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Characterization of the sex-inducer glycoprotein ofVolvox carteri f.weismannia (1992)

Al-Hasani, Hadi ; Jaenicke, Lothar

Springer

Sexual plant reproduction 5 (1992), S. 8-12

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ISSN: 1432-2145

Keywords: Glycoprotein ; Sexual inducer ; Volvox carteri

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Summary Sexual inducer pheromones fromVolvox carten f.weismannia, strains 65–30(12) and 1B were purified and characterized as glycoproteins with apparent molecular weights of 27 kDa and 28.5 kDa, respectively. This subspecies yielded 20–40 times more pheromone based on weight per spheroid thanVolvox carteri f.nagariensis, but its specific activity (threshold dilution) is four to five orders of magnitude less (10−12 to 10−13 M). Gaschromatographic sugar analysis revealed quantitative differences in the composition of theO- andN-glucans compared with theV. carteri f.nagariensis inducer. TheV. carteri f.weismannia pheromones showed antigenic cross-reaction with an antiserum directed against chemically deglycosylated inducer fromV. carteri f.nagariensis. However, there is only unilateral biological cross-induction. TheV. carteri f.nagariensis inducer is strictly competent for its own gonidia only; the inducers fromV. carteri f.weismannia also cross-induceV. carteri f.nagariensis. This pattern of cross-induction suggests the existence of related pheromone receptors but with different ligand specificities.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00714553

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Lurlene, the sexual pheromone of the green flagellate Chlamydomonas allensworthiiDedicated to Professor Karl Dimroth on occasion of his 85th birthday. (1995)

Jaenicke, Lothar ; Marner, Franz-Josef

Weinheim : Wiley-Blackwell

Liebigs Annalen 1995 (1995), S. 1343-1345

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ISSN: 0947-3440

Keywords: Chlamydomonas allensworthii, pheromone of ; Plastohydroquinone, derivative ; Sexual attractant ; Lurlene ; Chemotaxis ; Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The pheromone produced by the female gametes of the green flagellate Chlamydomonas allensworthii to lure the male gametes for sexual fusion is the plastohydroquinone derivative lurlene, (all-E)-14-[2′-hydroxy-3′,4′-dimethyl-5′-(1″;-β-D-xylopyranosyloxy)phenyl]-4,8,12-trimethyltetradeca-4,8,12-trienoic acid (1).