干旱区生态环境知识资源中心(Arid): Under pressure from above: Overgrazing decreases mycorrhizal colonization of both preferred and unpreferred grasses in the Patagonian steppe

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DOI	10.1016/j.funeco.2018.09.003
	Under pressure from above: Overgrazing decreases mycorrhizal colonization of both preferred and unpreferred grasses in the Patagonian steppe
	Cavagnaro, R. A.1; Pero, E.2; Dudinszky, N.3,4; Golluscio, R. A.2; Grimoldi, A. A.2
通讯作者	Grimoldi, A. A.
来源期刊	FUNGAL ECOLOGY
ISSN	1754-5048
EISSN	1878-0083
出版年	2019
卷号	40 页码:92-97
英文摘要	Arbuscular mycorrhizal fungi (AMF) are related to plant community dynamics and ecosystem functioning. Overgrazing can negatively affect plant performance, and consequently unbalance the association with AMF. We studied the grazing effect on AMF colonization for preferred (Bromus pictus and Poa ligularis) and unpreferred grasses (Pappostipa speciosa and Pappostipa humilis) by sheep in the Patagonian steppe. For each species, AMF colonization in ungrazed, moderate and intense grazing sites was quantified. In ungrazed areas, B. pictus showed the highest extent of AMF colonization. Mycorrhizal colonization was higher during the active season, and largely reduced by intense grazing conditions. The decrease of AMF colonization was maximal for the most preferred species, but also significant for the unpreferred species. Our results suggest that overgrazing could reduce mycorrhizal benefits for the plant by reduction of AMF colonization, which can be a good indicator of ecosystem functioning, eventually revealing an increasing degree of environmental degradation. (C) 2018 Elsevier Ltd and British Mycological Society. All rights reserved.
英文关键词	Arbuscular mycorrhizal fungi (AMF) Desertification Grazing intensity Symbiosis Herbivore preference Tussock grasses
类型	Article
语种	英语
国家	Argentina
收录类别	SCI-E
WOS记录号	WOS:000473841600011
WOS关键词	FUNGI ; VEGETATION ; ECOSYSTEM ; PLANTS ; ROOTS ; BIODIVERSITY ; GRASSLAND ; DIVERSITY ; GROWTH ; RANGE
WOS类目	Ecology ; Mycology
WOS研究方向	Environmental Sciences & Ecology ; Mycology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215863
作者单位	1.Univ Buenos Aires, Fac Agron, Catedra Bot Sistemat, IFEVA,CONICET, Ave San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina; 2.Univ Buenos Aires, Fac Agron, Catedra Forrajicultura, IFEVA,CONICET, Ave San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina; 3.Univ Nacl Comahue, Dept Ecol, Ctr Reg Univ Bariloche, San Carlos De Bariloche, Rio Negro, Argentina; 4.Univ Nacl Comahue, CONICET, INIBIOMA, San Carlos De Bariloche, Rio Negro, Argentina
推荐引用方式 GB/T 7714	Cavagnaro, R. A.,Pero, E.,Dudinszky, N.,et al. Under pressure from above: Overgrazing decreases mycorrhizal colonization of both preferred and unpreferred grasses in the Patagonian steppe[J],2019,40:92-97.
APA	Cavagnaro, R. A.,Pero, E.,Dudinszky, N.,Golluscio, R. A.,&Grimoldi, A. A..(2019).Under pressure from above: Overgrazing decreases mycorrhizal colonization of both preferred and unpreferred grasses in the Patagonian steppe.FUNGAL ECOLOGY,40,92-97.
MLA	Cavagnaro, R. A.,et al."Under pressure from above: Overgrazing decreases mycorrhizal colonization of both preferred and unpreferred grasses in the Patagonian steppe".FUNGAL ECOLOGY 40(2019):92-97.