PHOSPHATASE-ACTIVITY AND ITS ROLE IN THE MINERALIZATION OF ORGANIC PHOSPHORUS IN COASTAL SEA-WATER

被引:64
作者
KOBORI, H
TAGA, N
机构
[1] Ocean Research Institute, University of Tokyo, Tokyo
关键词
D O I
10.1016/0022-0981(79)90098-4
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Alkaline phosphatase activity in sea-water samples taken from Tokyo, Sagami, and Suruga Bays in Japan was measured by a sensitive fluorometric method. There is a relationship between the phosphatase activity and bacterial biomasses in these three bays. The phosphatase-producing bacteria accounted for 40, 46, and 41% of heterotrophic bacteria in Tokyo, Sagami and Suruga Bays, respectively. Significant amounts of phosphatase-hydrolysable organic phosphorus were found in the euphotic zones of these bays and this organic phosphorus fraction accounted for 19 and 50% of organic phosphorus in Tokyo and Sagami Bays, respectively. Phosphatase-hydrolysable organic phosphorus was decomposed completely in the euphotic zone suggesting that this organic fraction is re-cycled in the primary production of the bays. Decomposition of natural organic phosphorus by enzymes was followed by measuring the release of inorganic orthophosphate from samples saturated with chloroform. Release of inorganic phosphorus proceeds rapidly for 2 or 3 days followed by a slow release. Enzymes present in the samples contributed to the decomposition of 50% of the organic phosphorus and the phosphatase enzyme was responsible for the decomposition of one-third of the hydrolysable organic phosphorus in the samples. Potential phosphatase activity in the samples was found to be indicative of the extent and rate of decomposition of organic phosphorus in coastal waters. © 1979.
引用
收藏
页码:23 / 39
页数:17
相关论文
共 30 条
[1]   ROLE OF SURFACE AND EXTRACELLULAR PHOSPHATASES IN PHOSPHORUS REQUIREMENT OF OCHROMONAS [J].
AARONSON, S ;
PATNI, NJ .
LIMNOLOGY AND OCEANOGRAPHY, 1976, 21 (06) :838-845
[2]  
ARMSTRONG FAJ, 1950, J MAR BIOL ASS UK, V24, P145
[3]   ALKALINE PHOSPHATASES AND PHOSPHORUS AVAILABILITY IN LAKE-KINNERET [J].
BERMAN, T .
LIMNOLOGY AND OCEANOGRAPHY, 1970, 15 (05) :663-&
[4]   PHOSPHORUS AVAILABILITY AND ALKALINE-PHOSPHATASE ACTIVITIES IN 2 ISRAELI FISH PONDS [J].
BERMAN, T ;
MOSES, G .
HYDROBIOLOGIA, 1972, 40 (04) :487-498
[5]  
GOLDSCHMIEDT HENRY, 1959, CHEM ZTG, V83, P442
[6]  
GRILL EV, 1964, J MAR RES, V22, P51
[7]  
HEPPEL LA, 1962, J BIOL CHEM, V237, P841
[8]  
HERBES SE, 1974, SCIENCE, V187, P432
[9]  
Hutchinson, 1957, ATREATISE LIMNOLOGY
[10]   PHOSPHORUS EXCRETION + BODY SIZE IN MARINE ANIMALS - MICROZOOPLANKTON + NUTRIENT REGENERATION [J].
JOHANNES, RE .
SCIENCE, 1964, 146 (364) :923-&