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Adaptive Bird-like Genome Miniaturization During the Evolution of scallop Swimming Lifestyle

Genomics, Proteomics & Bioinformatics 2022年第6期20卷 1066-1077页

作者： Yuli Li Yaran Liu Hongwei Yu Fuyun Liu Wentao Han Qifan Zeng Yuehuan Zhang Lingling Zhang Jingjie Hu Zhenmin Bao Shi Wang Sars-Fang Centre&MOE Key Laboratory of Marine Genetics and Breeding College of Marine Life SciencesOcean University of ChinaQingdao 266003China Laboratory for Marine Biology and Biotechnology Pilot Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Laboratory for Marine Fisheries Science and Food Production Processes Pilot Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Key Laboratory of Tropical Aquatic Germplasm of Hainan Province Sanya Oceanographic InstitutionOcean University of ChinaSanya 572000China CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China

Genome miniaturization drives key evolutionary innovations of adaptive traits in vertebrates,such as the flight evolution of ***,whether similar evolutionary processes exist in invertebrates remains poorly *** from the second-largest animal phylum,scallops are a special group of bivalve molluscs and acquire the evolutionary novelty of the swimming lifestyle,providing excellent models for investigating the coordinated genome and lifestyle ***,we show for the first time that genome sizes of scallops exhibit a generally negative correlation with locomotion *** elucidate the co-evolution of genome size and swimming lifestyle,we focus on the Asian moon scallop(Amusium pleuronectes)that possesses the smallest known scallop genome while being among scallops with the highest swimming ***-genome sequencing of *** reveals highly conserved chromosomal macrosynteny and microsynteny,suggestive of a highly contracted but not degenerated *** reduction of *** is facilitated by significant inactivation of transposable elements,leading to reduced gene length,elevated expression of genes involved in energy-producing pathways,and decreased copy numbers and expression levels of biomineralization-related *** evolutionary changes of relevant pathways are also observed for bird genome reduction with flight *** striking mimicry of genome miniaturization underlying the evolution of bird flight and scallop swimming unveils the potentially common,pivotal role of genome size fluctuation in the evolution of novel lifestyles in the animal kingdom.

关键词： Genome size Lifestyle evolution Genome sequencing scallop Bird

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A bacterial symbiont in the gill of the marine scallop Argopecten irradians irradians metabolizes dimethylsulfoniopropionate

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微生物(英文) 2023年第2期2卷 178-189页

作者： Yi Shu Yongming Wang Zhongcheng Wei Ning Gao Shuyan Wang Chun-Yang Li Qiang Xing Xiaoli Hu Xiao-Hua Zhang Yu-Zhong Zhang Weipeng Zhang Zhenmin Bao Wei Ding MOE Key Laboratory of Marine Genetics and Breeding Ocean University of ChinaQingdaoChina Laboratory of Tropical Marine Germplasm Resources and Breeding Engineering Sanya Oceanographic InstitutionOcean University of ChinaSanyaChina College of Marine Life Sciences Ocean University of ChinaQingdaoChina Institute of Evolution&Marine Biodiversity Ocean University of ChinaQingdaoChina

Microbial lysis of dimethylsulfoniopropionate(DMSP)is a key step in marine organic sulfur cycling and has been recently demonstrated to play an important role in mediating interactions between bacteria,algae,and *** date,microbes that have been found to lyse DMSP are largely confined to free‐living and surface‐attached *** this study,we report for the first time that a symbiont(termed“Rhodobiaceae bacterium HWgs001”)in the gill of the marine scallop Argopecten irradians irradians can lyse and metabolize *** of 16S rRNA gene sequences suggested that HWgs001 accounted for up to 93%of the gill *** observations suggested that HWgs001 lived within the gill *** symbionts of other bivalves,HWgs001 belongs to Alphaproteobacteria rather than Gammaproteobacteria,and no genes for carbon fixation were identified in its small ***,HWgs001 was found to possess a dddP gene,responsible for the lysis of DMSP to *** enzymatic activity of dddP was confirmed using the heterologous expression,and in situ transcription of the gene in scallop gill tissues was demonstrated using reverse‐transcription ***,these results revealed a taxonomically and functionally unique symbiont,which represents the first‐documented DMSP‐metabolizing symbiont likely to play significant roles in coastal marine ecosystems.

