Journal
HYDROBIOLOGIA
Volume 461, Issue -, Pages 63-69Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1012777502179
Keywords
symbiotic algae; corals; anemones; photosynthesis inhibitor; carbon metabolism; symbiosis
Categories
Ask authors/readers for more resources
When symbiotic dinoflagellate algae (Symbiodinium sp,), isolated from the scleractinian coral Plesiastrea versipora were incubated in homogenized host tissue, carbon fixation was usually lower than in seawater only (43 cases of of 54), and this inhibition occurred throughout the year, Algae incubated in homogenized host tissue fixed a mean of 78.84% +/- 22.6% of the amount fixed by algae in seawater (n = 54, range 33-142%). The difference between rates of fixation in seawater (mean +/- SD of 61.300 +/- 22.71 nmol C/10(5) cells) and in homogenates (mean +/- SD of 47.377 +/- 21.42 nmol C/10(5) cells) in individual experiments, was highly significant (p<0.0001, paired t-test). Homogenized host tissue from populations of P. versipora separated by 4000 km inhibited photosynthesis in algae from both their own and the distant coral population, Inhibition of photosynthesis, was not observed when isolated algae from the anemone, Aiptasia pulchella were incubated in homogenate from P. versipora. An inhibitor of photosynthesis was isolated from a low molecular weight Fraction of homogenized host tissue of P. versipora by cation-exchange chromatography and further purified by HPLC. This is the first natural inhibitor of photosynthesis that has been found in an invertebrate with symbiotic algae.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available