[Objectives] This paper aims to explore the possibility to intercrop garlic with pomegranate tree to control pomegranate wilt.[Methods] Root exudates of garlic is cultivated in 1/5 concentration of MS solution and dis...[Objectives] This paper aims to explore the possibility to intercrop garlic with pomegranate tree to control pomegranate wilt.[Methods] Root exudates of garlic is cultivated in 1/5 concentration of MS solution and distilled water is examined in lab to test their effect to growth of mycelia of pomegranate wilt pathogen（Ceratocystis fimbriata）and multiplication of Bacillus subtilis.[Results] The result shows that garlic root exudates whatever cultivated in MS solution or distilled water could not inhibit or promote mycelia growth of C.fimbriata.However,garlic root exudates cultivated in both methods effectively promote multiplication of B.subtilis.[Conclusions] It is suggested that intercropping garlic with pomegranate tree by combining application B.subtilis could be a promising way to prevent pomegranate wilt spread in practice.展开更多
This study aimed to investigate the tissue culture and rapid propagation techniques of Orostachys fimbriata, a medicinal and ornamental herbaceous perennial herb belonging to the family Crassulaceae. The leaves of O. ...This study aimed to investigate the tissue culture and rapid propagation techniques of Orostachys fimbriata, a medicinal and ornamental herbaceous perennial herb belonging to the family Crassulaceae. The leaves of O. fimbriata were used as explants to investigate the effects of plant growth regulators such as thidiazuron (TDZ), 6-benzylamino purine (6-BA) and 1-naphthaleneacetic acid (NAA), on the induction of callus, differentiation of adventitious buds and rooting of shoots. Our results showed that optimum callus induction medium was MS medium supplemented with 0.5 mg·L<sup>-1</sup> TDZ and 0.2 mg·L<sup>-1</sup> NAA. 1.5 mg·L<sup>-1</sup> 6-BA and 0.2 mg·L<sup>-1</sup> NAA was the optimum hormone combination for differentiation of adventitious buds. And 0.1 mg·L<sup>-1</sup> NAA could efficiently promote rooting. The survival rate of transplants reached about 90%. In this study, using leaves of O. fimbriata as explants, high efficient tissue culture and regeneration system of O. fimbriata were established, and the period from leave to transplant plantlet was about 3 months. The presently developed protocol could be used for large scale clonal propagation and germplasm conservation of O. fimbriata. The efficient tissue culture system of O. fimbriata would provide technical support for its utilization.展开更多
以不侵染黑斑病菌长喙壳菌(Ceratocystis fimbriata Ellis et Halsted)的抗病甘薯品种南京92和感病品种徐薯18的薯块为对照组,以侵染时间1、3、7 d时的薯块为处理组进行转录组测序。测序结果表明:在抗病品种中找到36127个差异表达基因(d...以不侵染黑斑病菌长喙壳菌(Ceratocystis fimbriata Ellis et Halsted)的抗病甘薯品种南京92和感病品种徐薯18的薯块为对照组,以侵染时间1、3、7 d时的薯块为处理组进行转录组测序。测序结果表明:在抗病品种中找到36127个差异表达基因(differential expressed genes,DEGs),其中上调、下调表达的基因分别有17387、18740个;在感病品种中找到44663个DEGs,其中上调、下调表达的基因分别有22928、21735个;在相同时间点抗、感品种间的R_(1) vs S_(1)、R_(2) vs S_(2)、R_(3) vs S_(3)和R_(4) vs S_(4)这4个对比组中有1057个共有DEGs。GO富集分析结果表明:甘薯长喙壳菌侵染3 d时抗、感品种中富集到的前20的GO条目均主要为细胞成分,其次为生物过程和分子调控;隶属于生物过程的单一生物代谢过程、隶属于分子功能的氧化还原酶活性和四吡咯结合,以及隶属于细胞组分的质体和细胞外围等条目在抗、感品种中均被富集到。KEGG通路富集分析结果表明:在富集的前20的KEGG信号通路中,抗、感品种中的差异基因主要被富集到代谢途径、次级代谢产物的生物合成、碳代谢、苯丙烷生物合成、柠檬酸循环/三羧酸循环以及光合作用等通路上。此外,对长喙壳菌侵染甘薯块根的抗性相关基因进行了分析,共鉴定出221个抗性相关基因,其中激酶类(kinase,KIN)基因最多,有117个,占比为52.9%。展开更多
A standardized extract of the plant Caralluma fimbriata (Slimaluma?) is widely used in the management of obesity but its mode of action is not yet clarified. This study investigated the ability of Caralluma fimbriata ...A standardized extract of the plant Caralluma fimbriata (Slimaluma?) is widely used in the management of obesity but its mode of action is not yet clarified. This study investigated the ability of Caralluma fimbriata extract (CFE) to modify pre-adipocyte cell division and thus the development of hyper-plastic obesity. Mouse 3T3-L1 pre-adipocyte cell line samples were treated with different concentrations of an extract of CFE standardized against its pregnane glycoside content. Plain medium formed the negative control and hydroxyurea was the positive control. The