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ZOOSPORE INHIBITION IN SPONGIOCHLORIS TYPICA 1
Author(s) -
McLean Robert J.,
Trainor Francis R.
Publication year - 1965
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1965.tb04557.x
Subject(s) - zoospore , ammonium , biology , ion , bacteria , microbiology and biotechnology , biochemistry , physics , spore , genetics , chemistry , organic chemistry , quantum mechanics
SUMMARY Spongiochloris typica, grown in a 2‐membered culture with a soil bacterium, did not produce zoospores. The zoospore‐inhibiting effect could be found in the cell‐free filtrate of the bacterial culture grown in complete medium. The phenomenon could not be attributed to a deficiency of Ca or any other component of the medium. Zoospore inhibition could be demonstrated only when the pH was 8.4 or above. Manipulation of the components of complete medium showed that the ammonium ion was necessary for inhibition. Co‐action of any other ion in the complete medium with the ammonium ion could not be demonstrated.