Plant & Animal Genomes XVII Conference Plant & Animal Genomes XVII ConferenceJanuary 10-14, 2009
Town & Country Convention Center
San Diego, CA
Nese Sreenivasulu , Vokkaliga Harshavardhan , Kalladan Rajesh , Christiane Seiler , Hardy Rolletschek , Marion Röder , Ulrich Wobus
In our ongoing efforts we developed large scale EST resources [1] and throughput gene expression profiling platforms in barley [2-4], which have brought substantial progress in elucidating biochemical pathways of barley seed metabolism in barley [5-6]. Recently we explored natural genetic variation among (i) elite breeding material (ii) introgression line populations with wild barley accessions as donors in an attempt to understand mechanisms of reaching enhanced yield stability and uncompromised seed quality under drought stress during seed filling. Barley lines depicting contrasting differences for differential drought responses has been employed to investigate transcriptional and metabolic networks during grain development, to enable the identification of favourable alleles and regulatory networks underlying improved performance under drought. Also examples of GMO modification for identified key regulators influencing improved yield under terminal drought will be highlighted. In summary, these complex molecular mechanisms of tackling tolerance to drought seen in the lime light of yield stability are expected to shed important information for breeding strategies.
[1] Zhang et al., The Plant Journal 40: 276-290, 2004.
[2] Sreenivasulu et al., Plant Physiology 146: 1738-1758, 2008.
[3] Sreenivasulu et al., The Plant Journal 47: 310-327, 2006.
[4] Sreenivasulu et al., The Plant Journal 37: 539-553, 2004.
[5] Sreenivasulu et al., International Journal of Plant Genomics 486258,1-13, 2008.
[6] Neuberger et al., Plant Biotechnology Journal, 6: 31-45, 2008.