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Diversity of mycorrhizal fungi and soil indicative species in coastal plantations of northeast Brazil

Journal of Forestry Research 2021年第3期32卷 1203-1211页

作者： Olmar Baller Weber Maria Cátia Barroso da Silva Cristiane Figueira da Silva Diva Correia Deborah dos Santos Garruti Marcela Claudia Pagano Embrapa Agroindústria Tropical Rua Dra.Sara Mesquita2270PiciFortalezaCeará60511-110Brazil Centro de Ciências E Tecnologia Universidade Estadual Do CearáAv.Dr.Silas Munguba1700Campus do ItaperiFortaleza 60740-000Brazil Universidade Federal Rural Do Rio de Janeiro BR 465 Km 7 Seropédica RJSeropédicaRio de Janeiro CEP 23890-000Brazil Universidade Federal de Minas Gerais Av.Antonio Carlos6627PampulhaBelo Horizonte 31270-001Brazil

The aim of this work was to evaluate arbuscular mycorrhizal(AM)fungi as soil indicators and the mycorrhization of native and exotic tree species planted in the Acaraúbasin,a transition area from the coast to the brazilian semiarid region.Plots with 6-year-old trees of four native and three non-native species as well as one non-forested area were evaluated in terms of the diversity of AM fungi in the mycorrhizosphere and the root colonization by AM and ectomycorrhizal(EcM)fungi.Twenty-four AM fungi were identified;Claroideoglomus etunicatum,Glomus sinuosum,Paraglomus albidum,Acaulospora laevis,and Acaulospora brasiliensis were abundant in the forest soil.Diversity,dominance,evenness and richness indices of AM fungi were higher in plots with native trees.All root samples were colonized by AM fungi and only A nadenanthera colubrina,Acacia mangium,Casuarina equisetifolia and Eucalyptus urophylla formed associations with EcM fungi.Acaulospora morphotypes served as soil indicators for coverings with the native species Astronium fraxinifolium and Colubrina glandulosa.Exotic species may favor the proliferation of rarer AM fungi.These fungi–plant relationships may be important in the management of forest systems,and the evidence with mycorrhizal associations allows the inclusion of brazilian species in tropical reforestation.

关键词： Acacia mangium Arbuscular mycorrhizal fungi brazilian species Casuarina equisetifolia Ectomycorrhizal fungi Eucalyptus urophylla

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