Li Liangyu, Jiang Xiangyang, Zhou Quanli, Chen Jun, Zang Yu, Zhang Zaiwang, Gao Chen, Tang Xuexi, Shang Shuai
College of Marine Life Sciences, Ocean University of China, Qingdao 266005, China.
Shandong Provincial Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource and Environment Research Institute, Yantai 250299, China.
Microorganisms. 2022 May 30;10(6):1122. doi: 10.3390/microorganisms10061122.
invasion has negative effects on the structure and functioning of coastal wetland ecosystems. Therefore, many methods for controlling invasion have been developed. control methods can affect plant community, which results in changes in microbial communities and subsequent changes in soil ecological processes. However, the effects of controlling on soil microbial communities remain poorly understood. We aimed to examine the responses of bacterial and fungal communities to invasion control methods (cutting plus tilling treatment: CT; mechanical rolling treatment: MR). Soil bacterial and fungal community diversity and composition structure were assessed using high-throughput sequencing technology. The findings of the study showed that bacterial diversity and richness in the CT treatment reduced substantially, but fungal diversity and richness did not show any remarkable change. Bacterial and fungal diversity and richness in the MR treatment were not affected considerably. In addition, the two control methods significantly changed the soil microbial community structure. The relative abundance of bacteria negatively associated with nutrient cycling increased considerably in the CT treatment. The considerable increases in the relative abundance of certain bacterial taxa in the MR treatment may promote soil nutrient cycling. Compared with mechanical rolling, soil bacterial community diversity and structure were more sensitive to cutting plus tilling.
入侵对沿海湿地生态系统的结构和功能具有负面影响。因此，已经开发出许多控制入侵的方法。控制方法会影响植物群落，进而导致微生物群落发生变化，随后土壤生态过程也会改变。然而，控制措施对土壤微生物群落的影响仍知之甚少。我们旨在研究细菌和真菌群落对入侵控制方法（割除加翻耕处理：CT；机械碾压处理：MR）的响应。使用高通量测序技术评估土壤细菌和真菌群落的多样性及组成结构。研究结果表明，CT处理中细菌的多样性和丰富度大幅降低，但真菌的多样性和丰富度没有显著变化。MR处理中细菌和真菌的多样性及丰富度受影响不大。此外，这两种控制方法显著改变了土壤微生物群落结构。在CT处理中，与养分循环呈负相关的细菌相对丰度大幅增加。MR处理中某些细菌类群的相对丰度显著增加可能会促进土壤养分循环。与机械碾压相比，土壤细菌群落的多样性和结构对割除加翻耕更为敏感。
