of the most important crops worldwide. Adapting viticulture to a hotter and drier future will require a multifaceted approach including the breeding of more drought-tolerant genotypes. In this study, we focused on plant hydraulics as a multi-trait system that allows the plant to maintain hydraulic integrity and gas exchange rates longer under drought. We quantified a broad range of drought-related traits within and across Vitis species, created in silico libraries of trait combinations, and then identified drought tolerant trait syndromes. By modeling the maintenance of hydraulic integrity of current cultivars and the drought tolerant trait syndromes, we identified elite ideotypes that increased the amount of time they could experience drought without leaf hydraulic failure. Generally, elites exhibited a trait syndrome with lower stomatal conductance, earlier stomatal closure, and a larger hydraulic safety margin. We demonstrated that, when compared with current cultivars, elite ideotypes have the potential to decrease the risk of hydraulic failure across wine regions under future climate scenarios. This study reveals the syndrome of traits that can be leveraged to protect grapevine from experiencing hydraulic failure under drought and increase drought tolerance.

中文翻译：

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模型辅助思维定型揭示了使葡萄栽培适应干燥气候的特征综合征。

气候变化正在挑战葡萄（葡萄）的恢复力，葡萄是世界上最重要的作物之一。使葡萄栽培适应更炎热和更干燥的未来将需要多方面的方法，包括培育更耐旱的基因型。在这项研究中，我们将植物水力学作为一种多性状系统，使植物能够在干旱下更长时间地保持水力完整性和气体交换率。我们量化了葡萄品种内部和跨品种的广泛干旱相关性状，在性状组合的计算机库中创建，然后确定了耐旱性状综合征。通过对当前栽培品种的水力完整性和耐旱性状综合征的维持进行建模，我们确定了增加他们在没有叶片水力衰竭的情况下经历干旱的时间的精英意识形态。一般来说，精英表现出气孔导度较低、气孔关闭较早和水力安全裕度较大的特征综合征。我们证明，与当前的栽培品种相比，在未来气候情景下，精英意识形态有可能降低整个葡萄酒产区的水力故障风险。这项研究揭示了可用于保护葡萄树在干旱条件下免受水力衰竭并提高耐旱性的性状综合征。