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Redox‐engineering enhances maize thermotolerance and grain yield in the field

by St. Amand, Paul , Oliveira Garcia, Ely , Hu, Ying , Valent, Barbara , Sprague, Stuart A. , Hao, Yangfan , Hirschi, Kendal D. , Jagadish, SV Krishna , Steiner, Trevor , Jackson, David P. , Wu, Qingyu , Somayanda, Impa , Nakata, Paul A. , Park, Sunghun , Rieu, Ivo , Bergkamp, Blake , Liu, Sanzhen , Peterson, Morgan , Tamang, Tej Man , Peng, Zhao , Cheng, Ninghui , Yang, Jian , Bai, Guihua , Kakeshpour, Tayebeh , Park, Jungeun , White, Frank F.

in Abiotic stress / Abortion / Agricultural production / Analysis / Arabidopsis - genetics / Arabidopsis thaliana / biotechnology / Corn / Crop yield / Crop yields / Crops / Ectopic expression / Edible Grain - genetics / Enzymes / Fertility / field conditions / Gene expression / Genetic engineering / Genomes / Germination / Glutaredoxin / Grain / Grain industry / grain yield / Heat / Heat stress / Heat tolerance / maize / Ovules / Oxidation-Reduction / Plant reproduction / Pollen / pollen germination / Proteins / reproductive stage / Stress distribution / Temperature tolerance / Thermotolerance - genetics / Zea mays - genetics

2022

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Redox‐engineering enhances maize thermotolerance and grain yield in the field

2022

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Redox‐engineering enhances maize thermotolerance and grain yield in the field

2022

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Journal Article

Redox‐engineering enhances maize thermotolerance and grain yield in the field

St. Amand, Paul,

Oliveira Garcia, Ely,

Hu, Ying,

Valent, Barbara,

Sprague, Stuart A.,

Hao, Yangfan,

Hirschi, Kendal D.,

Jagadish, SV Krishna,

Steiner, Trevor,

Jackson, David P.,

Wu, Qingyu,

Somayanda, Impa,

Nakata, Paul A.,

Park, Sunghun,

Rieu, Ivo,

Bergkamp, Blake,

Liu, Sanzhen,

Peterson, Morgan,

Tamang, Tej Man,

Peng, Zhao,

Cheng, Ninghui,

Yang, Jian,

Bai, Guihua,

Kakeshpour, Tayebeh,

Park, Jungeun,

White, Frank F.

2022

Overview

Summary Increasing populations and temperatures are expected to escalate food demands beyond production capacities, and the development of maize lines with better performance under heat stress is desirable. Here, we report that constitutive ectopic expression of a heterologous glutaredoxin S17 from Arabidopsis thaliana (AtGRXS17) can provide thermotolerance in maize through enhanced chaperone activity and modulation of heat stress‐associated gene expression. The thermotolerant maize lines had increased protection against protein damage and yielded a sixfold increase in grain production in comparison to the non‐transgenic counterparts under heat stress field conditions. The maize lines also displayed thermotolerance in the reproductive stages, resulting in improved pollen germination and the higher fidelity of fertilized ovules under heat stress conditions. Our results present a robust and simple strategy for meeting rising yield demands in maize and, possibly, other crop species in a warming global environment.

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Publisher

John Wiley & Sons, Inc,John Wiley and Sons Inc

Subject

Abiotic stress

/ Abortion

/ Agricultural production

/ Analysis

/ Arabidopsis - genetics

/ Arabidopsis thaliana

/ biotechnology