cells were counted at 12-hour intervals, and their viability tested using the MTT assay. The treated cells were subjected to direct and indirect immunofluorescent assays for cyclin D1. CFE inhibited 3T3-L1 cell growth in a dose and duration-dependent manner, with results comparable to those produced by hydroxyurea. The viability of CFE-treated cells was reduced. Direct and indirect immunofluorescent assays demonstrated that CFE inhibits import of cyclin D1into the nucleus. CFE appears to inhibit pre-adipocyte cell division by interfering with a mechanism preceding the import of cyclin D1-CDk4/6 complex into the nucleus during the early G1 phase of the cell cycle, suggesting that CFE has the potential to inhibit hyperplastic obesity.展开更多
Three new ent-kaurane diterpenoids fimbrialtols K–M（3–5） with highly substituted functionalities were isolated from the extract of Flickingeria fimbriata（B1.） Hawkes. The structures of these new compounds were d...Three new ent-kaurane diterpenoids fimbrialtols K–M（3–5） with highly substituted functionalities were isolated from the extract of Flickingeria fimbriata（B1.） Hawkes. The structures of these new compounds were determined by NMR and HR-ESIMS. The relative configurations of these compounds were determined by analysis of NOESY correlations. The absolute configurations of these new compounds were established by CD methods together with considering the biosynthetic pathway. Compounds 3 and4 contain a cinnamic carboxyl group, whereas compound 5 possesses a benzoic carboxyl group representing the first report in more than known 600 ent-kaurane diterpenoids.展开更多
采用菌丝生长速率法在室内测定了6种杀菌剂对甘薯黑斑病菌(Ceratocystis fimbriata Ellis et Halsted)的毒力,结果表明,1%枯草芽孢杆菌可湿性粉剂和2%宁南霉素对甘薯黑斑病菌菌丝生长的抑制效果居前2位,其中后者对该病菌的EC50值为0.30...采用菌丝生长速率法在室内测定了6种杀菌剂对甘薯黑斑病菌(Ceratocystis fimbriata Ellis et Halsted)的毒力,结果表明,1%枯草芽孢杆菌可湿性粉剂和2%宁南霉素对甘薯黑斑病菌菌丝生长的抑制效果居前2位,其中后者对该病菌的EC50值为0.30μg/mL。探讨了7种药剂对甘薯苗期黑斑病的防治效果,结果显示:以50%甲基托布津可湿性粉剂800倍液对苗期黑斑病的防治效果最佳,防效达100%。展开更多
基金Supported by National"973" Project(2011CB100400)~~
文摘[Objectives] This paper aims to explore the possibility to intercrop garlic with pomegranate tree to control pomegranate wilt.[Methods] Root exudates of garlic is cultivated in 1/5 concentration of MS solution and distilled water is examined in lab to test their effect to growth of mycelia of pomegranate wilt pathogen（Ceratocystis fimbriata）and multiplication of Bacillus subtilis.[Results] The result shows that garlic root exudates whatever cultivated in MS solution or distilled water could not inhibit or promote mycelia growth of C.fimbriata.However,garlic root exudates cultivated in both methods effectively promote multiplication of B.subtilis.[Conclusions] It is suggested that intercropping garlic with pomegranate tree by combining application B.subtilis could be a promising way to prevent pomegranate wilt spread in practice.
文摘This study aimed to investigate the tissue culture and rapid propagation techniques of Orostachys fimbriata, a medicinal and ornamental herbaceous perennial herb belonging to the family Crassulaceae. The leaves of O. fimbriata were used as explants to investigate the effects of plant growth regulators such as thidiazuron (TDZ), 6-benzylamino purine (6-BA) and 1-naphthaleneacetic acid (NAA), on the induction of callus, differentiation of adventitious buds and rooting of shoots. Our results showed that optimum callus induction medium was MS medium supplemented with 0.5 mg·L<sup>-1</sup> TDZ and 0.2 mg·L<sup>-1</sup> NAA. 1.5 mg·L<sup>-1</sup> 6-BA and 0.2 mg·L<sup>-1</sup> NAA was the optimum hormone combination for differentiation of adventitious buds. And 0.1 mg·L<sup>-1</sup> NAA could efficiently promote rooting. The survival rate of transplants reached about 90%. In this study, using leaves of O. fimbriata as explants, high efficient tissue culture and regeneration system of O. fimbriata were established, and the period from leave to transplant plantlet was about 3 months. The presently developed protocol could be used for large scale clonal propagation and germplasm conservation of O. fimbriata. The efficient tissue culture system of O. fimbriata would provide technical support for its utilization.
