中国石斛属一新种

Dendrobium fanjingshanense Z. H. Tsi ex X. H. Jin et Y. W. Zhang, sp. nov. Fig. 1 Habitu D. wilsonii Rolfe simile, a quo tepalis revolutis fulvis, lobo labelli intermedii infra medium macula una flabellata purpurea ornato. Epiphyticum; caulis teres, 20～40 cm altus, 2～3 mm crassus, caespitosus, superne 5～6-foliatus, internodiis 1～1.5 cm longis. Folia oblongo-lanceolata, subcoriacea, 2～5 cm longa, 5～15 mm lata, apice obtusa et plus minusve hamata, basi vaginis tubulatis membranaceis obtecta. Inflorescentiae e lateribus partium superarum caulium annotinorum defoliatorum nascentes, versus apicem caulis laterales, 1～2-florae; pedunculi 2～3 mm longi, ca. 1 mm crassi, basi vaginis 3～4 membranaceis 3～4 mm longis instructi; bracteae ovato-triangulatae, 3～5 mm longae, apice acutae, macula atro-fusca ornatae. Flores patentes; pedicelli cum ovario ca. 2～3 cm longi; tepala revoluta, fulva, apice obtusa; sepalum intermedium oblongum 2 cm longum, medio 6～7 mm latum, apice fere obtusum; sepala lateralia paulo oblique ovato-lanceolata, sepalo intermedio aequilonga sed medio paulo angustiora, apice obtusa, basi cum pede columnae mentum obconoideum ca. 8 mm longum 6 mm latum apice obtusum formantia; petala subelliptica, ca. 2 cm longa, medio 6 mm lata, apice subobtusa; labellum fulvum, basi purpureum et dense velutinum, obscure trilobatum, lobis lateralibus semiorbiculatis erectis, basi (inter lobos laterales) callo uno purpureo praeditis, lobo intermedio ovato, ca. 1 cm longo, 7 mm lato, apice subacuto et recurvo, supra medio carinato, glabro; columna alba, ca. 3 mm longa, basi in pedem ca. 9 mm longum producta, pede medio purpurato, glabro; operculum antherae album, ambitu rhombicum, glabrum; pollinia 4.     

榆梨绵蚜一些型与卵的新发现和记述（同翅目：蚜总科：瘿绵蚜科）

对榆梨绵蚜Ｅｒｉｏｓｏｍａ ｌａｎｕｇｉｎｏｓｕｍ ｄｉｌａｎｕｇｉｎｏｓｕｍ Ｚｈａｎｇ,１９８０的干母,无翅干雌,有翅干雌,无翅侨蚜,有翅性母,雌,雄性蚜放卵进行了描述,除有翅干雌外,其余各型与卵均为首镒记述。所有研究用标本均保存在中国科学院动物研究所昆虫标本馆内。     

Overexpression of miRNA 4451 is Associated With a Poor Survival of Patients With Hypopharyngeal Cancer After Surgery With Postoperative Radiotherapy

Hypopharyngeal cancer (HC) is the most common subset of head and neck cancers. These tumors often have an aggressive clinical outcome characterized by local invasion and regional nodal metastasis. Upregulated miRNAs might be useful as biomarkers for prognosis and molecular targets for these tumors. We determined tumor expression of candidate miRNAs using microarray in 8 HC patients and validated in 372 HC patients. We also used paired tumorous and mucosal tissue to verify the miRNA expression. Log-rank test and Cox model were used to evaluate the survival; and Harrell's C-index was used to compare concordance of Cox models. Our results indicated 7 miRNAs aberrantly expressed in HC. Three of these candidate miRNAs (miRNA-4415, miRNA-200a, and miRNA-30b) were selected for further qRT-PCR validation and all of them were frequently found upregulated in HC tumors; with miR-4451 being the most differentially expressed. Moreover, high expression of miR-4451 was positively correlated with advanced tumor stage and increased mortality risk (HR: 1.6, 95% CI: 1.2–2.3; adjusted HR: 1.5, adjusted 95% CI: 1.1–2.1). Finally, significantly higher expression of miR-4451 in tumors compared to in fresh adjacent normal tissues indicates an oncogenic role of miR-4451 in this tumor. Upregulated miR-4451 in HC samples were frequently found and is significantly associated with advanced stage and poor survival of HC, which may indicate an association of this miRNA with the carcinogenesis process in this tumor site; and they could serve as a prognostic biomarker as well as help develop potential new targets for therapy.     

