Jiang Dai-Quan, Wang Hong-Yang, Kang Chuan-Zhi, Jiang Jing-Yi, DU Yong-Xi, Zhang Yan, Wang Sheng, Guo Lan-Ping
State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica,China Academy of Chinese Medical Sciences Beijing 100700, China.
State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica,China Academy of Chinese Medical Sciences Beijing 100700, China Hubei University of Chinese Medicine Wuhan 430065, China.
Zhongguo Zhong Yao Za Zhi. 2020 May;45(9):2009-2016. doi: 10.19540/j.cnki.cjcmm.20200302.106.
Numerous studies showed that the growth of medicinal plants in their native areas was simultaneously affected by abiotic stress combinations. Compared with single stress, plants have unique responses to a combination of different abiotic stresses and cannot be inferred directly from plants' responses to each individual stress. The effect of combined stresses on plants usually has three types of synergistic antagonism or independence. The secondary metabolism in the process of medicinal plant stress combination response also played a vital role, and environmental stresses can spur the accumulation of secondary metabolites, but under the stress combination, plants induce specific gene expression of key enzymes on secondary metabolic pathways, in turn, the accumulation of secondary metabolites against stress is formed. When plants are subjected to stress combination, the interaction of multiple signaling pathways makes it highly complex for plants to respond to stress combination. This paper summarized the effects of stress combination on physiological and secondary metabolism of medicinal plants, and discussed the related physiological, biochemical and molecular mechanisms. It provides theoretical basis for improving the adaptability of medicinal plants to adversity, improving the quality of Chinese medicinal materials, and further optimizing the cultivation of medicinal plants.
大量研究表明，药用植物在其原生区域的生长同时受到非生物胁迫组合的影响。与单一胁迫相比，植物对不同非生物胁迫组合有独特的响应，不能直接从植物对每种单一胁迫的响应中推断出来。复合胁迫对植物的影响通常有协同、拮抗或独立三种类型。药用植物胁迫组合响应过程中的次生代谢也起着至关重要的作用，环境胁迫可刺激次生代谢产物的积累，但在胁迫组合下，植物通过诱导次生代谢途径关键酶的特定基因表达，进而形成抵御胁迫的次生代谢产物积累。当植物受到胁迫组合时，多条信号通路的相互作用使得植物对胁迫组合的响应变得高度复杂。本文综述了胁迫组合对药用植物生理和次生代谢的影响，并探讨了相关的生理、生化和分子机制。它为提高药用植物对逆境的适应性、改善中药材品质以及进一步优化药用植物栽培提供了理论依据。
