Distinct sporulation dynamics of arbuscular mycorrhizal fungal communities from different agroecosystems in long-term microcosms
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
ID 102956
Author(s) Oehl, Fritz; Sieverding, Ewald; Ineichen, Kurt; Maeder, Paul; Wiemken, Andres; Boller, Thomas
Author(s) at UniBasel Boller, Thomas
Ineichen, Kurt
Wiemken, Andres M.
Year 2009
Title Distinct sporulation dynamics of arbuscular mycorrhizal fungal communities from different agroecosystems in long-term microcosms
Journal Agriculture, ecosystems and environment
Volume 134
Number 3-4
Pages / Article-Number 257-268
Keywords Arbuscular mycorrhiza, Community structure, Biodiversity, Life cycle, Life history strategies, Organic agriculture, Soil quality, Soil function

The aim of this study was to investigate sporulation dynamics of arbuscular mycorrhizal fungal (AMF) communities from agroecosystems differing in land use intensity in long-term experimental microcosms. These were set up with characteristic grassland plants (Lolium perenne, Trifolium pratense, Plantago lanceolata), and inoculated with soils from several grasslands and arable lands subjected to crop rotation or continuous monocropping. The microcosms were maintained under ambient light and temperature conditions over 3 years. A novel, localized sampling scheme was applied for attaining exclusively the newly formed spores at bimonthly intervals. Overall, 39 AMF species were detected by morphological spore identification. Some species were recovered from all sites, others exclusively from arable lands, or grasslands, or from all sites except under maize monocropping. Clear seasonal and successional AMF sporulation dynamics were revealed, implying different life strategies of different AMF species. A first group of Glomus spp., including G. mosseae, sporulated rapidly during the first season. A second group, including G. constrictum and G. fasciculatum, sporulated late in the first season and replaced the first group during subsequent seasons. A large third group, including G. invermaium, G. macrocarpum and G. sinuosum, sporulated much later, in the second or third season. Acaulospora, Archaeospora and Ambispora spp. sporulated mainly during spring and early summer, Scutellospora and Cetraspora spp. only in fall. While in the microcosms derived from arable lands, cumulative species numbers did not increase anymore after 2 years, the numbers still increased significantly in the microcosms from the grasslands indicating longer lasting periods of sporulation cycles. Remarkably, the arable land under organic farming produced the highest AMF species richness, even higher than the grasslands. In conclusion, AMF communities from distinct agro-ecosystems differed in species composition and seasonal and successional sporulation dynamics. (C) 2009 Elsevier B.V. All rights reserved.

Publisher Elsevier
ISSN/ISBN 0167-8809
URL http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T3Y-4X36TJC-1&_user=10&_coverDate=12%2F31%2F2009&_rdoc=15&_fmt=high&_orig=browse&_srch=doc-info%28%23toc%234959%232009%23998659996%231502092%23FLA%23display%23Volume%29&_cdi=4959&_sort=d&_docanchor=&_ct=18&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=58b02382f4499633a3ae0510def140be
edoc-URL http://edoc.unibas.ch/dok/A5252885
Full Text on edoc No
Digital Object Identifier DOI 10.1016/j.agee.2009.07.008
ISI-Number WOS:000271079300014
Document type (ISI) Article

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