干旱区生态环境知识资源中心(Arid): 西北荒漠带花棒根际丛枝菌根真菌生态地理分布

Arid

	西北荒漠带花棒根际丛枝菌根真菌生态地理分布
其他题名	Eco-geographical distribution of arbuscular mycorrhizal fungi associated with Hedysarum scoparium in the desert zone of northwestern China
	刘海跃; 李欣玫; 张琳琳; 王姣姣; 贺学礼
来源期刊	植物生态学报
ISSN	1005-264X
出版年	2018
卷号	42 期号:2 页码:252-260
中文摘要	2015年7月,沿荒漠植物花棒(Hedysarum scoparium)天然分布带,在内蒙古、宁夏、甘肃选取7个典型样地,采集花棒根际0-30 cm土层样品,研究丛枝菌根(AM)真菌群落结构变化和土壤因子的生态功能。试验基于形态特征对分离的AM真菌孢子进行分类鉴定,共分离鉴定AM真菌6属42种。群落结构分析表明不同样地的AM真菌群落结构差异显著,土壤因子对AM真菌群落有重要影响。由东到西随干旱程度加剧, AM真菌种丰度、孢子密度、Shannon-Wiener指数逐渐降低。共有种孢子密度由东向西逐渐降低,但在群落中所占比例逐渐增加。同一样地不同AM真菌种属、不同样地同一种属的AM真菌孢子密度不同。相关性分析结果显示土壤有机碳、pH值、氨态氮和有效磷对AM真菌影响显著,土壤湿度对AM真菌影响极显著。结果表明花棒根际AM真菌群落结构和物种多样性具有明显的空间异质性,并与土壤因子关系密切,其中土壤湿度对AM真菌生态分布的影响最明显。
英文摘要	Aims To understand the ecological significance of arbuscular mycorrhizal (AM)fungi associated with Hedysarum scoparium in semi-arid and arid lands, species diversity and ecological distribution of AM fungi associated with Hedysarum scoparium were elucidated in a desert ecosystem of northwestern China. Methods Soil samples (0-30 cm depth)under Hedysarum scopariumis were collected at seven different sites (Ordos, Wuhai, Dengkou, Alxa, Shapotou, Minqin, Anxi)in northwest China in July 2015. Based on the morphological characteristics of spores, AM fungi were identified, and redundancy analysis (RDA)was used to distinguish among different groups. Furthermore, the relationship between species diversity of AM fungi and soil factors were evaluated by Pearson’s correlation analysis. Important findings A total of 42 AM fungal species belonging to six genera were isolated. Among these, 16 species belong to Glomus, 17 to Acaulospora, four to Claroideoglomus, two to Septoglomus, two to Funneliformis and one to Scutellospora. The abundance, spore density and Shannon-Wiener index of AM fungi decreased gradually along the aridity gradient from east to west. Spore density of AM fungi of different species in the same site were different, and those of the same species in different sites were also different. Soil organic matter, pH, ammonia, and available phosphorus had significant effects on AM fungi. The results showed that the species diversity and distribution of AM fungi have obvious spatial patterns, and were influenced by soil factors, among which soil moisture was the most significant factor.
中文关键词	丛枝菌根真菌 ; 物种多样性 ; 空间分布 ; 花棒 ; 西北荒漠
英文关键词	arbuscular mycorrhizae fungi species diversity spatial distribution Hedysarum scoparium desert zone of northwestern China
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MICROBIOLOGY
WOS研究方向	Microbiology
CSCD记录号	CSCD:6220120
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238624
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	刘海跃,李欣玫,张琳琳,等. 西北荒漠带花棒根际丛枝菌根真菌生态地理分布[J],2018,42(2):252-260.
APA	刘海跃,李欣玫,张琳琳,王姣姣,&贺学礼.(2018).西北荒漠带花棒根际丛枝菌根真菌生态地理分布.植物生态学报,42(2),252-260.
MLA	刘海跃,et al."西北荒漠带花棒根际丛枝菌根真菌生态地理分布".植物生态学报 42.2(2018):252-260.