Altered redox processes, defense responses, and flowering time are associated with survival of the temperate Camelina sativa under subtropical conditions

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Wang , S , Guo , P , Li , X , Wu , M , Overmyer , K , Liu , S & Cui , F 2020 , ' Altered redox processes, defense responses, and flowering time are associated with survival of the temperate Camelina sativa under subtropical conditions ' , Environmental and Experimental Botany , vol. 177 , 104132 . https://doi.org/10.1016/j.envexpbot.2020.104132

Title: Altered redox processes, defense responses, and flowering time are associated with survival of the temperate Camelina sativa under subtropical conditions
Author: Wang, Shunbin; Guo, Peng; Li, Xiaoxiao; Wu, Minggen; Overmyer, Kirk; Liu, Shenkui; Cui, Fuqiang
Contributor organization: Biosciences
Viikki Plant Science Centre (ViPS)
Plant-Fungal Interactions Group
Organismal and Evolutionary Biology Research Programme
Date: 2020-09
Language: eng
Number of pages: 7
Belongs to series: Environmental and Experimental Botany
ISSN: 0098-8472
DOI: https://doi.org/10.1016/j.envexpbot.2020.104132
URI: http://hdl.handle.net/10138/344544
Abstract: Sporadic and unpredictable extreme hot weather events associated with global warming have been an increasingly serious problem and are difficult to test under natural field conditions. In this study, we used subtropical summer to mimic extreme hot weather under realistic field conditions to test for heat tolerance in the cold-adapted emergent oil crop, Camelina sativa. Utilizing a forward genetic screen, Camelina was screened for heat-adapted genotypes, resulting in the identification of three subtropical summer tolerant (sst) mutants. The sst mutants were late flowering and exhibited altered expression of the key flowering genes FLOWER LOCUS C and FLOWER LOCUS T. With RNA-seq assay, it was found that redox and defense related genes were significantly enriched in the up-regulated genes of the sst mutants. Consistently, reduced hydrogen peroxide production and enhanced resistance to a fungal pathogen were observed. Overall, our results suggested that to breed temperate crops to adapt to the subtropics, flowering time, antioxidant ability, and defense signaling could be the potential targets.
Subject: Camelina sativa
Mutant breeding
Global warming
Subtropics
High temperature tolerance
Redox
Flowering time
Defense
SIGNALING PATHWAYS
BOTRYTIS-CINEREA
INCREASE
STRESS
GROWTH
CROP
1172 Environmental sciences
11831 Plant biology
Peer reviewed: Yes
Rights: cc_by_nc_nd
Usage restriction: openAccess
Self-archived version: acceptedVersion


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