MycorrhizaeV1, Main, Corpus, bibRecord, 000127

Facilitation of plant water uptake by an arbuscular mycorrhizal fungus: a Gordian knot of roots and hyphae.

Identifieur interne : 000127 ( Main/Corpus ); précédent : 000126; suivant : 000128

Facilitation of plant water uptake by an arbuscular mycorrhizal fungus: a Gordian knot of roots and hyphae.

Auteurs : David Püschel ; Michael Bitterlich ; Jana Rydlová ; Jan Jansa

Source :

Mycorrhiza [ 1432-1890 ] ; 2020.

RBID : pubmed:32253570

English descriptors

KwdEn :
- Glomeromycota (MeSH), Hyphae (MeSH), Mycorrhizae (MeSH), Plant Roots (MeSH), Symbiosis (MeSH), Water (MeSH).
MESH :
- chemical : Water.
- Glomeromycota, Hyphae, Mycorrhizae, Plant Roots, Symbiosis.

Abstract

Arbuscular mycorrhizal (AM) fungi play a positive role in plant water relations, and the AM symbiosis is often cited as beneficial for overcoming drought stress of host plants. Nevertheless, water uptake via mycorrhizal hyphal networks has been little addressed experimentally, especially so through isotope tracing. In a greenhouse study conducted in two-compartment rhizoboxes, Medicago truncatula was planted in the primary compartment (PC), either inoculated with Rhizophagus irregularis or left uninoculated. Plant roots were either allowed to enter the secondary compartment (SC) or were restricted to the PC by root-excluding mesh. Substrate moisture was manipulated in the PC such that the plants were grown either in high moisture (15% of gravimetric water content, GWC) or low moisture (8% GWC). Meanwhile, the SC was maintained at 15% GWC throughout and served as a water source accessible (or not) by roots and/or hyphae. Water in the SC was labeled with deuterium (D) to quantify water uptake by the plants from the SC. Significantly, increased D incorporation into plants indicated higher water uptake by mycorrhizal plants when roots had access to the D source, but this was mainly explained by generally larger mycorrhizal root systems in proximity to the D source. On the other hand, AM fungal hyphae with access to the D source increased D incorporation into plants more than twofold compared to non-mycorrhizal plants. Despite this strong effect, water transport via AM fungal hyphae was low compared to the transpiration demand of the plants.

