Amma Sarasa, Toju Hirokazu, Wachrinrat Chongrak, Sato Hirotoshi, Tanabe Akifumi S, Artchawakom Taksin, Kanzaki Mamoru
Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University.
Center for Ecological Research, Kyoto University.
Microbes Environ. 2018 Jul 4;33(2):135-143. doi: 10.1264/jsme2.ME17168. Epub 2018 May 30.
Although fungi play essential roles in nutrient cycles and plant growth in forest ecosystems, limited information is currently available on the community compositions of soil fungi in tropical forests. Few studies have examined fungal community structures in seasonal tropical forests, in which forest fires potentially have a large impact on above- and belowground community processes. Based on high-throughput sequencing technologies, we herein examined the diversity and community structures of soil fungi in dry seasonal tropical forests in Sakaerat, northeast Thailand. We found that fungal community compositions diverged among dry evergreen, dry deciduous, and fire-protected dry deciduous forests within the region. Although tree species diversity did not positively correlate with soil fungal diversity, the coverage of an understory bamboo species (Vietnamosasa pusilla) showed a strong relationship with fungal community structures. Our community ecological analysis also yielded a list of fungi showing habitat preferences for either of the neighboring evergreen and deciduous forests in Sakaerat. The present results provide a basis for managing soil fungal communities and aboveground plant communities in seasonal tropical forests in Southeast Asia.
虽然真菌在森林生态系统的养分循环和植物生长中发挥着重要作用，但目前关于热带森林土壤真菌群落组成的信息有限。很少有研究调查过季节性热带森林中的真菌群落结构，在这类森林中，森林火灾可能会对地上和地下群落过程产生重大影响。基于高通量测序技术，我们在此研究了泰国东北部呵叻府季节性干旱热带森林中土壤真菌的多样性和群落结构。我们发现，该地区的干燥常绿林、干燥落叶林和防火干燥落叶林中的真菌群落组成存在差异。虽然树种多样性与土壤真菌多样性没有正相关关系，但一种林下竹种（越南少穗竹）的覆盖度与真菌群落结构呈现出很强的相关性。我们的群落生态分析还列出了一系列真菌，它们对呵叻府相邻的常绿林和落叶林中的某一种表现出栖息地偏好。目前的研究结果为东南亚季节性热带森林中土壤真菌群落和地上植物群落的管理提供了依据。
