MICROBIAL HYDROLYTIC ENZYME-ACTIVITIES IN DEEP-SEA SEDIMENTS

被引：54

作者：

BOETIUS, A ^{[1
]}

机构：

[1] INST HYDROBIOL & FISCHEREIWISSENSCH,BIOL OZEANOG ABT,D-22765 HAMBURG,GERMANY

来源：

HELGOLANDER MEERESUNTERSUCHUNGEN | 1995年 / 49卷 / 1-4期

关键词：

D O I：

10.1007/BF02368348

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The potential hydrolysis rates of five different hydrolytic enzymes were determined in deep-sea sediments from the northeast Atlantic (BIOTRANS area) in March 1992. Fluorogenic substrates were used to assay extracellular alpha- and beta-glucosidase, chitobiase, lipase and aminopeptidase. The potential activity of most of the enzymes investigated decreased to a minimum within the upper two centimetre range, whereas aminopeptidase was high over the upper five centimetre range. Exceptions were found when macrofaunal burrows occurred in the cores, always increasing the activities of some hydrolases, and therefore indicating the impact of bioturbation on degradation rates. The most striking feature of the investigated enzyme spectrum was the 50-2000 times higher specific activity of the aminopeptidase, compared with the other hydrolases. The activity of hydrolytic enzymes most likely reflects the availability of their respective substrates and is not a ;function of bacterial biomass.

引用

页码：177 / 187

页数：11

共 29 条

[1] CHARACTERISTICS, DYNAMICS AND SIGNIFICANCE OF MARINE SNOW [J].

ALLDREDGE, AL ;

SILVER, MW .

PROGRESS IN OCEANOGRAPHY, 1988, 20 (01) :41-82

[2] EVIDENCE FOR LOCALIZED ENHANCEMENT OF BIOLOGICAL-ACTIVITY ASSOCIATED WITH TUBE AND BURROW STRUCTURES IN DEEP-SEA SEDIMENTS AT THE HEBBLE SITE, WESTERN NORTH-ATLANTIC [J].

ALLER, JY ;

ALLER, RC .

DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1986, 33 (06) :755-790

[3]

ALLER RC, 1978, J MAR RES, V36, P201

[4]

BARNETT PRO, 1984, OCEANOL ACTA, V7, P399

[5]

BERNER RA, 1980, EARLY DIAGENESIS

[6]

Bitten G., 1982, SEDIMENT MICROBIOLOG, P15

[7]

BOETIUS A, 1992, THESIS U HAMBURG

[8]

CHROST RJ, 1991, MICROBIAL ENZYMES AQ, P29

[9]

DEMING JW, 1992, DEEP SEA FOOD CHAINS, P11

[10] ORGANIC-CARBON DYNAMICS AND PRESERVATION IN DEEP-SEA SEDIMENTS [J].

EMERSON, S ;

FISCHER, K ;

REIMERS, C ;

HEGGIE, D .

DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1985, 32 (01) :1-21

← 1 2 3 →