In Planta Sporulation of Frankia spp. as a Determinant of Alder-Symbiont Interactions.
Identifieur interne : 000748 ( Main/Curation ); précédent : 000747; suivant : 000749In Planta Sporulation of Frankia spp. as a Determinant of Alder-Symbiont Interactions.
Auteurs : G. Schwob [France] ; M. Roy [France] ; A C Pozzi [France] ; A. Herrera-Belaroussi [France] ; M P Fernandez [France]Source :
- Applied and environmental microbiology [ 1098-5336 ] ; 2018.
Descripteurs français
- KwdFr :
- Alnus (microbiologie), Alnus (physiologie), Champignons (génétique), Champignons (isolement et purification), Champignons (physiologie), Fixation de l'azote (MeSH), Frankia (classification), Frankia (croissance et développement), Frankia (isolement et purification), Frankia (physiologie), Microbiologie du sol (MeSH), Mycorhizes (génétique), Mycorhizes (isolement et purification), Mycorhizes (physiologie), Nodules racinaires de plante (microbiologie), Nodules racinaires de plante (physiologie), Spores bactériens (classification), Spores bactériens (croissance et développement), Spores bactériens (isolement et purification), Spores bactériens (physiologie), Symbiose (MeSH).
- MESH :
- croissance et développement : Frankia, Spores bactériens.
- génétique : Champignons, Mycorhizes.
- isolement et purification : Champignons, Frankia, Mycorhizes, Spores bactériens.
- microbiologie : Alnus, Nodules racinaires de plante.
- physiologie : Alnus, Champignons, Frankia, Mycorhizes, Nodules racinaires de plante, Spores bactériens.
- classification : Fixation de l'azote, Frankia, Microbiologie du sol, Spores bactériens, Symbiose.
English descriptors
- KwdEn :
- Alnus (microbiology), Alnus (physiology), Frankia (classification), Frankia (growth & development), Frankia (isolation & purification), Frankia (physiology), Fungi (genetics), Fungi (isolation & purification), Fungi (physiology), Mycorrhizae (genetics), Mycorrhizae (isolation & purification), Mycorrhizae (physiology), Nitrogen Fixation (MeSH), Root Nodules, Plant (microbiology), Root Nodules, Plant (physiology), Soil Microbiology (MeSH), Spores, Bacterial (classification), Spores, Bacterial (growth & development), Spores, Bacterial (isolation & purification), Spores, Bacterial (physiology), Symbiosis (MeSH).
- MESH :
- classification : Frankia, Spores, Bacterial.
- genetics : Fungi, Mycorrhizae.
- growth & development : Frankia, Spores, Bacterial.
- isolation & purification : Frankia, Fungi, Mycorrhizae, Spores, Bacterial.
- microbiology : Alnus, Root Nodules, Plant.
- physiology : Alnus, Frankia, Fungi, Mycorrhizae, Root Nodules, Plant, Spores, Bacterial.
- Nitrogen Fixation, Soil Microbiology, Symbiosis.
Abstract
The Alnus genus forms symbiosis with the actinobacteria Frankia spp. and ectomycorrhizal fungi. Two types of Frankia lineages can be distinguished based on their ability to sporulate in planta Spore-positive (Sp+) strains are predominant on Alnus incana and Alnus viridis in highlands, while spore-negative (Sp-) strains are mainly associated with Alnus glutinosa in lowlands. Here, we investigated whether the Sp+ predominance in nodules is due to host selection of certain Frankia genotypes from soil communities or the result of the ecological history of the alder stand soil, as well as the effect of the sporulation genotype on the ectomycorrhizal (ECM) communities. Trapping experiments were conducted using A. glutinosa, A. incana, and A. viridis plantlets on 6 soils, differing in the alder species and the frequency of Sp+ nodules in the field. Higher diversity of Frankia spp. and variation in Sp+ frequencies were observed in the trapping than in the fields. Both indigenous and trapping species shape Frankia community structure in trapped nodules. Nodulation impediments were observed under several trapping conditions in Sp+ soils, supporting a narrower host range of Sp+ Frankia species. A. incana and A. viridis were able to associate equally with compatible Sp+ and Sp- strains in the greenhouse. Additionally, no host shift was observed for Alnus-specific ECM, and the sporulation genotype of Frankia spp. defined the ECM communities on the host roots. The symbiotic association is likely determined by the host range, the soil history, and the type of in plantaFrankia species. These results provide an insight into the biogeographical drivers of alder symbionts in the Holarctic region.IMPORTANCE Most Frankia-actinorhiza plant symbioses are capable of high rates of nitrogen fixation comparable to those found on legumes. Yet, our understanding of the ecology and distribution of Frankia spp. is still very limited. Several studies have focused on the distribution patterns of Frankia spp., demonstrating a combination of host and pedoclimatic parameters in their biogeography. However, very few have considered the in planta sporulation form of the strain, although it is a unique feature among all symbiotic plant-associated microbes. Compared with Sp- Frankia strains, Sp+ strains would be obligate symbionts that are highly dependent on the presence of a compatible host species and with lower efficiency in nitrogen fixation. Understanding the biogeographical drivers of Sp+ Frankia strains might help elucidate the ecological role of in planta sporulation and the extent to which this trait mediates host-partner interactions in the alder-Frankia-ECM fungal symbiosis.
