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Flavonoids Released Naturally from Alfalfa Promote Development of Symbiotic Glomus Spores In Vitro
Open accessAbstract
Because flavonoids from legumes induce transcription of nodulation genes in symbiotic rhizobial bacteria, it is reasonable to test whether these compounds alter the development of vesicular-arbuscular mycorrhizal (VAM) fungi that infect those plants. Quercetin-3- O -galactoside, the dominant flavonoid released naturally from alfalfa ( Medicago sativa L.) seeds, promoted spore germination of Glomus etunicatum and Glomus macrocarpum in vitro. Quercetin produced the maximum increases in spore germination, hyphal elongation, and hyphal branching in G. etunicatum at 1 to 2.5 μM concentrations. Two flavonoids exuded from alfalfa roots, 4′,7-dihydroxyflavone and 4′,7-dihydroxyflavanone, also enhanced spore germination of this fungal species. Formononetin, an isoflavone that is released from stressed alfalfa roots, inhibited germination of both Glomus species. These in vitro results suggest that plant flavonoids may facilitate or regulate the development of VAM symbioses and offer new hope for developing pure, plant-free cultures of VAM fungi.
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Cited by
Plant and mycorrhizal regulation of rhizodeposition
Jones, D. L., Hodge, A., & Kuzyakov, Y. (2004) · New Phytologist · doi:10.1111/j.1469-8137.2004.01130.x · Cited by 1,371
Root exudates as mediators of mineral acquisition in low-nutrient environments
Dakora, F. D., & Phillips, D. A. (2002) · Food Security in Nutrient-Stressed Environments: Exploiting Plants’ Genetic Capabilities · doi:10.1007/978-94-017-1570-6_23 · Cited by 1,160
Self-citationFlavonoids: Their Structure, Biosynthesis and Role in the Rhizosphere, Including Allelopathy
Weston, L. A., & Mathesius, U. (2013) · Journal of Chemical Ecology · doi:10.1007/s10886-013-0248-5 · Cited by 465
Strigolactones: Chemical Signals for Fungal Symbionts and Parasitic Weeds in Plant Roots
AKIYAMA, K., & HAYASHI, H. (2006) · Annals of Botany · doi:10.1093/aob/mcl063 · Cited by 403
MICROBIAL DYNAMICS AND INTERACTIONS IN THE SPERMOSPHERE
Nelson, E. B. (2004) · Annual Review of Phytopathology · doi:10.1146/annurev.phyto.42.121603.131041 · Cited by 396
Metadata
- Authors
- Tsai, S. M., & Phillips, D. A.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 1991-05
- Volume
- 57
- Issue
- 5
- Pages
- 1485-1488
- ISSN
- 0099-2240 (ISSN-L)
- 1098-5336
- OpenAlex
- W1542796341
- Cited by
- 245
- References
- 0
- FWCI
- 7.67
- Type
- journal article
- Language
- en
- Open access
- green
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- Tsai, S. M., & Phillips, D. A. (1991). Flavonoids Released Naturally from Alfalfa Promote Development of Symbiotic Glomus Spores In Vitro. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.57.5.1485-1488.1991
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