The Role of ERF and ACO Genes in the Response of Flax to Waterlogging Stress

Document Type : Original Article

Authors

1 PhD, Department of Genetics and Breeding, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.

2 Associate Professor, Department of Genetics and Breeding, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.

3 Assistant Professor, Tabarestan Agricultural Genetics and Biotechnology Research Institute, Agricultural Sciences and Natural Resources University of Sari, Sari, Iran.

Abstract

Flax (Linum usitatissimum)، holds a significant position among plants due to its versatile applications. It is found in various industries, including oil production and medicinal purposes. Therefore, it is a valuable medicinal and industrial plant. Like other plants, flax is susceptible to environmental stressors, with waterlogging stress being a prominent threat. Waterlogging stress occurs when excess water in the soil limits oxygen supply to plant roots, disrupting natural metabolic processes and causing damage. Understanding the genetic basis of flax's response to waterlogging stress is crucial.
Aim: Recent studies have identified specific genes and metabolic pathways involved in this response. Notably, the ERF (Ethylene Response Factor) and ACO (1-aminocyclopropane-1-carboxylate oxidase) genes play essential roles in regulating this response.
Materials and Methods: In our study, we grew two flax genotypes (sensitive and tolerant) in water-saturated soil (beyond Field Capacity) at different time intervals (0, 12, 24, 72 hours, and seven days) after waterlogging onset.
Findings: The gene expression patterns showed different responses between the genotypes. The ERF gene exhibited more fluctuations in the sensitive genotype, suggesting that the sensitive genotype experiences a higher degree of stress. On the other hand, the ACO gene showed different expression patterns between the two sampled genotypes.
Conclusion: These differences indicate distinct strategies for managing ethylene levels under waterlogging stress in these genotypes. Additionally, the regulation of ACO expression in these genotypes suggests a more controlled and potentially beneficial response to long-term waterlogging stress. Ethylene can have a significant effect as a vital hormone in response to plant stress.

Keywords

Genetics and Plant Breeding
Volume 1, Issue 1
April 2024
Pages 67-78

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