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Leroy C, Maes AQ, Louisanna E, Séjalon‐Delmas N, Erktan A, Schimann H. Ontogenetic changes in root traits and root‐associated fungal community composition in a heteroblastic epiphytic bromeliad. OIKOS 2022. [DOI: 10.1111/oik.09213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Céline Leroy
- AMAP, Univ. Montpellier, CIRAD, CNRS, INRAE, IRD Montpellier France
- UMR ECOFOG, CIRAD, CNRS, INRAE, AgroParisTech, Univ. de Guyane, Univ. des Antilles Kourou France
| | - Arthur QuyManh Maes
- Laboratoire de Recherche en Sciences Végétales, Univ. de Toulouse, CNRS, UPS, Toulouse INP Auzeville‐Tolosane France
| | - Eliane Louisanna
- UMR ECOFOG, CIRAD, CNRS, INRAE, AgroParisTech, Univ. de Guyane, Univ. des Antilles Kourou France
| | - Nathalie Séjalon‐Delmas
- Laboratoire de Recherche en Sciences Végétales, Univ. de Toulouse, CNRS, UPS, Toulouse INP Auzeville‐Tolosane France
| | - Amandine Erktan
- J.F. Blumenbach Inst. of Zoology and Anthropology, Univ. of Göttingen Göttingen Germany
- Eco&Sols, Univ. Montpellier, IRD, INRAE, CIRAD, Inst. Agro Montpellier France
| | - Heidy Schimann
- UMR ECOFOG, CIRAD, CNRS, INRAE, AgroParisTech, Univ. de Guyane, Univ. des Antilles Kourou France
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Leroy C, Maes AQ, Louisanna E, Carrias J, Céréghino R, Corbara B, Séjalon‐Delmas N. Ants mediate community composition of root‐associated fungi in an ant‐plant mutualism. Biotropica 2022. [DOI: 10.1111/btp.13079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Céline Leroy
- AMAP Univ Montpellier, CIRAD, CNRS, INRAE, IRD Montpellier France
- ECOFOG, AgroParisTech, CIRAD, CNRS, INRAE, Université de Guyane Université des Antilles Kourou France
| | | | - Eliane Louisanna
- ECOFOG, AgroParisTech, CIRAD, CNRS, INRAE, Université de Guyane Université des Antilles Kourou France
| | | | - Régis Céréghino
- Laboratoire Écologie Fonctionnelle et Environnement, CNRS Université Paul Sabatier Toulouse 3 Toulouse France
| | - Bruno Corbara
- LMGE, CNRS Université Clermont Auvergne Clermont‐Ferrand France
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Aguilar‐Cruz Y, García‐Franco JG, Zotz G. Litter‐trapping tank bromeliads in five different forests: Carbon and nutrient pools and fluxes. Biotropica 2021. [DOI: 10.1111/btp.13048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yonatan Aguilar‐Cruz
- Institut für Biologie und Umweltwissenschaften Carl von Ossietzky Universität Oldenburg Oldenburg Germany
| | | | - Gerhard Zotz
- Institut für Biologie und Umweltwissenschaften Carl von Ossietzky Universität Oldenburg Oldenburg Germany
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Leroy C, Maes AQ, Louisanna E, Schimann H, Séjalon-Delmas N. Taxonomic, phylogenetic and functional diversity of root-associated fungi in bromeliads: effects of host identity, life forms and nutritional modes. THE NEW PHYTOLOGIST 2021; 231:1195-1209. [PMID: 33605460 DOI: 10.1111/nph.17288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
Bromeliads represent a major component of neotropical forests and encompass a considerable diversity of life forms and nutritional modes. Bromeliads explore highly stressful habitats and root-associated fungi may play a crucial role in this, but the driving factors and variations in root-associated fungi remain largely unknown. We explored root-associated fungal communities in 17 bromeliad species and their variations linked to host identity, life forms and nutritional modes by using ITS1 gene-based high-throughput sequencing and by characterizing fungal functional guilds. We found a dual association of mycorrhizal and nonmycorrhizal fungi. The different species, life forms and nutritional modes among bromeliad hosts had fungal communities that differ in their taxonomic and functional composition. Specifically, roots of epiphytic bromeliads had more endophytic fungi and dark septate endophytes and fewer mycorrhizal fungi than terrestrial bromeliads and lithophytes. Our results contribute to a fundamental knowledge base on different fungal groups in previously undescribed Bromeliaceae. The diverse root-associated fungal communities in bromeliads may enhance plant fitness in both stressful and nutrient-poor environments and may give more flexibility to the plants to adapt to changing environmental conditions.
