Plant behaviour under combined stress: tomato responses to combined salinity and pathogen stress
Plant behaviour under combined stress: tomato responses to combined salinity and pathogen stress
复制标题
DOI：
10.1111/tpj.13800
复制
发表时间：
2018-02-01
期刊：
影响因子：
7.2
通讯作者：
van der Linden, Gerard
中科院分区：
文献类型：
--
作者：
Bai, Yuling;Kissoudis, Christos;van der Linden, Gerard
作物在其生命周期中受到各种胁迫，包括盐度等非生物胁迫因素和病原菌等生物胁迫因素。植物已经对这些胁迫因子产生了大量的防御和适应反应。在现场，不同的应力因素大多是同时发生的，导致了一种新的应力状态，即复合应力。有证据表明，植物对病原菌的抗性可以通过非生物胁迫因子来减弱或增强。由于耐逆性研究主要集中在植物对单个胁迫的反应上，对植物适应复合胁迫的能力的了解是有限的。在过去的几年里，我们研究了模式作物番茄在盐胁迫条件下对白粉病的抗性，目的是了解植物对更广泛的非生物和生物组合胁迫的适应性要求。我们揭示了番茄植株对盐胁迫-病原菌复合胁迫的特异性反应，这种反应随着盐胁迫强度和植物抗性基因的不同而不同。此外，激素由于其复杂的调节和串扰，在番茄对复合胁迫的适应中发挥了关键作用。在这篇综述中，我们试图了解植物对非生物和生物胁迫组合的响应的复杂性，重点是番茄对组合盐分和病原菌胁迫的反应(遗传控制和信号通路的相互作用)。此外，我们还就如何设计新的策略来培育在不同环境条件下持续表现的作物提出了建议。
Crop plants are subjected to a variety of stresses during their lifecycle, including abiotic stress factors such as salinity and biotic stress factors such as pathogens. Plants have developed a multitude of defense and adaptation responses to these stress factors. In the field, different stress factors mostly occur concurrently resulting in a new state of stress, the combined stress. There is evidence that plant resistance to pathogens can be attenuated or enhanced by abiotic stress factors. With stress tolerance research being mostly focused on plant responses to individual stresses, the understanding of a plant's ability to adapt to combined stresses is limited. In the last few years, we studied powdery mildew resistance under salt stress conditions in the model crop plant tomato with the aim to understand the requirements to achieve plant resilience to a wider array of combined abiotic and biotic stress combinations. We uncovered specific responses of tomato plants to combined salinity-pathogen stress, which varied with salinity intensity and plant resistance genes. Moreover, hormones, with their complex regulation and cross-talk, were shown to play a key role in the adaptation of tomato plants to the combined stress. In this review, we attempt to understand the complexity of plant responses to abiotic and biotic stress combinations, with a focus on tomato responses (genetic control and cross-talk of signaling pathways) to combined salinity and pathogen stresses. Further, we provide recommendations on how to design novel strategies for breeding crops with a sustained performance under diverse environmental conditions.