PDF(Pubmed)
Abstract：
BACKGROUND: Myxococcota, characterized by their distinct social lifestyles, are widely distributed micro-predators in global sediments. They can feed on a wide range of bacterial, archaeal, and fungal prey. Myxococcota are capable of producing diverse secondary metabolites, playing key roles in microbial food webs, and regulating the microbial community structures in different ecosystems. However, Myxococcota are rarely pure cultured due to the challenging and stringent culturing conditions. Their natural distribution, niche differentiation, and predator-prey relationships in a specific habitat are poorly understood.
RESULTS: In this study, we conducted a comprehensive analysis of the 16S rRNA gene sequence data from public databases and our collection. We compared the abundance, diversity, and distribution patterns of Myxococcota in various habitats, with a specific focus on mangroves. We found that Myxococcota accounted for 1.45% of the total prokaryotes in global sediments based on the abundance of 16S rRNA genes. Myxococcota are abundant and diverse in mangrove sediments. They tend to be more generalistic in mangroves than in other habitats due to their wide niche breadth. Besides, the deterministic processes (variable selection) influenced the assembly of mangrove Myxococcota communities significantly more than stochastic processes. Further, we determined that environmental factors explained a greater amount of total community variation in mangrove Myxococcota than geographical variables (latitude and sediment depth). In the end, through the analysis of microbial co-occurrence networks, Myxococcota emerges as a key component and functions as a connector in the mangrove microbial community.
CONCLUSIONS: Our study enhances comprehension of mangrove Myxococcota\'s biogeography, assembly patterns, driving factors, and co-occurrence relationships, as well as highlights their unique niche and ecological importance in mangrove sediments.
RESULTS: In this study, we conducted a comprehensive analysis of the 16S rRNA gene sequence data from public databases and our collection. We compared the abundance, diversity, and distribution patterns of Myxococcota in various habitats, with a specific focus on mangroves. We found that Myxococcota accounted for 1.45% of the total prokaryotes in global sediments based on the abundance of 16S rRNA genes. Myxococcota are abundant and diverse in mangrove sediments. They tend to be more generalistic in mangroves than in other habitats due to their wide niche breadth. Besides, the deterministic processes (variable selection) influenced the assembly of mangrove Myxococcota communities significantly more than stochastic processes. Further, we determined that environmental factors explained a greater amount of total community variation in mangrove Myxococcota than geographical variables (latitude and sediment depth). In the end, through the analysis of microbial co-occurrence networks, Myxococcota emerges as a key component and functions as a connector in the mangrove microbial community.
CONCLUSIONS: Our study enhances comprehension of mangrove Myxococcota\'s biogeography, assembly patterns, driving factors, and co-occurrence relationships, as well as highlights their unique niche and ecological importance in mangrove sediments.
摘要：
背景：粘球菌，以他们独特的社会生活方式为特征，是全球沉积物中广泛分布的微捕食者。它们可以以多种细菌为食，考古,和真菌猎物。粘球菌能够产生多种次生代谢产物，在微生物食物网中发挥关键作用，调节不同生态系统中的微生物群落结构。然而,由于具有挑战性和严格的培养条件，粘球菌很少进行纯培养。它们的自然分布，生态位分化，并且对特定栖息地中的捕食者-猎物关系知之甚少。
结果：在这项研究中，我们对公共数据库和我们收集的16SrRNA基因序列数据进行了全面分析.我们比较了丰度，多样性,以及粘球菌在不同栖息地的分布模式，特别关注红树林。根据16SrRNA基因的丰度，我们发现粘液菌占全球沉积物中原核生物总数的1.45％。粘液菌在红树林沉积物中含量丰富且种类繁多。由于其广泛的生态位宽度，它们在红树林中往往比在其他栖息地中更为普遍。此外,确定性过程（变量选择）对红树林Myxococcota群落组装的影响远大于随机过程。Further,我们确定，与地理变量（纬度和沉积物深度）相比，环境因素解释了红树林Myxococcota的总群落变异量。最后,通过对微生物共生网络的分析，粘液菌是红树林微生物群落中的关键成分，并起着连接器的作用。
结论：我们的研究提高了对红树林粘液菌生物地理学的理解，装配模式,驱动因素,和共现关系，并突出了它们在红树林沉积物中的独特生态位和生态重要性。
结果：在这项研究中，我们对公共数据库和我们收集的16SrRNA基因序列数据进行了全面分析.我们比较了丰度，多样性,以及粘球菌在不同栖息地的分布模式，特别关注红树林。根据16SrRNA基因的丰度，我们发现粘液菌占全球沉积物中原核生物总数的1.45％。粘液菌在红树林沉积物中含量丰富且种类繁多。由于其广泛的生态位宽度，它们在红树林中往往比在其他栖息地中更为普遍。此外,确定性过程（变量选择）对红树林Myxococcota群落组装的影响远大于随机过程。Further,我们确定，与地理变量（纬度和沉积物深度）相比，环境因素解释了红树林Myxococcota的总群落变异量。最后,通过对微生物共生网络的分析，粘液菌是红树林微生物群落中的关键成分，并起着连接器的作用。
结论：我们的研究提高了对红树林粘液菌生物地理学的理解，装配模式,驱动因素,和共现关系，并突出了它们在红树林沉积物中的独特生态位和生态重要性。
