Exogenous DA-6 Improves the Low Night Temperature Tolerance of Tomato Through Regulating Cytokinin

Jiazhi Lu; Jiazhi Lu; Jiazhi Lu; Pengxiao Guan; Pengxiao Guan; Pengxiao Guan; Jiamao Gu; Jiamao Gu; Jiamao Gu; Xiaolong Yang; Xiaolong Yang; Xiaolong Yang; Feng Wang; Feng Wang; Feng Wang; Mingfang Qi; Mingfang Qi; Mingfang Qi; Tianlai Li; Tianlai Li; Tianlai Li; Yufeng Liu; Yufeng Liu; Yufeng Liu

doi:10.3389/fpls.2020.599111

Frontiers in Plant Science (Feb 2021)

Exogenous DA-6 Improves the Low Night Temperature Tolerance of Tomato Through Regulating Cytokinin

Jiazhi Lu,
Jiazhi Lu,
Jiazhi Lu,
Pengxiao Guan,
Pengxiao Guan,
Pengxiao Guan,
Jiamao Gu,
Jiamao Gu,
Jiamao Gu,
Xiaolong Yang,
Xiaolong Yang,
Xiaolong Yang,
Feng Wang,
Feng Wang,
Feng Wang,
Mingfang Qi,
Mingfang Qi,
Mingfang Qi,
Tianlai Li,
Tianlai Li,
Tianlai Li,
Yufeng Liu,
Yufeng Liu,
Yufeng Liu

Affiliations

Jiazhi Lu: College of Horticulture, Shenyang Agricultural University, Shenyang, China
Jiazhi Lu: Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
Jiazhi Lu: Collaborative Innovation Center of Protected Vegetable Surrounds Bohai Gulf Region, Shenyang, China
Pengxiao Guan: College of Horticulture, Shenyang Agricultural University, Shenyang, China
Pengxiao Guan: Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
Pengxiao Guan: Collaborative Innovation Center of Protected Vegetable Surrounds Bohai Gulf Region, Shenyang, China
Jiamao Gu: College of Horticulture, Shenyang Agricultural University, Shenyang, China
Jiamao Gu: Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
Jiamao Gu: Collaborative Innovation Center of Protected Vegetable Surrounds Bohai Gulf Region, Shenyang, China
Xiaolong Yang: College of Horticulture, Shenyang Agricultural University, Shenyang, China
Xiaolong Yang: Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
Xiaolong Yang: Collaborative Innovation Center of Protected Vegetable Surrounds Bohai Gulf Region, Shenyang, China
Feng Wang: College of Horticulture, Shenyang Agricultural University, Shenyang, China
Feng Wang: Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
Feng Wang: Collaborative Innovation Center of Protected Vegetable Surrounds Bohai Gulf Region, Shenyang, China
Mingfang Qi: College of Horticulture, Shenyang Agricultural University, Shenyang, China
Mingfang Qi: Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
Mingfang Qi: Collaborative Innovation Center of Protected Vegetable Surrounds Bohai Gulf Region, Shenyang, China
Tianlai Li: College of Horticulture, Shenyang Agricultural University, Shenyang, China
Tianlai Li: Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
Tianlai Li: Collaborative Innovation Center of Protected Vegetable Surrounds Bohai Gulf Region, Shenyang, China
Yufeng Liu: College of Horticulture, Shenyang Agricultural University, Shenyang, China
Yufeng Liu: Key Laboratory of Protected Horticulture of Education Ministry and Liaoning Province, Shenyang, China
Yufeng Liu: Collaborative Innovation Center of Protected Vegetable Surrounds Bohai Gulf Region, Shenyang, China

DOI: https://doi.org/10.3389/fpls.2020.599111
Journal volume & issue: Vol. 11

Abstract

Read online

Low night temperature (LNT) causes environmental stress and has a severe and negative impact on plant growth and productivity. Synthetic elicitors can regulate plant growth and induce defense mechanisms from this type of stress. Here, we evaluated the effect of the exogenous growth regulator diethyl aminoethyl hexanoate (DA-6) in tomato leaf response to LNT stress. Our results showed that exogenous DA-6 activates the expression of chlorophyll synthesis and photosystem-related genes, and results in higher photosynthetic activity and chlorophyll production. Furthermore, DA-6 can regulate the synthesis of endogenous cytokinin (CTK) and the expression of decomposition genes to stabilize chloroplast structure, reduce oxidative damage, and maintain the photochemical activity of tomato leaves under LNT stress. DA-6 maintains a high level of ABA content and induces the expression of CBF genes, indicating that DA-6 may participate in the cold response signaling pathway and induce the expression of downstream low temperature response genes and accumulation of compatible osmolytes. This study unravels a mode of action by which plant growth regulators can improve low temperature tolerance and provides important considerations for their application to alleviate the harmful effects of cold stress.

Published in Frontiers in Plant Science

ISSN: 1664-462X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Agriculture: Plant culture
Website: https://www.frontiersin.org/journals/plant-science

About the journal

Abstract

Keywords