Mechanism of cotton resistance to abiotic stress, and recent research advances in the osmoregulation related genes

Abstract

Abiotic stress is an important factor affecting the normal growth and development of plants and crop yield. To reduce the impact of abiotic adversity on cotton growth and development, the material basis of cotton resistance and its physiological functions are analyzed at the molecular level. At the same time, the use of genetic engineering methods to recombine resistance genes has become a hot spot in cotton resistance research. This paper provides an overviews of the resistance mechanism of cotton against the threat of non-biological adversity, as well as the research progress of osmoregulation-related genes, protein-acting genes, and transcription regulatory factor genes in recent years, and outlines the explored gene resources in cotton resistance genetic engineering, with the aim to provide ideas and reference bases for future research on cotton resistance.

Potassium ameliorates cotton (Gossypium hirsutum L.) fiber length by regulating osmotic and K+/Na+ homeostasis under salt stress

“…Salt stress can inhibit the growth of cotton roots and affect the absorption of K + , resulting in cotton nutrient imbalance (Saud & Wang, 2022). Selective potassium transport in the roots can maintain a higher K + /Na + content in the leaves, an important characteristic of the salt tolerance of cotton (Armengaud et al, 2009).…”

Cotton fiber as a model for understanding shifts in cell development under domestication

“…Additionally, there is practical interest in understanding cotton fiber development in the context of a changing environment. As with most crops, cotton yield (i.e., boll production and retention) can be negatively influenced by climatic factors, including changes in heat accumulation and fluctuations in other abiotic stressors (Sawan, 2017a, Ullah et al, 2017Sawan, 2017b;Kukal and Irmak, 2018;Saud and Wang, 2022;Sihi et al, 2022). Importantly, recent research suggests that environment plays a stronger role than genotype in determining agronomically fiber properties (e.g., yield, length, and uniformity) among elite lines of G. hirsutum (Raper et al, 2019).…”

Applications of Virus-Induced Gene Silencing in Cotton

“…Abiotic stresses, such as drought, soil salinity and alkalinity, and extreme temperature stresses, can induce a series of physiological and biochemical reactions and inhibit the normal growth and development of plants [ 41 , 42 , 43 ]. VIGS has been widely used to study gene function in cotton under abiotic stress ( Table 1 ).…”

“…An appropriate salt concentration can serve as a nutritional component to promote cotton growth. However, a high salt concentration results in the early maturity or senescence of leaves, leading to a decrease in cotton yield [ 43 ]. The usefulness of VIGS in studying cotton salt stress resistance has also been confirmed.…”