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Study finds soil microbes affect flowers' ability to attract bees
New research reveals that certain soil microbes can help plants grow bigger flowers, therefore attracting more bees. The findings, which are in New Phytologist, suggest that studying roots' relationships with microbes can help scientists predict floral trait variations and plant-pollinator interactions.
The research focused on arbuscular mycorrhizal fungi (AMF), which form a symbiotic relationship with plant roots, providing the plant with nutrients and water in exchange for carbon. AMF associations with plants' roots enhanced flower size, resulting in more visitations by bees; however, especially high AMF root colonization caused smaller flowers, indicating potential trade-offs between plant growth and fungal associations.
"Our findings reveal that the hidden roles of AMF can emerge when we look beyond plant growth or a single AMF species," said corresponding author Aidee Guzman, Ph.D., who was at the University of California Berkeley while conducting this research and is now an Assistant Professor at Stanford University.
"Floral traits and bee activity varied between compositionally distinct AMF communities, emphasizing that not all AMF communities are the same."
More information: Aidee Guzman et al, Arbuscular mycorrhizal interactions and nutrient supply mediate floral trait variation and bee visitation, New Phytologist (2024).
Journal information: New Phytologist
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