Effects of mowing on fungal endophytes and arbuscular mycorrhizal fungi in subalpine grasslands

被引：34

作者：

Binet, M. N. ^{[1
]}

Sage, L. ^{[2
]}

Malan, C. ^{[2
]}

Clement, J. C. ^{[2
]}

Redecker, D. ^{[1
]}

Wipf, D. ^{[1
]}

Geremia, R. A. ^{[2
]}

Lavorel, S. ^{[2
]}

Mouhamadou, B. ^{[2
]}

机构：

[1] Univ Bourgogne, UMR Agroecol INRA AgroSup 1347, Pole Interact Plantes Microorganismes ERL CNRS 63, F-21065 Dijon, France

[2] Univ Grenoble 1, UMR UJF CNRS 5553, Lab Ecol Alpine, F-38041 Grenoble 9, France

来源：

FUNGAL ECOLOGY | 2013年 / 6卷 / 04期

关键词：

Arbuscular mycorrhizal fungi; Endophyte fungi; Festuca paniculata; Grassland management; Vegetation dynamics; FESCUE FESTUCA-ARUNDINACEA; PLANT DIVERSITY; NEOTYPHODIUM; ALKALOIDS; NITROGEN; CONSEQUENCES; COLONIZATION; PRODUCTIVITY; COMPETITION; INFECTION;

D O I：

10.1016/j.funeco.2013.04.001

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

In French subalpine grasslands, cessation of mowing promotes dominance of Festuca paniculata, which alters plant diversity and ecosystem functioning. One of the mechanisms underpinning such effects may be linked to simultaneous changes in the abundance of fungal symbionts such as endophytes and arbuscular mycorrhizal fungi. In field conditions, mowing reduced the abundance of the endophyte Neotyphodium sp. in leaves of F. paniculata by a factor of 6, and increased mycorrhizal densities by a factor of 15 in the soil. In greenhouse experiments, the mycorrhizal colonization of Trifolium pratense and Allium porrum increased 3- fold and 3.8- fold respectively in mown vs unmown grassland soil. Significantly reduced growth of the two host plants was also observed on soil from the unmown grassland. Such opposite effects of mowing on the two functional groups of fungal symbionts could suggest interactions between these two groups, which in turn could contribute to structuring plant communities in subalpine grasslands. (c) 2013 Elsevier Ltd and The British Mycological Society. All rights reserved.

引用

页码：248 / 255

页数：8

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