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基于茎段外植体的茶树组培苗快繁技术研究
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作者 李家兴 朱俊彦 +6 位作者 张有泽 朱木兰 陈泓蓉 任露露 刘升锐 姚明哲 韦朝领 《茶叶学报》 2024年第1期28-36,共9页
【目的】目前,茶树组培苗繁育存在诱导出芽效率不高、繁殖系数较低等问题。因此,为提高茶树种质资源保存繁育效率,丰富保存手段与技术,建立一种高效、快速、实用的基于茎段外植体的茶树组织培养高效快繁技术体系非常必要。【方法】选用... 【目的】目前,茶树组培苗繁育存在诱导出芽效率不高、繁殖系数较低等问题。因此,为提高茶树种质资源保存繁育效率,丰富保存手段与技术,建立一种高效、快速、实用的基于茎段外植体的茶树组织培养高效快繁技术体系非常必要。【方法】选用来自安徽省六安市舒城县鲍家村群体种的一个国家级品种‘报春1号’作为研究试材,对该品种进行组织培养快繁技术的探索,包括消毒、定芽诱导、不定芽诱导(I期和II期)、芽伸长、以及生根等阶段。【结果】离体快繁:最佳定芽诱导培养基为MS+3 mg·L^(-1)6-苄基腺嘌呤(6-BA),诱导率达82.2%;不定芽增殖I期最佳培养基为MS基础培养基(MS)+2 mg·L^(-1)6-BA+0.2 mg·L^(-1)萘乙酸(NAA),诱导率为77.78%,平均芽数为5.4个;不定芽增殖II期最佳培养基为MS+1 mg·L^(-1)6-BA+0.3 mg·L^(-1)NAA+2 mg·L^(-1)噻苯隆(TDZ),诱导芽数最多(平均值为10.43个),芽苗呈绿色,叶片舒展;不定芽伸长最佳培养基为MS+0.8 mg·L^(-1)6-BA+0.08 mg·L^(-1)NAA,伸长率为63.33%;不定根诱导培养基以1/2MS培养基+3 mg·L^(-1)IBA效果较佳。【结论】本研究结果建立了一种基于茎段外植体的茶树组织培养高效快繁技术,将对优良茶树品种的保存繁育及其高效利用提供理论基础。 展开更多
关键词 茶树组培苗 组织培养 茎段外植体 高效快繁
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同位素稀释超高效液相色谱-串联质谱法同步快速测定热加工肉类中7种杂环胺
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作者 诸力 贾伟 +2 位作者 万旭志 姚明哲 章宇 《食品安全质量检测学报》 CAS 北大核心 2023年第3期106-113,共8页
目的建立同位素稀释超高效液相色谱-串联质谱法同步快速测定热加工肉类中7种杂环胺含量的分析方法。方法样品经甲醇水溶液(3:7,V:V)均质提取,低温高速离心后上清液采用聚苯乙烯-二乙烯苯固相萃取净化。经ACQUITY UPLC■BEH C18(150 mm&#... 目的建立同位素稀释超高效液相色谱-串联质谱法同步快速测定热加工肉类中7种杂环胺含量的分析方法。方法样品经甲醇水溶液(3:7,V:V)均质提取,低温高速离心后上清液采用聚苯乙烯-二乙烯苯固相萃取净化。经ACQUITY UPLC■BEH C18(150 mm×3.0 mm,1.7μm)反相色谱柱分离,三重四极杆串联质谱仪在可编程多反应监测正离子模式下同位素内标法定量测定。结果在质量浓度0.1~100.0 ng/mL范围内,各杂环胺标准品均呈现良好线性关系,相关系数(r^(2))均大于0.999,检出限和定量限范围分别在0.02~0.04ng/g和0.06~0.14 ng/g之间。在低、中、高3种当量水平下加标回收率范围为84.62%~111.97%,日内精密度和日间精密度范围分别为0.83%~6.17%(n=6)和1.84%~9.78%(n=18)。结论本方法稳定、灵敏、高效,适用于不同热加工肉类中多种杂环胺的日常痕量检测分析。 展开更多
关键词 超高效液相色谱-串联质谱法 同位素稀释 固相萃取 杂环胺 热加工肉类
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基于网络药理学及分子对接探讨湿润烧伤膏促进糖尿病溃疡愈合的作用机制
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作者 杨雅量 葛星月 +3 位作者 李文武 竺仕林 姚明哲 唐乾利 《海南医学院学报》 2023年第22期1724-1733,共10页
目的:利用网络药理学和分子对接技术对湿润烧伤膏治疗糖尿病溃疡的主要活性成分和潜在作用机制进行探讨。方法:基于TCMSP数据库筛选湿润烧伤膏主要活性成分和作用靶点,从GeneCards、OMIM、PharmGkb、TTD、DrugBank数据库中查找糖尿病溃... 目的:利用网络药理学和分子对接技术对湿润烧伤膏治疗糖尿病溃疡的主要活性成分和潜在作用机制进行探讨。方法:基于TCMSP数据库筛选湿润烧伤膏主要活性成分和作用靶点,从GeneCards、OMIM、PharmGkb、TTD、DrugBank数据库中查找糖尿病溃疡相关靶点,使用STRING 11.5数据库构建蛋白互作(PPI)网络筛选核心靶点,在Cytoscape 3.8.2软件中制作“药物-靶点-疾病”网络图筛选核心活性成分,使用R语言软件进行基因GO功能和KEGG通路富集分析,最后应用分子对接对筛选结果进行初步验证。结果:筛选出湿润烧伤膏37个活性成分映射100个作用靶点,糖尿病溃疡疾病靶点5527个,交集靶点77个,PPI网络拓扑分析提示TP53、TNF、HSP90AA1等为关键靶点;“药物-靶点-疾病”网络图显示刺槐素、汉黄芩素、槲皮素、吴茱萸次碱等为核心活性成分;GO功能分析主要涉及血管生成、离子转运、管径调节、细胞因子受体结合等过程,KEGG富集分析主要包括PI3K-Akt、AGE-RAGE等信号通路;分子对接显示核心活性成分和关键靶点均具有较好的对接活性。结论:湿润烧伤膏治疗糖尿病溃疡是多成分、多靶点、协同调节的结果,为湿润烧伤膏的临床应用和糖尿病溃疡治疗的研究提供一定的理论依据。 展开更多
关键词 网络药理学 分子对接 湿润烧伤膏 糖尿病溃疡
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Exploring the mechanism of moist exposed burn ointment for the treatment of diabetic ulcer based on network pharmacology and molecular docking
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作者 YANG Ya-liang GE Xing-yue +3 位作者 LI Wen-wu ZHU Shi-lin yao ming-zhe TANG Qian-li 《Journal of Hainan Medical University》 CAS 2023年第22期39-47,共9页
