Regulatory Role of Sugars on the Settlement Inducing Activity of a Conspecific Cue in Pacific Oyster Crassostrea gigas .

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Tytuł:: Regulatory Role of Sugars on the Settlement Inducing Activity of a Conspecific Cue in Pacific Oyster Crassostrea gigas .
Autorzy:: Sedanza MG; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan.; Institute of Aquaculture, College of Fisheries and Ocean Sciences, University of the Philippines Visayas, Miagao, Iloilo city 5023, Philippines.
Kim HJ; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan.
Seposo X; School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki 852-8523, Japan.
Yoshida A; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan.
Yamaguchi K; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan.
Satuito CG; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan.; Organization for Marine Science and Technology, Nagasaki University, Nagasaki 852-8521, Japan.
Źródło:: International journal of molecular sciences [Int J Mol Sci] 2021 Mar 23; Vol. 22 (6). Date of Electronic Publication: 2021 Mar 23.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Original Publication: Basel, Switzerland : MDPI, [2000-
MeSH Terms:: Cues*
Crassostrea/*physiology
Sugars/*metabolism
Animal Shells/chemistry ; Animals ; Behavior, Animal/drug effects ; Crassostrea/drug effects ; Larva ; Lectins/metabolism ; Polysaccharides/metabolism ; Sugars/pharmacology
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Grant Information:: 19K06189 Japanese Society for the Promotion of Science
Contributed Indexing:: Keywords: Crassostrea gigas; Pacific oyster; conspecific cues; larval settlement; lectin; sugars
Substance Nomenclature:: 0 (Lectins)
0 (Polysaccharides)
0 (Sugars)
Entry Date(s):: Date Created: 20210403 Date Completed: 20210430 Latest Revision: 20240331
Update Code:: 20240331
PubMed Central ID:: PMC8004857
DOI:: 10.3390/ijms22063273
PMID:: 33806943
: Czasopismo naukowe

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This study evaluated the larval settlement inducing effect of sugars and a conspecific cue from adult shell extract of Crassostrea gigas . To understand how the presence of different chemical cues regulate settlement behavior, oyster larvae were exposed to 12 types of sugars, shell extract-coated and non-coated surfaces, and under varied sugar exposure times. Lectin-glycan interaction effects on settlement and its localization on oyster larval tissues were investigated. The results showed that the conspecific cue elicited a positive concentration dependent settlement inducing trend. Sugars in the absence of a conspecific cue, C. gigas adult shell extract, did not promote settlement. Whereas, in the presence of the cue, showed varied effects, most of which were found inhibitory at different concentrations. Sugar treated larvae exposed for 2 h showed significant settlement inhibition in the presence of a conspecific cue. Neu5Ac, as well as GlcNAc sugars, showed a similar interaction trend with wheat germ agglutinin (WGA) lectin. WGA-FITC conjugate showed positive binding on the foot, velum, and mantle when exposed to GlcNAc sugars. This study suggests that a WGA lectin-like receptor and its endogenous ligand are both found in the larval chemoreceptors and the shell Ethylenediaminetetraacetic acid (EDTA) extract that may complementarily work together to allow the oyster larva greater selectivity during site selection.

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