文摘以不侵染黑斑病菌长喙壳菌(Ceratocystis fimbriata Ellis et Halsted)的抗病甘薯品种南京92和感病品种徐薯18的薯块为对照组,以侵染时间1、3、7 d时的薯块为处理组进行转录组测序。测序结果表明:在抗病品种中找到36127个差异表达基因(differential expressed genes,DEGs),其中上调、下调表达的基因分别有17387、18740个;在感病品种中找到44663个DEGs,其中上调、下调表达的基因分别有22928、21735个;在相同时间点抗、感品种间的R_(1) vs S_(1)、R_(2) vs S_(2)、R_(3) vs S_(3)和R_(4) vs S_(4)这4个对比组中有1057个共有DEGs。GO富集分析结果表明:甘薯长喙壳菌侵染3 d时抗、感品种中富集到的前20的GO条目均主要为细胞成分,其次为生物过程和分子调控;隶属于生物过程的单一生物代谢过程、隶属于分子功能的氧化还原酶活性和四吡咯结合,以及隶属于细胞组分的质体和细胞外围等条目在抗、感品种中均被富集到。KEGG通路富集分析结果表明:在富集的前20的KEGG信号通路中,抗、感品种中的差异基因主要被富集到代谢途径、次级代谢产物的生物合成、碳代谢、苯丙烷生物合成、柠檬酸循环/三羧酸循环以及光合作用等通路上。此外,对长喙壳菌侵染甘薯块根的抗性相关基因进行了分析,共鉴定出221个抗性相关基因,其中激酶类(kinase,KIN)基因最多,有117个,占比为52.9%。
文摘A standardized extract of the plant Caralluma fimbriata (Slimaluma?) is widely used in the management of obesity but its mode of action is not yet clarified. This study investigated the ability of Caralluma fimbriata extract (CFE) to modify pre-adipocyte cell division and thus the development of hyper-plastic obesity. Mouse 3T3-L1 pre-adipocyte cell line samples were treated with different concentrations of an extract of CFE standardized against its pregnane glycoside content. Plain medium formed the negative control and hydroxyurea was the positive control. The cells were counted at 12-hour intervals, and their viability tested using the MTT assay. The treated cells were subjected to direct and indirect immunofluorescent assays for cyclin D1. CFE inhibited 3T3-L1 cell growth in a dose and duration-dependent manner, with results comparable to those produced by hydroxyurea. The viability of CFE-treated cells was reduced. Direct and indirect immunofluorescent assays demonstrated that CFE inhibits import of cyclin D1into the nucleus. CFE appears to inhibit pre-adipocyte cell division by interfering with a mechanism preceding the import of cyclin D1-CDk4/6 complex into the nucleus during the early G1 phase of the cell cycle, suggesting that CFE has the potential to inhibit hyperplastic obesity.
基金financially supported by the Chinese National S&T Special Project on Major New Drug Innovation(No.2013ZX09508104)the Fundamental Research Funds for the Central Scientific Research Institutes for Public WelfareCAMS Innovation Fund for Medical Sciences(CIFMS,No.2016-I2M-3-015)
文摘Three new ent-kaurane diterpenoids fimbrialtols K–M（3–5） with highly substituted functionalities were isolated from the extract of Flickingeria fimbriata（B1.） Hawkes. The structures of these new compounds were determined by NMR and HR-ESIMS. The relative configurations of these compounds were determined by analysis of NOESY correlations. The absolute configurations of these new compounds were established by CD methods together with considering the biosynthetic pathway. Compounds 3 and4 contain a cinnamic carboxyl group, whereas compound 5 possesses a benzoic carboxyl group representing the first report in more than known 600 ent-kaurane diterpenoids.
文摘采用菌丝生长速率法在室内测定了6种杀菌剂对甘薯黑斑病菌(Ceratocystis fimbriata Ellis et Halsted)的毒力,结果表明,1%枯草芽孢杆菌可湿性粉剂和2%宁南霉素对甘薯黑斑病菌菌丝生长的抑制效果居前2位,其中后者对该病菌的EC50值为0.30μg/mL。探讨了7种药剂对甘薯苗期黑斑病的防治效果,结果显示:以50%甲基托布津可湿性粉剂800倍液对苗期黑斑病的防治效果最佳,防效达100%。
