Dispersion, an Important Radiation Mechanism for Ectomycorrhizal Fungi in Neotropical Lowland Forests?

Moyersoen, Bernard

doi:10.5772/33217

Cited by 13 publications

(14 citation statements)

References 58 publications

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“…(Nyctaginaceae). Fungal dispersion and host sharing seem to be essential for ECM communities associated with Pakaraimaea dipterocarpacea (Moyersoen 2012). In ECMs, including Sebacinales, of wooded savannas and rain forests of Continental Africa and Madagascar, Tedersoo et al (2011) found low levels of host preferences and communities little structured by soil parameters.…”

Section: Sebacinalean Ectomycorrhizae (Ecm)mentioning

confidence: 99%

Enigmatic Sebacinales

Oberwinkler¹,

Riess²,

Bauer³

et al. 2013

Mycol Progress

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A historical retrospect and a taxonomic update will deal with Sebacina s.l. and s.str., Craterocolla, Efibulobasidium, Serendipita, Trem ell odendron, Trem ell oscypha, Tremellostereum, and Piriformospora, the Sebacinaceae, and the Sebacinales. Phylogenetic hypotheses for the order and subordinal taxa are discussed, including environmental sequence taxa. The cryptic biodiversity in Sebacinales is extensive but mostly unresolved with respect to the species involved.

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Section: Sebacinalean Ectomycorrhizae (Ecm)mentioning

confidence: 99%

Enigmatic Sebacinales

Oberwinkler¹,

Riess²,

Bauer³

et al. 2013

Mycol Progress

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“…). On the other hand, dispersion and isolation is mentioned as a key driver of speciation for EM taxa that have colonized the Roraima region and especially the Guiana Highlands (Moyersoen ). The same pattern of endemism is expected on white‐sand areas that are often isolated (Prance ), and specimens from these places need to be compared not only between such sites but also with specimens from the Guiana Highlands and dunes in Brazil.…”

Section: Discussionmentioning

confidence: 99%

“…Although several plant-related studies refer to Singer and Ara ujo's results (1979), recent studies investigating global patterns of EM fungi diversity (treated as species richness) omitted Amazonian white-sand ecosystems, and only included data from EM sampling of highly specialized monodominant Dicymbe (Fabaceae: Caesalpinioideae) forest in Guyana (Janzen 1974, Henkel et al 2002, 2012, Henkel 2003, Smith et al 2011 and Nothofagus forests in Argentina as representative of the Neotropics (Tedersoo et al 2012). That said, Tedersoo and Smith (2013) recognized that EM associations in the tropics remain understudied, and numerous observations on roots have revealed puzzling plantfungi associations in the Neotropics, such as 'cicatrizing' ectomycorrhiza described by Singer and Aguiar (1986), the occurrence of Basidiomycota mycelium on roots in the Mata Atlântica (Andrade et al 2000), or unidentified structures on tree roots in French Guiana (B ereau & Garbaye 1994(B ereau & Garbaye , B ereau et al 1997.…”

mentioning

confidence: 99%

“…Although studies of EM associations in Neotropical lowlands have been comparatively meager, they provide evidence that EM communities exhibit low diversity (Haug et al 2005, Tedersoo et al 2010b, and that EM fruiting bodies are not restricted to Amazonian white sands. In the Guyana sandstone highlands, ongoing long-term surveys have unraveled the diversity of EM fruiting bodies associated with Dicymbe corymbosa, D. altsonii, and D. jenmanii (Fabaceae: Caesalpinioideae), Aldina insignis (Fabaceae: Papilionoideae), and Pakaraimaea dipterocarpacea (Dipterocarpaceae), which locally dominate the forest (Janzen 1974, Henkel et al 2002, 2012, Henkel 2003, Smith et al 2011. To date, researchers have found 174 EM species across 17 families and 31 genera (Henkel et al 2012; list available at http://tropicalfungi.org/wp-content/uploads/UPDATED-Total-Taxa-List-4-11-13.pdf).…”