关键词： A/phaproteobacteria dddP DMSP lyases scallop symbiont

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Molecular identification of scallop planktonic larvae using species-specific microsatellites

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Acta Oceanologica Sinica 2008年第5期27卷 134-146页

作者： ZHAN Aibin HU Xiaoli BAO Lisui LU Wei PENG Wei WANG Mingling HU Jingjie Laboratory of Marine Genetics and Breeding College of Marine Life Sciences Ocean University of China Qingdao 266003 China

The identification of scallop larvae is essential to understand the population structure and community dynamics and to assess the potential environmental impacts caused by scallop larvae released or escaped. However, the larvae identification by morphological characteristics is notoriously difficult, mainly due to the small size （usually being less than 150 μm） and vague morphological characteristics among different scallop species. A simple and accurate molecular method was developed to identify four economically farmed scallop species, the Zhikong scallop Chlamys farreri, the noble scallop C. nobilis, the bay scallop Argopecten irradians and the Yesso scallop Mizuhopecten yessoensis. The tests used the high degree of species-specific microsatellite markers, which was specified by transferability analyses, assessed by reference individuals and evaluated by BLAST searches. The sensitivity test indicated that the species-specific microsatellites were sensitive enough for the detection of 1% -2% larvae in mixed plankton samples. Larvae collected from scallop hatcheries and their effluents and from the artificially controlled crosses were well identified to the species/hybrid level. The results demonstrated that the one-step PCR-based assay was technically simple, inexpensive and robust in identification analyses, and also less sensitive to initial quality of template DNA extracted from the ethanol-preserved samples for several years.

关键词： species identification scallop planktonic larva microsatellite hybridization

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Effects of scallop shell extract on scopolamine-induced memory impairment and MK801-induced locomotor activity

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Asian Pacific Journal of Tropical Medicine 2016年第7期9卷 643-647页

作者： Yasushi Hasegawa Tatsuro Inoue Satoshi Kawaminami Miho Fujita College of Environmental Technology Muroran Institute of Technology

Objective:To evaluate the neuroprotective effects of the organic components of scallop shells(scallop shell extract) on memory impairment and locomotor activity induced by scopolamine or 5-methyl-10,11-dihydro-5H-dibenzo(a,d) cyclohepten-5,10-imine(MK801).Methods:Effect of the scallop shell extract on memory impairment and locomotor activity was investigated using the Y-maze test,the Morris water maze test,and the open field ***:scallop shell extract significantly reduced scopolamine-induced short-term memory impairment and partially reduced scopolamine-induced spatial memory impairment in the Morris water maze *** shell extract suppressed scopolamine-induced elevation of acetylcholine esterase activity in the cerebral *** with scallop shell extract reversed the increase in locomotor activity induced by *** shell extract also suppressed the increase in locomotor activity induced by ***:Our results provide initial evidence that scallop shell extract reduces scopolamine-induced memory impairment and suppresses MK-801-induced hyperlocomotion.

关键词： Locomotor activity Memory impairment scallop shell Schizophrenia

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STUDIES ON INTERCROPPING OF PORPHYRA HAITANENSIS *** ET *** WITH BAY scallop ARGOPECTEN IRRADIANS LAMARCK

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Chinese Journal of Oceanology and Limnology 1993年第1期11卷 16-20页

作者：郑宝福李世英管明金 Institute of Oceanology Academia Sinica Qingdao 266071 Jiaonan Seafood Manufactory Jiaonan 266426

Results of the experiment of northward transplantation of Porphyra haitanensis showed thatintercrop of P. haitanensis with Bay scallop is feasible because the growth duration of both of them is about the same in August - *** use of cultivating area, lowering its cost and increasing its product per unit area as well as improving the ecological envronment are realized during intercrop.

关键词： intercrop P. haitanensis Bay scallop conchocelis sporeling

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Purification and Identification of Antioxidant Peptides from the scallop Skirts of Mimachlamys Nobilis

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Journal of Harbin Institute of Technology(New Series) 2017年第5期24卷 46-52页

作者： Quanfu Wang Yifan Wang Yanhua Hou Yifeng Xu Meihong Yan Haoyuan Li Yuanping Liu Yujin Li School of Marine Science and Technology Harbin Institute of Technology Shandong Provincial Engineering Technology Research Center of Marine Health Food National and Local United Engineering Laboratory of Marine Functional Food Development (Shandong)

The processes of scallop meats can produce a large amount of by-products like scallop skirts,which are rich in nutrients. This work aimed to obtain the information about antioxidant peptides derived from scallop skirts of Mimachlamys nobilis. The hydro-lysates obtained by trypsin exhibited the highest antioxidant activity( 75.6%,79.5% and 76.7% using DPPH,hydroxyl and superoxide anion radical scavenging activity assays,respectively). The antioxidant peptides( MNAP) were separated and purified using UF membranes,GFC processes and RP-HPLC,and the antioxidant activity of MNAP was identified to be 85.7% using DPPH radical scavenging activity assay. The peptides( MNAP) were composed of two peptides with their molecular weights2 855.6 Da and 3 007.2 Da using MALDI-TOF-MS,respectively. The results suggested that the scallop skirts of Mimachlamys nobilis could be explored as a source of antioxidant peptides.

