Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:3.6.1.3 (
ATPase
)
65,361
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Diurnal
p
CO
2
fluctuations have the potential to modulate the biological impact of ocean acidification (OA) on reef calcifiers, yet little is known about the physiological and biochemical responses of scleractinian corals to fluctuating carbonate chemistry under OA. Here, we exposed newly settled
Pocillopora damicornis
for 7 days to ambient
p
CO
2
, steady and elevated
p
CO
2
(stable OA) and diurnally fluctuating
p
CO
2
under future OA scenario (fluctuating OA). We measured the photo-physiology, growth (lateral growth, budding and calcification), oxidative stress and activities of carbonic anhydrase (CA), Ca-
ATPase
and Mg-
ATPase
. Results showed that while OA enhanced the photochemical performance of
in hospite
symbionts, it also increased catalase activity and lipid peroxidation. Furthermore, both OA treatments altered the activities of host and symbiont CA, suggesting functional changes in the uptake of dissolved inorganic carbon (DIC) for photosynthesis and calcification. Most importantly, only the fluctuating OA treatment resulted in a slight drop in calcification with concurrent up-regulation of Ca-
ATPase
and Mg-
ATPase
, implying increased energy expenditure on calcification. Consequently, asexual budding rates decreased by 50% under fluctuating OA. These results suggest that diel
p
CO
2
oscillations could modify the physiological responses and potentially alter the energy budget of coral recruits under future OA, and that fluctuating OA is more energetically expensive for the maintenance of coral recruits than stable OA.
...
PMID:Diurnally Fluctuating
p
CO
2
Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification. 3069 40
