IRON-STIMULATED N-2 FIXATION AND GROWTH IN NATURAL AND CULTURED POPULATIONS OF THE PLANKTONIC MARINE CYANOBACTERIA TRICHODESMIUM SPP

被引：110

作者：

PAERL, HW ^{[1
]}

PRUFERTBEBOUT, LE ^{[1
]}

GUO, CZ ^{[1
]}

机构：

[1] NOAA, NATL MARINE FISHERIES SERV, BEAUFORT LAB, BEAUFORT, NC 28516 USA

来源：

APPLIED AND ENVIRONMENTAL MICROBIOLOGY | 1994年 / 60卷 / 03期

关键词：

D O I：

10.1128/AEM.60.3.1044-1047.1994

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

In light of recent proposals that iron (Fe) availability may play an important role in controlling oceanic primary production and nutrient flux, its regulatory impact on N-2 fixation and production dynamics was investigated in the widespread and biogeochemically important diazotrophic, planktonic cyanobacteria Trichodesmium spp. Fe additions, as FeCl3 and EDTA-chelated FeCl3, enhanced N-2 fixation (nitrogenase activity), photosynthesis (CO2 fixation), and growth (chlorophyll a production) in both naturally occurring and cultured (on unenriched oligotrophic seawater) Trichodesmium populations. Maximum enhancement of these processes occurred under FeEDTA-amended conditions. On occasions, EDTA alone led to enhancement. No evidence for previously proposed molybdenum or phosphorus limitation was found. Our findings geographically extend support for Fe limitation of N-2 fixation and primary production to tropical and subtropical oligotrophic ocean waters often characterized by Trichodesmium blooms.

引用

页码：1044 / 1047

页数：4

共 21 条

[11]

Paerl Hans W., 1993, P343

[12]

PAERL HW, 1990, ADV MICROB ECOL, V11, P305

[13] STIMULATION OF PHYTOPLANKTON PRODUCTION IN COASTAL WATERS BY NATURAL RAINFALL INPUTS - NUTRITIONAL AND TROPHIC IMPLICATIONS [J].

PAERL, HW ;

RUDEK, J ;

MALLIN, MA .

MARINE BIOLOGY, 1990, 107 (02) :247-254

[14] DIRECT MEASUREMENT OF O-2-DEPLETED MICROZONES IN MARINE OSCILLATORIA - RELATION TO N-2 FIXATION [J].

PAERL, HW ;

BEBOUT, BM .

SCIENCE, 1988, 241 (4864) :442-445

[15] LIMITATION OF N-2 FIXATION IN COASTAL MARINE WATERS - RELATIVE IMPORTANCE OF MOLYBDENUM, IRON, PHOSPHORUS, AND ORGANIC-MATTER AVAILABILITY [J].

PAERL, HW ;

CROCKER, KM ;

PRUFERT, LE .

LIMNOLOGY AND OCEANOGRAPHY, 1987, 32 (03) :525-536

[16] GROWTH, NITROGEN-FIXATION, AND SPECTRAL ATTENUATION IN CULTIVATED TRICHODESMIUM SPECIES [J].

PRUFERTBEBOUT, L ;

PAERL, HW ;

LASSEN, C .

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1993, 59 (05) :1367-1375

[17] SEASONAL AND HYDROLOGICAL CONTROL OF PHYTOPLANKTON NUTRIENT LIMITATION IN THE LOWER NEUSE RIVER ESTUARY, NORTH-CAROLINA [J].

RUDEK, J ;

PAERL, HW ;

MALLIN, MA ;

BATES, PW .

MARINE ECOLOGY PROGRESS SERIES, 1991, 75 (2-3) :133-142

[18]

RUETER JG, 1992, NATO ADV SCI I C-MAT, V362, P289

[19]

RUETER JG, 1988, J PHYCOL, V24, P249

[20] NITROGEN,PHOSPHORUS, AND EUTROPHICATION IN COASTAL MARINE ENVIRONMENT [J].

RYTHER, JH ;

DUNSTAN, WM .

SCIENCE, 1971, 171 (3975) :1008-&

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