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Volume 4, Issue 3 (Suppl) Adv Crop Sci Tech
ISSN: 2329-8863 ACST, an open access journal
Page 58
Notes:
Plant Genomics 2016
July 14-15, 2016
conferenceseries.com
July 14-15, 2016 Brisbane, Australia
4th International Conference on Plant Genomics
Reaping the benefits of genome sequence and re-sequence information for chickpea improvement
Mahendar Thudi1, Annapurna Chitikineni 1, Xin Liu1, Weiming He2, Manish Roorkiwal1, Wei Yang2, Jianbo Jian2, Dadakhalandar Doddamani1, Pooran M Gaur1,
Abhishek Rathore1, Srinivasan Samineni1, Rachit K Saxena1, Dawen Xu2, Narendra P Singh3, 4, Sushil K Chaturvedi4, Gengyun Zhang2, Jun Wang2, Swapan K
Datta5, Xun Xu 2 and Rajeev K Varshney1
1International Crops Research Institute for the Semi-Arid Tropics, India
2Beijing Genomics Institute, China
3All India Coordinated Research Project on Chickpea-ICAR, India
4Indian Institute of Pulses Research-ICAR, India
5Visva-Bharati University, India
C hickpea (Cicer arietinum L.) is one of the most important annual pulse crops cultivated by resource poor farmers across
the globe. Besides being the rich source of human dietary proteins, it improves the soil heath through symbiotic nitrogen
fixation. Globally it is cultivated on over 13.2 Mha with an annual production of 13.1 million tons and productivity is less
than 1 ton per ha much less than estimated potential of 6 t/ha under optimum growing conditions. In order to understand
the impact of breeding on genetic diversity and gain insights into temporal trends in diversity in chickpea, a set of 100
chickpea varieties released in 14 countries between 1948 and 2012 were re-sequenced. For analysis, the re-sequencing data
for 29 varieties available from an earlier study was combined and genome analysis was conducted for 129 genotypes. Linkage
disequilibrium decay was higher in landraces than in breeding lines. Re-sequencing of a large number of varieties has provided
opportunities to inspect the genetic and genomic changes reflecting the history of breeding, which we consider as breeding
signatures and the selected loci may provide targets for crop improvement. In addition, the analysis provided insights into
population structure, genetic diversity, gene loss, domestication and selection sweeps in this crop that is important for global
food security in developing countries.
Biography
Mahendar Thudi has obtained his PhD in Plant Sciences from University of Hyderabad, India. His seminal contribution includes genome sequences of chickpea,
molecular breeding products in chickpea, genetic resources like TILLING populations (in chickpea and pearl millet) and genomic resources like SSR markers,
genetic maps (in chickpea and pearl millet) and high-throughput DNA fingerprinting, genome diversity analysis, marker-trait associations and chickpea physical
map. His research articles (>40) are published in high-impact factor journals including, Nature Biotechnology, Scientific Reports, PLoS ONE, Theoretical and
Applied Genetics, etc. that are widely read and cited.
Mahendar Thudi et al., Adv Crop Sci Tech 2016, 4:3 (Suppl)