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Open AccessArticle

Differential Metabolite Accumulation in Different Tissues of Gleditsia sinensis under Water Stress and Rehydration Conditions

by Jia Liu 1,2,3,*,†, Rui Kang 2,3,†, Yang Liu 2,4, Ke-Xin Wu 4, Xue Yan 2,3, Ying Song 2,3, Li-Ben Pan 2,3 and Zhong-Hua Tang 2,3
1
Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
2
Key Laboratory of Plant Ecology, Northeast Forestry University, Harbin 150040, China
3
College of Chemistry, Chemical Engineer and Resource Utilization, Northeast Forestry University, Harbin 150040, China
4
School of Forestry, Northeast Forestry University, Harbin 150040, China
*
Author to whom correspondence should be addressed.
These two authors contribute equally to this work.
Forests 2020, 11(5), 542; https://doi.org/10.3390/f11050542
Received: 29 March 2020 / Revised: 30 April 2020 / Accepted: 1 May 2020 / Published: 12 May 2020
(This article belongs to the Special Issue Abiotic and Biotic Stress in Forest and Plantation Trees)
Gleditsia sinensis Lam. is a woody species that can tolerate various drought conditions and has been widely used in all aspects of life, including medicine, food, cleaning products, and landscaping. However, few reports have focused on the regulatory mechanism of the drought response in G. sinensis. To understand the metabolic basis of the Gleditsia sinensis drought response, different tissues were subjected to a rehydration/dehydration treatment and subsequently analyzed using untargeted and targeted metabolomics profiling depending on gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-tandem mass (LC-MS) analytical platforms, respectively. Eight sugars, twelve amino acids, and twenty phenolic compounds were characterized. Metabolites showing a significant increase or decrease under drought stress were considered to be the key metabolites of interest for a better understanding of the drought tolerance mechanisms. The GC-MS-identified compounds were shown to undergo tissue-specific regulation in response to drought stress. Moreover, the C6C3C6 and C6C3 structures were identified by LC-MS as phenolic metabolites, which revealed their drought-response association. Significant physiological parameters were measured, including overall plant development, and the results showed that antioxidant systems could not be completely restored, but photosynthetic parameters could be recovered. The results of this research provide insight into biochemical component information mechanism of drought resistance in G. sinensis. View Full-Text
Keywords: chemical components; physiological; abiotic stress; GC-MS; LC-MS chemical components; physiological; abiotic stress; GC-MS; LC-MS
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Liu, J.; Kang, R.; Liu, Y.; Wu, K.-X.; Yan, X.; Song, Y.; Pan, L.-B.; Tang, Z.-H. Differential Metabolite Accumulation in Different Tissues of Gleditsia sinensis under Water Stress and Rehydration Conditions. Forests 2020, 11, 542.

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