A re‐examination of the green algal taxon chlorosarcinales — an ultrastructural approach
A re‐examination of the green algal taxon chlorosarcinales — an ultrastructural approach
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对绿藻类群 chromalarcinales 的重新检查——一种超微结构方法
DOI：
10.1080/07352688909382277
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发表时间：
1989
影响因子：
6.9
通讯作者：
G. L. Floyd
中科院分区：
文献类型：
--
作者：
T. R. Deason;G. L. Floyd
1958年以前，氯藻被划分为四孢子门（Lemmermann, 1 Smith2）和氯球藻门（Fritsch3）。他们被放在以“营养细胞分裂”为特征的家庭中，尽管作者对这一过程的定义不同。Herndon4更喜欢Fritsch的定义，他说：“亲本细胞分裂时通常不会使细胞壁破裂或糊化，原生质体分裂产生的两个单位仅仅是由它们之间发育的一条膜分开，这条膜与亲本的膜横向相连。”Herndon4对营养细胞分裂的重要性印象深刻，并相信这是多细胞生物发展的重要进化步骤，将Fritsch的Chlorosphaeraceae提升到有序的地位。Herndon的目包括产生游动孢子的Chlorosphaeraceae和缺乏游动孢子的Coccomyxaceae。他对新分类群的描述和对旧分类群的修正，遵循Bold5和Starr的先例，6是基于对在规定的营养、光和温度条件下生长的单藻或无性培养物的长期研究。Herndon4建立了Chlorosarcinopsis属，以取代无效的Chlorosphaera Klebs，并修订了Chlorosphaeropsis Vischer。他利用Starr6提出的绿球菌科的一般特征：叶绿体型、游动孢子型和有无类核蛋白。在此基础上，几位研究人员可以添加新属或修改已建立的属，因为它们被分离到培养物中（表1）。
Until 1958, chlorosarcinalean algae were classified in the Tetrasporales (Lemmermann, 1 Smith2) or the Chlorococcales (Fritsch3). They were placed in families characterized by" vegetative cell division" although the authors' definitions ofthat process differed. Herndon4 preferred Fritsch's definition which stated that," the parent cell ordinarily divides without rupture or gelatinization of its wall, the two units produced by division of the protoplast being merely separated by the development between them of a strip of membrane which is joined laterally to the membrane of the parent.''Herndon4 was impressed with the importance of vegetative cell division sensu Fritsch, 3 and believing it to be an important evolutionary step in the development of multicellular organisms, elevated Fritsch's Chlorosphaeraceae to ordinal status. Herndon's order included the Chlorosphaeraceae for genera producing zoospores and the Coccomyxaceae for those lacking zoospores. His descriptions of new taxa and emendations of old taxa, following the precedents of Bold5 and Starr, 6 were based on prolonged study of unialgal or axenic cultures grown under defined conditions of nutrition, light, and temperature. Herndon4 erected the genus Chlorosarcinopsis to replace the invalid Chlorosphaera Klebs, and emended Chlorosphaeropsis Vischer. He utilized the generic characteristics suggested by Starr6 for the Chlorococcaceae: chloroplast-type, zoospore-type, and presence or absence of pyrenoids. This foundation allowed several investigators to add new genera or emend established genera as they were isolated into culture (Table 1).