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Int. J. Mol. Sci. 2018, 19(6), 1727; https://doi.org/10.3390/ijms19061727

Genome-Wide Identification and Characterization of Warming-Related Genes in Brassica rapa ssp. pekinensis

1
Department of Biological Sciences, Chungnam National University, Daejeon 34141, Korea
2
School of Agriculture, Yunnan University, Kunming 650091, China
3
Department of Life Science, Sogang University, Seoul 04107, Korea
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 11 May 2018 / Revised: 29 May 2018 / Accepted: 6 June 2018 / Published: 11 June 2018
(This article belongs to the Special Issue Plant Genomics)
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Abstract

For sustainable crop cultivation in the face of global warming, it is important to unravel the genetic mechanisms underlying plant adaptation to a warming climate and apply this information to breeding. Thermomorphogenesis and ambient temperature signaling pathways have been well studied in model plants, but little information is available for vegetable crops. Here, we investigated genes responsive to warming conditions from two Brassica rapa inbred lines with different geographic origins: subtropical (Kenshin) and temperate (Chiifu). Genes in Gene Ontology categories “response to heat”, “heat acclimation”, “response to light intensity”, “response to oxidative stress”, and “response to temperature stimulus” were upregulated under warming treatment in both lines, but genes involved in “response to auxin stimulus” were upregulated only in Kenshin under both warming and minor-warming conditions. We identified 16 putative high temperature (HT) adaptation-related genes, including 10 heat-shock response genes, 2 transcription factor genes, 1 splicing factor gene, and 3 others. BrPIF4, BrROF2, and BrMPSR1 are candidate genes that might function in HT adaptation. Auxin response, alternative splicing of BrHSFA2, and heat shock memory appear to be indispensable for HT adaptation in B. rapa. These results lay the foundation for molecular breeding and marker development to improve warming tolerance in B. rapa. View Full-Text
Keywords: warming; BrHSFA2; BrHSP18.2s; transcriptome; alternative splicing; Kenshin warming; BrHSFA2; BrHSP18.2s; transcriptome; alternative splicing; Kenshin
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Song, H.; Dong, X.; Yi, H.; Ahn, J.Y.; Yun, K.; Song, M.; Han, C.-T.; Hur, Y. Genome-Wide Identification and Characterization of Warming-Related Genes in Brassica rapa ssp. pekinensis. Int. J. Mol. Sci. 2018, 19, 1727.

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