The Foxtail Millet Genome pp 85-104 | Cite as
Genetic Determinants of Abiotic Stress Tolerance in Foxtail Millet
Abstract
Foxtail millet is one of the most important C4 Panicoid crops known for its small genome size (~490 Mb), short life cycle, inbreeding nature, and remarkable abiotic stress tolerance properties. It is a widely-grown food and fodder crop in the dry and semi-arid regions of Asia and Africa, including North China and India. Setaria italica (cultivated) and Setaria viridis (wild) are two widely known species of Setaria genus that serve as excellent model systems for evolutionary, architectural, and physiological studies in related potential bioenergy Panicoid grasses such as switch grass, napier grass, and pearl millet. Foxtail millet is rich in genetic diversity, with several core and mini core collections of its diverse germplasm. There are significant phenotypic variations that provide scope for association mapping and allele mining of new variants of abiotic stress tolerance that could be effectively utilized for crop improvement. Several of the foxtail millet accessions could also be abiotic stress tolerant particularly to drought and salinity, and exploiting their agronomic and stress tolerant traits could be particularly important for marker-assisted selection and genetic engineering. Furthermore, with the release and availability of the foxtail millet genome sequence, several of its distinctive attributes, including abiotic stress tolerance, have been discovered that may help in a better understanding of its evolution, stress physiology, and adaptation. The foxtail millet genome sequence thus not only helps toward identification and introgression of agronomically important traits but also helps in deciphering the abiotic stress tolerance mechanisms of this exceptionally stress tolerant crop and is also useful in developing climate resilient crops which are very crucial in this era of global climate change.
Notes
Acknowledgements
Charu Lata acknowledges INSPIRE Faculty Award [IFA-11LSPA-01] from Department of Science & Technology (DST), GoI, New Delhi. She is also thankful to the Director, CSIR-National Botanical Research Institute, Lucknow, India for providing facilities and support to conduct research in millet genomics.
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