Mycorrhizal response trades off with plant growth rate and increases with plant successional status.
Identifieur interne : 001474 ( Main/Exploration ); précédent : 001473; suivant : 001475Mycorrhizal response trades off with plant growth rate and increases with plant successional status.
Auteurs : Liz Koziol ; James D. BeverSource :
- Ecology [ 0012-9658 ] ; 2015.
Descripteurs français
- KwdFr :
- MESH :
- anatomie et histologie : Racines de plante.
- croissance et développement : Racines de plante.
- microbiologie : Plantes, Racines de plante.
- physiologie : Développement des plantes, Mycorhizes.
- Animaux, Prairie, Écosystème.
English descriptors
- KwdEn :
- MESH :
- anatomy & histology : Plant Roots.
- growth & development : Plant Roots.
- microbiology : Plant Roots, Plants.
- physiology : Mycorrhizae, Plant Development.
- Animals, Ecosystem, Grassland.
Abstract
Early-successional plant species invest in rapid growth and reproduction in contrast to slow growing late-successional species. We test the consistency of "trade-offs between plant life history and responsiveness on arbuscular mycorrhizal fungi. We selected four very early-, seven early-, 11 middle-, and eight late-successional plant species from six different families and functional groups and grew them with and without a mixed fungal inoculum and compared root architecture, mycorrhizal responsiveness, and plant growth rate. Our results indicate mycorrhizal responsiveness increases with plant successional stage and that this effect explains more variation in mycorrhizal response than is explained by phylogenetic relatedness. The mycorrhizal responsiveness of individual plant species was positively correlated with mycorrhizal root infection and negatively correlated with average plant mass and the number of root tips per unit mass, indicating that both plant growth rate and root architecture trade off with investment in mycorrhizal mutualisms. Because late-successional plants are very responsive to mycorrhizal fungi, our results suggest that fungal community dynamics may be an important driver of plant succession.
DOI: 10.1890/14-2208.1
PubMed: 26378299
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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We test the consistency of "trade-offs between plant life history and responsiveness on arbuscular mycorrhizal fungi. We selected four very early-, seven early-, 11 middle-, and eight late-successional plant species from six different families and functional groups and grew them with and without a mixed fungal inoculum and compared root architecture, mycorrhizal responsiveness, and plant growth rate. Our results indicate mycorrhizal responsiveness increases with plant successional stage and that this effect explains more variation in mycorrhizal response than is explained by phylogenetic relatedness. The mycorrhizal responsiveness of individual plant species was positively correlated with mycorrhizal root infection and negatively correlated with average plant mass and the number of root tips per unit mass, indicating that both plant growth rate and root architecture trade off with investment in mycorrhizal mutualisms. Because late-successional plants are very responsive to mycorrhizal fungi, our results suggest that fungal community dynamics may be an important driver of plant succession.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">26378299</PMID><DateCompleted><Year>2015</Year><Month>10</Month><Day>09</Day></DateCompleted><DateRevised><Year>2019</Year><Month>09</Month><Day>02</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0012-9658</ISSN><JournalIssue CitedMedium="Print"><Volume>96</Volume><Issue>7</Issue><PubDate><Year>2015</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Ecology</Title><ISOAbbreviation>Ecology</ISOAbbreviation></Journal><ArticleTitle>Mycorrhizal response trades off with plant growth rate and increases with plant successional status.</ArticleTitle><Pagination><MedlinePgn>1768-74</MedlinePgn></Pagination><Abstract><AbstractText>Early-successional plant species invest in rapid growth and reproduction in contrast to slow growing late-successional species. We test the consistency of "trade-offs between plant life history and responsiveness on arbuscular mycorrhizal fungi. We selected four very early-, seven early-, 11 middle-, and eight late-successional plant species from six different families and functional groups and grew them with and without a mixed fungal inoculum and compared root architecture, mycorrhizal responsiveness, and plant growth rate. Our results indicate mycorrhizal responsiveness increases with plant successional stage and that this effect explains more variation in mycorrhizal response than is explained by phylogenetic relatedness. The mycorrhizal responsiveness of individual plant species was positively correlated with mycorrhizal root infection and negatively correlated with average plant mass and the number of root tips per unit mass, indicating that both plant growth rate and root architecture trade off with investment in mycorrhizal mutualisms. 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