检索结果-南通市图书馆

农业生物技术：英文版 2017年第5期6卷 28-31,46页

作者： Jiani LIU Shengguang XU Yuyu ZHANG Zebin CHEN Rong LU Lei YU Yunnan Urban Agricultural Engineering and Technologcal Research Center/College of Agriculture Kunming UniversityKunming 650214China Yunnan Bio-carbon Ennineering Technology Research Center Kunming UniversityKunming 650214China

impatiens necrotic spot virus( INSV) is an important plant virus identified in recent years. Western flower thrip( Frankliniella occidentalis) has been confirmed to be the most efficient vector for INSV. In the present study,Illumina's second-generation sequencing technique was used to determine the variation in gene expression at the transcriptome level in western flower thrip before and after infection with INSV. By aligning 168 188 unigenes of western flower thrip to the NCBI protein database,47 558 unigenes were annotated,accounting for 28. 27% of the total. Species classification revealed that 58. 7% of the annotated unigenes of western flower thrip did not match any other species,and 15. 4% of had a match in Zootermopsis navadensis,12. 4% in Mus musculus,7. 3% in Mustela putorius,3. 4% in Theileria parva,and 2. 7% in Tribolium castaneum. By analyzing DEGs between INSV-free and INSV-carrying western flower thrips,we found that 11 genes were upregulated,and 9 genes were downregulated in western flower thrip after INSV infection. In addition,cell cycle and ubiquitin-proteasome pathway in western flower thrip were significantly infected by INSV infection.

关键词： Western flower thrip (Frankliniella occidentalis) impatiens necrotic spot virus (INSV) Transcriptome Gene expression

Sonicating bees demonstrate flexible pollen extraction without instrumental learning

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2019年第4期65卷 425-436页

作者： Callin M. Switzer Avery L. Russell Daniel R. Papaj Stacey A. Combes Robin Hopkins Department of Organismic and Evolutionary Biology Harvard University Cambridge MA USA Arnold Arboretum Harvard University Boston MA USA Department of Ecology and Evolutionary Biology University of Arizona Tucson AZ USA Department of Neurobiology Physiology and Behavior University of California at Davis Davis CA USA Department of Biology and eScience Institute University of Washington Seattle WA USA Department of Biological Sciences University of Pittsburgh Pittsburgh PA USA

Pollen collection is necessary for bee survival and important for flowering plant reproduction, yet if and how pollen extraction motor routines are modified with experience is largely unknown. Here, we used an automated reward and monitoring system to evaluate modification in a common pollen-extraction routine, floral sonication. Through a series of laboratory experiments with the bumblebee, Bombus impatiens, we examined whether variation in sonication frequency and acceleration is due to instrumental learning based on rewards, a fixed behavioral response to rewards, and/or a mechanical constraint. We first investigated whether bees could learn to adjust their sonication frequency in response to pollen rewards given only for specified frequency ranges and found no evidenee of instrumental learning. However, we found that absenee versus receipt of a pollen reward did lead to a predictable behavioral resp on se, which depe nded on bee size. Fin ally, we found some evide nee of mechanical con straints, in that flower mass affected sonication acceleration (but not frequency) through an interaction with bee size. In generalz larger bees showed more flexibility in sonication frequency and acceleration, potentially reflecting a size-based constraint on the range over which smaller bees can modify frequency and accelerati on. Overall our results show that although bees did not display instrumental learning of sonication frequency, their sonication motor routine is nevertheless flexible.