中国卷叶绵蚜属研究及新种记述~①(同翅目:瘿绵蚜科)

本文记述了同翅目瘿绵蚜科卷叶绵蚜属一新种丁香卷叶绵蚜Prociphilus gambosae sp.nov.和白蜡树卷叶绵蚜Prociphilus fraxini(Fabricius,1777)及忍冬卷叶绵蚜Prociphilus xylostei(De Geer,1773)两个中国新记录种。文中系统研究了该属的标本,给出了无翅孤雌蚜的分种检索表。     

浙江紫金牛属一新变型——黄果朱砂根

报道了发现于浙江苍南县的紫金牛属一新变型--黄果朱砂根(Ardisia crenata Sims f.xanthocarpa F.Y.Zhang et G.Y.Li),该新变型果实为黄色,而原变型为鲜红色.     

芸香科山小橘属一新种——长瓣山小橘

Glycosmis longipetala F. J. Mou ＆ D. X. Zhang is described from Guangxi and Yunnan provinces in southwestern China. The new species is similar to G. cochinchinensis （Lour.） Pierre ex Engl. by its simple leaves, but distinguishable in having long-elliptic or oblanceolate （vs. ovate） leaves, long-ovoid to ellipsoid （vs. ovoid） floral buds, ovaries with many tubercles （vs. smooth） and glabrous （vs. pubescent） stamens. The pollen grains of the new species are 23.9±3.09 （20.8-27.0）×22.0±1.80 （20.4-24.4）μm in size with reticulate exine ornamentation in equatorial area and foveolate in polar area. The chromosome number of the new species is 2n=72.     

关于顶生金花茶分类地位的探讨

根据近年来对顶生金花茶和平果金花茶在其原产地的进一步调查和野外观察并参考过去的研究成果,发现:顶生金花茶与平果金花茶在分布、形态特征、物候期、生态习性及细胞学特性,尤其是繁殖器官和生活史等方面都有明显差异。因此,认为将其降为平果金花茶的变种颇为不妥,主张恢复顶生金花茶作为一个独立种的地位,其名称为顶生金花茶。     

韭菜迟眼蕈蚊危害蚕豆根茎影响豌豆蚜的生长发育

地下害虫和地上害虫虽然在空间上隔离,但植物作为媒介将它们联系到一个系统,为了探讨地下害虫危害对地上害虫的影响,本文利用蚕豆植株作为媒介,研究了韭菜迟眼蕈蚊Bradysia odoriphaga Yang et Zhang危害蚕豆植株对两种色型豌豆蚜Acyrthosiphon pisum的影响。结果表明:韭菜迟眼蕈蚊危害改变了蚕豆植株的营养组成,包括干重和鲜重比、可溶性蛋白、可溶性糖、海藻糖和游离氨基酸。豌豆蚜取食后若虫历期延长,两种色型豌豆蚜1龄历期延长最为显著,红色型豌豆蚜3龄历期延长差异显著,其他各龄历期无差异;豌豆蚜若虫的死亡率提高,绿色型豌豆蚜1龄和2龄的死亡率高于对照组,红色型豌豆蚜2龄、3龄和4龄的死亡率高于对照组,其中红色型豌豆蚜2龄死亡率显著高于对照组;韭菜迟眼蕈蚊危害减小两种色型豌豆蚜每天产蚜数、10d累积产蚜数、净增值率、内禀增长率、周限增长率、相对生长率、体长和体重,平均世代周期延长但是无显著差异。结果表明,韭菜迟眼蕈蚊危害可直接影响蚕豆的营养组成,进一步间接影响豌豆蚜的生长发育。