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Plant Breeding and Biotechnology

Plant Breeding and Biotechnology

Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.

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The TaMADS2-TaTBL21 Module Enhances Wheat Resistance to Stripe Rust by Activating TaGKL-Mediated Immunity.

Shijia Zhao¹, Hao Chu¹, Yanan Lu¹

¹College of Life Sciences, Henan Agricultural University, Zhengzhou, China.

Plant Biotechnology Journal

|November 29, 2025

Summary

This summary is machine-generated.

Researchers discovered a new wheat gene, TaMADS2, that boosts resistance to stripe rust disease. This gene works with TaTBL21 and TaGKL to activate defense mechanisms, offering new strategies for developing resistant wheat varieties.

Keywords:

MADS‐box Puccinia striiformis f. sp. tritici glycerol kinase resistance wheat wheat stripe rust

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Area of Science:

Plant Pathology
Molecular Biology
Agricultural Science

Background:

Wheat stripe rust (Puccinia striiformis f. sp. tritici, Pst) is a major threat to global food security.
The role of MADS-box transcription factors in plant immunity is not well understood.

Purpose of the Study:

To identify and characterize MADS-box genes involved in wheat resistance to Pst.
To elucidate the molecular mechanism by which TaMADS2 regulates wheat immunity.

Main Methods:

Gene identification and characterization (TaMADS2).
Functional analysis using gene overexpression and knockdown (RNAi).
Protein-protein interaction studies (TaMADS2-TaTBL21).
Gene expression analysis (TaGKL).
Measurement of defense metabolites (SA, G3P).

Main Results:

TaMADS2 was identified as a Pst-induced gene that positively regulates wheat resistance.
TaMADS2 overexpression enhanced resistance, while knockdown increased susceptibility.
TaMADS2 interacts with TaTBL21 to activate TaGKL expression.
TaGKL is crucial for resistance, as its silencing compromises defense.
The TaMADS2-TaTBL21-TaGKL module upregulates salicylic acid (SA) and glycerol-3-phosphate (G3P) for defense.

Conclusions:

A novel TaMADS2-TaTBL21-TaGKL signaling module enhances wheat resistance to stripe rust.
This module offers potential targets for breeding Pst-resistant wheat varieties.