Key Recent Papers
JG Bragg, MA Supple, RL Andrew, JO Borevitz Genomic variation across landscapes: insights and applications New Phytologist (2015)
Grabowski PP, Morris GP, Casler MD, Borevitz JO. Population genomic variation reveals roles of history, adaptation and ploidy in switchgrass. Mol Ecol. 2014 Jun (online)
Brown TB, Cheng R, Sirault XR, Rungrat T, Murray KD, Trtilek M, Furbank RT, Badger M, Pogson BJ, Borevitz JO. TraitCapture: genomic and environment modelling of plant phenomic data. Curr Opin Plant Biol. 2014 Apr (online)
Li Y, Cheng R, Spokas KA, Palmer AA, Borevitz JO. Genetic Variation for Life History Sensitivity to Seasonal Warming in Arabidopsis thaliana. Genetics. Feb 2014 (online)
Xu Zhang, Ron Hauss, Justin Borevitz. Natural Genetic Variation for Growth and Development Revealed by High-Throughput Phenotyping in Arabidopsis thaliana (G3 genetics Jan 2012) (Online)
Benjamin Brachi, Geoff Morris, Justin Borevitz. Genome Wide Association Studies in Plants: The missing heritability is in the field. Genome Biology, Oct 28, 2011. (online)
Li Y, Huang Y, Bergelson J, Nordborg M, Borevitz JO. Association Mapping of Local Climate Sensitive QTL in Arabidopsis thaliana. PNAS, Nov 15, 2010. (Online)
Full Pubmed Listing
NCBI: db=pubmed; Term=borevitz,justin[Author - Full]
A Genome-Wide Association Study of Non-Photochemical Quenching in response to local seasonal climates in Arabidopsis thaliana.
Plant Direct. 2019 May;3(5):e00138
Authors: Rungrat T, Almonte AA, Cheng R, Gollan PJ, Stuart T, Aro EM, Borevitz JO, Pogson B, Wilson PB
Field-grown plants have variable exposure to sunlight as a result of shifting cloud-cover, seasonal changes, canopy shading, and other environmental factors. As a result, they need to have developed a method for dissipating excess energy obtained from periodic excessive sunlight exposure. Non-photochemical quenching (NPQ) dissipates excess energy as heat, however, the physical and molecular genetic mechanics of NPQ variation are not understood. In this study, we investigated the genetic loci involved in NPQ by first growing different Arabidopsis thaliana accessions in local and seasonal climate conditions, then measured their NPQ kinetics through development by chlorophyll fluorescence. We used genome-wide association studies (GWAS) to identify 15 significant quantitative trait loci (QTL) for a range of photosynthetic traits, including a QTL co-located with known NPQ gene PSBS (AT1G44575). We found there were large alternative regulatory segments between the PSBS promoter regions of the functional haplotypes and a significant difference in PsbS protein concentration. These findings parallel studies in rice showing recurrent regulatory evolution of this gene. The variation in the PSBS promoter and the changes underlying other QTLs could give insight to allow manipulations of NPQ in crops to improve their photosynthetic efficiency and yield.
PMID: 31276082 [PubMed]