Abstract
Maize crop encounters a number of abiotic and biotic stresses which reduce the production and the productivity . Abiotic stresses such as drought are unpredicted environmental disturbances during the crop growth which often lead to reduced crop yield or complete crop loss in some cases. Drought occurring at flowering leads to greater yield losses than when it occurs at other developmental stages. Plant responses at various levels such as morphological, physiological , biochemical and molecular changes to cope up with the stress. It is very important to understand the genes involved in drought tolerance as well and their interactions to breed tolerant hybrids in maize. Transcriptome profiling is useful to understand the whole spectrum of genes expressed under drought condition. The assay will be useful to decipher the genes involved in specific pathways and with the help of in silico analyses, interactions of target genes can be studied. Several transcriptome studies have been carried out in maize in different stages and in tissues under drought stress . Genes involved in detoxification, stomatal regulation , photosynthesis, hormone signaling , root architecture and sugar metabolism pathways are considered as important to achieve drought tolerance . The genes identified through gene expression assays could be used as candidate genes in selection programmes to develop drought tolerant hybrids in maize.
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Singh, N., Mittal, S., Thirunavukkarasu, N. (2019). Effect of Drought Stress and Utility of Transcriptomics in Identification of Drought Tolerance Mechanisms in Maize. In: Rajpal, V., Sehgal, D., Kumar, A., Raina, S. (eds) Genetic Enhancement of Crops for Tolerance to Abiotic Stress: Mechanisms and Approaches, Vol. I. Sustainable Development and Biodiversity, vol 20. Springer, Cham. https://doi.org/10.1007/978-3-319-91956-0_4
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