MycorrhizaeV1, Main, Corpus, bibRecord, 001103

L-System model for the growth of arbuscular mycorrhizal fungi, both within and outside of their host roots.

Identifieur interne : 001103 ( Main/Corpus ); précédent : 001102; suivant : 001104

L-System model for the growth of arbuscular mycorrhizal fungi, both within and outside of their host roots.

Auteurs : A. Schnepf ; D. Leitner ; P F Schweiger ; P. Scholl ; J. Jansa

Source :

Journal of the Royal Society, Interface [ 1742-5662 ] ; 2016.

RBID : pubmed:27097653

English descriptors

KwdEn :
- Hyphae (growth & development), Models, Biological (MeSH), Mycorrhizae (growth & development).
MESH :
- growth & development : Hyphae, Mycorrhizae.
- Models, Biological.

Abstract

Development of arbuscular mycorrhizal fungal colonization of roots and the surrounding soil is the central process of mycorrhizal symbiosis, important for ecosystem functioning and commercial inoculum applications. To improve mechanistic understanding of this highly spatially and temporarily dynamic process, we developed a three-dimensional model taking into account growth of the roots and hyphae. It is for the first time that infection within the root system is simulated dynamically and in a spatially resolved way. Comparison between data measured in a calibration experiment and simulated results showed a good fit. Our simulations showed that the position of the fungal inoculum affects the sensitivity of hyphal growth parameters. Variation in speed of secondary infection and hyphal lifetime had a different effect on root infection and hyphal length, respectively, depending on whether the inoculum was concentrated or dispersed. For other parameters (branching rate, distance between entry points), the relative effect was the same independent of inoculum placement. The model also indicated that maximum root colonization levels well below 100%, often observed experimentally, may be a result of differential spread of roots and hyphae, besides intrinsic plant control, particularly upon localized placement of inoculum and slow secondary infection.

DOI: 10.1098/rsif.2016.0129
PubMed: 27097653
PubMed Central: PMC4874435

Links to Exploration step

pubmed:27097653

Le document en format XML

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<author><name sortKey="Schnepf, A" sort="Schnepf, A" uniqKey="Schnepf A" first="A" last="Schnepf">A. Schnepf</name>
<affiliation><nlm:affiliation>Forschungszentrum Juelich GmbH, Institute of Bio- and Geosciences, IBG-3: Agrosphere, 52425 Juelich, Germany a.schnepf@fz-juelich.de.</nlm:affiliation>
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<author><name sortKey="Leitner, D" sort="Leitner, D" uniqKey="Leitner D" first="D" last="Leitner">D. Leitner</name>
<affiliation><nlm:affiliation>Computational Science Center, University of Vienna, Oskar Morgenstern-Platz 1, 1090 Vienna, Austria.</nlm:affiliation>
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<author><name sortKey="Schweiger, P F" sort="Schweiger, P F" uniqKey="Schweiger P" first="P F" last="Schweiger">P F Schweiger</name>
<affiliation><nlm:affiliation>Department of Microbiology and Ecosystem Science, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.</nlm:affiliation>
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<author><name sortKey="Scholl, P" sort="Scholl, P" uniqKey="Scholl P" first="P" last="Scholl">P. Scholl</name>
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<author><name sortKey="Jansa, J" sort="Jansa, J" uniqKey="Jansa J" first="J" last="Jansa">J. Jansa</name>
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<author><name sortKey="Schweiger, P F" sort="Schweiger, P F" uniqKey="Schweiger P" first="P F" last="Schweiger">P F Schweiger</name>
<affiliation><nlm:affiliation>Department of Microbiology and Ecosystem Science, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.</nlm:affiliation>
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<front><div type="abstract" xml:lang="en">Development of arbuscular mycorrhizal fungal colonization of roots and the surrounding soil is the central process of mycorrhizal symbiosis, important for ecosystem functioning and commercial inoculum applications. To improve mechanistic understanding of this highly spatially and temporarily dynamic process, we developed a three-dimensional model taking into account growth of the roots and hyphae. It is for the first time that infection within the root system is simulated dynamically and in a spatially resolved way. Comparison between data measured in a calibration experiment and simulated results showed a good fit. Our simulations showed that the position of the fungal inoculum affects the sensitivity of hyphal growth parameters. Variation in speed of secondary infection and hyphal lifetime had a different effect on root infection and hyphal length, respectively, depending on whether the inoculum was concentrated or dispersed. For other parameters (branching rate, distance between entry points), the relative effect was the same independent of inoculum placement. The model also indicated that maximum root colonization levels well below 100%, often observed experimentally, may be a result of differential spread of roots and hyphae, besides intrinsic plant control, particularly upon localized placement of inoculum and slow secondary infection. </div>
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<Abstract><AbstractText>Development of arbuscular mycorrhizal fungal colonization of roots and the surrounding soil is the central process of mycorrhizal symbiosis, important for ecosystem functioning and commercial inoculum applications. To improve mechanistic understanding of this highly spatially and temporarily dynamic process, we developed a three-dimensional model taking into account growth of the roots and hyphae. It is for the first time that infection within the root system is simulated dynamically and in a spatially resolved way. Comparison between data measured in a calibration experiment and simulated results showed a good fit. Our simulations showed that the position of the fungal inoculum affects the sensitivity of hyphal growth parameters. Variation in speed of secondary infection and hyphal lifetime had a different effect on root infection and hyphal length, respectively, depending on whether the inoculum was concentrated or dispersed. For other parameters (branching rate, distance between entry points), the relative effect was the same independent of inoculum placement. The model also indicated that maximum root colonization levels well below 100%, often observed experimentally, may be a result of differential spread of roots and hyphae, besides intrinsic plant control, particularly upon localized placement of inoculum and slow secondary infection. </AbstractText>
<CopyrightInformation>© 2016 The Author(s).</CopyrightInformation>
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L-System model for the growth of arbuscular mycorrhizal fungi, both within and outside of their host roots.

L-System model for the growth of arbuscular mycorrhizal fungi, both within and outside of their host roots.

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