Late-stage or later-successional ectomycorrhizal fungi,dominant ectomycorrhizal species in mature forest,are generally important symbiotic partners of dominant tree species in many forest ecosystems.Spatial patterns o...Late-stage or later-successional ectomycorrhizal fungi,dominant ectomycorrhizal species in mature forest,are generally important symbiotic partners of dominant tree species in many forest ecosystems.Spatial patterns of fungal sporocarps of three families,i.e.Amanitaceae,Boletaceae and Russulaceae,in a subtropical forest in Dujiangyan were examined using second-order analysis in the present paper.The woody plant compositions of the plots associated with ectomycorrhizal fungi of three families were also compared using binary logistic regression analysis.Results indicated that presences of non-ectomycorrhizal and some ectomycorrhizal plants might have negative effects on the occurrence of ectomyconrhizas(ECM)fungal sporocarps and the characteristics in clonal growth of fungal taxa would not be the only determinant in the spatial pattern of ECM fungi.We suggest that besides host plants,non-ectomycorrhizal woody plants and interaction of ECM fungi should also be considered in spatial studies of ECM fungal communities in natural forests.展开更多
Although Sikkim belongs to one of the Global Biodiversity Hotspots,little is known about its ectomycorrhizal fungi,and even less about the main genera of Russulales,i.e.Lactarius,Lactifluus,Multifurca and Russula.Comb...Although Sikkim belongs to one of the Global Biodiversity Hotspots,little is known about its ectomycorrhizal fungi,and even less about the main genera of Russulales,i.e.Lactarius,Lactifluus,Multifurca and Russula.Combining a multilocus genealogical and morphological study,we aimed to document the diversity within Lactifluus volemus sensu lato of Sikkim Himalaya.We compared nuclear ITS and LSU rDNA,nuclear rpb1 and rpb2 protein-coding,and mitochondrial atp6 protein-coding genealogies to determine species boundaries.Interspecific relationships were inferred from the combined dataset.Bayesian and maximum likelihood single-locus genealogies are concordant and support recognition of six species.Three of these could be identified by unique morphological characteristics and are described as new species:L.dissitus,L.leptomerus and L.versiformis.展开更多
文摘Late-stage or later-successional ectomycorrhizal fungi,dominant ectomycorrhizal species in mature forest,are generally important symbiotic partners of dominant tree species in many forest ecosystems.Spatial patterns of fungal sporocarps of three families,i.e.Amanitaceae,Boletaceae and Russulaceae,in a subtropical forest in Dujiangyan were examined using second-order analysis in the present paper.The woody plant compositions of the plots associated with ectomycorrhizal fungi of three families were also compared using binary logistic regression analysis.Results indicated that presences of non-ectomycorrhizal and some ectomycorrhizal plants might have negative effects on the occurrence of ectomyconrhizas(ECM)fungal sporocarps and the characteristics in clonal growth of fungal taxa would not be the only determinant in the spatial pattern of ECM fungi.We suggest that besides host plants,non-ectomycorrhizal woody plants and interaction of ECM fungi should also be considered in spatial studies of ECM fungal communities in natural forests.
基金supported by the“Bijzonder Onderzoeksfonds Ghent University”(BOF)supported by the Research Foundation Flanders(FWO).
文摘Although Sikkim belongs to one of the Global Biodiversity Hotspots,little is known about its ectomycorrhizal fungi,and even less about the main genera of Russulales,i.e.Lactarius,Lactifluus,Multifurca and Russula.Combining a multilocus genealogical and morphological study,we aimed to document the diversity within Lactifluus volemus sensu lato of Sikkim Himalaya.We compared nuclear ITS and LSU rDNA,nuclear rpb1 and rpb2 protein-coding,and mitochondrial atp6 protein-coding genealogies to determine species boundaries.Interspecific relationships were inferred from the combined dataset.Bayesian and maximum likelihood single-locus genealogies are concordant and support recognition of six species.Three of these could be identified by unique morphological characteristics and are described as new species:L.dissitus,L.leptomerus and L.versiformis.
