Accession Number:

AD0673077

Title:

THE CO-MOVEMENT OF H(+) AND NA(+) AT THE ONSET OF PHOTOSYNTHESIS IN ULVA, IN RELATION TO OTHER IONS,

Descriptive Note:

Corporate Author:

NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Report Date:

1968-05-17

Pagination or Media Count:

23.0

Abstract:

A rapid extrusion of sodium from Ulva, induced by light, also occurs with other cations as evidenced by 86Rb and 85Sr tracer studies anion movement 36Cl, 35S-sulfate and 14C-acetate is not affected by light. The sodium flux has a pH optimum of about pH 8, and has a time constant similar to that for co-movement of H and HCO3- concerned in photosynthesis. Substitution experiments indicate that only HCO3- is necessary for the short term light induced ion movements. Author

Subject Categories:

  • Biochemistry
  • Radiobiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE