New evidence of ectomycorrhizal fungi in the Hawaiian Islands associated with the endemic host Pisonia sandwicensis (Nyctaginaceae)

Hayward, J.; Hynson, Nicole A.

doi:10.1016/j.funeco.2014.09.001

Cited by 18 publications

(12 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All of these factors may be important in structuring their ECM fungal communities. Hosts such as Coccoloba uvifera , Pisonia grandis and Pisonia sandwicensis inhabit stressful, saline coastal habitats and they always associate with a small suite of specific ECM fungi (Chambers et al ., ; Suvi et al ., ; Hayward & Hynson, ; Séne et al ., ). In the case of Alnus , specificity is linked to the co‐migration of plants and their ECM fungi from the northern hemisphere (Kennedy et al ., ).…”

Section: Beta Diversity Patterns In Tropical Ecm Fungal Communitiesmentioning

confidence: 99%

“…In contrast to the more common scenario of low host preferences, there are some unusual plant species or genera that are associated with a specific and reduced set of ECM fungi. These include species of Coccoloba (Põlme et al, 2017), Pisonia (Suvi et al, 2010;Hayward & Hynson, 2014), Alnus (Kennedy et al, 2011;Põlme et al, 2013) and Gnetum (Tedersoo & Põlme, 2012). These associations could result from long-term coevolution between plants and fungi, strong environmental filtering, or a combination of both factors (Huggins et al, 2014;Põlme et al, 2017).…”

Section: Effects Of Host Specificity On Ecm Fungal Community Structurementioning

confidence: 99%

See 1 more Smart Citation

Ectomycorrhizal associations in the tropics – biogeography, diversity patterns and ecosystem roles

2018

View full text Add to dashboard Cite

Contents Summary 1076 I. Introduction 1076 II. Historical overview 1077 III. Identities and distributions of tropical ectomycorrhizal plants 1077 IV. Dominance of tropical forests by ECM trees 1078 V. Biogeography of tropical ECM fungi 1081 VI. Beta diversity patterns in tropical ECM fungal communities 1082 VII. Conclusions and future research 1086 Acknowledgements 1087 References 1087 SUMMARY: Ectomycorrhizal (ECM) associations were historically considered rare or absent from tropical ecosystems. Although most tropical forests are dominated by arbuscular mycorrhizal (AM) trees, ECM associations are widespread and found in all tropical regions. Here, we highlight emerging patterns of ECM biogeography, diversity and ecosystem functions, identify knowledge gaps, and offer direction for future research. At the continental and regional scales, tropical ECM systems are highly diverse and vary widely in ECM plant and fungal abundance, diversity, composition and phylogenetic affinities. We found strong regional differences among the dominant host plant families, suggesting that biogeographical factors strongly influence tropical ECM symbioses. Both ECM plants and fungi also exhibit strong turnover along altitudinal and soil fertility gradients, suggesting niche differentiation among taxa. Ectomycorrhizal fungi are often more abundant and diverse in sites with nutrient-poor soils, suggesting that ECM associations can optimize plant nutrition and may contribute to the maintenance of tropical monodominant forests. More research is needed to elucidate the diversity patterns of ECM fungi and plants in the tropics and to clarify the role of this symbiosis in nutrient and carbon cycling.

show abstract

Section: Beta Diversity Patterns In Tropical Ecm Fungal Communitiesmentioning

confidence: 99%

Section: Effects Of Host Specificity On Ecm Fungal Community Structurementioning

confidence: 99%

Ectomycorrhizal associations in the tropics – biogeography, diversity patterns and ecosystem roles

2018

View full text Add to dashboard Cite

show abstract

“…Thus, ocean-dispersed plant material, including floating seeds, asexual propagules, or entire root balls, may explain the geographic range of some fungi that are found on two sides of, e.g., an ocean. Little to no direct evidence for this phenomenon has been collected to date, and phylogenetic analyses testing whether plants and fungi disperse together are, surprisingly, lacking (85). Anecdotal evidence of arbuscular mycorrhizae occurring most frequently and with greater biomass on Hawaiian endemic beach grass species has been used to suggest fungus-plant long distance codispersal (86,87).…”

