Role of abiotic stress responsive miRNAs in Arabidopsis root development
- PDF / 641,408 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 18 Downloads / 213 Views
REVIEW ARTICLE
Role of abiotic stress responsive miRNAs in Arabidopsis root development Archita Singh1,2 • Nidhi Gandhi1 • Vishnu Mishra1 • Sandeep Yadav1 • Vandna Rai2 • Ananda K. Sarkar1 Received: 10 September 2020 / Accepted: 14 October 2020 Ó Society for Plant Biochemistry and Biotechnology 2020
Abstract Abiotic stresses like drought, extreme temperature, and lack of sufficient water or nutrients adversely affect plant growth and productivity. The physiological responses of higher plants to the environmental stresses are largely influenced by the root system, which can quickly modulate its developmental pattern under changing water, nutrient, and temperature, as an adaptive response. Protein coding genes, phytohormones and microRNAs (miRNAs) are among the key players which imparts crucial intrinsic role in shaping the root development and its environment adaptive growth pattern. Among these factors, miRNAs belong to a class of small non-coding RNAs of 21–24 nucleotides in length, which regulates various aspects of plant growth and development by negatively regulating their target genes through either transcriptional cleavage or translational inhibition. Although many miRNAs have been identified to be differentially regulated under various abiotic stress conditions, only a limited number of them have been characterized, due to the complex nature of its regulation. However, some of the miRNAs, such as miR156, miR165/166, miR169 etc., have recently been shown to be involved in both abiotic stress response and root development, indicating the diverse role of miRNA mediated gene regulation. The field of miRNA mediated gene regulation is dynamically expanding and more miRNAs are being characterized for their function. Current review focuses on miRNAs that are differentially regulated by major abiotic stresses as well as are involved in root development in Arabidopsis thaliana. We highlight their role in regulation of multiple and diverse aspects of developmental and physiological processes in Arabidopsis. Keywords Root development miRNAs Arabidopsis Abiotic stresses Abbreviations PR Primary root LR Lateral root AR Adventitious root SCN Stem cell niche QC Quiescent centre RSA Root system architecture miRNA microRNA
& Ananda K. Sarkar [email protected] 1
National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India
2
National Institute for Plant Biotechnology, LBS Building Pusa Campus, New Delhi 110012, India
Introduction Factors like water, temperature, and the abundance of organic and inorganic components in the soil largely influence plant growth and development. Recent reports have warned about the changing climatic conditions and its adverse effect on plant growth and productivity (Intergovernmental Panel Climate Change (IPCC) 2007). Among different plant organs, roots are quintessential for robust plant growth since they are primarily responsible for providing anchorage to the plant, water and nutrient absorption and sense complex physiochemical properties of the soil.
Data Loading...
