Increasing flavonoid concentrations in root exudates enhance associations between arbuscular mycorrhizal fungi and an invasive plant
| Autor: | Evan Siemann, Wei Huang, Jianqing Ding, Baoliang Tian, Yingchun Pei |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Exudate Population dynamics Flavonoid Biology 01 natural sciences Microbiology Plant Roots Article 03 medical and health sciences chemistry.chemical_compound Soil Mycorrhizae Botany medicine Community ecology Plant ecology Ecology Evolution Behavior and Systematics Soil Microbiology 030304 developmental biology chemistry.chemical_classification Flavonoids 0303 health sciences fungi Fungi food and beverages Exudates and Transudates biology.organism_classification Quercitrin Spore chemistry Germination Triadica sebifera medicine.symptom Soil microbiology 010606 plant biology & botany |
| Zdroj: | The ISME Journal |
| ISSN: | 1751-7370 1751-7362 |
| Popis: | Many invasive plants have enhanced mutualistic arbuscular mycorrhizal (AM) fungal associations, however, mechanisms underlying differences in AM fungal associations between introduced and native populations of invasive plants have not been explored. Here we test the hypothesis that variation in root exudate chemicals in invasive populations affects AM fungal colonization and then impacts plant performance. We examined flavonoids (quercetin and quercitrin) in root exudates of native and introduced populations of the invasive plant Triadica sebifera and tested their effects on AM fungi and plant performance. We found that plants from introduced populations had higher concentrations of quercetin in root exudates, greater AM fungal colonization and higher biomass. Applying root exudates more strongly increased AM fungal colonization of target plants and AM fungal spore germination when exudate donors were from introduced populations. The role of root exudate chemicals was further confirmed by decreased AM fungal colonization when activated charcoal was added into soil. Moreover, addition of quercetin into soil increased AM fungal colonization, indicating quercetin might be a key chemical signal stimulating AM fungal associations. Together these results suggest genetic differences in root exudate flavonoids play an important role in enhancing AM fungal associations and invasive plants’ performance, thus considering root exudate chemicals is critical to unveiling mechanisms governing shifting plant-soil microbe interactions during plant invasions. |
| Databáze: | OpenAIRE |
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