DOI: 10.1128/AEM.01737-18
PubMed: 30217853
PubMed Central: PMC6238062
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Sporulation of Frankia spp. as a Determinant of Alder-Symbiont Interactions.</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en"><i>In Planta</i>
Sporulation of Frankia spp. as a Determinant of Alder-Symbiont Interactions.</title>
<author><name sortKey="Schwob, G" sort="Schwob, G" uniqKey="Schwob G" first="G" last="Schwob">G. Schwob</name>
<affiliation wicri:level="1"><nlm:affiliation>Laboratoire d'Écologie Microbienne, UMR 5557, CNRS, INRA, VetAgro Sup, Université Lyon 1, Université de Lyon, Villeurbanne, France guillaume_schwob@hotmail.fr.</nlm:affiliation>
<country wicri:rule="url">France</country>
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<author><name sortKey="Roy, M" sort="Roy, M" uniqKey="Roy M" first="M" last="Roy">M. Roy</name>
<affiliation wicri:level="1"><nlm:affiliation>Laboratoire Évolution et Diversité Biologique, UMR 5174, UPS, CNRS, ENFA, IRD, Université Paul Sabatier, Toulouse, France.</nlm:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire Évolution et Diversité Biologique, UMR 5174, UPS, CNRS, ENFA, IRD, Université Paul Sabatier, Toulouse</wicri:regionArea>
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<author><name sortKey="Pozzi, A C" sort="Pozzi, A C" uniqKey="Pozzi A" first="A C" last="Pozzi">A C Pozzi</name>
<affiliation wicri:level="1"><nlm:affiliation>Laboratoire d'Écologie Microbienne, UMR 5557, CNRS, INRA, VetAgro Sup, Université Lyon 1, Université de Lyon, Villeurbanne, France.</nlm:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Laboratoire d'Écologie Microbienne, UMR 5557, CNRS, INRA, VetAgro Sup, Université Lyon 1, Université de Lyon, Villeurbanne</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1"><nlm:affiliation>Biométrie et Biologie Evolutive, UMR 5558, CNRS, INRIA, VetAgro Sup, HCL, Université Lyon 1, Université de Lyon, Villeurbanne, France.</nlm:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>Biométrie et Biologie Evolutive, UMR 5558, CNRS, INRIA, VetAgro Sup, HCL, Université Lyon 1, Université de Lyon, Villeurbanne</wicri:regionArea>
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<author><name sortKey="Herrera Belaroussi, A" sort="Herrera Belaroussi, A" uniqKey="Herrera Belaroussi A" first="A" last="Herrera-Belaroussi">A. Herrera-Belaroussi</name>
<affiliation wicri:level="1"><nlm:affiliation>Laboratoire d'Écologie Microbienne, UMR 5557, CNRS, INRA, VetAgro Sup, Université Lyon 1, Université de Lyon, Villeurbanne, France.</nlm:affiliation>
<country xml:lang="fr">France</country>
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<author><name sortKey="Fernandez, M P" sort="Fernandez, M P" uniqKey="Fernandez M" first="M P" last="Fernandez">M P Fernandez</name>
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<country xml:lang="fr">France</country>
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<series><title level="j">Applied and environmental microbiology</title>
<idno type="eISSN">1098-5336</idno>
<imprint><date when="2018" type="published">2018</date>
</imprint>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alnus (microbiology)</term>
<term>Alnus (physiology)</term>
<term>Frankia (classification)</term>
<term>Frankia (growth & development)</term>
<term>Frankia (isolation & purification)</term>
<term>Frankia (physiology)</term>
<term>Fungi (genetics)</term>
<term>Fungi (isolation & purification)</term>
<term>Fungi (physiology)</term>
<term>Mycorrhizae (genetics)</term>
<term>Mycorrhizae (isolation & purification)</term>
<term>Mycorrhizae (physiology)</term>
<term>Nitrogen Fixation (MeSH)</term>
<term>Root Nodules, Plant (microbiology)</term>
<term>Root Nodules, Plant (physiology)</term>
<term>Soil Microbiology (MeSH)</term>
<term>Spores, Bacterial (classification)</term>
<term>Spores, Bacterial (growth & development)</term>
<term>Spores, Bacterial (isolation & purification)</term>
<term>Spores, Bacterial (physiology)</term>
