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The role of endophytes in secondary metabolites accumulation in medicinal plants under abiotic stress
South African Journal of Botany ( IF 2.7 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.sajb.2020.06.023
Abdulazeez A Ogbe , Jeffrey F. Finnie , Johannes Van Staden

Abstract Endophytes are microbial symbionts of plants which dwell within the internal tissues of healthy plants without the manifestation of any infection symptoms on their hosts. In addition to being vital to the growth and development of their host, endophytes also assist their medicinal plant host species in accumulating some highly coveted plant secondary metabolites under various abiotic stress conditions. The type and quantity of secondary metabolites accumulated by medicinal plants under abiotic stress rely on the age and developmental phase of the host as well as the taxonomic groupings of both symbionts. Medicinal plants during their life cycle become vulnerable to different types of tissue-damaging abiotic stress factors that hamper their survival and productivity. These stressors are connected to an appreciable build-up of reactive oxygen species (ROS) in plant tissues. ROS are a reactive group of chemicals that interact with several metabolites and cellular molecules, thus prompting irreversible metabolic anomalies and cell necrosis. Reactive oxygen species also serve as stress signals to medicinal plants and to ensure their survival; these plants produce antioxidants (both enzymatic and non-enzymatic) to maintain the integrity of their system. Some of the antioxidants are, however, produced as a result of the symbiotic relationship between medicinal plants and their endophytes. In this review, we aim to examine the interaction between endophytes and their medicinal plant host under abiotic stress.

中文翻译:

内生菌在非生物胁迫下药用植物次生代谢产物积累中的作用

摘要 内生菌是植物的微生物共生体,寄居在健康植物的内部组织中,对宿主不表现出任何感染症状。除了对其宿主的生长和发育至关重要之外,内生菌还帮助其药用植物宿主物种在各种非生物胁迫条件下积累一些令人垂涎的植物次生代谢产物。药用植物在非生物胁迫下积累的次生代谢物的类型和数量取决于宿主的年龄和发育阶段以及两种共生体的分类群。药用植物在其生命周期中变得容易受到阻碍其生存和生产力的不同类型的组织损伤非生物胁迫因素的影响。这些压力源与植物组织中活性氧 (ROS) 的显着积累有关。ROS 是一组反应性化学物质,可与多种代谢物和细胞分子相互作用,从而导致不可逆的代谢异常和细胞坏死。活性氧还可以作为药用植物的应激信号并确保它们的生存;这些植物产生抗氧化剂(酶促和非酶促)以维持其系统的完整性。然而,一些抗氧化剂是由于药用植物与其内生菌之间的共生关系而产生的。在这篇综述中,我们旨在研究非生物胁迫下内生菌与其药用植物宿主之间的相互作用。ROS 是一组反应性化学物质,可与多种代谢物和细胞分子相互作用,从而导致不可逆的代谢异常和细胞坏死。活性氧还可以作为药用植物的应激信号并确保它们的生存;这些植物产生抗氧化剂(酶促和非酶促)以维持其系统的完整性。然而,一些抗氧化剂是由于药用植物与其内生菌之间的共生关系而产生的。在这篇综述中,我们旨在研究非生物胁迫下内生菌与其药用植物宿主之间的相互作用。ROS 是一组反应性化学物质,可与多种代谢物和细胞分子相互作用,从而导致不可逆的代谢异常和细胞坏死。活性氧还可以作为药用植物的应激信号并确保它们的生存;这些植物产生抗氧化剂(酶促和非酶促)以维持其系统的完整性。然而,一些抗氧化剂是由于药用植物与其内生菌之间的共生关系而产生的。在这篇综述中,我们旨在研究非生物胁迫下内生菌与其药用植物宿主之间的相互作用。这些植物产生抗氧化剂(酶促和非酶促)以维持其系统的完整性。然而,一些抗氧化剂是由于药用植物与其内生菌之间的共生关系而产生的。在这篇综述中,我们旨在研究非生物胁迫下内生菌与其药用植物宿主之间的相互作用。这些植物产生抗氧化剂(酶促和非酶促)以维持其系统的完整性。然而,一些抗氧化剂是由于药用植物与其内生菌之间的共生关系而产生的。在这篇综述中,我们旨在研究非生物胁迫下内生菌与其药用植物宿主之间的相互作用。
更新日期:2020-11-01
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