MOVEMENT OF H+ AND OTHER IONS AT ONSET OF PHOTOSYNTHESIS IN ULVA

被引：23

作者：

CUMMINS, JT

STRAND, JA

VAUGHAN, BE

机构：

[1] Biophysics Branch, U.S. Naval Radiological Defense Laboratory, San Francisco

来源：

BIOCHIMICA ET BIOPHYSICA ACTA | 1969年 / 173卷 / 02期

关键词：

D O I：

10.1016/0005-2736(69)90103-5

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A rapid extrusion of Na+ from Ulva, induced by light, also occurs with other cations, as evidenced by 86Rb+ and 85Sr2- tracer studies; anion movement (36Cl-, 35SO42- and [14C] acetate) is not affected by light. The Na- flux has a pH optimum of about pH 8, and has a time constant similar to that for the movement of H+ and HCO3- concerned in photosynthesis. Substitution experiments indicate that the only externally added ion necessary for the short-term light-induced ion movements is HCO3-. © 1969.

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页码：198 / &

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