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Affiliation(s)
- Céline Leroy
- AMAP, CIRAD, CNRS, INRAE, IRD, Univ Montpellier, Montpellier, 34000, France
- UMR EcoFoG, CNRS, CIRAD, AgroParisTech, INRAE, Université des Antilles, Université de Guyane, Kourou, 97310, France
| | | | - Eliane Louisanna
- UMR EcoFoG, CNRS, CIRAD, AgroParisTech, INRAE, Université des Antilles, Université de Guyane, Kourou, 97310, France
| | - Heidy Schimann
- UMR EcoFoG, CNRS, CIRAD, AgroParisTech, INRAE, Université des Antilles, Université de Guyane, Kourou, 97310, France
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Nilsen AR, Teasdale SE, Guy PL, Summerfield TC, Orlovich DA. Fungal diversity in canopy soil of silver beech, Nothofagus menziesii (Nothofagaceae). PLoS One 2020; 15:e0227860. [PMID: 31978185 PMCID: PMC6980614 DOI: 10.1371/journal.pone.0227860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 01/01/2020] [Indexed: 01/16/2023] Open
Abstract
Adventitious roots in canopy soils associated with silver beech (Nothofagus menziesii Hook.f. (Nothofagaceae)) form ectomycorrhizal associations. We investigated the extent to which canopy ectomycorrhizal communities contribute to overall diversity of ectomycorrhizal fungi associated with silver beech. Hyphal ingrowth bags were buried for 12 months in canopy and terrestrial soils of five trees at one site. We used amplicon sequencing of the nuclear ribosomal internal transcribed spacer 2 region (ITS2) to assess diversity of both ectomycorrhizal and non-ectomycorrhizal OTUs in hyphal ingrowth bags. There was a significant difference in ectomycorrhizal fungal community diversity between the terrestrial and canopy hyphal ingrowth bag communities. Ectomycorrhizal community composition of the terrestrial and canopy environments was also significantly different. Some ectomycorrhizal taxa were significantly differentially represented in either the terrestrial or canopy environment. The hyphal ingrowth bags also accumulated non-ectomycorrhizal species. The non-ectomycorrhizal fungi also had significantly different diversity and community composition between the canopy and terrestrial environments. Like the ectomycorrhizal community, some non-ectomycorrhizal taxa were significantly differentially represented in either the terrestrial or canopy environment. The canopy soil microhabitat provides a novel environment for growth of ectomycorrhizal adventitious roots and enables the spatial partitioning of ectomycorrhizal and non-ectomycorrhizal fungal diversity in the forest.
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Affiliation(s)
- Andy R. Nilsen
- Department of Botany, University of Otago, Dunedin, New Zealand
| | | | - Paul L. Guy
- Department of Botany, University of Otago, Dunedin, New Zealand
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Bird's nest fern epiphytes facilitate herpetofaunal arboreality and climate refuge in two paleotropic canopies. Oecologia 2019; 192:297-309. [PMID: 31823001 DOI: 10.1007/s00442-019-04570-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 11/26/2019] [Indexed: 10/25/2022]
Abstract
In tropical forests, epiphytes increase habitat complexity and provision services rare to canopy environments, such as water retention, nutrient cycling, and microclimate refuge. These services facilitate species diversity and coexistence in terrestrial ecosystems, and while their utility in forest ecosystems is appreciated for the Bromeliaceae of the Neotropics, fewer studies have examined the role of Paleotropic epiphytes in ecological niche theory. Here, we compare herpetofaunal presence, abundance, and diversity of in bird's nest fern (Asplenium nidus complex; BNF) to other microhabitats in Madagascar and the Philippines. We measure BNF fern microclimates, examine temporal use of canopy microhabitats, and test models of fern characteristics hypothesized to predict herpetofaunal use. In both countries, one in five BNFs were occupied by herpetofauna, mostly amphibians, and species using BNFs were highly dissimilar from those in other microhabitats. Herpetofaunal presence and abundance were greater in BNFs than in other canopy microhabitats and were most commonly used during the day when fern temperatures were highly buffered. Finally, BNF area was the best predictor of herpetofaunal presence and abundance, compared to canopy cover and BNF height. Importantly, these patterns remained consistent despite the distinct phylogenetic histories of our two communities (Asian versus African). Our results suggests that BNFs and their microclimate services play a critical role in the ecology of two Paleotropic forests, and facilitate the use of canopy habitats by climate-sensitive species. However, future studies are needed to assess the consistency of BNFs' utility as a microclimate refuge across their large range.
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Leroy C, Maes AQ, Louisanna E, Séjalon-Delmas N. How significant are endophytic fungi in bromeliad seeds and seedlings? Effects on germination, survival and performance of two epiphytic plant species. FUNGAL ECOL 2019. [DOI: 10.1016/j.funeco.2019.01.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Soil Influences Colonization of Root-Associated Fungal Endophyte Communities of Maize, Wheat, and Their Progenitors. ACTA ACUST UNITED AC 2016. [DOI: 10.1155/2016/8062073] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Root-associated fungal endophytes are vital component of root microbiome as some mitigate their host’s abiotic and biotic stress. We characterized root-associated fungal endophytes in cereal grains and their progenitors grown on two different soil-types. We aimed at determining how clay and desert soil affects the colonization of root fungal community. Both culture-dependent and culture-independent methods were employed to identify endophytes that successfully colonized greenhouse-grown host plants. The Internal Transcriber Spacer region of fungal ribosomal DNA was utilized for identification purposes. This study revealed soil as a prominent factor influencing the composition of microfungal communities inhabiting the roots of maize (Zea mays subsp. mays) and its conspecific progenitor, teosinte (Zea mays subsp. parviglumis). Similar results were found in wheat (Triticum aestivum subsp. aestivum) and its progenitor (Triticum monococcum subsp. monococcum). The multidimensional comparisons of Morisita-Horn similarity values of fungal colonists of various host plant taxa indicated that soil plays a primary role in shaping the root fungal community; a secondary effect was plant host identity, even when the plant host is a conspecific. Future studies focused on characterizing root endophytes in other cereal grains, and studying the effect of edaphic factors on fungal colonization, can ultimately contribute to crop productivity.