<term>Symbiosis (MeSH)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Alnus (microbiologie)</term>
<term>Alnus (physiologie)</term>
<term>Champignons (génétique)</term>
<term>Champignons (isolement et purification)</term>
<term>Champignons (physiologie)</term>
<term>Fixation de l'azote (MeSH)</term>
<term>Frankia (classification)</term>
<term>Frankia (croissance et développement)</term>
<term>Frankia (isolement et purification)</term>
<term>Frankia (physiologie)</term>
<term>Microbiologie du sol (MeSH)</term>
<term>Mycorhizes (génétique)</term>
<term>Mycorhizes (isolement et purification)</term>
<term>Mycorhizes (physiologie)</term>
<term>Nodules racinaires de plante (microbiologie)</term>
<term>Nodules racinaires de plante (physiologie)</term>
<term>Spores bactériens (classification)</term>
<term>Spores bactériens (croissance et développement)</term>
<term>Spores bactériens (isolement et purification)</term>
<term>Spores bactériens (physiologie)</term>
<term>Symbiose (MeSH)</term>
</keywords>
<keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Frankia</term>
<term>Spores, Bacterial</term>
</keywords>
<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Frankia</term>
<term>Spores bactériens</term>
</keywords>
<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Fungi</term>
<term>Mycorrhizae</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Frankia</term>
<term>Spores, Bacterial</term>
</keywords>
<keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Champignons</term>
<term>Mycorhizes</term>
</keywords>
<keywords scheme="MESH" qualifier="isolation & purification" xml:lang="en"><term>Frankia</term>
<term>Fungi</term>
<term>Mycorrhizae</term>
<term>Spores, Bacterial</term>
</keywords>
<keywords scheme="MESH" qualifier="isolement et purification" xml:lang="fr"><term>Champignons</term>
<term>Frankia</term>
<term>Mycorhizes</term>
<term>Spores bactériens</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Alnus</term>
<term>Nodules racinaires de plante</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Alnus</term>
<term>Root Nodules, Plant</term>
</keywords>
<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Alnus</term>
<term>Champignons</term>
<term>Frankia</term>
<term>Mycorhizes</term>
<term>Nodules racinaires de plante</term>
<term>Spores bactériens</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Alnus</term>
<term>Frankia</term>
<term>Fungi</term>
<term>Mycorrhizae</term>
<term>Root Nodules, Plant</term>
<term>Spores, Bacterial</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Nitrogen Fixation</term>
<term>Soil Microbiology</term>
<term>Symbiosis</term>
</keywords>
<keywords scheme="MESH" qualifier="classification" xml:lang="fr"><term>Fixation de l'azote</term>
<term>Frankia</term>
<term>Microbiologie du sol</term>
<term>Spores bactériens</term>
<term>Symbiose</term>
</keywords>
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<front><div type="abstract" xml:lang="en">The <i>Alnus</i>
genus forms symbiosis with the actinobacteria <i>Frankia</i>
spp. and ectomycorrhizal fungi. Two types of <i>Frankia</i>
lineages can be distinguished based on their ability to sporulate <i>in planta</i>
Spore-positive (Sp+) strains are predominant on <i>Alnus incana</i>
and <i>Alnus viridis</i>
in highlands, while spore-negative (Sp-) strains are mainly associated with <i>Alnus glutinosa</i>
in lowlands. Here, we investigated whether the Sp+ predominance in nodules is due to host selection of certain <i>Frankia</i>
genotypes from soil communities or the result of the ecological history of the alder stand soil, as well as the effect of the sporulation genotype on the ectomycorrhizal (ECM) communities. Trapping experiments were conducted using <i>A. glutinosa</i>
, <i>A. incana</i>
, and <i>A. viridis</i>
plantlets on 6 soils, differing in the alder species and the frequency of Sp+ nodules in the field. Higher diversity of <i>Frankia</i>
spp. and variation in Sp+ frequencies were observed in the trapping than in the fields. Both indigenous and trapping species shape <i>Frankia</i>
