Two Triacylglycerol Lipases Are Negative Regulators of Chilling Stress Tolerance in Arabidopsis

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dc.contributor.authorWang, Lang
dc.contributor.authorQian, Bilian
dc.contributor.authorZhao, Lei
dc.contributor.authorLiang, Ming-Hua
dc.contributor.authorZhan, Xiangqiang
dc.contributor.authorZhu, Jianhua
dc.date.accessioned2023-10-26T15:15:08Z
dc.date.available2023-10-26T15:15:08Z
dc.date.issued2022-03-21
dc.description.abstractCold stress is one of the abiotic stress conditions that severely limit plant growth and development and productivity. Triacylglycerol lipases are important metabolic enzymes for the catabolism of triacylglycerols and, therefore, play important roles in cellular activities including seed germination and early seedling establishment. However, whether they play a role in cold stress responses remains unknown. In this study, we characterized two Arabidopsis triacylglycerol lipases, MPL1 and LIP1 and defined their role in cold stress. The expression of MPL1 and LIP1 is reduced by cold stress, suggesting that they may be negative factors related to cold stress. Indeed, we found that loss-of-function of MPL1 and LIP1 resulted in increased cold tolerance and that the mpl1lip1 double mutant displayed an additive effect on cold tolerance. We performed RNA-seq analysis to reveal the global effect of the mpl1 and lip1 mutations on gene expression under cold stress. The mpl1 mutation had a small effect on gene expression under both under control and cold stress conditions whereas the lip1 mutation caused a much stronger effect on gene expression under control and cold stress conditions. The mpl1lip1 double mutant had a moderate effect on gene expression under control and cold stress conditions. Together, our results indicate that MPL1 and LIP1 triacylglycerol lipases are negative regulators of cold tolerance without any side effects on growth in Arabidopsis and that they might be ideal candidates for breeding cold-tolerant crops through genome editing technology.
dc.description.urihttps://doi.org/10.3390/ijms23063380
dc.identifierhttps://doi.org/10.13016/dspace/bopd-fduz
dc.identifier.citationWang, L.; Qian, B.; Zhao, L.; Liang, M.-H.; Zhan, X.; Zhu, J. Two Triacylglycerol Lipases Are Negative Regulators of Chilling Stress Tolerance in Arabidopsis. Int. J. Mol. Sci. 2022, 23, 3380.
dc.identifier.urihttp://hdl.handle.net/1903/31134
dc.language.isoen_US
dc.publisherMDPI
dc.relation.isAvailableAtCollege of Agriculture & Natural Resourcesen_us
dc.relation.isAvailableAtPlant Science & Landscape Architectureen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectcold stress
dc.subjecttriacylglycerol lipases
dc.subjectchilling stress tolerance
dc.subjectArabidopsis
dc.titleTwo Triacylglycerol Lipases Are Negative Regulators of Chilling Stress Tolerance in Arabidopsis
dc.typeArticle
local.equitableAccessSubmissionNo

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