[ Objective] This study aimed to develop tissue culture and rapid propagation methods for pedicels of HemerocaUis hybrida. [ Method] Tender pedicels of dwarf H. hybrida were used as experimental materials to sdect cal...[ Objective] This study aimed to develop tissue culture and rapid propagation methods for pedicels of HemerocaUis hybrida. [ Method] Tender pedicels of dwarf H. hybrida were used as experimental materials to sdect callus induction, subculture and rooting media for rapid propagation of H. hybrida.[ Result ] MS ＋ 2.0 - 3.0 mg/L 6-BA ＋ 0.2 - 0.3 mg/L NAA, MS ＋ 1.0 - 2.0 mg/L 6-BA ＋ 0.1 - 0.2 mg/L NAA, MS and 1/2MS ＋ 0.2 mg/L NAA were the appropriate me- dium for callus induction, subculture and rooting, respectively. [ Conclusion] The in vitro culture and clustered seedling rooting technology used in this study are effective methods for rapid propagation of H. hybrida, which provide technieal reference for industrialized production of H. hybrida.展开更多
为探究枳椇果梗多糖(Hovenia dulcis fruit pedicel polysaccharides,HDPs)对酒精暴露小鼠肠道损伤的改善作用,采用16S rRNA高通量测序技术和代谢组学分析方法,研究HDPs对酒精暴露小鼠肠道微生物群和代谢谱的影响。同时,通过酶联免疫吸...为探究枳椇果梗多糖(Hovenia dulcis fruit pedicel polysaccharides,HDPs)对酒精暴露小鼠肠道损伤的改善作用,采用16S rRNA高通量测序技术和代谢组学分析方法,研究HDPs对酒精暴露小鼠肠道微生物群和代谢谱的影响。同时,通过酶联免疫吸附试验、免疫组化、实时定量聚合酶链式反应和Western blot等方法,检测肠道炎症因子、紧密连接蛋白、胆汁酸代谢相关基因和蛋白的表达变化。研究结果表明,HDPs能显著降低酒精诱导的肠道促炎因子白细胞介素-4、干扰素-γ和肿瘤坏死因子α的水平,减少内毒素脂多糖和脂多糖结合蛋白的水平,提高α-淀粉酶活力,上调紧密连接蛋白Claudin-1从而改善肠道屏障功能。16S rRNA测序结果显示,与灌胃114μL/20 g mb酒精的小鼠相比,HDPs能增加小鼠肠道菌群中乳杆菌属(Lactobacillus)的相对丰度,改善酒精暴露所致肠道微生物群多样性和结构紊乱。代谢组学分析发现,HDPs能够调节胆汁酸代谢,降低酒精暴露小鼠肠道中胆汁酸(特别是牛磺胆酸、鹅脱氧胆酸)的水平。此外,HDPs还能抑制酒精暴露小鼠肠道中顶端钠依赖性胆酸转运体mRNA和蛋白水平的表达,减少胆汁酸的重吸收,从而减轻酒精对肠道的负面影响。综上,HDPs可通过调节肠道菌群和胆汁酸代谢,改善肠道屏障功能,对酒精性肠损伤具有潜在的改善作用,本研究结果可为HDPs在功能性食品中应用提供新的视角和理论依据。展开更多
通过对毛竹林(Bamboo forest,BF)与林缘旷地(Open area of forest edge,OAFE)两类生境蝴蝶花自然种群花部与果实(种子)特征及降雨干扰影响的研究,探讨不同生境中蝴蝶花花部特征适应性及有性各组分的差异。结果表明:(1)竹林生境相对于林...通过对毛竹林(Bamboo forest,BF)与林缘旷地(Open area of forest edge,OAFE)两类生境蝴蝶花自然种群花部与果实(种子)特征及降雨干扰影响的研究,探讨不同生境中蝴蝶花花部特征适应性及有性各组分的差异。结果表明:(1)竹林生境相对于林缘旷地生境,蝴蝶花单花花冠的长、宽较大,子房、花部(除花柄)及单花总生物量较小,比花柄长较大;两类生境蝴蝶花花柄生物量与子房生物量呈正相关(P<0.05),协方差分析表明,两类生境该直线回归的总体斜率间(F=18.420,P<0.001)及总体截距间(F=3791.7,P<0.001)均具有显著差异,竹林生境花柄生物量随子房生物量增大而增大的程度更强。竹林生境的蝴蝶花侧花花冠长与宽最高,竹林生境顶花次之,林缘旷地顶花与林缘旷地侧花最低;花部(除花柄)与全花重都表现为林缘旷地侧花最高,林缘旷地顶花次之,竹林侧花与竹林顶花最低。比花柄长随竹林侧花与竹林顶花-林缘旷地侧花-林缘旷地顶花依次降低;竹林顶花的花柄比率最高,竹林侧花与林缘旷地侧花最低。(2)林缘旷地生境中蝴蝶花的每花序花数、花序结果百分率、单花结果百分率、每结果花序果实数、每结果花序果实重与种子重及花期内每花序掉落花数都高于竹林生境。(3)林缘旷地生境大雨干扰的4个时段花朵掉落数显著高于竹林环境(P<0.01)。不同生境花部形态结构特征表明其自身的生境适应性,林缘旷地生境蝴蝶花为抵御干扰及为获得有性繁殖成功,有性组分的投入更高。展开更多
基金Supported by China Agricultural University (Yantai) Project(yt2007.14)
文摘[ Objective] This study aimed to develop tissue culture and rapid propagation methods for pedicels of HemerocaUis hybrida. [ Method] Tender pedicels of dwarf H. hybrida were used as experimental materials to sdect callus induction, subculture and rooting media for rapid propagation of H. hybrida.[ Result ] MS ＋ 2.0 - 3.0 mg/L 6-BA ＋ 0.2 - 0.3 mg/L NAA, MS ＋ 1.0 - 2.0 mg/L 6-BA ＋ 0.1 - 0.2 mg/L NAA, MS and 1/2MS ＋ 0.2 mg/L NAA were the appropriate me- dium for callus induction, subculture and rooting, respectively. [ Conclusion] The in vitro culture and clustered seedling rooting technology used in this study are effective methods for rapid propagation of H. hybrida, which provide technieal reference for industrialized production of H. hybrida.
