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Related Experiment Video

Updated: May 31, 2026

A Workflow for the Quantitative Assessment of the Endophytic and Epiphytic Bacterial Microbiomes of the Bark of Populus trichocarpa

A Workflow for the Quantitative Assessment of the Endophytic and Epiphytic Bacterial Microbiomes of the Bark of Populus trichocarpa

Published on: June 27, 2025

Complexity of leaf surface texture affects microbial colonization in temperate forest tree species.

Waltraud X Schulze^1,2, Ernst-Detlef Schulze³, Susanne Reiße⁴

¹Department of Plant Systems Biology, University of Hohenheim, Stuttgart, Germany.

|May 29, 2026

Summary

Leaf surface texture complexity, a new quantitative trait, influences microbial colonization. Higher complexity reduces specialist microbes, pathogens, and lichenization, suggesting protective effects for trees.

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Area of Science:

Ecology
Plant Science
Microbiology

Background:

Tree leaves host diverse microorganisms, with colonization influenced by leaf traits.
Understanding these plant-microbe interactions is crucial for ecosystem dynamics.

Purpose of the Study:

To develop a quantitative trait for leaf surface texture complexity.
To assess the role of leaf surface texture complexity in microbial colonization and habitat preferences.
To investigate the protective effects of leaf surface complexity against pathogens and specialists.

Main Methods:

Developed a novel quantitative trait: leaf surface texture complexity score using scanning electron microscopy.
Correlated texture complexity with anatomical features (stomatal density, leaf orientation) and habitat indicators.
Analyzed colonization patterns of fungi and bacteria in relation to texture complexity.

Main Results:

Leaf surface texture complexity correlated with anatomical and habitat variables.
Increased texture complexity negatively correlated with specialist fungi and bacteria.
Higher texture complexity reduced pathogen colonization in broad-leaved species and lichenization in conifers.

Conclusions:

Leaf surface texture complexity is an underappreciated trait influencing plant-microbe interactions.
This trait may explain microbial diversity across tree species and offers insights into plant-microbe co-evolution.
Leaf surface traits show potential for forest management and disease resistance strategies.