Photosynthesis-irradiance responses and photosynthetic periodicity in the sea anemone Aiptasia pulchella and its zooxanthellae

1984 ◽  
Vol 82 (3) ◽  
pp. 225-232 ◽  
Author(s):  
G. Muller-Parker
Keyword(s):  
Sea Anemone ◽  
Aiptasia Pulchella

Amino acid synthesis in the symbiotic sea anemone Aiptasia pulchella

1998 ◽  
Vol 131 (1) ◽  
pp. 83-93 ◽  
Author(s):  
R. Swanson ◽  
O. Hoegh-Guldberg
Keyword(s):  
Amino Acid ◽  
Acid Synthesis ◽  
Sea Anemone ◽  
Amino Acid Synthesis ◽  
Aiptasia Pulchella

Cellular mechanisms underlying temperature-induced bleaching in the tropical sea anemone Aiptasia pulchella

2001 ◽  
Vol 204 (20) ◽  
pp. 3443-3456 ◽  
Author(s):  
Sara J. Sawyer ◽  
Leonard Muscatine
Keyword(s):  
Protein Phosphorylation ◽  
Plasma Membranes ◽  
Sea Anemone ◽  
Host Cells ◽  
Pocillopora Damicornis ◽  
Cellular Mechanisms ◽  
Paramagnetic Resonance ◽  
Aiptasia Pulchella ◽  
Tropical Sea ◽  
And Control

SUMMARY Temperature-induced bleaching in symbiotic cnidarians is a result of the detachment and loss of host cells containing symbiotic algae. We tested the hypothesis that host cell detachment is evoked through a membrane thermotropic event causing an increase in intracellular calcium concentration, [Ca2+]i, which could then cause collapse of the cytoskeleton and perturb cell adhesion. Electron paramagnetic resonance measurements of plasma membranes from the tropical sea anemone Aiptasia pulchella and the Hawaiian coral Pocillopora damicornis labeled with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) revealed no membrane thermotropic event. In addition, intracellular imaging using Fura-2AM as well as labeling anemones with 45Ca revealed no significant change in [Ca2+]i. However, bleaching could be evoked at ambient temperature with 25 mmol l–1 caffeine without affecting [Ca2+]i. [Ca2+]i could be altered with ionomycin in isolated host cells, but ionomycin could not induce bleaching in A. pulchella. As caffeine can affect levels of intracellular protein phosphorylation, the ability of other agents that alter intracellular levels of protein phosphorylation to evoke bleaching was investigated. The protein phosphatase inhibitor vanadate could induce bleaching in A. pulchella. Two-dimensional gels of 32P-labeled proteins from cold-shocked, caffeine-treated and control anemones show that both temperature shock and caffeine alter the array of phosphorylated host soluble proteins. We conclude that cnidarian bleaching is linked to a temperature-induced alteration in protein phosphorylation.

scholarly journals Tenacibaculum aiptasiae sp. nov., isolated from a sea anemone Aiptasia pulchella

2008 ◽  
Vol 58 (4) ◽  
pp. 761-766 ◽  
Author(s):  
J.-T. Wang ◽  
Y.-J. Chou ◽  
J.-H. Chou ◽  
C. A. Chen ◽  
W.-M. Chen
Keyword(s):  
Sea Anemone ◽  
Aiptasia Pulchella
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