Section: Plantsmentioning

confidence: 99%

Long-Distance Dispersal of Fungi

2017

View full text Add to dashboard Cite

Dispersal is a fundamental biological process, operating at multiple temporal and spatial scales. Despite an increasing understanding of fungal biodiversity, most research on fungal dispersal focuses on only a small fraction of species. Thus, any discussion of the dispersal dynamics of fungi as a whole is problematic. While abundant morphological and biogeographic data are available for hundreds of species, researchers have yet to integrate this information into a unifying paradigm of fungal dispersal, especially in the context of long-distance dispersal (LDD). Fungal LDD is mediated by multiple vectors, including meteorological phenomena (e.g., wind and precipitation), plants (e.g., seeds and senesced leaves), animals (e.g., fur, feathers, and gut microbiomes), and in many cases humans. In addition, fungal LDD is shaped by both physical constraints on travel and the ability of spores to survive harsh environments. Finally, fungal LDD is commonly measured in different ways, including by direct capture of spores, genetic comparisons of disconnected populations, and statistical modeling and simulations of dispersal data. To unify perspectives on fungal LDD, we propose a synthetic three-part definition that includes (i) an identification of the source population and a measure of the concentration of source inoculum and (ii) a measured and/or modeled dispersal kernel. With this information, LDD is defined as (iii) the distance found within the dispersal kernel beyond which only 1% of spores travel.

show abstract

“…The sister species to L. hawaiensis , L. japonica associates only with specific Tulasnella species [34], while other species of Anoectochilus appear to be more diverse in their fungal partnerships associating with rhizoctonias and in A. roxburghii , at least one normally saprotrophic species of Mycena [31,35]. Based on Sanger sequencing of the fungal barcode locus (the nuclear ribosomal internal transcribed spacer region) from a subset of the individuals of A. sandvicensis and all individuals of L. hawaiensis from the current study both species associate strictly with either Ceratobasidium spp.…”

Section: Introductionmentioning

confidence: 99%

The carbon and nitrogen ecophysiologies of two endemic tropical orchids mirrors those of their temperate relatives and the local environment

Hynson¹

2016

R. Soc. open sci.

Self Cite

View full text Add to dashboard Cite

Orchids are one of the most widely distributed plant families. However, current research on the ecophysiology of terrestrial orchids is biased towards temperate species. Thus, it is currently unknown whether tropical terrestrial orchids belong to similar trophic guilds as their temperate relatives. To examine the ecophysiologies of two tropical terrestrial orchids, I analysed the carbon and nitrogen stable isotope compositions and nitrogen concentrations of the Hawaiian endemics Anoectochilus sandvicensis and Liparis hawaiensis. I compared these values with those of surrounding vegetation and their temperate relatives. I found that A. sandvicensis was consistently enriched in the heavy isotope of nitrogen (15N) and had higher nitrogen (N) concentrations than surrounding vegetation, and these values were even higher than those of its temperate relatives. Carbon stable isotope composition among populations of A. sandvicensis varied by island. These results point to local environment and evolutionary history determining the ecophysiology of this species. Whereas L.hawaiensis was also enriched in 15N and had on average higher N concentrations than surrounding vegetation, these values were not significantly different from temperate relatives, indicating that evolutionary history may be a stronger predictor of this orchid species' ecophysiology than environment. I suggest that both Hawaiian species are potentially partially mycoheterotrophic.

show abstract

New evidence of ectomycorrhizal fungi in the Hawaiian Islands associated with the endemic host Pisonia sandwicensis (Nyctaginaceae)

Cited by 18 publications

References 45 publications

Ectomycorrhizal associations in the tropics – biogeography, diversity patterns and ecosystem roles

Ectomycorrhizal associations in the tropics – biogeography, diversity patterns and ecosystem roles

Long-Distance Dispersal of Fungi

The carbon and nitrogen ecophysiologies of two endemic tropical orchids mirrors those of their temperate relatives and the local environment

Contact Info

Product

Resources

About