PDF(Pubmed)
Abstract：
Heavy metal pollution poses significant environmental challenges, and understanding how plants and endophytic bacteria interact to mitigate these challenges is of utmost importance. In this study, we investigated the roles of endophytic bacteria, particularly Chryseobacterium and Comamonas, in Leersia hexandra Swartz (L. hexandra) in response to chromium and nickel co-pollution. Our results demonstrated the remarkable tolerance of Chryseobacterium and Comamonas to heavy metals, and their potential to become dominant species in the presence of co-pollution. We observed a close relationship between these endophytic bacteria and the significant differences in metabolites, particularly carbohydrates, flavonoids, and amino acids in L. hexandra. These findings shed light on the potential of endophytic bacteria to promote the production of aspartic acid and other metabolites in plants as a response to abiotic stressors. Furthermore, our study presents a new direction for plant and bioremediation strategies in heavy metal pollution and enhances our understanding of L. hexandra\'s mechanisms for heavy metal tolerance.
摘要：
重金属污染对环境构成重大挑战，了解植物和内生细菌如何相互作用以减轻这些挑战至关重要。在这项研究中,我们研究了内生细菌的作用，特别是金黄杆菌和科马马纳斯，在LeersiahexandraSwartz(L.hexandra)以应对铬和镍的共污染。我们的研究结果证明了金黄杆菌和Comamonas对重金属的显着耐受性，以及它们在共污染存在下成为优势物种的潜力。我们观察到这些内生细菌之间的密切关系和代谢物的显着差异，特别是碳水化合物，黄酮类化合物，和氨基酸在L.hexandra。这些发现揭示了内生细菌促进植物中天冬氨酸和其他代谢物产生的潜力，作为对非生物胁迫的反应。此外，我们的研究为重金属污染的植物和生物修复策略提供了新的方向，并增强了我们对L.hexandra耐重金属机制的理解。
