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Seagrass proteins: Sources of health-promoting agents awaiting exploration?

Food Innovation and Advances 2023年第1期2卷 18-20页

作者： Tsun-Thai Chai jillian lean sim ooi Fai-Chu Wong Department of Chemical Science Faculty of ScienceUniversiti Tunku Abdul Rahman31900 KamparMalaysia Center for Agriculture and Food Research Universiti Tunku Abdul Rahman31900 KamparPerakMalaysia Department of Geography Faculty of Arts and Social SciencesUniversiti Malaya50603 Kuala LumpurMalaysia

Seagrasses are marine plants that form economically and ecologically important ecosystems in coastal seas around the *** seaweeds,another group of marine flora,seagrasses are flowering and seed-bearing ***,there are only 72 known species of seagrasses,distributed over six bioregions,spanning from the Temperate North Atlantic to the Temperate Southern Ocean[1].This contrasts with 295,383 species of terrestrial flowering plants[2]and 225,000 species of seaweeds known to science[3].

关键词： ecosystems coastal marine

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Seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat functions

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Ecosystem Health and Sustainability 2020年第1期6卷 533-540,532页

作者： Jianguo Du Wenjia Hu Ivan Nagelkerken Laddawan Sangsawang Kar Hoe Loh jillian lean-sim ooi Jianji Liao Xinqing Zheng Shuting Qiu Bin Chen Third Institute of Oceanography Ministry of Natural ResourcesXiamenChina Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration XiamenChina School of Biological Sciences and the Environment Institute The University of AdelaideAdelaideAustralia Eastern Gulf of Thailand Marine and Coastal Resources Research and Development CenterRayongThailand Institute of Ocean and Earth Sciences University of MalayaKuala LumpurMalaysia Department of Geography Faculty of Arts and Social SciencesUniversity of MalayaKuala LumpurMalaysia

Tropical seagrass meadows and coral reefs often function as interconnected marine habitats,but they are often studied and managed as homogenous *** macrohabitats,seagrass meadows provide important benefits to adjacent reef ecosystems by acting as natural filters of sediments and nutrients,and by providing critical feeding,nursery,and refuge habitats for reef fishes and other *** the macrohabitat functions of seagrass meadows have been often acknowledged,their microhabitats functions have largely been *** purpose of the study is to explore how seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat *** paper reveals some of the diversity of microhabitats that seagrass meadows contain,such as macroalgal mats,rubble cavities,sand patches with sparse seagrass,anemone gardens,hard substratum,and sponges mixed with *** highlight the ways in which reef creatures have diversified and specialized in using these different microhabitats,and postulate that seagrass microhabitat diversity enhances the habitat function and faunal diversity of seagrass meadows.

关键词： Coastal ecosystems habitat function connectivity marine biodiversity

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Purification and identification of novel cytotoxic oligopeptides from soft coral Sarcophyton glaucum

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2019年第1期20卷 59-70页

作者： Yixian QUAH Nor Ismaliza MOHD ISMAIL jillian lean sim ooi Yang Amri AFFENDI Fazilah ABD MANAN Lai-Kuan TEH Fai-Chu WONG Tsun-Thai CHAI Department of Chemical Science Faculty of Science Universiti Tunku Abdul Rahman Department of Biological Science Faculty of Science Universiti Tunku Abdul Rahman Centre for Biodiversity Research Universiti Tunku Abdul Rahman Department of Geography Faculty of Arts and Social Sciences University of Malaya Institute of Biological Sciences Faculty of Science University of Malaya Institute of Ocean and Earth Sciences University of Malaya Department of Biosciences Faculty of Science Universiti Teknologi Malaysia Department of Biomedical Science Faculty of Science Universiti Tunku Abdul Rahman

Globally, peptide-based anticancer therapies have drawn much attention. Marine organisms are a reservoir of anticancer peptides that await discovery. In this study, we aimed to identify cytotoxic oligopeptides from Sarcophyton glaucum. Peptides were purified from among the S. glaucum hydrolysates produced by alcalase, chymotrypsin, papain, and trypsin, guided by a methylthiazolyldiphenyl-tetrazolium bromide(MTT) assay on the human cervical cancer(HeLa) cell line for cytotoxicity evaluation. Purification techniques adopted were membrane ultrafiltration, gel filtration chromatography, solid phase extraction(SPE), and reversed-phase high-performance liquid chromatography(RP-HPLC). Purified peptides were identified by de novo peptide sequencing. From papain hydrolysate, three peptide sequences were identified: AGAPGG, AERQ, and RDTQ(428.45, 502.53, and 518.53 Da, respectively). Peptides synthesized from these sequences exhibited cytotoxicity on HeLa cells with median effect concentration(EC50) values of 8.6, 4.9, and 5.6 mmol/L, respectively, up to 5.8-fold stronger than the anticancer drug 5-fluorouracil. When tested at their respective EC50, AGAPGG, AERQ, and RDTQ showed only 16%, 25%, and 11% cytotoxicity to non-cancerous Hek293 cells, respectively. In conclusion, AERQ, AGAPGG, and RDTQ are promising candidates for future development as peptide-based anticancer drugs.

关键词： Anticancer therapy Bioactive peptide Cytotoxicity HeLa cells Sarcophyton glaucum Soft coral

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热带海草床与珊瑚礁生态脆弱性评价——以马来西亚诗巫-丁宜群岛为例

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生态学杂志 2022年第12期41卷 2479-2488页

作者：丁丽可胡文佳陈彬罗嘉豪黄莲心李醴杰邱书婷顾海峰郑新庆梁姗姗杜建国上海海洋大学海洋科学学院上海201306 自然资源部第三海洋研究所福建厦门361005 自然资源部海洋生态保护与修复重点实验室福建厦门361005 Institute of Ocean and Earth Sciences Universiti MalayaKuala Lumpur50603Malaysia Department of Geography Faculty of Arts and Social SciencesUniversiti MalayaKuala Lumpur 50603Malaysia Bachok Marine Research Station Institute of Ocean and Earth SciencesUniversiti MalayaBachok 16310KelantanMalaysia

选择马来西亚诗巫-丁宜群岛作为研究区域,基于暴露-敏感-适应(ESA)模型构建了海草床与珊瑚礁生态脆弱性评价指标体系,结合空间分析技术评估海草床与珊瑚礁的生态脆弱性状况及其空间分布。结果表明:诗巫-丁宜群岛海草床与珊瑚礁生态系统... 详细信息

选择马来西亚诗巫-丁宜群岛作为研究区域,基于暴露-敏感-适应(ESA)模型构建了海草床与珊瑚礁生态脆弱性评价指标体系,结合空间分析技术评估海草床与珊瑚礁的生态脆弱性状况及其空间分布。结果表明:诗巫-丁宜群岛海草床与珊瑚礁生态系统暴露性在空间分布上呈现从北部到南部逐渐增加的趋势,海草床生态系统的敏感性整体上高于珊瑚礁生态系统,多数站位的生态脆弱性处于中等水平;海草床生态系统的脆弱性普遍高于珊瑚礁生态系统,暴露性和敏感性对海草床与珊瑚礁生态脆弱性的影响并非都是相对独立的。提高海水质量和实施海洋公园分区管理,对降低诗巫-丁宜群岛海洋生态系统的脆弱性有积极意义;同时,也要加强对海草床与珊瑚礁生态系统的整体保护。

关键词：生态连通性海草床珊瑚礁海洋生态系统保护柔佛州

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