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Plant galls induced by insects: Coordinated developmental reprogramming and defence manipulation.

Yan Ma¹, Zeynep Begüm Şen², Hing Pan Ng²

¹Gregor Mendel Institute of Molecular Plant Biology, Dr. Bohr-Gasse 3, 1030, Vienna, Austria.

Current Opinion in Plant Biology

|July 17, 2025

Summary

Insect-induced galls showcase plant developmental reprogramming and defense compromises. This review explores their unique morphology, ecology, and potential for discoveries in plant biology and evolutionary ecology.

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Area of Science:

Plant developmental biology
Evolutionary ecology
Insect-plant interactions

Background:

Insect-induced galls are striking examples of plant developmental reprogramming.
They involve de novo organogenesis and altered plant defense mechanisms.
Gall development is synchronized with insect growth, creating nutritive and protective environments.

Purpose of the Study:

To review recent findings on insect-induced galls.
To examine their defining features compared to other plant-associated organisms.
To highlight the potential of galls for future biological discoveries.

Main Methods:

Literature review of recent findings on insect-induced galls.
Comparative analysis of insect galls versus non-gall herbivores, microbial inducers, and symbionts.
Exploration of commonalities and differences in developmental reprogramming, defense, and nutrition.

Main Results:

Insect-induced galls exhibit unique morphological diversity shaped by ecological niches.
Comparison reveals distinct strategies in developmental reprogramming, defense, and nutrition.
Galls represent a specialized interaction distinct from other herbivory or symbiosis.

Conclusions:

Insect-induced galls are a unique system for studying plant development and defense.
Their evolutionary diversity offers insights into plant-insect interactions.
Further research on galls can advance developmental biology, plant defense, and evolutionary ecology.