关键词： Bombus impatiens buzz pollination foraging innate behavior learned behavior Solanum

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

海南凤仙花不同海拔种群的传粉生物学

生物多样性 2014年第4期22卷 467-475页

作者：钟云芳张哲宋希强周兆德海南大学热带作物种质资源保护与开发利用教育部重点实验室海口570228 海南大学农学院海口570228 海南大学园艺园林学院海口570228

凤仙花属(impatiens)植物具有极为广泛的多样性和类型各异的特化传粉者,被誉为"双子叶的兰花",受到众多传粉生物学家的关注。本文以海南特有种海南凤仙花(impatiens hainanensis)为研究对象,对3个不同海拔梯度的种群进行了开花生物学特... 详细信息

凤仙花属(impatiens)植物具有极为广泛的多样性和类型各异的特化传粉者,被誉为"双子叶的兰花",受到众多传粉生物学家的关注。本文以海南特有种海南凤仙花(impatiens hainanensis)为研究对象,对3个不同海拔梯度的种群进行了开花生物学特性和开花物候、花器官结构、花粉活力和柱头活性、传粉者种类和访花行为及繁育系统的比较研究。结果表明:单花花期4.10±0.46 d,雄性期和雌性期分别约为3.15±0.24 d和0.95±0.36 d;种群开花峰期在8月初,高海拔种群的花期高峰相对滞后。低、中海拔种群花粉活力呈现先升高后下降的趋势,以开花第2 d花粉活力最高;高海拔种群花粉活力随开花时间推移逐渐下降;柱头活性随开花时间的推移而增强,高海拔种群开花各天次均较低、中海拔种群低。主要传粉昆虫为黄黑无垫蜂(Amegilla leptocoma)和绿条无垫蜂(A.zonata),低、中海拔种群以黄黑无垫蜂为主,高海拔种群以绿条无垫蜂为主。未观察到自动自花授粉和无融合生殖现象,人工授粉能明显增加坐果率(75–90%),自然坐果率在高海拔种群相对较低(40–60%),说明存在较强的传粉者限制。海南凤仙花的保护需要同时关注其有效传粉者的保护,促进有效传粉昆虫在不同海拔种群之间的往来,保证种群间的花粉流与种子流,维持海南凤仙花的种群遗传多样性与有效种群大小。

关键词： impatiens hainanensis 特有种岩溶地貌繁育系统生态适应雌雄异熟

急性子中的一个新的乌苏烷咖啡酸酯类成分(英文)

在线全文

学校读者我要写书评

暂无评论

中国药科大学学报 2010年第2期41卷 118-119页

作者：雷静钱士辉蒋建勤中国药科大学天然药物化学研究室南京210009 江苏省中医药研究院中药资源研究室南京210028

从急性子中分离得到一个新的三萜酯成分,命名为α-香树脂醇咖啡酸酯。

关键词： impatiens balsamina L α-香树脂醇咖啡酸酯三萜类

在线全文

学校读者我要写书评

暂无评论

凤仙花果实

中草药 2016年第19期47卷 3455-3455页

凤仙花impatiens balsamina是凤仙花科（Balsaminaceae）凤仙花属一年生草本植物,披针形的叶子互生,长约10 cm,顶端渐尖,边缘有锐齿,基部楔形;叶柄附近有几对腺体。花期为6～8月,花二三朵同生叶腋,不整齐,花萼有一距,呈角状向下弯曲,花... 详细信息

凤仙花impatiens balsamina是凤仙花科（Balsaminaceae）凤仙花属一年生草本植物,披针形的叶子互生,长约10 cm,顶端渐尖,边缘有锐齿,基部楔形;叶柄附近有几对腺体。花期为6～8月,花二三朵同生叶腋,不整齐,花萼有一距,呈角状向下弯曲,花形似蝴蝶,花色有粉红、大红、紫、白黄、洒金等。椭圆形蒴果,有白色茸毛,成熟时弹裂为5个旋卷的果瓣;种子多数,球状,黑色,状似桃形,成熟时外壳自行爆裂，将种子弹出，自播繁殖。

关键词：凤仙花科凤仙花属 impatiens 洒金楔形白黄基部三朵祛风止痛活血通经

中华人民共和国农业植物品种保护名录(第八批)

在线全文

学校读者我要写书评

暂无评论

司法业务文选 2010年第16期 25-25页