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Zuo Y, Li B, Guan S, Jia J, Xu X, Zhang Z, Lu Z, Li X, Pang X. EuRBG10 involved in indole alkaloids biosynthesis in Eucommia ulmoides induced by drought and salt stresses. JOURNAL OF PLANT PHYSIOLOGY 2022; 278:153813. [PMID: 36179396 DOI: 10.1016/j.jplph.2022.153813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 09/02/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
Alkaloids are natural products with many important medicinal activities. To explore the mechanism of abiotic stress promoting alkaloid biosynthesis in Eucommia ulmoides, transcriptomic analysis and metabonomic analysis were used, virus-induced gene silencing (VIGS) lines of target gene were constructed. The results showed that drought and salt stress caused wilting and blackening of leaves, decreased chlorophyll level, and significantly induced MDA and relative conductivity. To resist the damage of stress to cells, the level of secondary metabolites such as alkaloids increased significantly with the extension of stress time. Transcriptomic results showed that, were. Six alkaloid related genes (AWGs) were gathered in five modules positively correlated with either salt stress or alkaloid contents by WGCNA. Results of GO and KEGG enrichment revealed that biosynthesis of alkaloid, especially indole alkaloid was induced, and degradation of alkaloid was inhibited under salt stress. Combining the results of transcriptome and metabolomics, it was suggested that EuRBG10 promotes the production of indole alkaloids and EuAMO5 inhibits the degradation of alkaloids, which may be the core mechanism of the indole alkaloid biosynthesis pathway (map00901) induced by salt stress. The results of these hub proteins were also consistent with the chordal graph of KEGG enrichment. Hub roles of EuRGB10 was checked in E. ulmoides by VIGS. Our findings provide a preliminary understanding of abiotic stress regulating secondary metabolites such as alkaloids, and propose hub genes that can be used to improve the level of bioactive components in medicinal plant.
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Affiliation(s)
- Yanjun Zuo
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Bairu Li
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Suixia Guan
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Jingyu Jia
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Xinjie Xu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Zilong Zhang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Zheng Lu
- Department of Biology, Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Xin Li
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, 471023, China; National Demonstration Center for Experimental Food Processing and Safety Education, Luoyang, 471000, China; Henan Engineering Research Center of Food Microbiology, Luoyang, 471023, China.
| | - Xinyue Pang
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China.
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Shi S, Guo K, Tong R, Liu Y, Tong C, Peng M. Online extraction–HPLC–FRAP system for direct identification of antioxidants from solid Du-zhong brick tea. Food Chem 2019; 288:215-220. [DOI: 10.1016/j.foodchem.2019.03.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 12/05/2018] [Accepted: 03/05/2019] [Indexed: 12/21/2022]
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Li L, Guo Y, Zhao L, Zu Y, Gu H, Yang L. Enzymatic Hydrolysis and Simultaneous Extraction for Preparation of Genipin from Bark of Eucommia ulmoides after Ultrasound, Microwave Pretreatment. Molecules 2015; 20:18717-31. [PMID: 26501242 PMCID: PMC6332333 DOI: 10.3390/molecules201018717] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 09/22/2015] [Accepted: 10/12/2015] [Indexed: 11/16/2022] Open
Abstract
A continuous process based on the combination of ultrasounds and/or microwaves pretreatments followed by enzymatic hydrolysis and simultaneous extraction (EHSE) has been proposed to recover genipin from Eucommia ulmoides bark. At first, in the pretreatment step, the mixture of 1.0 g dried bark powder and 10 mL deionized water were irradiated by microwave under 500 W for 10 min. Then, in hydrolysis step, the optimal conditions were as follows: 0.5 mg/mL of cellulase concentration, 4.0 pH of enzyme solution, 24 h of incubation time and 40 °C of incubation temperature. After incubation, 10 mL ethanol was added to extract genipin for 30 min by ultrasound. After EHSE treatment, the yield of genipin could reach 1.71 μmol/g. Moreover, scanning electron micrographs illustrated that severe structural disruption of plant was obtained by EHSE. The results indicated that the EHSE method provided a good alternative for the preparation of genipin from Eucommia ulmoides bark as well as other herbs.
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Affiliation(s)
- Lili Li
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
- State Engineering Laboratory for Bioresource Eco-Utilization, Northeast Forestry University, Harbin 150040, China.
| | - Yupin Guo
- College of Animal Science and Technology, Hebei North University, Zhangjiakou 075000, China.
| | - Lianfei Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
- State Engineering Laboratory for Bioresource Eco-Utilization, Northeast Forestry University, Harbin 150040, China.
| | - Yuangang Zu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
- State Engineering Laboratory for Bioresource Eco-Utilization, Northeast Forestry University, Harbin 150040, China.
| | - Huiyan Gu
- School of Forestry, Northeast Forestry University, Harbin 150040, China.
| | - Lei Yang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
- State Engineering Laboratory for Bioresource Eco-Utilization, Northeast Forestry University, Harbin 150040, China.
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