The Effects of Acorn Origin, Environmental Microbiomes and Local Adaptation on the Leaf Metabolome.
Ramanathan C, Goris L, Mishra A, Lihavainen-Bag J, Pawlowski K
Climate Adaptation
It means the specific acorn or seed you plant — not just the soil or environment you provide — carries a hidden chemical identity that influences how the plant grows, which has real implications for choosing locally sourced seeds when planting trees in your garden or neighborhood.
Scientists grew young oak trees from acorns collected from different mother trees, then swapped the soil and airborne microbes around them to see what shaped the leaves' chemistry. They found that the acorn's origin — essentially its genetic heritage — had a bigger effect on leaf chemistry than the microbes in the surrounding environment. Plants also showed different chemistry when grown near their own mother tree versus a stranger tree nearby, hinting that oaks are subtly tuned to their home ground.
Key Findings
Leaf chemistry differed significantly based on acorn origin (which mother tree it came from), but not based on which soil or canopy microbiomes the seedling was exposed to.
Seedlings grown in their 'home' microbiome environment (from their own mother tree's soil and canopy) had measurably different leaf chemistry than those grown in 'away' environments from neighboring trees.
No clear relationship was found between visible plant traits like height and chlorophyll content and the broader leaf metabolome, suggesting chemistry and observable growth are decoupled.
chevron_right Technical Summary
A study on young oak seedlings found that where an acorn comes from — its genetic origin — shapes the leaf chemistry of the resulting plant more than the soil or airborne microbes in its environment. Seedlings also showed distinct chemistry when grown in their 'home' environment versus a neighboring tree's environment, suggesting local adaptation plays a measurable chemical role.
Abstract Preview
Plants are associated with microbial communities, which are inherited through the seed and acquired from the environment. These microbiomes influence plant physiology, chemistry, and functioning. Y...
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