干旱区生态环境知识资源中心(Arid): Temporal and spatial variation of arbuscular mycorrhizal fungi under the canopy of Hedysarum scoparium in the northern desert, China

Arid

DOI	10.1016/j.apsoil.2019.01.003
	Temporal and spatial variation of arbuscular mycorrhizal fungi under the canopy of Hedysarum scoparium in the northern desert, China
	Qiang, Wei; He, Xueli; Wang, Jiaojiao; Zhao, Lili
通讯作者	He, Xueli
来源期刊	APPLIED SOIL ECOLOGY
ISSN	0929-1393
EISSN	1873-0272
出版年	2019
卷号	136 页码:139-147
英文摘要	Despite the evident importance of arbuscular mycorrhizal fungi (AMF) associated with the root system of plants inhabiting desert regions, limit is known about the distribution and activity of AMF in desert ecosystems. Accordingly, AMF diversity, community composition and glomalin were investigated in the northern desert of China. Soil samples from 0 to 30 cm in depth over seven plots were collected under the canopy of Hedysarum scoparium in July of 2015 and 2016. A total of 51 molecular operational taxonomic units (OTUs) were identified by MiSeq sequencing based on small subunit (SSU) ribosomal RNA genes, and Diversispora celata and Diversispora trimurales were discovered for the first time in a desert ecosystem in China. The abundant genera included Glomus (56.4%), Diversispora (25.1%), Claroideoglomus (6.0%), Funneliforrnis (6.1%) and Paraglomus (5.5%). Archaeospora and Scutellospora sequences represented < 1.0% of total sequences. AMF community composition and diversity and two Bradford-reactive soil protein (BRSP) assays were significantly different among the seven studied plots and sampling times. Moreover, AMF diversity and richness tended to increase first and then decrease as the precipitation decreased in the barren sandy grey desert and aeolian sandy soil. Correlation coefficient analysis demonstrated that the Shannon-Wiener index was significantly and positively correlated with acid phosphatase (P < 0.05) and precipitation (P < 0.01) and was significantly and negatively correlated with soil pH (P < 0.01). The richness of AMF was significantly and positively correlated with precipitation (P < 0.01) and negatively correlated with soil organic carbon (SOC) (P < 0.05) and soil pH (P < 0.01). The BRSP fractions were also significantly and positively correlated with edaphic factors (e.g., soil moisture, soil organic carbon) and soil enzymes (e.g., soil acid and alkaline phosphatase). The means of total BRSP and easily extractable BRSP were 5.86 mg.g(-1) and 1.90 mg.g(-1), respectively. The levels of BRSP in the desert soil were slightly lower than those in native and arable soils, but the ratios of BRSP to SOC were much higher than in farmland soils. Our findings provide insights into important factors affecting the native AMF community and glomalin in the northern desert of China and suggest that AMF diversity and glomalin might be useful for monitoring desertification and soil degradation.
英文关键词	Arbuscular mycorrhizal fungi Glomalin MiSeq sequencing Hedysarum scoparium Desert ecosystem Northern China
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000458477300015
WOS关键词	SOIL PROTEIN ; GLOMALIN ; COMMUNITIES ; ECOSYSTEMS ; DYNAMICS ; DIVERSITY ; ROLES
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214270
作者单位	Hebei Univ, Coll Life Sci, 180 Wusidong Rd, Baoding 071002, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Qiang, Wei,He, Xueli,Wang, Jiaojiao,et al. Temporal and spatial variation of arbuscular mycorrhizal fungi under the canopy of Hedysarum scoparium in the northern desert, China[J],2019,136:139-147.
APA	Qiang, Wei,He, Xueli,Wang, Jiaojiao,&Zhao, Lili.(2019).Temporal and spatial variation of arbuscular mycorrhizal fungi under the canopy of Hedysarum scoparium in the northern desert, China.APPLIED SOIL ECOLOGY,136,139-147.
MLA	Qiang, Wei,et al."Temporal and spatial variation of arbuscular mycorrhizal fungi under the canopy of Hedysarum scoparium in the northern desert, China".APPLIED SOIL ECOLOGY 136(2019):139-147.