With the increasing planting area of Lilium lancifolium, the leaf fungal dis-ease of L. lancifolium is becoming more and more serious. In June and July of 2014, the excessive rainfal leads to the serious outbreak of l...With the increasing planting area of Lilium lancifolium, the leaf fungal dis-ease of L. lancifolium is becoming more and more serious. In June and July of 2014, the excessive rainfal leads to the serious outbreak of leaf disease of L. lanci-folium. In mid-June, the wilting rate of L. lancifolium in seriously-infected field was even up to 50%-70%. In some fields, the shoots of L. lancifolium even al wilted. The pathogen was isolated from the infected leaves of L. lancifolium. Its pathogenici-ty, spore morphology, 18S rDNA sequence and biological characteristics were stud-ied. The results showed the isolated pathogen was Alternaria alternate. The lethal temperature of mycelial growth was 55 ℃. The optimum pH was 6-7. Among the tested carbon sources and nitrogen sources, the optimum carbon source was mal-tose, and the optimum nitrogen source was yeast extract.展开更多
LFY family genes play a conserved role in regulating flowering. In this study, the cDNA of LiLFY1 was isolated with the strategy of RT-PCR in combination with RACE from lily （Lilium longiflorum Thunb.）. LiLFY1 encod...LFY family genes play a conserved role in regulating flowering. In this study, the cDNA of LiLFY1 was isolated with the strategy of RT-PCR in combination with RACE from lily （Lilium longiflorum Thunb.）. LiLFY1 encodes a LFY transcriptional factor. The alignment analysis of the deduced LiLFY1 protein with other known LFY family proteins indicates that LiLFY1 is highly homologous with rice RFL and maize FLL. The result of Southern hybridization showed that there are two copies of LFY family genes in lily. LiLFY1 is expressed in young flower buds and shoot apical meristem （SAM） but not in roots, shoots, mature leaves, and mature floral organs. The cloned LiLFY1 gene may be applied to genetic engineering aiming for regulating the flowering time in lily.展开更多
目的 研究卷丹 (LiliumlancifoliumThunb .)鳞叶的化学成分。方法 用各种色谱技术进行分离和纯化 ,用MALDI TOF MS ,HR SI MS ,IR ,1 HNMR ,1 3CNMR ,DEPT ,1 H 1 HCOSY ,HMQC和HMBC等光谱和波谱技术鉴定其结构。结果 从卷丹鳞叶中分...目的 研究卷丹 (LiliumlancifoliumThunb .)鳞叶的化学成分。方法 用各种色谱技术进行分离和纯化 ,用MALDI TOF MS ,HR SI MS ,IR ,1 HNMR ,1 3CNMR ,DEPT ,1 H 1 HCOSY ,HMQC和HMBC等光谱和波谱技术鉴定其结构。结果 从卷丹鳞叶中分得 2个甾体皂苷 ,鉴定化合物 1为薯蓣皂苷元 3 O {O α L 鼠李糖基 (1→ 2 ) O [β D 木糖基(1→ 3) ] β D 葡萄糖苷 ,化合物 2为薯蓣皂苷元 3 O {O α L 鼠李糖基 (1→ 2 ) O [α L 阿拉伯糖基 (1→ 3) ] β D 葡萄糖苷。结论 化合物 2为新化合物 ,命名为卷丹皂苷A。展开更多
基金Supported by Modern Agricultural Industry Technology System Project of Ministry of Agriculture(nycytx-35-02-06)Key Program for Applied Basic Research of Agriculture of Hubei Provincial Science and Technology Plan Project(2012DBA07)~~
文摘With the increasing planting area of Lilium lancifolium, the leaf fungal dis-ease of L. lancifolium is becoming more and more serious. In June and July of 2014, the excessive rainfal leads to the serious outbreak of leaf disease of L. lanci-folium. In mid-June, the wilting rate of L. lancifolium in seriously-infected field was even up to 50%-70%. In some fields, the shoots of L. lancifolium even al wilted. The pathogen was isolated from the infected leaves of L. lancifolium. Its pathogenici-ty, spore morphology, 18S rDNA sequence and biological characteristics were stud-ied. The results showed the isolated pathogen was Alternaria alternate. The lethal temperature of mycelial growth was 55 ℃. The optimum pH was 6-7. Among the tested carbon sources and nitrogen sources, the optimum carbon source was mal-tose, and the optimum nitrogen source was yeast extract.
基金the grant of National Center for Plant Gene Research,Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,in Beijing
文摘LFY family genes play a conserved role in regulating flowering. In this study, the cDNA of LiLFY1 was isolated with the strategy of RT-PCR in combination with RACE from lily （Lilium longiflorum Thunb.）. LiLFY1 encodes a LFY transcriptional factor. The alignment analysis of the deduced LiLFY1 protein with other known LFY family proteins indicates that LiLFY1 is highly homologous with rice RFL and maize FLL. The result of Southern hybridization showed that there are two copies of LFY family genes in lily. LiLFY1 is expressed in young flower buds and shoot apical meristem （SAM） but not in roots, shoots, mature leaves, and mature floral organs. The cloned LiLFY1 gene may be applied to genetic engineering aiming for regulating the flowering time in lily.
文摘目的 研究卷丹 (LiliumlancifoliumThunb .)鳞叶的化学成分。方法 用各种色谱技术进行分离和纯化 ,用MALDI TOF MS ,HR SI MS ,IR ,1 HNMR ,1 3CNMR ,DEPT ,1 H 1 HCOSY ,HMQC和HMBC等光谱和波谱技术鉴定其结构。结果 从卷丹鳞叶中分得 2个甾体皂苷 ,鉴定化合物 1为薯蓣皂苷元 3 O {O α L 鼠李糖基 (1→ 2 ) O [β D 木糖基(1→ 3) ] β D 葡萄糖苷 ,化合物 2为薯蓣皂苷元 3 O {O α L 鼠李糖基 (1→ 2 ) O [α L 阿拉伯糖基 (1→ 3) ] β D 葡萄糖苷。结论 化合物 2为新化合物 ,命名为卷丹皂苷A。
