生物多样性 ›› 2012, Vol. 20 ›› Issue (6): 769-773.DOI: 10.3724/SP.J.1003.2012.05016

• 生物编目 • 上一篇    下一篇

青藏高原特有禾本科植物三蕊草受威胁等级评估

李伟伟1,2, 张慧2, 赵莉娜2, 包颖1*, 陈文俐2*   

  1. 1曲阜师范大学生命科学学院, 山东曲阜 273165
    2中国科学院植物研究所系统与进化植物学国家重点实验室, 北京 100093
  • 收稿日期:2012-01-15 修回日期:2012-03-16 出版日期:2012-11-20 发布日期:2013-01-04
  • 通讯作者: 包颖,陈文俐
  • 基金资助:

    杂色山雀婚外配的发生机制、亲子识别及亲代抚育规律研究;杂色山雀婚外配的发生机制、亲子识别及亲代抚育规律研究;中国科学院知识创新工程重要方向项目

An evaluation of the endangerment status of Sinochasea trigyna (Poaceae) endemic to the Qinghai-Tibet Plateau

Weiwei Li1,2, Hui Zhang2, Lina Zhao2, Ying Bao1*, Wenli Chen2*   

  1. 1College of Life Sciences, Qufu Normal University, Qufu, Shandong 273165

    2State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093
  • Received:2012-01-15 Revised:2012-03-16 Online:2012-11-20 Published:2013-01-04
  • Contact: Ying Bao; Wenli Chen

摘要: 青藏高原特有的禾本科单种属植物三蕊草(Sinochasea trigyna)是国家II级重点保护野生植物。由于研究材料较难获得, 一直以来缺乏该单种属植物的各项研究资料。本文在野外调查的基础上, 根据IUCN红色名录的国际评估标准, 评估该物种的受威胁等级为易危(Vulnerable, VU), 评估结果为VU B2ab(iii)。本文还初次报道了该种植物的染色体为小型染色体, 数目为2n = 2x = 22。

关键词: RNA病毒, 复制, 转录, 多样性

Abstract: Sinochasea trigyna Keng (Family Poaceae) is endemic to the Qinghai-Tibet Plateau, and is listed as a second class national protected wild plant. The data about this monotypic genus is very scanty since its material difficult to acquire. According to the criterion of IUCN, the endangered level of S. trigyna is evaluated as VU B2ab(iii) based on the data from field investigations, herbarium records and the published literature. In this paper, we also reported the chromosome number (i.e. 2n = 22) and the type microchromosome of S. trigyna, which are both novel findings.

Key words: RNA virus, replication, transcription, diversity