文摘为探究枳椇果梗多糖(Hovenia dulcis fruit pedicel polysaccharides,HDPs)对酒精暴露小鼠肠道损伤的改善作用,采用16S rRNA高通量测序技术和代谢组学分析方法,研究HDPs对酒精暴露小鼠肠道微生物群和代谢谱的影响。同时,通过酶联免疫吸附试验、免疫组化、实时定量聚合酶链式反应和Western blot等方法,检测肠道炎症因子、紧密连接蛋白、胆汁酸代谢相关基因和蛋白的表达变化。研究结果表明,HDPs能显著降低酒精诱导的肠道促炎因子白细胞介素-4、干扰素-γ和肿瘤坏死因子α的水平,减少内毒素脂多糖和脂多糖结合蛋白的水平,提高α-淀粉酶活力,上调紧密连接蛋白Claudin-1从而改善肠道屏障功能。16S rRNA测序结果显示,与灌胃114μL/20 g mb酒精的小鼠相比,HDPs能增加小鼠肠道菌群中乳杆菌属(Lactobacillus)的相对丰度,改善酒精暴露所致肠道微生物群多样性和结构紊乱。代谢组学分析发现,HDPs能够调节胆汁酸代谢,降低酒精暴露小鼠肠道中胆汁酸(特别是牛磺胆酸、鹅脱氧胆酸)的水平。此外,HDPs还能抑制酒精暴露小鼠肠道中顶端钠依赖性胆酸转运体mRNA和蛋白水平的表达,减少胆汁酸的重吸收,从而减轻酒精对肠道的负面影响。综上,HDPs可通过调节肠道菌群和胆汁酸代谢,改善肠道屏障功能,对酒精性肠损伤具有潜在的改善作用,本研究结果可为HDPs在功能性食品中应用提供新的视角和理论依据。
文摘通过对毛竹林(Bamboo forest,BF)与林缘旷地(Open area of forest edge,OAFE)两类生境蝴蝶花自然种群花部与果实(种子)特征及降雨干扰影响的研究,探讨不同生境中蝴蝶花花部特征适应性及有性各组分的差异。结果表明:(1)竹林生境相对于林缘旷地生境,蝴蝶花单花花冠的长、宽较大,子房、花部(除花柄)及单花总生物量较小,比花柄长较大;两类生境蝴蝶花花柄生物量与子房生物量呈正相关(P<0.05),协方差分析表明,两类生境该直线回归的总体斜率间(F=18.420,P<0.001)及总体截距间(F=3791.7,P<0.001)均具有显著差异,竹林生境花柄生物量随子房生物量增大而增大的程度更强。竹林生境的蝴蝶花侧花花冠长与宽最高,竹林生境顶花次之,林缘旷地顶花与林缘旷地侧花最低;花部(除花柄)与全花重都表现为林缘旷地侧花最高,林缘旷地顶花次之,竹林侧花与竹林顶花最低。比花柄长随竹林侧花与竹林顶花-林缘旷地侧花-林缘旷地顶花依次降低;竹林顶花的花柄比率最高,竹林侧花与林缘旷地侧花最低。(2)林缘旷地生境中蝴蝶花的每花序花数、花序结果百分率、单花结果百分率、每结果花序果实数、每结果花序果实重与种子重及花期内每花序掉落花数都高于竹林生境。(3)林缘旷地生境大雨干扰的4个时段花朵掉落数显著高于竹林环境(P<0.01)。不同生境花部形态结构特征表明其自身的生境适应性,林缘旷地生境蝴蝶花为抵御干扰及为获得有性繁殖成功,有性组分的投入更高。