community structure in trapped nodules. Nodulation impediments were observed under several trapping conditions in Sp+ soils, supporting a narrower host range of Sp+ <i>Frankia</i>
species. <i>A. incana</i>
and <i>A. viridis</i>
were able to associate equally with compatible Sp+ and Sp- strains in the greenhouse. Additionally, no host shift was observed for <i>Alnus</i>
-specific ECM, and the sporulation genotype of <i>Frankia</i>
spp. defined the ECM communities on the host roots. The symbiotic association is likely determined by the host range, the soil history, and the type of <i>in planta</i>
<i>Frankia</i>
species. These results provide an insight into the biogeographical drivers of alder symbionts in the Holarctic region.<b>IMPORTANCE</b>
Most <i>Frankia</i>
-actinorhiza plant symbioses are capable of high rates of nitrogen fixation comparable to those found on legumes. Yet, our understanding of the ecology and distribution of <i>Frankia</i>
spp. is still very limited. Several studies have focused on the distribution patterns of <i>Frankia</i>
spp., demonstrating a combination of host and pedoclimatic parameters in their biogeography. However, very few have considered the <i>in planta</i>
sporulation form of the strain, although it is a unique feature among all symbiotic plant-associated microbes. Compared with Sp- <i>Frankia</i>
strains, Sp+ strains would be obligate symbionts that are highly dependent on the presence of a compatible host species and with lower efficiency in nitrogen fixation. Understanding the biogeographical drivers of Sp+ <i>Frankia</i>
strains might help elucidate the ecological role of <i>in planta</i>
sporulation and the extent to which this trait mediates host-partner interactions in the alder-<i>Frankia</i>
-ECM fungal symbiosis.</div>
</front>
</TEI>
<pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">30217853</PMID>
<DateCompleted><Year>2019</Year>
<Month>10</Month>
<Day>04</Day>
</DateCompleted>
<DateRevised><Year>2019</Year>
<Month>10</Month>
<Day>07</Day>
</DateRevised>
<Article PubModel="Electronic-Print"><Journal><ISSN IssnType="Electronic">1098-5336</ISSN>
<JournalIssue CitedMedium="Internet"><Volume>84</Volume>
<Issue>23</Issue>
<PubDate><Year>2018</Year>
<Month>12</Month>
<Day>01</Day>
</PubDate>
</JournalIssue>
<Title>Applied and environmental microbiology</Title>
<ISOAbbreviation>Appl Environ Microbiol</ISOAbbreviation>
</Journal>
<ArticleTitle><i>In Planta</i>
Sporulation of Frankia spp. as a Determinant of Alder-Symbiont Interactions.</ArticleTitle>
<ELocationID EIdType="pii" ValidYN="Y">e01737-18</ELocationID>
<ELocationID EIdType="doi" ValidYN="Y">10.1128/AEM.01737-18</ELocationID>
<Abstract><AbstractText>The <i>Alnus</i>
genus forms symbiosis with the actinobacteria <i>Frankia</i>
spp. and ectomycorrhizal fungi. Two types of <i>Frankia</i>
lineages can be distinguished based on their ability to sporulate <i>in planta</i>
Spore-positive (Sp+) strains are predominant on <i>Alnus incana</i>
and <i>Alnus viridis</i>
in highlands, while spore-negative (Sp-) strains are mainly associated with <i>Alnus glutinosa</i>
in lowlands. Here, we investigated whether the Sp+ predominance in nodules is due to host selection of certain <i>Frankia</i>
genotypes from soil communities or the result of the ecological history of the alder stand soil, as well as the effect of the sporulation genotype on the ectomycorrhizal (ECM) communities. Trapping experiments were conducted using <i>A. glutinosa</i>
, <i>A. incana</i>
, and <i>A. viridis</i>
plantlets on 6 soils, differing in the alder species and the frequency of Sp+ nodules in the field. Higher diversity of <i>Frankia</i>
spp. and variation in Sp+ frequencies were observed in the trapping than in the fields. Both indigenous and trapping species shape <i>Frankia</i>
community structure in trapped nodules. Nodulation impediments were observed under several trapping conditions in Sp+ soils, supporting a narrower host range of Sp+ <i>Frankia</i>
