Pulse Brain · Growing Health Evidence Index
Tier 4 — Narrative / commentaryPeer-reviewed

Plant Hormone Regulation of Competitive Growth: Implications for Agriculture and Inclusive Fitness

Jasmina Kurepa, Jan Smalle

Applied Biosciences · 2026

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Summary

This review proposes a functional framework for understanding plant hormones as mediators between competitive and cooperative growth strategies. The authors partition major plant hormones into two classes: those driving competitive resource acquisition (auxin, gibberellins, brassinosteroids) and those promoting growth restraint and communal defence (cytokinins, abscisic acid, strigolactones, ethylene, salicylic acid, jasmonate). This modular hormonal architecture potentially enables flexible adaptation to environmental and social contexts, with implications for agricultural hormone use and plant kin selection research.

UK applicability

The hormonal framework could inform UK crop breeding and agronomic management strategies that balance productivity with resource efficiency and plant defence. However, direct application to UK farming systems would require field validation under UK conditions and integration with existing soil and crop management practices.

Key measures

Functional classification of plant hormone roles in competitive versus cooperative behaviour based on evidence from developmental, ecological, and evolutionary studies

Outcomes reported

The paper classifies major plant hormones by their functional roles in balancing competitive growth with growth restraint and cooperation. It proposes that auxin, gibberellins, and brassinosteroids mediate competitive foraging, whilst cytokinins, abscisic acid, strigolactones, ethylene, salicylic acid, and jasmonate promote growth restraint and resource conservation.

Theme
Farming systems, soils & land use
Subject
Regenerative & agroecological farming
Study type
Narrative Review
Study design
Narrative review
Source type
Peer-reviewed study
Status
Published
System type
Laboratory / in vitro
DOI
10.3390/applbiosci5020024
Catalogue ID
SNmov0hb7d-omgbcj

Topic tags

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