Hybridization in Populus alters the species composition and interactions of root-colonizing fungi: consequences for host plant performance

Interactions among plants and soil microbes can significantly influence plant communities, yet we understand little about how hybridization of plant species might alter these interactions. In addition, few studies have explored the effects of different components of soil microbial communities on pla...

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Bibliographic Details
Published inBotany Vol. 92; no. 4; pp. 287 - 293
Main Authors GEHRING, Catherine A, BAOMING JI, FONG, Sarah, WHITHAM, Thomas G
Format Conference Proceeding Journal Article
LanguageEnglish
Published Ottawa, ON National Research Council of Canada 01.04.2014
NRC Research Press
Subjects
Agronomy. Soil science and plant productions
Biological and medical sciences
Botanical research
Diseases and pests
Economic plant physiology
Environmental aspects
Fundamental and applied biological sciences. Psychology
Genetics and breeding of economic plants
Interspecific and intergeneric hybridization, introgressions
Mycorrhizas
Plant breeding: fundamental aspects and methodology
Plant-pathogen relationships
Poplar
Populus angustifolia
Populus fremontii
Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...)
United States
Root
Feedback regulation
Glomeromycota
Symbiont
Salicaceae
Fungi
Soils
Fungus
Endomycorrhiza
Dicotyledones
Host plant
Angiospermae
Mycorrhiza
Interspecific hybridization
Tree
Endophyte
Spermatophyta
Populus
Soil plant relation
Species
Colonization
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Summary:Interactions among plants and soil microbes can significantly influence plant communities, yet we understand little about how hybridization of plant species might alter these interactions. In addition, few studies have explored the effects of different components of soil microbial communities on plant performance. We tested for feedbacks between soil microbes within a Populus hybridizing system using approaches that allowed us to isolate the effects of arbuscular mycorrhizal fungi (AMF) and root endophytes. We found significant differences among the arbuscular mycorrhizal (AM) fungal spore communities cultured from Populus angustifolia James, Populus fremontii S. Watson, and their [F.sub.1] hybrids. Populus angustifolia cuttings grew 40% larger when inoculated with AM fungal spores from [F.sub.1] hybrids than with spores from P. fremontii, while growth with spores from P. angustifolia was intermediate. However, parental and hybrid inocula promoted growth equally when soil inoculum
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ISSN:1916-2790
1916-2804
DOI:10.1139/cjb-2013-0174