species. <i>A. incana</i>
and <i>A. viridis</i>
were able to associate equally with compatible Sp+ and Sp- strains in the greenhouse. Additionally, no host shift was observed for <i>Alnus</i>
-specific ECM, and the sporulation genotype of <i>Frankia</i>
spp. defined the ECM communities on the host roots. The symbiotic association is likely determined by the host range, the soil history, and the type of <i>in planta</i>
<i>Frankia</i>
species. These results provide an insight into the biogeographical drivers of alder symbionts in the Holarctic region.<b>IMPORTANCE</b>
Most <i>Frankia</i>
-actinorhiza plant symbioses are capable of high rates of nitrogen fixation comparable to those found on legumes. Yet, our understanding of the ecology and distribution of <i>Frankia</i>
spp. is still very limited. Several studies have focused on the distribution patterns of <i>Frankia</i>
spp., demonstrating a combination of host and pedoclimatic parameters in their biogeography. However, very few have considered the <i>in planta</i>
sporulation form of the strain, although it is a unique feature among all symbiotic plant-associated microbes. Compared with Sp- <i>Frankia</i>
strains, Sp+ strains would be obligate symbionts that are highly dependent on the presence of a compatible host species and with lower efficiency in nitrogen fixation. Understanding the biogeographical drivers of Sp+ <i>Frankia</i>
strains might help elucidate the ecological role of <i>in planta</i>
sporulation and the extent to which this trait mediates host-partner interactions in the alder-<i>Frankia</i>
-ECM fungal symbiosis.</AbstractText>
<CopyrightInformation>Copyright © 2018 American Society for Microbiology.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Schwob</LastName>
<ForeName>G</ForeName>
<Initials>G</Initials>
<AffiliationInfo><Affiliation>Laboratoire d'Écologie Microbienne, UMR 5557, CNRS, INRA, VetAgro Sup, Université Lyon 1, Université de Lyon, Villeurbanne, France guillaume_schwob@hotmail.fr.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Roy</LastName>
<ForeName>M</ForeName>
<Initials>M</Initials>
<AffiliationInfo><Affiliation>Laboratoire Évolution et Diversité Biologique, UMR 5174, UPS, CNRS, ENFA, IRD, Université Paul Sabatier, Toulouse, France.</Affiliation>
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<ForeName>A C</ForeName>
<Initials>AC</Initials>
<AffiliationInfo><Affiliation>Laboratoire d'Écologie Microbienne, UMR 5557, CNRS, INRA, VetAgro Sup, Université Lyon 1, Université de Lyon, Villeurbanne, France.</Affiliation>
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<AffiliationInfo><Affiliation>Biométrie et Biologie Evolutive, UMR 5558, CNRS, INRIA, VetAgro Sup, HCL, Université Lyon 1, Université de Lyon, Villeurbanne, France.</Affiliation>
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<Author ValidYN="Y"><LastName>Herrera-Belaroussi</LastName>
<ForeName>A</ForeName>
<Initials>A</Initials>
<AffiliationInfo><Affiliation>Laboratoire d'Écologie Microbienne, UMR 5557, CNRS, INRA, VetAgro Sup, Université Lyon 1, Université de Lyon, Villeurbanne, France.</Affiliation>
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<ForeName>M P</ForeName>
<Initials>MP</Initials>
<AffiliationInfo><Affiliation>Laboratoire d'Écologie Microbienne, UMR 5557, CNRS, INRA, VetAgro Sup, Université Lyon 1, Université de Lyon, Villeurbanne, France.</Affiliation>
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<Month>11</Month>
<Day>15</Day>
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<MeshHeading><DescriptorName UI="D013559" MajorTopicYN="Y">Symbiosis</DescriptorName>
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<Keyword MajorTopicYN="Y">actinorhizal symbiosis</Keyword>
<Keyword MajorTopicYN="Y">ectomycorrhizae</Keyword>
<Keyword MajorTopicYN="Y">host specificity</Keyword>
<Keyword MajorTopicYN="Y">in planta sporulation</Keyword>
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<Month>09</Month>
<Day>12</Day>
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