Maize and heat stress: Physiological, genetic, and molecular insights

Ivica Djalovic; Sayanta Kundu; Rajeev Nayan Bahuguna; Ashwani Pareek; Ali Raza; Sneh L Singla-Pareek; P V Vara Prasad; Rajeev K Varshney

doi:10.1002/tpg2.20378

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Maize and heat stress: Physiological, genetic, and molecular insights

Journal article

Open access

Peer reviewed

Maize and heat stress: Physiological, genetic, and molecular insights

Ivica Djalovic, Sayanta Kundu, Rajeev Nayan Bahuguna, Ashwani Pareek, Ali Raza, Sneh L Singla-Pareek, P V Vara Prasad and Rajeev K Varshney

The plant genome, Vol.17(1), e20378

2023

DOI: https://doi.org/10.1002/tpg2.20378

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Abstract

Global mean temperature is increasing at a rapid pace due to the rapid emission of greenhouse gases majorly from anthropogenic practices and predicted to rise up to 1.5°C above the pre-industrial level by the year 2050. The warming climate is affecting global crop production by altering biochemical, physiological, and metabolic processes resulting in poor growth, development, and reduced yield. Maize is susceptible to heat stress, particularly at the reproductive and early grain filling stages. Interestingly, heat stress impact on crops is closely regulated by associated environmental covariables such as humidity, vapor pressure deficit, soil moisture content, and solar radiation. Therefore, heat stress tolerance is considered as a complex trait, which requires multiple levels of regulations in plants. Exploring genetic diversity from landraces and wild accessions of maize is a promising approach to identify novel donors, traits, quantitative trait loci (QTLs), and genes, which can be introgressed into the elite cultivars. Indeed, genome wide association studies (GWAS) for mining of potential QTL(s) and dominant gene(s) is a major route of crop improvement. Conversely, mutation breeding is being utilized for generating variation in existing populations with narrow genetic background. Besides breeding approaches, augmented production of heat shock factors (HSFs) and heat shock proteins (HSPs) have been reported in transgenic maize to provide heat stress tolerance. Recent advancements in molecular techniques including clustered regularly interspaced short palindromic repeats (CRISPR) would expedite the process for developing thermotolerant maize genotypes.

Details

Title: Maize and heat stress: Physiological, genetic, and molecular insights
Authors/Creators: Ivica Djalovic - Institute of Field and Vegetable Crops
Sayanta Kundu - National Agri-Food Biotechnology Institute
Rajeev Nayan Bahuguna - National Agri-Food Biotechnology Institute
Ashwani Pareek - National Agri-Food Biotechnology Institute
Ali Raza - Oil Crops Research Institute
Sneh L Singla-Pareek - International Centre for Genetic Engineering and Biotechnology
P V Vara Prasad - Kansas State University
Rajeev K Varshney - Murdoch University, Food Futures Institute
Publication Details: The plant genome, Vol.17(1), e20378
Publisher: Wiley Periodicals LLC on behalf of Crop Science Society of America.
Identifiers: 991005599167007891
Copyright: © 2023 The Authors.
Murdoch Affiliation: Centre for Crop and Food Innovation; State Agricultural Biotechnology Centre
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.4 Crop Science; 3.4.49 Plant Stress Responses
Web Of Science research areas: Genetics & Heredity; Plant Sciences
ESI research areas: Plant & Animal Science