关键词： Mimachlamys nobilis antioxidant peptides purification scallop skirts hydro-lysates

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TETRAPLOID INDUCTION BY INHIBITING MITOSIS I IN scallop CHLAMYS FARRERI

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Chinese Journal of Oceanology and Limnology 1999年第4期17卷 350-358,344页

作者：杨蕙萍郭希明陈再忠王永平

Tetraploid induction was carried out by inhibiting mitosis I in fertilized eggs of Chlamys farreri . Mitosis I was blocked with cold shock (5 7℃), Cytochalasin B (0.75 mg/L) and 6 dimethylaminopurine (6 DMAP) (60 75 mg/L) when 60% fertilized eggs released polar body II at 20℃. At 4 cells embryo stage, the ploidy was determined by counting chromosome number. In control groups, most embryos were diploids (72.22%) and aneuploids (24.78%). In Cytochalasin B, cold shock and 6 DMAP treated groups, tetraploids were respectively 10.51%, 4.08%, and 13.34%; aneuploids were 43.10%, 35.93% and 29.16%,and triploids were 7.84%, 8.52% and 18.33%. At D larva stage, ploidy was determined by flow cytometry (FCM). The ploidy analysis of day 2 larvae showed diploids in control group and also in three treated groups. Juvenile scallops (0.2 0.3cm) which were harvested in two control groups and two CB treated groups were all diploids through checking ploidy individually by FCM.

关键词： scallop Chlamys farreri tetraploid Cytochalasin B mitosis I

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POLYCULTURE OF scallop CHLAMYS FARRERI AND KELP LAMINRIA JAPONICA IN SUNGO BAY

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Chinese Journal of Oceanology and Limnology 1996年第4期14卷 322-329页

作者：方建光孙惠玲燕敬平匡世焕李锋 GaryF.Newkirk Jon Grant Yellow Sea Fisheries Research Institute Chinese Academy of Fisheries Science Qingdao 266003 Biology Department Dalhousie University Halifax Nova Scotia Canada B3H 4J1 Department of Oceanography Dalhousie University Halifax Nova Scotia Canada. B3H 4J1

Several polyculture models of scallop Chlamys farreri and kelp Laminaria japonica currently employedin Sungo Bay and other parts of northern China are described in this paper. Economic benefits of differ-ent polyculture models are analysed based on the growth rate, culture density and market price. In addi-tion, site selection, critical environmental conditions and polyculture problems are discussed in detail.

关键词： polyculture scallop kelp shallow sea economic benefit

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Application　of　purple　nonsulphur　bacterium　Rhodopseudomonas　***　spat　rearing　of　Bay　scallop　Argopecten　irradians　irradians

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Acta Oceanologica Sinica 1995年第2期14卷 301-303页

作者： $$$$

ＡｐｐｌｉｃａｔｉｏｎｏｆｐｕｒｐｌｅｎｏｎｓｕｌｐｈｕｒｂａｃｔｅｒｉｕｍＲｈｏｄｏｐｓｅｕｄｏｍｏｎａｓｓｐ．ｉｎｓｐａｔｒｅａｒｉｎｇｏｆＢａｙＳｃａｌｌｏｐＡｒｇｏｐｅｃｔｅｎｉｒｒａｄｉａｎｓｉｒｒａｄｉａ... 详细信息

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关键词： Application Argopecten Rhodopseudomonas scallop bacterium irradians nonsulphur purple rearing Bay

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MOLECULAR CLONING AND EXPRESSION ANALYSIS OF VITELLOGENIN GENE IN NOBLE scallop CHLAMYS NOBILIS

MOLECULAR CLONING AND EXPRESSION ANALYSIS OF VITELLOGENIN GE...

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第十八次国际扇贝大会

作者： Qian Zhang~(a,b),Huaiping Zheng~(a,b,*),Helu Liu~(a,b),Zewei Sun~(a,b) a Guangdong Provincial Key Laboratory of Marine Biology,Shantou University,Shantou, 515063,People’s Republic of China b Mariculture Research Center for Subtropical Shellfish & Algae,Department of Education of Guangdong,Shantou,515063,People’s Republic of China

＜正＞Vitellogenin（Vg） is a kind of sugar phospholipids protein which widely exists in oviparous animals,which is the main source of energy material during the embryonic *** is also a kind of ideal estrogen and estrogen-like mark,as a nonpolar molecular carrier,it not only can combine and transfer lipids,but also transfer thyroxine,vitamin,and carotenoids to oocytes,and participate in animal’s immune *** date,cDNA full-length clones and sequences of Vg have mainly focused on insects,crustaceans and *** mollusks,the work have been only carried out in Pacific oyster Crasostrea gigas,Pacific abalone Haliotis discus hannai,and zhikong scallop Chlamys farreri.

关键词： scallop Chlamys nobilis vitellogenin gene clone

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