Differences in Sterol Composition of Gonads of the Lottiid Limpets Nipponacmea concinna and Nipponacmea fuscoviridis from Northeastern Japan

Kawashima, Hisanobu; Ohnishi, Masao; Ogawa, Satoshi

doi:10.5650/jos.60.501

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…The order Patellogastropoda (common name, true limpets) consists of the most primitive gastropod molluscs, which inhabit intertidal rocky shores worldwide, from tropical to polar regions 1,2 . Most species from this group feed by scraping a fine film of microalgae from what appears to be a bare rock surface.…”

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confidence: 99%

Comparative analysis of the complete mitochondrial genomes in two limpets from Lottiidae (Gastropoda: Patellogastropoda): rare irregular gene rearrangement within Gastropoda

Jiao

Guo

Yan

et al. 2020

Sci Rep

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To improve the systematics and taxonomy of Patellogastropoda within the evolution of gastropods, we determined the complete mitochondrial genome sequences of Lottia goshimai and Nipponacmea fuscoviridis in the family Lottiidae, which presented sizes of 18,192 bp and 18,720 bp, respectively. In addition to 37 common genes among metazoa, we observed duplication of the trnM gene in L. goshimai and the trnM and trnW genes in N. fuscoviridis. The highest A + T contents of the two species were found within protein-coding genes (59.95% and 54.55%), followed by rRNAs (56.50% and 52.44%) and tRNAs (56.42% and 52.41%). trnS1 and trnS2 could not form the canonical cloverleaf secondary structure due to the lack of a dihydrouracil arm in both species. The gene arrangements in all Patellogastropoda compared with those of ancestral gastropods showed different levels of gene rearrangement, including the shuffling, translocation and inversion of single genes or gene fragments. This kind of irregular rearrangement is particularly obvious in the Lottiidae family. The results of phylogenetic and gene rearrangement analyses showed that L. goshimai and Lottia digitalis clustered into one group, which in turn clustered with N. fuscoviridis in Patellogastropoda. This study demonstrates the significance of complete mitogenomes for phylogenetic analysis and enhances our understanding of the evolution of Patellogastropoda.

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confidence: 99%

Comparative analysis of the complete mitochondrial genomes in two limpets from Lottiidae (Gastropoda: Patellogastropoda): rare irregular gene rearrangement within Gastropoda

Jiao

Guo

Yan

et al. 2020

Sci Rep

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“…For example, Litchfield isolated 26:2∆5,9 (1) and 26:3∆5,9,19 (2) from marine sponges Microciona prolifera and Xestospongia halichondroides [4,5], and Warkup also reported several 5,9-dienoic acids 3-6 from a sponge Aplysina fistularis in 1981 [6]. Since then, it is widely recognized that trace amounts of various NMIFA with a 5,9-dienoic acid structure are frequently found in marine sponges and mollusks [9][10][11][12][13][14][15][16][17][18][19][20][21] (Scheme 1). Since then, it is widely recognized that trace amounts of various NMIFA with a 5,9-dienoic acid structure are frequently found in marine sponges and mollusks [9][10][11][12][13][14][15][16][17][18][19][20][21] (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

“…Carballeira found several unique fatty acids with a 5,9-dienoic structure (7)(8)(9)(10)(11)(12)(13)(14) from the sea anemones Stoichactis helianthus, Condylactis gigantea, and from a zoanthid Palythoa caribaeorum in 1994-1995 [7,8]. Since then, it is widely recognized that trace amounts of various NMIFA with a 5,9-dienoic acid structure are frequently found in marine sponges and mollusks [9][10][11][12][13][14][15][16][17][18][19][20][21] (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, several NMIFA show a variety of biological activities [22][23][24][25]. For example, Tezuka found that several synthetic NMIFA, i.e., 18:2∆4,15 (16), 37:2∆23,29 (17), 37:2∆23,34 (18), and 45:2∆31,42 (19) possess a characteristic growing activity of Aβ (25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)-treated rat cortical neurons [24], and very recently, Yoshida et al also reported the inhibitory activity of compound 16 against glycogen synthase kinase-3β and glucose production in H 4 IIE cells [25].…”

Section: Introductionmentioning

confidence: 99%

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Total Synthesis and Structural Elucidation of Two Unusual Non‐Methylene‐Interrupted Fatty Acids in Ovaries of the Limpet Cellana toreuma

Shimada

Sugawara

Korenaga

et al. 2017

Lipids

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In our previous study, unusual odd-numbered dienoic acids with a terminal olefin were found as minor components in ovaries of the Japanese limpet Cellana toreuma, and the synthetic interests have been focused onto their structural confirmation and the inspection into their potential biological activity. Here, we describe an efficient and stereoselective total synthesis of two new unusual dienoic acids, 19:2∆7,18 and 21:2∆7,20, through a common pathway involving the strategic combination of alkyne-zipper reaction and Lindlar hydrogenation for the construction of their unique carbon chains. In our synthetic study, 2-propyn-1-ol was at first subjected to alkylation and alkyne-zipper reaction to form the two fragments, and the subsequent carbon chain elongation was achieved by the usual coupling reaction to obtain the C-19 and C-21 products bearing an internal acetylenic group. Then, the internal acetylenic group of these products was subjected to Lindlar hydrogenation to form a Z-alkenyl moiety, and the subsequent deprotection of the products was carried out under an acidic condition without isomerization of the internal Z-alkenyl group. Total synthesis of target fatty acids, 19:2∆7,18 and 21:2∆7,20, was finally accomplished by two-step oxidation of the resulting alcohols into carboxylic acids in a highly chemoselective manner, and the structures of these unusual natural fatty acids were finally elucidated by identifying the GC-MS spectra of the methyl esters of authentic and synthetic fatty acids.

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Development and characterization of 26 SNP markers in Nipponacmea schrenckii

Wang

Cui

et al. 2019

Conservation Genet Resour

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Differences in Sterol Composition of Gonads of the Lottiid Limpets Nipponacmea concinna and Nipponacmea fuscoviridis from Northeastern Japan

Cited by 5 publications

References 16 publications

Comparative analysis of the complete mitochondrial genomes in two limpets from Lottiidae (Gastropoda: Patellogastropoda): rare irregular gene rearrangement within Gastropoda

Comparative analysis of the complete mitochondrial genomes in two limpets from Lottiidae (Gastropoda: Patellogastropoda): rare irregular gene rearrangement within Gastropoda

Total Synthesis and Structural Elucidation of Two Unusual Non‐Methylene‐Interrupted Fatty Acids in Ovaries of the Limpet Cellana toreuma

Development and characterization of 26 SNP markers in Nipponacmea schrenckii

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