Jasmonic acid is required for tomato acclimation to multifactorial stress combination
Jasmonic acid is required for tomato acclimation to multifactorial stress combination
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DOI：
10.1016/j.envexpbot.2023.105425
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发表时间：
2023-09
影响因子：
5.7
通讯作者：
Lidia S. Pascual;R. Mittler;Ranjita Sinha;M. Á. Peláez-Vico;M. López-Climent;V. Vives-Peris;A. Gómez-Cádenas;Sara I. Zandalinas
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文献类型：
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作者：
Lidia S. Pascual;R. Mittler;Ranjita Sinha;M. Á. Peláez-Vico;M. López-Climent;V. Vives-Peris;A. Gómez-Cádenas;Sara I. Zandalinas
由于全球变暖和气候变化，干旱、热浪和洪水等天气事件的数量和强度正在增加，导致全球农作物产量遭受重大损失。再加上不同污染物的累积，这种情况正在导致影响植物的环境因素的复杂性逐渐增加。我们最近使用术语“多因子胁迫组合”（MFSC）来描述同时或顺序发生的三种或更多种胁迫对植物的影响。在这里，我们表明，MFSC的6种不同的非生物胁迫（高光，热，氮缺乏，百草枯，镉，盐）有一个负面影响的生长，光系统II功能，光合作用活性的成熟番茄植株。我们进一步揭示了脯氨酸的积累和越来越多的胁迫因素之间的负相关性，这表明脯氨酸可能对植物在MFSC的不利影响。我们的研究结果进一步表明，激素水平和气孔反应的变化是应力/应力组合依赖，番茄突变体缺乏茉莉酸积累是更敏感的强光和它的组合与盐度和/或百草枯。两者合计，我们的研究表明，MFSC对番茄植物的影响是广泛的，光合作用和脯氨酸的积累是特别容易受到MFSC，茉莉酸是番茄适应MFSC涉及高光，盐度和百草枯。
As a result of global warming and climate change, the number and intensity of weather events such as droughts, heat waves, and floods are increasing, resulting in major losses in crop yield worldwide. Combined with the accumulation of different pollutants, this situation is leading to a gradual increase in the complexity of environmental factors affecting plants. We recently used the term ‘multifactorial stress combination’ (MFSC) to describe the impact of three or more stressors occurring simultaneously or sequentially on plants. Here, we show that a MFSC of six different abiotic stressors (high light, heat, nitrogen deficiency, paraquat, cadmium, and salinity) has a negative impact on the growth, photosystem II function, and photosynthetic activity of mature tomato plants. We further reveal a negative correlation between proline accumulation and the increasing number of stress factors combined, suggesting that proline could have an adverse effect on plants during MFSC. Our findings further indicate that alterations in hormonal levels and stomatal responses are stress/stress combination-dependent, and that a tomato mutant deficient in jasmonic acid accumulation is more sensitive to high light and its combinations with salinity and/or paraquat. Taken together, our study reveals that the effects of MFSC on tomato plants are broad, that photosynthesis and proline accumulation are especially vulnerable to MFSC, and that jasmonic acid is required for tomato acclimation to MFSCs involving high light, salinity and paraquat.