Objective:To discuss the main active components and potential mechanisms of moist burn ointment in the treat-ment of diabetic ulcer were discussed by network pharmacology and molecular docking technology.Methods:Based... Objective:To discuss the main active components and potential mechanisms of moist burn ointment in the treat-ment of diabetic ulcer were discussed by network pharmacology and molecular docking technology.Methods:Based on the TC-MSP database,the main active components and targets of MEBO were screened.The targets related to diabetic ulcers were searched from GeneCards,OMIM,PharmGkb,TTD,and DrugBank databases.The STRING 11.5 database was used to con-struct a protein-protein interaction(PPI)network to screen the core targets.The'drug-target-disease'network diagram was made in Cytoscape 3.8.2 software to screen the core active components.GO enrichment analysis and KEGG pathway enrichment analysis were performed using R language software.Finally,molecular docking was used to preliminarily verify the screening results.Results:A total of 37 active components of MEBO were screened to map 100 targets,5527 targets for diabetic ulcer dis-ease,and 77 intersection targets.PPI network topology analysis suggested that TP53,TNF,HSP90AA1 and other targets were key targets;the network diagram of ‘drug-target-disease’showed that acacetin,wogonin,quercetin,and rutaecarpine were the core active ingredients.GO function analysis mainly involved angiogenesis,ion transport,diameter regulation,cytokine receptor binding,and other processes.KEGG enrichment analysis mainly included PI3K-Akt,AGE-RAGE,and other signaling pathways.Molecular docking showed that the core active ingredients and key targets had good docking activity.Conclusion:The treatment of diabetic ulcer with MEBO is the result of multi-component,multi-target,and synergistic regulation,which provides a theoretical basis for the clinical application of MEBO and the treatment of diabetic ulcer. 展开更多
关键词 Network pharmacology Molecular docking Moist exposed burn ointment Diabetic ulcers
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Preparation of the UPOV Guidelines for the Conduct of Tests for Distinctness, Uniformity and Stability–Tea Plant [Camellia sinensis (L.) O. Kuntze] 被引量:7
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作者 CHEN Liang YU Fu-lian +3 位作者 yao ming-zhe Lü Bo YANG Kun DU Yuan-yuan 《Agricultural Sciences in China》 CAS CSCD 2008年第2期224-231,共8页
Distinctness, Uniformity and Stability (DUS) testing is the technical base of Plant Variety Protection (PVP) and the scientific basis for the approval of Plant Breeder’s Rights (PBR). DUS Test Guidelines are not only... Distinctness, Uniformity and Stability (DUS) testing is the technical base of Plant Variety Protection (PVP) and the scientific basis for the approval of Plant Breeder’s Rights (PBR). DUS Test Guidelines are not only the technical manuals for the DUS testing authorities to conduct the testing, but also the technical standards for the competent authorities to examine the DUS of new varieties of plants. Tea plant, originated from Yunnan Province, China, is a very important woody cash species in the world. The International Union for the Protection of New Varieties of Plants (UPOV) DUS Test Guidelines for tea plant is the first Test Guidelines prepared by China for the UPOV. In this article, the subject, selection, and determination of characteristics, states of expression of characteristics and the selection of example varieties, assessment of the UPOV DUS Test Guidelines for tea plant were elucidated in detail. Finally, the proposal of PVP for tea plant in China was also proposed. The preparation of UPOV DUS Test Guidelines for tea plant will have important significance both for promoting the development of PVP and increasing the status of international PVP fields for China. 展开更多
关键词 植物多样性保护 种植方法 稳定性
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