Mussaenda lancipetala X. F. Deng & D. X. Zhang,a new species of Rubiaceae from China

Mussaenda lancipetala X. F. Deng & D. X. Zhang, a new species of Rubiaceae from Yunnan Province, Southwestern China, is described and illustrated. The new species is characterized by its reverse herkogamous sexual system, its ovate-lanceolate corolla lobes with caudate apex, and corolla tube covered with sparse farinose pubescence, by which it is clearly distinguished from other species of Mussaenda.     

中国玉叶金花属(茜草科)植物一新种

报道了在云南发现的玉叶金花属Mussaenda一新种——狭瓣玉叶金花M. lancipetala X. F. Deng ＆ D. X. Zhang。狭瓣玉叶金花的性系统为柱头缩入式雌雄异位; 花冠裂片卵状披针形且具有细长的长尖头, 花冠管外被有粉末状的毛被, 可以很容易与玉叶金花属其他种类相区别。     

国产丝瓜藓属（真藓科）两新种

报道了我国丝瓜藓属Pohlia两新种,即产自云南的明齿丝瓜藓 P．hyaloperistoma Zhang,Li &; Higuchi和产自西藏的疏叶丝瓜藓P．macrocarpa Zhang,Li&;Higuchi。前者主要特征为蒴齿透明无疣,后者孢子体大型且雌雄异株。     

中国含笑属一新种

发表了中国含笑属一新种     

蕺菜属不同居群间比较解剖学研究

对采自四川、重庆、江苏等地蕺菜属的 2 5个不同居群间进行了较为全面的比较解剖学研究。结果表明 :蕺菜属不同居群间的根、地上茎、地下茎、叶等器官在解剖结构上存在较大差异。但峨眉蕺菜与蕺菜解剖结构的种间差异不明显。文中还对蕺菜属不同居群间解剖结构差异与质量间关系进行了探讨。     

Intracellular cholesterol stimulates ENaC by interacting with phosphatidylinositol‑4,5‑bisphosphate and mediates cyclosporine A-induced hypertension

We have previously shown that blockade of ATP-binding cassette transporter A1 (ABCA1) with cyclosporine A (CsA) stimulates the epithelial sodium channel (ENaC) in cultured distal nephron cells. Here we show that CsA elevated systolic blood pressure in both wild-type and apolipoprotein E (ApoE) knockout (KO) mice to a similar level. The elevated systolic blood pressure was completely reversed by inhibition of cholesterol (Cho) synthesis with lovastatin. Inside-out patch-clamp data show that intracellular Cho stimulated ENaC in cultured distal nephron cells by interacting with phosphatidylinositol?4,5?bisphosphate (PIP₂), an ENaC activator. Confocal microscopy data show that both α?ENaC and PIP₂ were localized in microvilli via a Cho-dependent mechanism. Deletion of membrane Cho reduced the levels of γ?ENaC in the apical membrane. Reduced ABCA1 expression and elevated intracellular Cho were observed in old mice, compared to young mice. In parallel, cell-attached patch-clamp data from the split-open cortical collecting ducts (CCD) show that ENaC activity was significantly increased in old mice. These data suggest that elevation of intracellular Cho due to blockade of ABCA1 stimulates ENaC, which may contribute to CsA-induced hypertension. This study also implies that reduced ABCA1 expression may mediate age-related hypertension by increasing ENaC activity via elevation of intracellular Cho.     

四川重楼属（延龄草科）一新变种——短瓣凌云重楼

描述了四川延龄草科重楼属一新变种——短瓣凌云重楼[Paris cronquistii (Takht.)H.Li var.brevipetalata H.X.Yin et H.Zhang].新变种——短瓣凌云重楼与凌云重楼[P.cronquistii (Takht.)H.Li]相似,区别在于花瓣线形、长1.2～3.1 cm、远短于萼片、下垂,雄蕊较少、8～12枚,仅2轮,叶上表面深绿色,沿中脉具淡绿色斑纹.     

鸡(土从)菌一新种——大果鸡(土从)菌

本种在形态上与鸡(土从)菌[Tcemitomyces albuminosus(Berk.)Heim]较相似,但不同之处在于子实体大,单株独生,未见群生,盖表色泽不呈淡灰或淡褐,而呈煤褐色,菌柄基部色泽尤深,多呈黑褐色。担子孢子干缩处理后表面较平坦,不呈皱褶状凹凸。担孢子一端稍弯曲。菌肉在Melzer氏液下呈黑色而非橙红色,所以立为新种。     

江南园林甲天下，寄畅园林甲江南

寄畅园是张南垣一派造园叠山的重要作品,是张南垣及其传人作品中时间最早的一例,传承了张南垣造园理念的精华,营造出真实山林的境界。寄畅园由张鉽主持改筑,他与秦氏后人秦松龄合作,将其打造为一座一流的名园。如今政府部门应与秦家共同研究和保护寄畅园,秦氏的家族精神是寄畅园的核心之一,是值得复兴的中华文化。寄畅园在保护管理方面还可以进一步提升,恢复明清造园盛期的艺术风貌。