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Ruano-Fajardo G, Rovito SM, Ladle RJ. Bromeliad selection by two salamander species in a harsh environment. PLoS One 2014; 9:e98474. [PMID: 24892414 PMCID: PMC4043640 DOI: 10.1371/journal.pone.0098474] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 05/02/2014] [Indexed: 11/19/2022] Open
Abstract
Bromeliad phytotelmata are frequently used by several Neotropical amphibian taxa, possibly due to their high humidity, microclimatic stability, and role as a refuge from predators. Indeed, the ability of phytotelmata to buffer against adverse environmental conditions may be instrumental in allowing some amphibian species to survive during periods of environmental change or to colonize sub-optimal habitats. Association between bromeliad traits and salamanders has not been studied at a fine scale, despite the intimate association of many salamander species with bromeliads. Here, we identify microhabitat characteristics of epiphytic bromeliads used by two species of the Bolitoglossa morio group (B. morio and B. pacaya) in forest disturbed by volcanic activity in Guatemala. Specifically, we measured multiple variables for bromeliads (height and position in tree, phytotelma water temperature and pH, canopy cover, phytotelma size, leaf size, and tree diameter at breast height), as well as salamander size. We employed a DNA barcoding approach to identify salamanders. We found that B. morio and B. pacaya occurred in microsympatry in bromeliads and that phytotelmata size and temperature of bromeliad microhabitat were the most important factors associated with the presence of salamanders. Moreover, phytotelmata with higher pH contained larger salamanders, suggesting that larger salamanders or aggregated individuals might modify pH. These results show that bromeliad selection is nonrandom with respect to microhabitat characteristics, and provide insight into the relationship between salamanders and this unique arboreal environment.
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Affiliation(s)
- Gustavo Ruano-Fajardo
- Museo de Historia Natural, Escuela de Biología, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Ciudad de Guatemala, Guatemala
- Sector Diversidade Biológica e Conservação nos Trópicos, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió, Alagoas, Brazil
- * E-mail:
| | - Sean M. Rovito
- Museum of Vertebrate Zoology, University of California, Berkeley, California, United States of America
| | - Richard J. Ladle
- Sector Diversidade Biológica e Conservação nos Trópicos, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió, Alagoas, Brazil
- School of Geography and the Environment, Oxford University, Oxford, United Kingdom
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Orlovich DA, Draffin SJ, Daly RA, Stephenson SL. Piracy in the high trees: ectomycorrhizal fungi from an aerial 'canopy soil' microhabitat. Mycologia 2012; 105:52-60. [PMID: 22778170 DOI: 10.3852/11-307] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The mantle of dead organic material ("canopy soil") associated with the mats of vascular and nonvascular epiphytes found on the branches of trees in the temperate rainforests along the southwestern coast of the South Island of New Zealand were examined for evidence of ectomycorrhizal fungi. DNA sequencing and cluster analysis were used to identify the taxa of fungi present in 74 root tips collected from the canopy soil microhabitat of three old growth Nothofagus menziesii trees in the South West New Zealand World Heritage Area. A diverse assemblage of ectomycorrhizal fungi was found to infect an extensive network of adventitious canopy roots of Nothofagus menziesii in this forest, including 14 phylotypes from nine genera of putative ectomycorrhizal fungi. Seven of the genera identified previously were known to form ectomycorrhizas with terrestrial roots of Nothofagus: Cortinarius, Russula, Cenococcum, Thelephora/Tomentella, Lactarius and Laccaria; two, Clavulina and Leotia, previously have not been reported forming ectomycorrhizas with Nothofagus. Canopy ectomycorrhizas provide an unexpected means for increased host nutrition that may have functional significance in some forest ecosystems. Presumably, canopy ectomycorrhizas on host adventitious roots circumvent the tree-ground-soil nutrient cycle by accessing a wider range of nutrients directly in the canopy than would be possible for non-mycorrhizal or arbuscular mycorrhizal canopy roots. In this system, both host and epiphytes would seem to be in competition for the same pool of nutrients in canopy soil.
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Affiliation(s)
- David A Orlovich
- Department of Botany, University of Otago, Dunedin, New Zealand.
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Arbuscular mycorrhizas and dark septate endophytes in bromeliads from South American arid environment. Symbiosis 2009. [DOI: 10.1007/bf03179966] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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