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(stomata are pores in the leaf surface that provide for the exchange of gases) and
reduced stomatal density likely led to the reduced photosynthetic rates observed in
symptomatic leaves, found the study. "BLD, likely in combination with other foliar
pathogens and canopy thinning, causes a reduction in carbon assimilation capacity, which
can potentially lead to tree mortality by depleting the trees' stored carbon," the study's
authors concluded.
This information will further research on the disease, which is still in its early stages.
"We hope this leads to a better understanding of what the disease is doing to the tree
and enable others to use that information to come up with new strategies to manage the
disease," Brodersen said. The study was co-authored by YSE Ph.D. students Aleca
Borsuk, Ana Fanton, and Joseph Zailaa; recent graduate Jennifer Richburg, and Kate M.
Johnson.
More information: Leila R. Fletcher et al, Anatomical and physiological consequences of
beech leaf disease in Fagus grandifolia L., Forest Pathology (2023). DOI:
10.1111/efp.12842
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