干旱区生态环境知识资源中心(Arid): 不同荒漠植物根际土壤微生物群落结构特征

Arid

	不同荒漠植物根际土壤微生物群落结构特征
其他题名	Characteristics of microbial community structure in rhizosphere soil of different desert plants
	李欣玫; 左易灵; 薛子可; 张琳琳; 赵丽莉; 贺学礼
来源期刊	生态学报
ISSN	1000-0933
出版年	2018
卷号	38 期号:8 页码:2855-2863
中文摘要	于2015年7月在甘肃安西极旱荒漠国家级自然保护区采集膜果麻黄(Ephedra przewalskii)、红砂(Reaumuria songarica)、合头草(Sympegma regelii)、泡泡刺(Nitraria sphaerocarpa)和珍珠猪毛菜(Salsola passerina)5种典型荒漠植物根际土壤样品,利用磷脂脂肪酸(PLFA)法结合Sherlock微生物鉴定系统分析了土壤微生物群落结构.结果表明,5种荒漠植物根际土壤微生物磷脂脂肪酸种类和组成差异显著,其中表征革兰氏阳性菌的18:0 iso、16:0 iso和17:1 iso omega9c分别为红砂、珍珠猪毛菜特有表征放线菌的18:1 omega7c 10-methyl仅在珍珠猪毛菜根际存在.总PLFAs、真菌、放线菌和真菌/细菌在珍珠猪毛菜中显著最高,革兰氏阳性菌、革兰氏阴性菌在膜果麻黄和珍珠猪毛菜根际显著高于其他植物,AM真菌在合头草根际有最高值.结构方程模型分析表明,与植物相比,土壤因子对微生物群落结构影响更为显著,其中易提取球囊霉素对放线菌有显著影响,土壤碱解氮是革兰氏阳性菌和革兰氏阴性菌的主要影响因子.同时,土壤微生物群落结构可用于检测不同荒漠植物根际微环境土壤退化状况.
英文摘要	To measure and manage plant growth in arid sandlands,improved understanding of the spatial patterns of desert soil resources and the role of soil microbes is required. The rhizosphere soils of Ephedra przewalskii,Reaumuria songarica, Sympegma regelii,Nitraria sphaerocarpa,and Salsola passerina in Anxi Extreme-arid Desert National Nature Reserve in Gansu Province,China were collected in July 2015. Soil microbial community structure in the rhizosphere of the studied five plants was analyzed by phospholipid fatty acid (PLFA) combined with Sherlock microbial identification system. The results showed that soil microbial PLFA species and composition in rhizosphere of five desert plants were significantly different. The characterizations of gram-positive bacteria 18:0 iso,16:0 iso and 17:1 iso omega9c were unique in rhizosphereof R. songarica and S. passerina,respectively. 18:1 omega7c 10-methyl that indicated actinomycetes only existed in the rhizosphere of S. passerina. The total PLFA,fungi,actinomycetes and fungi /bacteria were the highest under S. passerina. However,grampositive and gram-negative bacteria were significantly higher under E. przewalskii and S. passerina than under the other plants. AM fungi had the highest value under S. regelii. Structural equation model analysis indicated that compared with plants,soil factors had more significant effects on microbial community structure. Easily extracted glomalin had a significant effect on actinomycetes. Soil available nitrogen was the major influencing factor of gram-positive and gram-negative bacteria. Moreover,soil microbial community structure can be used to monitor soil degradation in rhizosphere soil of different desert plants.
中文关键词	土壤微生物群落 ; 磷脂脂肪酸(PLFA) ; 荒漠植物 ; 甘肃安西荒漠
英文关键词	soil microbial community phospholipid fatty acid (PLFA) desert plant Anxi Extreme-arid Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6232308
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238121
作者单位	河北大学生命科学学院, 保定, 河北 071002, 中国
推荐引用方式 GB/T 7714	李欣玫,左易灵,薛子可,等. 不同荒漠植物根际土壤微生物群落结构特征[J],2018,38(8):2855-2863.
APA	李欣玫,左易灵,薛子可,张琳琳,赵丽莉,&贺学礼.(2018).不同荒漠植物根际土壤微生物群落结构特征.生态学报,38(8),2855-2863.
MLA	李欣玫,et al."不同荒漠植物根际土壤微生物群落结构特征".生态学报 38.8(2018):2855-2863.