Currently, escalating global warming and extreme weather events present crops with abiotic stresses such as high temperatures, freezing conditions, drought, waterlogging, and high salinity. These conditions disrupt plant growth and development, reducing crop yields and quality. Plants can adjust their physiological status or structure and enhance stress resistance by regulating the expression of stress-related genes in response to stress signals. As such, deciphering the biological functions of abiotic stress response networks and genes in crops holds remarkable importance for optimizing crop yield and quality.

This special issue delves into the crucial genes and networks linked with abiotic stress through multi-omics analysis, shedding light on the molecular dynamics of gene regulation in response to abiotic stress. Two primary research aspects covered are: (1) Detecting abiotic stress genes or regulatory networks in crops using techniques like metabolomics, phenomics and ionomics (nutrients), transcriptomics, proteomics, protein phosphorylation, epigenetics (methylation, histone methylation, miRNA, lncRNA, etc.), and GWAS, and (2) Applying molecular biology techniques, such as genetic modification and molecular interaction in the study of crop's abiotic stress mechanisms.

Primarily, the investigations in this special issue encompass the use of numerous omics or molecular biology methodologies to comprehend the regulation mechanisms of crop abiotic stresses, including high and low-temperature stress, drought stress, flood stress, salt stress, metal stress, nutrient stress, air pollution, light oxidation stress, and cross-stress. To elucidate abiotic stress-related genes and dissect the molecular mechanisms of their regulating pathways belonging to abiotic stresses.

• Omics Analysis of Abiotic Stress: Investigate key genes and regulatory networks related to abiotic stress in crops using advanced techniques like metabolomics, phenomics and ionomics (nutrients), transcriptomics, proteomics, protein phosphorylation, epigenetics, or GWAS.
• Molecular Mechanisms: Utilize molecular biology techniques such as gene modification and molecular interaction to study mechanisms of crop abiotic stress.
• Regulation of Crop Abiotic Stress: Study the regulation mechanisms of various abiotic stresses in crops using multiple omics or molecular biological methods.
• Exploration of Stress-related Genes: Identify and analyze the molecular regulation mechanism of genes related to abiotic stress.
• Biological Functions of Stress Response: Examine the biological functions of crop abiotic stress response networks and genes, understanding their significance in yield improvement and stabilization and enhancing crop quality.

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Frontiers in Genetics

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