生物学杂志

生物学杂志 ›› 2021, Vol. 38 ›› Issue (4): 100-.doi: 10. 3969 / j. issn. 2095-1736. 2021. 04. 100

• 综述与专论 • 上一篇    下一篇

翡翠绿葛仙米生活史特征研究

  

  1. 1.湖南农业大学生物科学技术学院,长沙410128; 2.常德炎帝生物科技有限公司,常德415000
  • 出版日期:2021-08-18 发布日期:2021-08-18
  • 通讯作者: 田　云,博士,教授,研究方向为生物资源挖掘与开发利用,E-mail:tianyun@hunau.edu.cn
  • 作者简介:王　卫,硕士研究生,研究方向为葛仙米培育与开发利用研究,E-mail:875754434@qq.com
  • 基金资助:
    湖南省创新创业技术投资项目(2019GK5046);湖南省“100个”重大科技创新项目(2019KJ-063);常德市重大科技项目(常财企指[2018]50号);湖南农业大学“双一流”建设项目(SYL201802002)

Study on the ife history characteristics of emerald greenNostocsphaeroides

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  1. 1. College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China; 2. Changde Yandi Biotechnology Co. , Ltd. , Changde 415000, China
  • Online:2021-08-18 Published:2021-08-18

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摘要： 为探讨翡翠绿葛仙米生活史特征,固体培养藻殖段并定期取样制片,在显微镜下观察藻殖段发育过程中的形摘态变要化。结果表明:在发育过程中,以藻殖段为发育起点的生活史主要包括藻殖段、微球体、藻丝体和异径藻体4个阶段。翡翠绿葛仙米主要以藻殖段繁殖和出芽繁殖进行营养增殖。此外,异形胞分化受藻细胞数量促进,且与出芽繁殖的“雏芽”形成和后期群间单连藻丝断裂有关,说明异形胞是葛仙米生长分化调控的关键靶点。在葛仙米制种过程中,需要关注异形胞对葛仙米生长分化调控的靶点效应。

关键词: 葛仙米, 生活史特征, 藻殖段, 出芽繁殖

Abstract: To explore its life history characteristics, solid culture of hormogoniumand regular sampling and production, morphological changes were studied during the development of hormogoniumunder microscope. The results showed that the life history of the hormog-oniumwas composed of four stages: hormogonium, the minimal colonies, filamentation of seriate colonies and the different diameter colonies. The vegetative proliferation of the emerald green Nostocsphaeroideswas mainly caused by hormogoniumand germinal repro-duction. In addition, the heterocystdifferentiation was promoted by the number of algal cells, and it was related to the formation of ‘embryonic bud’ of germinal reproduction and the fracture of single algae filaments between groups in the later stage of budding. The results showed that hormogoniumwas the key targets of growth and differentiation regulation. In the process of seed production of Nostocsphaeroides, it is necessary to pay attention to the effect of heterocyston the regulation of growth and differentiation of Nostocsphae-roides.

Key words: Nostocsphaeroides, life history characteristics;hormogonium, germinal reproduction

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