Mycorrhiza Networks Promote Biodiversity and Stabilize the Tropical Mountain Rain Forest Ecosystem: Perspectives for Understanding Complex Communities

Kottke, Ingrid; Setaro, Sabrina; Haug, Ingeborg; Herrera, Paulo; Cruz, Darío; Fries, Andreas; Gawlik, Julia; Homeier, Jürgen; Werner, Florian; Gerique, Andrés; Suárez, Juan Pablo

doi:10.1007/978-3-642-38137-9_14

Cited by 24 publications

(14 citation statements)

References 57 publications

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“…Kottke et al (2010) showed that three Atractiellales genotypes, closely related to Infundibura, formed mycorrhizas with many terrestrial and epiphytic orchid species in the Andean tropical forest and regenerating habitats. Similar broad sharing was found for Tulasnella and Seredipita genotypes from the same area (Kottke et al 2013).…”

Section: Orchid-mycobiont Interaction With Different Levels Of Specifsupporting

confidence: 59%

“…The autotrophic terrestrial and epiphytic orchids in the tropical mountain rain forest were found associated with a limited range of Basidiomycota in the Serendipitaceae (Sebacinales), Tulasnellaceae and Ceratobasidiaceae (Cantharellales), and Atractiellomycetes (Atractiellales) (Kottke et al 2010(Kottke et al , 2013Otero et al 2002;Otero et al 2007;Suárez et al 2006Suárez et al , 2008Suárez et al , 2016. Tulasnellaceae were the most species rich and most abundant group.…”

Section: Introductionmentioning

confidence: 99%

“…Species richness, environmental conditions but also sampling efforts and methods of fungal identification may still bias a clear statement on narrow specificity in the wet tropical habitat. More likely, sharing of mycobionts will improve the rate of successful germination of orchid seeds and also promote co-existence of closely related species as observed in the tropical montane rain forest (Kottke et al 2013 …”

Section: Orchid-mycobiont Interaction With Different Levels Of Specifmentioning

confidence: 99%

“…Thus, knowledge on identity of fungal mycobionts and degree of specificity in symbioses is of interest to understand life history and distribution of orchids and a precondition for conservation efforts in such diverse places like the mountain forests of Ecuador where orchids, with approximately 4000 species, constitute about 25% of native vascular plants (Dodson 2005;Neill 2012). Comprehensive molecular studies on the mycobionts of terrestrial and epiphytic orchids were therefore carried out in the tropical mountain forest of Southern Ecuador (Kottke et al 2010(Kottke et al , 2013Riofrío et al 2013;Suárez et al 2006;Suárez et al 2008;Suárez et al 2016). Results are summarized here and recent molecular phylogenetic and physiological data of the respective fungal groups are compiled to discuss the findings.…”

Section: Introductionmentioning

confidence: 99%

“…It was shown that success of seedling establishment is affected by occurrence of mature plants, despite the easy far-distance transport of orchid seeds (Jacquemyn et al 2007;Jersákovà & Malinová 2007;Riofrío et al 2013). It is under current debate if orchid species depend on specific mycobionts or can equally or better be promoted by a broad spectrum of fungi (Kartzinel et al 2013;Kottke et al 2013;McCormick & Jacquemyn 2014). Narrow, specific association might be more efficient (Kiers et al 2011) and favor propagation of the respective plant and mycobiont against competing species, while a broader mutualistic interaction might be safer in long term survival and distribution.…”

Section: Introductionmentioning

confidence: 99%

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Main fungal partners and different levels of specificity of orchid mycorrhizae in the tropical mountain forests of Ecuador

Suárez

Kottke

2016

Lankesteriana

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abStract. Orchids are a main component of the diversity of vascular plants in Ecuador with approximately 4000 species representing about 5.3% of the orchid species described worldwide. More than a third of these species are endemics. As orchids, in contrast to other plants, depend on mycorrhizal fungi already for seed germination and early seedling establishment, availability of appropriate fungi may strongly influence distribution of orchid populations. It is currently debated if green orchids depend on specific mycobionts or may be equally promoted by a broad spectrum of mycorrhizal fungi, discussion mostly based on data from temperate regions. Here we summarize results obtained from broad scale investigations in the tropical mountain rain forest of Ecuador revealing associations with members of Serendipitaceae (Sebacinales), Tulasnellaceae, Ceratobasidiaceae (Cantharellales), and Atractiellales. Recent molecular data show that these worldwide spread fungal groups have broad ecological implications and are specifically suited as mycorrhizal fungi of green orchids. We found that main fungal partners and different levels of specificity among orchids and their mycobionts in the tropical mountain forests correspond to findings in other biomes despite the large ecological differences.

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Section: Orchid-mycobiont Interaction With Different Levels Of Specifsupporting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Section: Orchid-mycobiont Interaction With Different Levels Of Specifmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Main fungal partners and different levels of specificity of orchid mycorrhizae in the tropical mountain forests of Ecuador

Suárez

Kottke

2016

Lankesteriana

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Biodiversitätsforschung – wohin geht die Reise?

Beck¹

2015

Biologie in unserer Zeit

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Globally Distributed Arbuscular Mycorrhizal Fungi Associated With Invasive Cinchona pubescens on Santa Cruz Island, Galápagos

Herrera,

Haug,

Suárez

et al. 2024

Ecology and Evolution

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The presence of arbuscular mycorrhizal fungi (AMF) is essential for the survival and establishment of most plant species in nature. The reproductive success of invasive plant species in a particular habitat could also depend on these AM fungi. Cinchona pubescens, commonly known as quinine, is highly invasive on Santa Cruz Island, Galápagos, but at the same time severely endangered in its native range on mainland Ecuador due to overexploitation in the past. In this study, we aim at determining the AMF communities associated with C. pubescens at both locations to investigate whether the successful invasion of C. pubescens on Santa Cruz is related to its association with a particular community of AMF. For this, roots of C. pubescens trees were sampled at three sites, one site on Santa Cruz and two sites in the province of Loja, on mainland Ecuador. Communities of AM fungi were determined through the molecular cloning and sequencing of the 18S nrDNA gene and through the delimitation of Operational Taxonomic Units (OTUs), associated with the plant roots. We found 36 AMF OTUs associated with C. pubescens, most of them belonging to the genus Glomus. The highest richness of AMF OTUs was detected in samples from sites located on mainland Ecuador. The AMF communities between Santa Cruz and mainland Ecuador were significantly different, and only five OTUs were shared between both locations. Two dominant OTUs in C. pubescens from Santa Cruz were detected but no dominant OTUs from mainland Ecuador. Almost two thirds of the OTUs associated with C. pubescens had a wide global distribution. Our results suggest that the successful invasion of C. pubescens on Santa Cruz could have been facilitated by local generalist AMF and not by particular AMF. The observed generalist AMF from both locations could be important for conservation plans of restoring the endangered C. pubescens in the native forests on mainland Ecuador.

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Mycorrhiza Networks Promote Biodiversity and Stabilize the Tropical Mountain Rain Forest Ecosystem: Perspectives for Understanding Complex Communities

Cited by 24 publications

References 57 publications

Main fungal partners and different levels of specificity of orchid mycorrhizae in the tropical mountain forests of Ecuador

Main fungal partners and different levels of specificity of orchid mycorrhizae in the tropical mountain forests of Ecuador

Biodiversitätsforschung – wohin geht die Reise?

Globally Distributed Arbuscular Mycorrhizal Fungi Associated With Invasive Cinchona pubescens on Santa Cruz Island, Galápagos

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