Zhao C et al. (2014), Effects of light and covering behavior on PAX6 ...

ECB-ART-43665

PLoS One 2014 Oct 17;910:e110895. doi: 10.1371/journal.pone.0110895.

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Effects of light and covering behavior on PAX6 expression in the sea urchin Strongylocentrotus intermedius.

Zhao C , Ji N , Sun P , Feng W , Wei J , Chang Y .

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We studied the diel expression pattern of PAX6 (a structural gene that is commonly involved in the eye development and photoreception of eye forming animals) and the effects of light and covering behavior on PAX6 expression in the sea urchin Strongylocentrotus intermedius. We confirmed that aphotic condition significantly reduced covering behavior in S. intermedius. The diel expression pattern of PAX6 was significantly different in S. intermedius under photic and aphotic conditions. The gene expression of PAX6 significantly deceased in covered S. intermedius both under natural light and in darkness. The present finding provides valuable insight into the probable link between covering and PAX6 expression of sea urchins. Further studies are required to investigate the detailed expression network of light detection involved genes in order to fully reveal the molecular mechanism of the light-induced covering behavior of sea urchins.

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Species referenced: Echinodermata
Genes referenced: LOC100887844 pax6

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References [+] :

Kim, Pax6-dependent cortical glutamatergic neuronal differentiation regulates autism-like behavior in prenatally valproic acid-exposed rat offspring. 2014, Pubmed

	Figure 1. Natural light intensity at the bottom of the tanks during the diel cycle (Nâ€Š=â€Š3, mean Â± SE).
	Figure 2. Relative expression of PAX 6 in tube feet of Strongylocentrotus intermedius under different light conditions during a diel cycle (Nâ€Š=â€Š3, mean Â± SE).Different letters above the line refer to significant difference in the group of light.
	Figure 3. Number of shells used for covering by Strongylocentrotus intermedius under photic (Y) or aphotic (N) conditions (Nâ€Š=â€Š16, mean Â± SE).
	Figure 4. Effect of covering behavior on relative expression of PAX 6 in Strongylocentrotus intermedius under photic and aphotic conditions.Y: covering material present. N: covering material not present. (Nâ€Š=â€Š4, mean Â± SE).