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confidence: 99%

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Diversity and Distribution of Ectomycorrhizal Fungi from Amazonian Lowland White‐sand Forests in Brazil and French Guiana

et al. 2016

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International audienceWhite-sand forests are thought to host many ectomycorrhizal fungi, as demonstrated by the numerous fruiting body collections made by Rolf Singer in the lower Rio Negro in the late 1970s. Despite recognition of the importance of ectomycorrhizal fungi in white-sand forests, there has not yet been a systematic examination of diversity and taxonomic composition across white-sand forests, or more widely across lowland Amazonian forests. In an effort to broaden our view of ectomycorrhizal fungal diversity and distribution on white-sand forests, we collected ectomycorrhizal fruiting bodies in 10 plots of white-sand forests in Brazil and French Guiana between 2012 and 2014. We collected 221 specimens and 62 morphospecies, from the 10 plots, confirming that all studied white-sand forests host ectomycorrhizal fungi. Additionally, we searched for taxa associated with white sands among specimens deposited in Brazilian herbaria. We report 1006 unique ectomycorrhizal specimen records in 18 Brazilian herbaria, of which 137 specimens and 64 species are reported from white-sand forests, mainly in the state of Amazonas, Brazil. Russulaceae and Amanitaceae were frequent in all habitats, and Cortinarius were more frequent on white sands. Our results highlight the high diversity and heterogeneity of ectomycorrhizal communities on white-sand forests, and the wide distribution of ectomycorrhizal fungi throughout Brazil, irrespective of soil type.Florestas em solos arenosos são consideradas como hospedeiras de muitos fungos ectomicorrízicos (EM), como demonstrado pelas numerosas coletas feitas por Rolf Singer na região do Rio Negro, Amazonas, no final dos anos 70. Apesar do reconhecimento da importância dos fungos ectomicorrízicos em florestas em solos arenosos, não houve nenhum estudo sistemático da diversidade e da composição taxonômica nas florestas em solos arenosos ou mesmo mais amplamente nas terras baixas da Floresta Amazônica. Para ter uma visão global da diversidade e da distribuição de fungos EM em florestas em solos arenosos, foram coletados basidiomas desses fungos em 10 parcelas de florestas em solos arenosos no Brasil e na Guiana Francesa entre 2012 e 2014. Além disso, uma busca foi feita por espécimes depositados em herbários brasileiros que tinham a informação de serem coletas feitas em solo arenoso. Nas 10 parcelas amostradas foram coletados 221 espécimes e 62 morfoespécies, o que confirma que todas as florestas em solos arenosos hospedam fungos EM. Recuperamos 1006 espécimes registrados em 18 herbários brasileiros, dos quais 137 espécimes e 52 espécies são registros de florestas em solos arenosos principalmente no estado do Amazonas, Brasil. Russulaceae e Amanitaceae foram frequentes em todos os habitats e Cortinarius foi o táxon mais frequente em solo arenoso. Os resultados apresentados enfatizam a alta diversidade e heterogeneidade das comunidades de EM em florestas em solos arenosos, assim como a ampla distribuição de fungos em todo o Brasil, não exclusivamente em florestas em solos arenosos

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“…Aldina heterophylla Spruce ex Benth (Fabaceae) is a woody shrub or tree belonging to the subfamily Papilionoideae, tribe Swartziaeae, which shows no evidence of root nodules or nitrogen fixation but can show arbuscular mycorrhizas [20] [21]. It usually has compound leaves (varying from two to five leaflets, most commonly found with three) or may be unifoliate, such as in the CP [20] [22].…”

Section: The Study Speciesmentioning

confidence: 99%

Leaf Gas Exchange, Photon Capture and Light Harvest in Aldina heterophylla along a Vegetation Gradient in the Amazon Rainforest

Rodrigues¹,

Gonçalves²

2014

AJPS

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Adaptation along environmental gradients is presumed to induce physiological and biochemical leaf changes in plant species. In this paper, we report how leaf gas exchange, photon capture and light harvest for photosynthesis in Aldina heterophylla change along a vegetation gradient from low stature open vegetation on extremely nutrient-poor white sand (Campina, CP), through intermediate closet type (Campinarana, CR) to tall closed rain forest (RF). The pigment concentrations did not differ between the CP, CR and RF habitats. The performance index for the photosynthesis (PIABS) of individuals in RF and CP was approximately 30% higher than that in CR individuals. This species showed similar potential rates of photosynthesis in the different vegetation types; however, the dark respiration rates were higher in CP. Our results indicate that the differences in the leaves and soil nitrogen concentrations are not enough to change the levels of gas exchange. Other environmental features may be driving the observed morphological features in this gradient, in particular, the tree height.

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Dispersion, an Important Radiation Mechanism for Ectomycorrhizal Fungi in Neotropical Lowland Forests?

Cited by 13 publications

References 58 publications

Enigmatic Sebacinales

Enigmatic Sebacinales

Diversity and Distribution of Ectomycorrhizal Fungi from Amazonian Lowland White‐sand Forests in Brazil and French Guiana

Leaf Gas Exchange, Photon Capture and Light Harvest in Aldina heterophylla along a Vegetation Gradient in the Amazon Rainforest

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