Modulation of fungal phosphate homeostasis by the plant hormone strigolactone
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Date
2024-10-17
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Journal Article
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Abstract
Inter-kingdom communication through small molecules is essential to the coexistence of organisms in an ecosystem. In soil communities, the plant root is a nexus of interactions for a remarkable number of fungi and is a source of small-molecule plant hormones that shape fungal compositions. Although hormone signaling pathways are established in plants, how fungi perceive and respond to molecules is unclear because many plant-associated fungi are recalcitrant to experimentation. Here, we develop an approach using the model fungus, Saccharomyces cerevisiae, to elucidate mechanisms of fungal response to plant hormones. Two plant hormones, strigolactone and methyl jasmonate, produce unique transcript profiles in yeast, affecting phosphate and sugar metabolism, respectively. Genetic analysis in combination with structural studies suggests that SLs require the high-affinity transporter Pho84 to modulate phosphate homeostasis. The ability to study small-molecule plant hormones in a tractable genetic system should have utility in understanding fungal-plant interactions.
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84 (20)
Pages / Article No.
4031 - 4047
Publisher
Cell Press
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Subject
chemical communication; Interspecies sensing; Saccharomyces cerevisiae; Strigolactone; jasmonate; Genetic analysis; plant hormone signaling; fungal kingdom; Chemical ecology; plant-fungal symbiosis