DOI: 10.1007/s00572-020-00949-9
PubMed: 32253570

Links to Exploration step

pubmed:32253570

Le document en format XML

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<author><name sortKey="Puschel, David" sort="Puschel, David" uniqKey="Puschel D" first="David" last="Püschel">David Püschel</name>
<affiliation><nlm:affiliation>Department of Mycorrhizal Symbioses, Institute of Botany of the Czech Academy of Sciences, Průhonice, Czech Republic. david.puschel@ibot.cas.cz.</nlm:affiliation>
</affiliation>
<affiliation><nlm:affiliation>Laboratory of Fungal Biology, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic. david.puschel@ibot.cas.cz.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Bitterlich, Michael" sort="Bitterlich, Michael" uniqKey="Bitterlich M" first="Michael" last="Bitterlich">Michael Bitterlich</name>
<affiliation><nlm:affiliation>Leibniz Institute of Vegetable and Ornamental Crops e.V. (IGZ), Grossbeeren, Germany.</nlm:affiliation>
</affiliation>
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<author><name sortKey="Rydlova, Jana" sort="Rydlova, Jana" uniqKey="Rydlova J" first="Jana" last="Rydlová">Jana Rydlová</name>
<affiliation><nlm:affiliation>Department of Mycorrhizal Symbioses, Institute of Botany of the Czech Academy of Sciences, Průhonice, Czech Republic.</nlm:affiliation>
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<author><name sortKey="Jansa, Jan" sort="Jansa, Jan" uniqKey="Jansa J" first="Jan" last="Jansa">Jan Jansa</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Facilitation of plant water uptake by an arbuscular mycorrhizal fungus: a Gordian knot of roots and hyphae.</title>
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<affiliation><nlm:affiliation>Department of Mycorrhizal Symbioses, Institute of Botany of the Czech Academy of Sciences, Průhonice, Czech Republic. david.puschel@ibot.cas.cz.</nlm:affiliation>
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<affiliation><nlm:affiliation>Laboratory of Fungal Biology, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic. david.puschel@ibot.cas.cz.</nlm:affiliation>
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<author><name sortKey="Bitterlich, Michael" sort="Bitterlich, Michael" uniqKey="Bitterlich M" first="Michael" last="Bitterlich">Michael Bitterlich</name>
<affiliation><nlm:affiliation>Leibniz Institute of Vegetable and Ornamental Crops e.V. (IGZ), Grossbeeren, Germany.</nlm:affiliation>
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<author><name sortKey="Rydlova, Jana" sort="Rydlova, Jana" uniqKey="Rydlova J" first="Jana" last="Rydlová">Jana Rydlová</name>
<affiliation><nlm:affiliation>Department of Mycorrhizal Symbioses, Institute of Botany of the Czech Academy of Sciences, Průhonice, Czech Republic.</nlm:affiliation>
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<author><name sortKey="Jansa, Jan" sort="Jansa, Jan" uniqKey="Jansa J" first="Jan" last="Jansa">Jan Jansa</name>
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<series><title level="j">Mycorrhiza</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Glomeromycota (MeSH)</term>
<term>Hyphae (MeSH)</term>
<term>Mycorrhizae (MeSH)</term>
<term>Plant Roots (MeSH)</term>
<term>Symbiosis (MeSH)</term>
<term>Water (MeSH)</term>
</keywords>
<keywords scheme="MESH" type="chemical" xml:lang="en"><term>Water</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Glomeromycota</term>
<term>Hyphae</term>
<term>Mycorrhizae</term>
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<term>Symbiosis</term>
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<front><div type="abstract" xml:lang="en">Arbuscular mycorrhizal (AM) fungi play a positive role in plant water relations, and the AM symbiosis is often cited as beneficial for overcoming drought stress of host plants. Nevertheless, water uptake via mycorrhizal hyphal networks has been little addressed experimentally, especially so through isotope tracing. In a greenhouse study conducted in two-compartment rhizoboxes, Medicago truncatula was planted in the primary compartment (PC), either inoculated with Rhizophagus irregularis or left uninoculated. Plant roots were either allowed to enter the secondary compartment (SC) or were restricted to the PC by root-excluding mesh. Substrate moisture was manipulated in the PC such that the plants were grown either in high moisture (15% of gravimetric water content, GWC) or low moisture (8% GWC). Meanwhile, the SC was maintained at 15% GWC throughout and served as a water source accessible (or not) by roots and/or hyphae. Water in the SC was labeled with deuterium (D) to quantify water uptake by the plants from the SC. Significantly, increased D incorporation into plants indicated higher water uptake by mycorrhizal plants when roots had access to the D source, but this was mainly explained by generally larger mycorrhizal root systems in proximity to the D source. On the other hand, AM fungal hyphae with access to the D source increased D incorporation into plants more than twofold compared to non-mycorrhizal plants. Despite this strong effect, water transport via AM fungal hyphae was low compared to the transpiration demand of the plants.</div>
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<Title>Mycorrhiza</Title>
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<ArticleTitle>Facilitation of plant water uptake by an arbuscular mycorrhizal fungus: a Gordian knot of roots and hyphae.</ArticleTitle>
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<Abstract><AbstractText>Arbuscular mycorrhizal (AM) fungi play a positive role in plant water relations, and the AM symbiosis is often cited as beneficial for overcoming drought stress of host plants. Nevertheless, water uptake via mycorrhizal hyphal networks has been little addressed experimentally, especially so through isotope tracing. In a greenhouse study conducted in two-compartment rhizoboxes, Medicago truncatula was planted in the primary compartment (PC), either inoculated with Rhizophagus irregularis or left uninoculated. Plant roots were either allowed to enter the secondary compartment (SC) or were restricted to the PC by root-excluding mesh. Substrate moisture was manipulated in the PC such that the plants were grown either in high moisture (15% of gravimetric water content, GWC) or low moisture (8% GWC). Meanwhile, the SC was maintained at 15% GWC throughout and served as a water source accessible (or not) by roots and/or hyphae. Water in the SC was labeled with deuterium (D) to quantify water uptake by the plants from the SC. Significantly, increased D incorporation into plants indicated higher water uptake by mycorrhizal plants when roots had access to the D source, but this was mainly explained by generally larger mycorrhizal root systems in proximity to the D source. On the other hand, AM fungal hyphae with access to the D source increased D incorporation into plants more than twofold compared to non-mycorrhizal plants. Despite this strong effect, water transport via AM fungal hyphae was low compared to the transpiration demand of the plants.</AbstractText>
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<KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Arbuscular mycorrhizal fungi</Keyword>
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Facilitation of plant water uptake by an arbuscular mycorrhizal fungus: a Gordian knot of roots and hyphae.

Facilitation of plant water uptake by an arbuscular mycorrhizal fungus: a Gordian knot of roots and hyphae.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki