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Extracellular products of photosynthesis in a tropical environment

DRS at CSIR-National Institute of Oceanography

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Field Value
 
Title Extracellular products of photosynthesis in a tropical environment
 
Creator Gomes, H.R.
Pant, A.
 
Subject Aquatic Ecology, Productivity
glycolic acid
primary production
phytoplankton
carbon fixation
photosynthesis
ISW, Arabian Sea
 
Description Extracellular products in the Arabian Sea averaged 0.42 g/cm2/day and represented 35% of the total carbon fixed by phytoplankton. No seasonal changes are observed during the two seasons i.e. premonsoon (Jan-Feb) and onset of southwest monsoon (April - May). Maximum extracellular production occurred at the surface in contrast to the sub-surface maxima in particulate production. Percentage extracellular release was higher (35%) in the nutrient limited waters of the Arabian Sea as compared to only 7.6% in the estuarine waters of Dona Paula, Goa, where nutrients are seldom limiting. A partially modified radiochromatographic method was used to identify some of the photosynthetic products released. Glycollic acid, a product of photorespiration and one of the more commonly occurring products of excretion did not appear to be a major excretory compound. It constituted only 2-32% of the total radioactivity and was present in only 34% of the samples. Citrate was tentatively identified as another product of extracellular release. Unidentified acids comprised 2-78% of the total radioactive material recovered from the phytoplankton exudate
 
Date 1995-09-10T10:01:33Z
2017-09-29T13:48:09Z
1995-09-10T10:01:33Z
2017-09-29T13:48:09Z
1987
 
Type Journal Article
 
Identifier Proceedings of the Indian National Science Academy, vol.53B; 1987; 481-485
0370-0046
http://drs.nio.org/drs/handle/2264/6038
 
Language en
 
Relation P Indian Natl Sci Acad
NON-SCI
 
Publisher Indian Academy of Sciences, Bangalore