Solving the ecological puzzle of mycorrhizal associations using data from annotated collections and environmental samples - an example of saddle fungi.
Identifieur interne : 001437 ( Main/Corpus ); précédent : 001436; suivant : 001438Solving the ecological puzzle of mycorrhizal associations using data from annotated collections and environmental samples - an example of saddle fungi.
Auteurs : Jonathan Hwang ; Qi Zhao ; Zhu L. Yang ; Zheng Wang ; Jeffrey P. TownsendSource :
- Environmental microbiology reports [ 1758-2229 ] ; 2015.
English descriptors
- KwdEn :
- Ascomycota (classification), Ascomycota (genetics), Ascomycota (isolation & purification), Biodiversity (MeSH), Biological Evolution (MeSH), Cluster Analysis (MeSH), DNA, Fungal (chemistry), DNA, Fungal (genetics), DNA, Ribosomal Spacer (chemistry), DNA, Ribosomal Spacer (genetics), Ecosystem (MeSH), Mycorrhizae (classification), Mycorrhizae (genetics), Mycorrhizae (isolation & purification), Phylogeny (MeSH), Plants (microbiology), Sequence Analysis, DNA (MeSH), Soil Microbiology (MeSH).
- MESH :
- chemical , chemistry : DNA, Fungal, DNA, Ribosomal Spacer.
- classification : Ascomycota, Mycorrhizae.
- genetics : Ascomycota, DNA, Fungal, DNA, Ribosomal Spacer, Mycorrhizae.
- isolation & purification : Ascomycota, Mycorrhizae.
- microbiology : Plants.
- Biodiversity, Biological Evolution, Cluster Analysis, Ecosystem, Phylogeny, Sequence Analysis, DNA, Soil Microbiology.
Abstract
The relation between ecological and genetic divergence of Helvella species (saddle fungi) has been perplexing. While a few species have been clearly demonstrated to be ectomycorrhizal fungi, ecological roles of many other species have been controversial, alternately considered as either saprotrophic or mycorrhizal. We applied SATé to build an inclusive deoxyribonucleic acid sequence alignment for the internal transcribed spacers (ITS) of annotated Helvella species and related environmental sequences. Phylogenetic informativeness of ITS and its regions were assessed using PhyDesign. Mycorrhizal lineages present a diversity of ecology, host type and geographic distribution. In two Helvella clades, no Helvella ITS sequences were recovered from root tips. Inclusion of environmental sequences in the ITS phylogeny from these sequences has the potential to link these data and reveal Helvella ecology. This study can serve as a model for revealing the diversity of relationships between unculturable fungi and their potential plant hosts. How non-mycorrhizal life styles within Helvella evolved will require expanded metagenomic investigation of soil and other environmental samples along with study of Helvella genomes.
DOI: 10.1111/1758-2229.12303
PubMed: 26033481
Links to Exploration step
pubmed:26033481Le document en format XML
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<author><name sortKey="Zhao, Qi" sort="Zhao, Qi" uniqKey="Zhao Q" first="Qi" last="Zhao">Qi Zhao</name>
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<term>Biological Evolution (MeSH)</term>
<term>Cluster Analysis (MeSH)</term>
<term>DNA, Fungal (chemistry)</term>
<term>DNA, Fungal (genetics)</term>
<term>DNA, Ribosomal Spacer (chemistry)</term>
<term>DNA, Ribosomal Spacer (genetics)</term>
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<term>Mycorrhizae (isolation & purification)</term>
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<front><div type="abstract" xml:lang="en">The relation between ecological and genetic divergence of Helvella species (saddle fungi) has been perplexing. While a few species have been clearly demonstrated to be ectomycorrhizal fungi, ecological roles of many other species have been controversial, alternately considered as either saprotrophic or mycorrhizal. We applied SATé to build an inclusive deoxyribonucleic acid sequence alignment for the internal transcribed spacers (ITS) of annotated Helvella species and related environmental sequences. Phylogenetic informativeness of ITS and its regions were assessed using PhyDesign. Mycorrhizal lineages present a diversity of ecology, host type and geographic distribution. In two Helvella clades, no Helvella ITS sequences were recovered from root tips. Inclusion of environmental sequences in the ITS phylogeny from these sequences has the potential to link these data and reveal Helvella ecology. This study can serve as a model for revealing the diversity of relationships between unculturable fungi and their potential plant hosts. How non-mycorrhizal life styles within Helvella evolved will require expanded metagenomic investigation of soil and other environmental samples along with study of Helvella genomes. </div>
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<Abstract><AbstractText>The relation between ecological and genetic divergence of Helvella species (saddle fungi) has been perplexing. While a few species have been clearly demonstrated to be ectomycorrhizal fungi, ecological roles of many other species have been controversial, alternately considered as either saprotrophic or mycorrhizal. We applied SATé to build an inclusive deoxyribonucleic acid sequence alignment for the internal transcribed spacers (ITS) of annotated Helvella species and related environmental sequences. Phylogenetic informativeness of ITS and its regions were assessed using PhyDesign. Mycorrhizal lineages present a diversity of ecology, host type and geographic distribution. In two Helvella clades, no Helvella ITS sequences were recovered from root tips. Inclusion of environmental sequences in the ITS phylogeny from these sequences has the potential to link these data and reveal Helvella ecology. This study can serve as a model for revealing the diversity of relationships between unculturable fungi and their potential plant hosts. How non-mycorrhizal life styles within Helvella evolved will require expanded metagenomic investigation of soil and other environmental samples along with study of Helvella genomes. </AbstractText>
<CopyrightInformation>© 2015 Society for Applied Microbiology and John Wiley & Sons Ltd.</CopyrightInformation>
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