Mitotic Induction and Synchronized Division in Oedogonium Cardiacum

BioScience ◽  
1982 ◽  
Vol 32 (2) ◽  
pp. 133-134
Author(s):  
Catharine P. Fussell
Keyword(s):  
Oedogonium Cardiacum

Some observations on zoosporogenesis in the female strain of Oedogonium cardiacum

1968 ◽  
Vol 46 (6) ◽  
pp. 767-771 ◽  
Author(s):  
Elizabeth Trerice Retallack ◽  
K. E. Von Maltzahn
Keyword(s):  
Acridine Orange ◽  
Dilute Solutions ◽  
Zoospore Formation ◽  
Intracellular Changes ◽  
Female Strain ◽  
Oedogonium Cardiacum

Developmental cytological events in zoosporogenesis in Oedogonium have been studied in material stained with dilute solutions of acridine orange. Induction leads to isolation of successive protoplasts within the filament. Profound intracellular changes leading to zoospore formation are described and are considered to be the result of cellular isolation. Events during zoosporogenesis are briefly compared to those in oogenesis.

scholarly journals Cytological Studies in the Haploid Male and Female Strains of Oedogonium cardiacum

1971 ◽  
Vol 84 (994) ◽  
pp. 270-273 ◽  
Author(s):  
SATYENDRA N. BANERJEE ◽  
ROBERT J. HORSLEY
Keyword(s):  
Male And Female ◽  
Haploid Male ◽  
Oedogonium Cardiacum

scholarly journals DNA and heterochromatin cycles in male gamete development of Oedogonium

2014 ◽  
Vol 50 (1-2) ◽  
pp. 349-352
Author(s):  
S. P. Shpilevaya
Keyword(s):  
Optical Density ◽  
Cell Nucleus ◽  
Mother Cell ◽  
Chromatin Condensation ◽  
Male Gamete ◽  
Cell Nuclei ◽  
Optimal Density ◽  
Gamete Formation ◽  
Two Peaks ◽  
Oedogonium Cardiacum

In antheridial nuclei of <em>Oedogonium cardiacum</em> (Hass.) Wittr. during male gamete formation, the DNA presynthetic period is shortened, the synthetic and postsynthetic periods are lengthened (G<sub>1</sub> - 15%, S - 58%, G<sub>2</sub> - 29%) as compared with those in vegetative cells (G<sub>1</sub> - 31%, S - 44%, G<sub>2</sub> - 25%). Differences in the ratio of the relative amounts of eu- and heterochromatin in the antheridial mother cell (AMC) nucleus and antheridial cell nucleus were determined. Hydrolysis curves revealed two peaks of higher optical density (3.5 and 8.5 h hydrolysis with 5N HCl at 23°C), corresponding to eu- and heterochromatin. Heterochromatin in antheridial cell nuclei was characterized by a greater optical density than that of heterochromatin in AMC nuclei. The presence of two local optimal density maxima is considered as facultative and constitutive increasing of chromatin condensation in the process of male cell development.

scholarly journals Taxonomic diversity of macrandrous species of Oedogonium Link ex Hirn (Chlorophyceae: Oedogoniales) with emphasis on ecology from Hooghly, West Bengal

2018 ◽  
Vol 5 (10) ◽  
pp. 443-460
Author(s):  
Nilu Halder
Keyword(s):  
West Bengal ◽  
Hard Water ◽  
Taxonomic Diversity ◽  
Total Hardness ◽  
Alkaline Ph ◽  
Freshwater Bodies ◽  
Do Concentration ◽  
Ph Range ◽  
Oedogonium Cardiacum ◽  
Limnological Parameters

The present paper includes detail taxonomic features of nine taxa of Oedogonium Link ex Hirn (Chlorophyceae: Oedogoniales) collected from Hooghly district, West Bengal, India. These taxa are Oedogonium bharuchae N.D. Kamat, Oedogonium cardiacum f. pulchellum Hirn, Oedogonium crispum var. pyriforme (Wittr. ex Hirn) A.K.M.N. Islam et P. Sarma, Oedogonium gunnii Wittr. ex Hirn, Oedogonium khannae f. minus Gonzalves et S.C. Jain, Oedogonium nanum Wittr. ex Hirn, Oedogonium pratense Trans., Oedogonium rivulare A. Br. ex Hirn and Oedogonium vaucheri A. Br. ex Hirn. All those taxa were found to grow epiphytically on the leaves and stems of submerged hydrophytes as filaments in quiet lentic freshwater bodies after the end of rainy season. Twelve limnological parameters like temperature, pH, DO, BOD, COD, NO3-N, PO43-, Cl-, free CO2, TDS, total hardness and turbidity of algal habitats were analyzed and found conducive for their occurrence and growth up to maturity (formation of fertile structures). The result of limnological study also indicated that all these species preferred to grow alkaline pH, less turbid and hard water. Studied limnological parameters recorded as water temperature: 17.5 oC-20 oC, pH range from 7.1-7.6, high dissolved oxygen (DO) concentration 6.4-7.2 mg.L^-1, BOD values < 20.0 mg.L^-1, moderate COD values and lower nutrient levels with other parameters like Cl-, free CO2, TDS, turbidity as 6.8-9.0 NTU and also hard nature of water ranged from 120-204 mg.L^-1.

SOME CHARACTERISTICS OF THE SPERM ATTRACTANT FROM OEDOGONIUM CARDIACUM 1

1974 ◽  
Vol 10 (2) ◽  
pp. 199-204
Author(s):  
Leonard Machlis ◽  
Gerry G. C. Hill ◽  
Katherine E. Steinback ◽  
Walfred Reed
Keyword(s):  
Oedogonium Cardiacum

Studies on giant cells induced by X-rays in Oedogonium cardiacum

1968 ◽  
Vol 53 (2-3) ◽  
pp. 549-552 ◽  
Author(s):  
S.N. Banerjee ◽  
R.J. Horsley
Keyword(s):  
Giant Cells ◽  
X Rays ◽  
Oedogonium Cardiacum
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