Herbaria unlock tripartite pollination responses to anthropogenic change.
Puleo LH, Fukami T, Daru BH.
Pollinators
The wild bees visiting your garden flowers are also delivering yeasts and bacteria that alter the nectar's chemistry — and that microbial handoff, invisible to us, is being quietly disrupted by pesticides, habitat loss, and climate change in ways we're only beginning to measure.
Most people think of pollination as a simple deal: a bee visits a flower, picks up pollen, and moves on. But nectar is also teeming with tiny microbes — yeasts and bacteria — that change its smell, sugar content, and chemistry, affecting which pollinators visit and how often. Researchers realized that dried plant samples stored in museum collections for decades or centuries contain chemical clues about how this three-way relationship between plants, pollinators, and microbes has changed as humans altered the environment.
Key Findings
Floral nectar hosts a microbial community (bacteria and yeasts) that actively mediates plant-pollinator interactions, making pollination a tripartite rather than bipartite process.
Anthropogenic changes — including habitat loss, pesticide use, and climate change — disrupt these plant-pollinator-microbe interactions across time, geography, and species.
Herbarium specimens offer a previously underutilized historical archive that can reveal long-term trends in how these tripartite pollination relationships have responded to human-driven change.
chevron_right Technical Summary
Pollination is not just a two-way relationship between flowers and bees — microbes living in floral nectar play a crucial third role. Scientists are now using century-old pressed plant specimens in museum herbaria to track how this three-way relationship has shifted as humans have changed the landscape.
Abstract Preview
Pollination involves plants, pollinators, and microorganisms, challenging the traditional bipartite understanding. Floral nectar is the primary medium where tripartite plant-pollinator-microbe inte...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Urban Tree Canopy Reduces Heat-Related Mortality by 39% in European Cities
Trees in your local park or street aren't just pretty — they are literally keeping people alive during heatwaves, and planting even a modest number of the ri...
Climate adaptation in plants refers to the physiological and evolutionary mechanisms through which plants adjust to changing environmental conditions, including temperature shifts, altered precipitation patterns, and seasonal variations. Understanding these processes is essential for plant science
arrow_forward Explore topic