journal article Nov 23, 2023

Beneath the blooms: Unearthing the effect of rhizospheric bacteria on floral signals and pollinator preferences

Plant, Cell & Environment Vol. 47 No. 3 pp. 782-798 · Wiley
View at Publisher Save 10.1111/pce.14771
Abstract
AbstractThe relationship between plants and pollinators is known to be influenced by ecological interactions with other community members. While most research has focused on aboveground communities affecting plant–pollinator interactions, it is increasingly recognized that soil‐dwelling organisms can directly or indirectly impact these interactions. Although studies have examined the effects of arbuscular mycorrhizal fungi on floral traits, there is a gap in research regarding similar effects associated with plant growth‐promoting rhizobacteria (PGPR), particularly concerning floral scent. Our study aimed to investigate the influence of the PGPR Bacillus amyloliquefaciens on the floral traits of wild (Solanum habrochaites, Solanum pimpinellifolium and Solanum peruvianum) and cultivated tomato (Solanum lycopersicum), as well as the impact of microbially‐driven changes in floral scent on the foraging behaviour of the stingless bee Melipona quadrifasciata. Our findings revealed that inoculating tomatoes with PGPR led to an increased number of flowers and enhanced overall floral volatile emission. Additionally, we observed higher flower biomass and pollen levels in all species, except S. peruvianum. Importantly, these changes in volatile emissions influenced the foraging behaviour of M. quadrifasciata significantly. Our results highlight the impact of beneficial soil microbes on plant–pollinator interactions, shedding light on the multiple effects that plant–microbial interactions can have on aboveground organisms.
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Details
Published
Nov 23, 2023
Vol/Issue
47(3)
Pages
782-798
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Cite This Article
Diego M. Magalhães, André L. Lourenção, José Maurício S. Bento (2023). Beneath the blooms: Unearthing the effect of rhizospheric bacteria on floral signals and pollinator preferences. Plant, Cell & Environment, 47(3), 782-798. https://doi.org/10.1111/pce.14771
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