Genetic loci mediating circadian clock output plasticity and crop productivity under barley domestication.

Autor: Prusty MR; Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 5025001, Israel., Bdolach E; Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 5025001, Israel.; Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva, Israel., Yamamoto E; Kazusa DNA Research Institute, PO Box 292-0818, Chiba, Japan., Tiwari LD; Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 5025001, Israel., Silberman R; Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 5025001, Israel., Doron-Faigenbaum A; Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 5025001, Israel., Neyhart JL; Department of Agronomy and Plant Genetics, University of Minnesota, St Paul, MN, 55108, USA., Bonfil D; Gilat Center, Vegetables and Field Crops, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 5025001, Israel., Kashkush K; Department of Life Sciences, Ben-Gurion University, PO Box 653, Beer-Sheva, Israel., Pillen K; Institute of Agricultural and Nutritional Sciences, Martin-Luther University Halle-Wittenberg, PO Box 06120, Halle (Saale), Germany., Smith KP; Department of Agronomy and Plant Genetics, University of Minnesota, St Paul, MN, 55108, USA., Fridman E; Institute of Plant Sciences, Agricultural Research Organization (ARO), The Volcani Center, PO Box 6, Bet Dagan, 5025001, Israel.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2021 Jun; Vol. 230 (5), pp. 1787-1801. Date of Electronic Publication: 2021 Mar 31.
DOI: 10.1111/nph.17284
Abstrakt: Circadian clock rhythms are shown to be intertwined with crop adaptation. To realize the adaptive value of changes in these rhythms under crop domestication and improvement, there is a need to compare the genetics of clock and yield traits. We compared circadian clock rhythmicity based on Chl leaf fluorescence and transcriptomics among wild ancestors, landraces, and breeding lines of barley under optimal and high temperatures. We conducted a genome scan to identify pleiotropic loci regulating the clock and field phenotypes. We also compared the allelic diversity in wild and cultivated barley to test for selective sweeps. We found significant loss of thermal plasticity in circadian rhythms under domestication. However, transcriptome analysis indicated that this loss was only for output genes and that temperature compensation in the core clock machinery was maintained. Drivers of the circadian clock (DOC) loci were identified via genome-wide association study. Notably, these loci also modified growth and reproductive outputs in the field. Diversity analysis indicated selective sweep in these pleiotropic DOC loci. These results indicate a selection against thermal clock plasticity under barley domestication and improvement and highlight the importance of identifying genes underlying for understanding the biochemical basis of crop adaptation to changing environments.
(© 2021 The Authors New Phytologist © 2021 New Phytologist Foundation.)
Databáze: MEDLINE
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