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Tang Q, Chen Y, Jiang L, Chen J, Li C, Zeng W, Liu Q, Li P. Characterization and mechanism of seed dormancy in Symplocos paniculata. FRONTIERS IN PLANT SCIENCE 2024; 14:1322238. [PMID: 38259922 PMCID: PMC10801264 DOI: 10.3389/fpls.2023.1322238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/18/2023] [Indexed: 01/24/2024]
Abstract
Symplocos paniculata is a highly desirable oil species for biodiesel and premium edible oil feedstock. While germplasm preservation and breeding are crucial, the severity of seed dormancy poses a challenge to successful germination. We employed S. paniculata seeds as experimental materials and conducted an investigation into the types and causes of seed dormancy by analyzing the morphology and developmental characteristics of its embryo, exploring the water permeability property of the endocarp, and examining the presence of endogenous inhibitors, aiming to establish a theoretical foundation for overcoming seed dormancy and maximizing germplasm resource utilization. The findings revealed that the seed embryo had matured into a fully developed embryo, and no dormancy in terms of embryo morphology was observed. Upon reaching maturity, the endocarp of seeds undergoes significant lignification, resulting in notable differences in water absorption between cracked and intact seeds. The impermeability of the endocarp is one of the factors contributing to mechanical restriction. The different phases of endosperm extraction exerted varying effects on the germination of Chinese cabbage seeds, with the methanol phase exhibiting the most potent inhibitory effect. The presence of endogenous inhibitors emerged as the primary factor contributing to physiological dormancy in seeds. GC-MS analysis and validation trials revealed that fatty acids and phenolics, including hexadecanoic acid, oxadecanoic acid, and m-cresol, constituted the main types of endogenous inhibitory compounds found within the endosperm. These findings suggest that the seed dormancy in S. paniculata seeds has endocarp mechanical restriction, and the presence of endogenous inhibitors causes physiological dormancy.
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Affiliation(s)
- Qiaoyu Tang
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, China
| | - Yunzhu Chen
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, China
| | - Lijuan Jiang
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
| | - Jingzhen Chen
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, China
| | - Changzhu Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, China
| | - Wenbin Zeng
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
| | - Qiang Liu
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
| | - Peiwang Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, China
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Gurgul A, Nauman MC, Wu Z, Shetye G, Ma R, Youn I, Souliya O, Bisson J, Johnson JJ, Che CT. Chemical constituents of the stem of Marsypopetalum modestum and their bioactivities. Nat Prod Res 2023; 37:3623-3630. [PMID: 35819993 PMCID: PMC9834434 DOI: 10.1080/14786419.2022.2097229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/12/2022] [Accepted: 06/21/2022] [Indexed: 01/14/2023]
Abstract
Phytochemical investigation of Marsypopetalum modestum (Annonaceae) led to the isolation of a new phenylpropanoid glycoside, lyciumphenylpropanoid B (10), along with nine known compounds (1-9) from an aqueous methanolic extract of the stem. Most compounds are reported from this genus for the first time. The structures of the isolated compounds were elucidated using spectroscopic methods including NMR spectroscopy, high-resolution mass spectrometry, and quantum chemical electronic circular dichroism (ECD) calculations. Cytotoxic and antitubercular activities of several isolated compounds were evaluated. Dipyrithione (1) displayed anti-mycobacterial (MIC = 0.23 μM) and cytotoxic (IC50 = 0.8 μM in Hep G2 cells; 4.1 μM in HCT 116 cells) activities. Kelampayoside A (8) showed moderate cytotoxic activity against cancer cells.
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Affiliation(s)
- Aleksandra Gurgul
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, 60612, IL, United States
| | - Mirielle C Nauman
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, 60612, IL, United States
| | - Zhenlong Wu
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Gauri Shetye
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, 60612, IL, United States
| | - Rui Ma
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, 60612, IL, United States
| | - Isoo Youn
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, 60612, IL, United States
| | | | - Jonathan Bisson
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, 60612, IL, United States
| | - Jeremy J Johnson
- Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, 60612, IL, United States
| | - Chun-Tao Che
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, 60612, IL, United States
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Yan J, Hao M, Han Y, Ruan J, Zheng D, Sun F, Cao H, Hao J, Zhang Y, Wang T. Sesquiterpenes From Oplopanax elatus Stems and Their Anti-Photoaging Effects by Down-Regulating Matrix Metalloproteinase-1 Expression via Anti-Inflammation. Front Chem 2021; 9:766041. [PMID: 34805098 PMCID: PMC8600134 DOI: 10.3389/fchem.2021.766041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/11/2021] [Indexed: 11/23/2022] Open
Abstract
In the process of continuing to investigate ultraviolet b (UVB) irradiation protective constituents from Oplopanax elatus stems, nine new sesquiterpenes, named as eurylosesquiterpenosides A–D (1–4), eurylosesquiterpenols E–I (5–9), and ten known ones (10–19) were gained. Their structures were established by analysis of their NMR spectroscopic data, and electronic circular dichroism calculations were applied to define their absolute configurations. In addition, UVB induced HaCaT cells were used to study their anti-photoaging activities and mechanism. The results consolidated that compounds 7, 11, and 14 could improve the survival rate of HaCaT cells in concentration dependent manner at 10, 25, and 50 μM. Furthermore, western blot assay suggested that all of them could inhibit the expression of matrix metalloproteinase-1 (MMP-1), and increase the level of type I collagen markedly. Compounds 11 and 14 could reduce the phosphorylation of extracellular signal-regulated kinase and p38, respectively. Besides, compounds 7, 11, and 14 could significantly down-regulate the expression of inflammation related protein, such as tumor necrosis factor-α and cyclooxygenase-2, which indicated that they played anti-photoaging activities by reducing MMP-1 expression via down-regulating the production of inflammatory mediators and cytokines in UVB-induced HaCaT cells.
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Affiliation(s)
- Jiejing Yan
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Mimi Hao
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yu Han
- Institute of TCM, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jingya Ruan
- Institute of TCM, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Dandan Zheng
- Institute of TCM, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Fan Sun
- Institute of TCM, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Huina Cao
- Institute of TCM, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jia Hao
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yi Zhang
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Institute of TCM, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Tao Wang
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Institute of TCM, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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