MAP kinases and stomatal regulation: current updates and future perspectives.
Ding M, Zeng H, Takahashi Y, Kinoshita T, Ding H
Plant Signaling
Understanding how plants open and close their leaf pores could lead to crops that use water more efficiently — meaning more food security even as droughts become more frequent and severe.
Plants have tiny pores on their leaves called stomata that open to take in carbon dioxide and close to conserve water. Inside the plant, a chain of signaling proteins acts like a messenger relay, telling those pores when to open or shut based on heat, drought, or other stresses. By mapping out how this relay works across different plant species — from garden weeds to grasses to trees — researchers are finding new targets for breeding crops that can handle tough climate conditions.
Key Findings
MAPK signaling cascades act as a central hub integrating both internal plant signals and external environmental cues to control stomatal behavior
These molecular pathways play dual roles — governing both how stomata physically develop during plant growth and how they dynamically open and close in response to stress
The findings extend across multiple plant groups including Arabidopsis (a model plant), grasses (which include major food crops like wheat and rice), and woody species (trees and shrubs)
chevron_right Technical Summary
Scientists are uncovering how plants use a molecular relay system called MAPK cascades to control tiny pores on their leaves, helping plants manage water loss and respond to environmental stress. This knowledge could help breed crops that survive droughts and climate extremes more effectively.
Abstract Preview
Stomata are essential structures for gas exchange and water regulation in plants. Their development and movement are controlled by complex signaling networks. The mitogen-activated protein kinase (...
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