Spatial heterogeneity of microbial community and functional groups of different cushion species in alpine scree habitat in northwestern Yunnan,China

KIB OpenIR

	Spatial heterogeneity of microbial community and functional groups of different cushion species in alpine scree habitat in northwestern Yunnan,China
	Xiao Zhuwei; Song Minshu; Zhou Jie; Shi Lingling; Yang Yang
	2021
发表期刊	Chinese Journal of Applied and Environmental Biology
ISSN	1006-687X
卷号	27 期号:5 页码:1119-1131 1006-687X(2021)27:5<1119:YNXBBG>2.0.TX;2-8
摘要	Cushion species,one of the most pronounced examples of the highly specialized morphology occurring in systematically distant plant species in alpine areas,are well documented for their incredible capacity to modify soil conditions.They can affect both abiotic factors(e.g.,water and nutrient contents)and biotic factors(e.g.,microbial community diversity,composition,and structure).However,the spatial distributions of microbial communities and their functional groups among different plant species sharing similar cushion morphologies and their correlations with above-and belowground plant traits and soil chemical characteristics remain largely unstudied.In this work,we selected three typical cushion plant species(i.e.,Androsace delavayi,Arenaria polytrichoides,and Rhodiola coccinea var.scabrida)that occur in the alpine scree habitat of Baima Snow Mountain,Deqen County,northwestern Yunnan Province,and examined the microbial community of soil samples collected at four different spatial locations therein: inside and at the edge of the aboveground cushion structure,the rhizosphere,and surrounding bare ground uncovered by any cushion species using highthroughput sequencing technology.The main findings were as follows.(1)There were significant differences in microbial community richness(observed species)and diversity(Shannon index)at the same spatial location among different cushion species but no significant spatial differences among each of these.Of the three cushion species studied,R.coccinea var.scabrida exhibited the greatest microbial community richness at all four spatial locations,while the microbial community richness and diversity in the rhizosphere of Androsace delavayi were the lowest.(2)In terms of the microbial community diversity,there was a significantly positive relationship soil pH and root length.Finally,(3)the microbial community exhibited clear species-specific and spatial differences in their compositions,dominant taxa,and functional groups,with a great proportion of some bacteria in nitrogen cycling groups(e.g.,those performing nitrification,denitrification,and nitrate reduction).This suggested that microbes could potentially facilitate nutrient absorption by cushion plants growing in alpine scree,which is typically a nutrient-poor habitat.By demonstrating evidence of pronounced species-specific and spatial difference in the microbial community among different cushion species and highlighting the importance of environmental conditions(soil pH)and plant traits(root length and/or cushion structure),our study provides new information that improves the understanding of plant-microbe interactions at high elevations and their ecological significance to the adaptation of cushion species to alpine scree habitats.
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73811
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Xiao Zhuwei,Song Minshu,Zhou Jie,et al. Spatial heterogeneity of microbial community and functional groups of different cushion species in alpine scree habitat in northwestern Yunnan,China[J]. Chinese Journal of Applied and Environmental Biology,2021,27(5):1119-1131 1006-687X(2021)27:5<1119:YNXBBG>2.0.TX;2-8.
APA	Xiao Zhuwei,Song Minshu,Zhou Jie,Shi Lingling,&Yang Yang.(2021).Spatial heterogeneity of microbial community and functional groups of different cushion species in alpine scree habitat in northwestern Yunnan,China.Chinese Journal of Applied and Environmental Biology,27(5),1119-1131 1006-687X(2021)27:5<1119:YNXBBG>2.0.TX;2-8.
MLA	Xiao Zhuwei,et al."Spatial heterogeneity of microbial community and functional groups of different cushion species in alpine scree habitat in northwestern Yunnan,China".Chinese Journal of Applied and Environmental Biology 27.5(2021):1119-1131 1006-687X(2021)27:5<1119:YNXBBG>2.0.TX;2-8.