2020-12-25 16:51:34 来源:必威草业学院 浏览数:0
近日,必威BETWAY官网(草业学院)孙娟教授团队在探索黄河三角洲盐碱地微生物生态功能方面取得重要进展。两项成果Assessing the effect of soil salinization on soil microbial respiration and diversities under incubation conditions和Soil salinity drives the distribution patterns and ecological functions of fungi in saline-alkali land in the Yellow River Delta, China相继发表在Applied Soil Ecology(IF:3.187,中科院JCR农林科学2区)和Frontiers in Microbiology(IF:4.235,中科院JCR生物学2区Top期刊)上。课题组成员杨超副教授为论文的第一作者,孙娟教授为通讯作者,betway必威为第一通讯单位。
盐碱地生态脆弱、土地生产力低下,亟需对盐碱地进行生态修复与治理。近年来,土壤微生物结构和多样性的研究取得快速发展,对土壤微生物功能的认识越来越深入,深入挖掘耐盐碱土壤微生物的功能,发挥微生物的生物肥料作用可为盐碱地生产力提升提供重要方向。
Fig.1. The study region and five salinity gradients with different EC values.
孙娟课题组利用高通量测序技术,对比分析了半干旱草原地区和黄河三角洲地区盐碱地的主要微生物结构及生态功能。研究发现,与对照相比,高盐碱程度的土壤中拟杆菌(Bacteroidetes)、芽单胞菌(Gemmatimonadetes)和枝孢菌(Cladosporiaceae)的丰度较高,耐盐性极强,尤其是真菌类的枝孢菌在盐碱胁迫微环境中与其他真菌联系密切。该研究结果为耐盐性微生物菌肥的开发奠定基础。上述研究工作得到了山东省“草学一流学科”计划项目和国家牧草产业技术体系项目的支持。
Fig. 2. The relative abundances of soil bacterial (a) and the nonmetric multidimensional scaling ordinations based on the mean abundance value of the bacterial (b) communities in four different salinized soils.
Fig. 3. The enterotype analysis for five different salinized soils: (a) the clustering on the first two principal components, and the proportions of fungal taxa characteristic of (b) Nectriaceae and (c) Cladosporiaceae.
Fig.4. The network analysis of the fungal interactions from non-saline soils to extreme salinity soils.