Molecular Markers Mediated Heat Stress Tolerance in Crop Plants

Abstract

AbstractPlants’ developmental and growth rates can be influenced by temperature from seedling to maturity stage. Among the abiotic stress, heat stress has an impact on agronomic qualities at all phases of development; however, pre-flowering and anthesis stages are more vulnerable to high temperatures than post-flowering stages. As evident by massive yield losses in various food crops, the escalating adverse impacts of heat stress (HS) are putting the global food as well as nutritional security at great risk. In most of cereal crops, heat tolerance is a quantitative attribute that is influenced by a variety of genes and QTLs (quantitative trait loci). Attempts have been made over the last three decades to determine whether the condition under heat stress has been reviewed. Advances in molecular markers and quantitative genetics have made it possible to discover QTL that influence heat tolerance in cereal crop. Using various characteristics as indications of heat tolerance, many important QTL with significant effects on heat tolerance were discovered. There has been an increase in interest in using functional marker tools and technologies based on transcriptomics, proteomics, and metabolomics data to find and understand the molecular components of heat stress tolerance and the underlying mechanisms in recent years.KeywordsHeat stressMolecular markersQuantitative trait loci