PHYSIOLOGICAL VARIABILITY WITHIN 10 STRAINS OF CHAETOCEROS-MUELLERI (BACILLARIOPHYCEAE)

被引：15

作者：

JOHANSEN, JR ^{[1
]}

BARCLAY, WR ^{[1
]}

NAGLE, N ^{[1
]}

机构：

[1] SOLAR ENERGY RES INST,GOLDEN,CO 80401

来源：

JOURNAL OF PHYCOLOGY | 1990年 / 26卷 / 02期

关键词：

Chaetoceros muelleri; diatom physiology: diatom systematics: fatty acid composition: lipids; salinity tolerance; temperature tolerance;

D O I：

10.1111/j.0022-3646.1990.00271.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effects of temperature, ionic composition, and conductivity on growth rates of ten strains of Chaetoceros muelleri Lemmerman (mostly var. subsalsum Johan. & Rushf.) were studied. Lipid content of stressed and unstressed cells and fatty acid composition were also determined. Considerable physiological variability was observed in the ten strains, although principal components analysis of physiological data indicated that all strains fell into one of two major groups: C. muelleri (var. muelleri and var. subsalsum) and an undescribed Chaetoceros species morphologically close to C. muelleri var. subsalsum. A high degree of agreement was found among morphological, physiological, and biochemical data sets, indicating that physiological and biochemical data may be helpful in making taxonomic decisions in diatoms, particularly in taxa with few morphological characters. We also conclude that nonmorphological characters such as those employed in the present study can be used to test phylogenetic hypotheses formulated from traditional morphological data. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：271 / 278

页数：8

共 21 条

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