Role of Endophytes and Rhizosphere Microbes in Promoting the Invasion of Exotic Plants in Arid and Semi-Arid Areas: A Review
Role of Endophytes and Rhizosphere Microbes in Promoting the Invasion of Exotic Plants in Arid and Semi-Arid Areas: A Review
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DOI：
10.3390/su132313081
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发表时间：
2021-12-01
期刊：
影响因子：
3.9
通讯作者：
Saadoun, Ismail
中科院分区：
文献类型：
--
作者：
Elsheikh, Elsiddig A. E.;El-Keblawy, Ali;Saadoun, Ismail
植物内生菌和根际微生物支持入侵物种对环境胁迫的适应。本文综述了内生菌、根际微生物（特别是共生固氮菌）、菌根和病原菌对干旱半干旱地区植物入侵的影响。内生菌和土壤微生物增强营养物质的获取以增强入侵植物免疫系统和/或负面地影响原生植物。此外，菌根真菌与入侵植物之间的正反馈增强了外来种的竞争能力，为它们提供了更多的成功、建立和优势的机会。微生物及其次生代谢产物通过改变土壤微生物群落结构和碳生物量以及酶活性促进植物物种入侵，从而改善土壤性质和过程。并讨论了外来入侵植物对相关生物区系的负面影响和化感物质的作用。可以得出结论，内生菌与根际微生物相互作用，以促进入侵植物物种在干旱和半干旱地区发生在其他生态系统中的方式相似，不同的是在途径和反应，这取决于当时的非生物因素。为了了解共生微生物在入侵生物学中的作用，需要进行更多的跨学科田间实验，将微生物、生物技术和分子方法结合起来。
Endophytes and rhizospheric microorganisms support invasive species' adaptation to environmental stresses. Here, we review the impacts of endophytes, rhizospheric microbes (particularly symbiotic nitrogen-fixers), mycorrhiza and pathogens on plant invasion in arid and semi-arid areas. Endophytes and soil microorganisms either enhance nutrient acquisition for enhancing the invasive plant immune system and/or negatively affect native plants. In addition, the positive feedback between mycorrhizal fungi and invasive plants enhances the competitive ability of the aliens, providing them more opportunities for success, establishment, and dominance. The microbes and their secondary metabolites promote invasive plant species by changing soil microbial community structure and carbon biomass as well as enzyme activity, which improves soil properties and processes. The negative impact of invasive exotic plants on the associated biota and the role of allelochemicals are also discussed. It could be concluded that endophytes interact with rhizosphere microbes to promote invasive plant species in arid and semi-arid areas in a way similar to what happens in other ecosystems; the differences are in the pathways and reactions, which depend upon the prevailing abiotic factors. More interdisciplinary field experiments integrating microbial, biotechnological, and molecular approaches are needed to understand the role of symbiotic microbes in invasion biology.