College of Life and Environment Science, Huangshan University, Huangshan, Anhui 245041, P.R. China.
Forestry Science and Technology Promotion Center of Shexian, Huangshan, Anhui 245200, P.R. China.
J Microbiol Biotechnol. 2023 Oct 28;33(10):1299-1308. doi: 10.4014/jmb.2304.04054. Epub 2023 Jul 21.
is an important economic nut tree that is endemic to eastern China. As such, outbreaks of root rot disease in result in reduced yields and serious economic losses. Moreover, while soil bacterial communities play a crucial role in plant health and are associated with plant disease outbreaks, their diversity and composition in are not clearly understood. In this study, Proteobacteria, Acidobacteria, and Actinobacteria were found to be the most dominant bacterial communities (accounting for approximately 80.32% of the total) in the root tissue, rhizosphere soil, and bulk soil of healthy specimens. Further analysis revealed the abundance of genera belonging to Proteobacteria, namely, , , , , and , was higher in the root tissues of healthy specimens than in those of diseased and dead trees. In addition, the abundance of four genera belonging to Actinobacteria, namely, , , , and , was significantly higher in the root tissues of healthy specimens than in those of diseased and dead trees. Altogether, these results suggest that disruption in the balance of these bacterial communities may be associated with the development of root rot in , and further, our study provides theoretical guidance for the isolation and control of pathogens and diseases related to this important tree species.
是中国特有的重要经济坚果树种。因此， 根腐病的爆发会导致产量减少和严重的经济损失。此外，尽管土壤细菌群落对植物健康起着至关重要的作用，并与植物病害的爆发有关，但它们在 中的多样性和组成尚不清楚。在这项研究中，发现变形菌门、酸杆菌门和放线菌门是健康 标本根组织、根际土壤和土壤中最占优势的细菌群落（约占总数的 80.32%）。进一步分析显示，属于变形菌门的属，即 、 、 、 、和 ，在健康 标本的根组织中的丰度高于患病和死亡树木的根组织中的丰度。此外，属于放线菌门的四个属，即 、 、 、和 ，在健康 标本的根组织中的丰度明显高于患病和死亡树木的根组织中的丰度。总的来说，这些结果表明这些细菌群落平衡的破坏可能与 的根腐病的发生有关，此外，我们的研究为分离和控制与这一重要树种有关的病原体和疾病提供了理论指导。
