Competitive interactions are mediated in a sex-specific manner by arbuscular mycorrhiza inAntennaria dioica
| Autor: | Sandra Varga, Minna-Maarit Kytöviita, Rocío Vega-Frutis |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
C240 Plant Cell Science
0106 biological sciences Hieracium pilosella plant-plant interactions media_common.quotation_subject Dioecy Hyphae Antennaria dioica Plant Science Asteraceae Plant Roots 010603 evolutionary biology 01 natural sciences Competition (biology) Intraspecific competition Glomeromycota Mycorrhizae Botany Biomass Symbiosis Ecology Evolution Behavior and Systematics media_common biology Reproduction ta1183 fungi food and beverages General Medicine Interspecific competition biology.organism_classification dioecy Plant ecology Arbuscular mycorrhiza sexual dimorphism ta1181 C250 Plant Pathology competition 010606 plant biology & botany |
| Zdroj: | Plant Biology. 19:217-226 |
| ISSN: | 1435-8603 |
| DOI: | 10.1111/plb.12510 |
| Popis: | Plants usually interact with other plants, and the outcome of such interaction ranges from facilitation to competition depending on the identity of the plants, including their sexual expression. Arbuscular mycorrhizal (AM) fungi have been shown to modify competitive interactions in plants. However, few studies have evaluated how AM fungi influence plant intraspecific and interspecific interactions in dioecious species. The competitive abilities of female and male plants of Antennaria dioica were examined in a greenhouse experiment. Females and males were grown in the following competitive settings: (i) without competition, (ii) with intrasexual competition, (iii) with intersexual competition, and (iv) with interspecific competition by Hieracium pilosella – a plant with similar characteristics to A. dioica. Half of the pots were grown with Claroideoglomus claroideum, an AM fungus isolated from the same habitat as the plant material. We evaluated plant survival, growth, flowering phenology, and production of AM fungal structures. Plant survival was unaffected by competition or AM fungi. Competition and the presence of AM fungi reduced plant biomass. However, the sexes responded differently to the interaction between fungal and competition treatments. Both intra- and interspecific competition results were sex-specific, and in general, female performance was reduced by AM colonization. Plant competition or sex did not affect the intraradical structures, extraradical hyphae, or spore production of the AM fungus. These findings suggest that plant sexual differences affect fundamental processes such as competitive ability and symbiotic relationships with AM fungi. |
| Databáze: | OpenAIRE |
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