检索结果-南通市图书馆

Germplasm resources and genetic improvement of Akebia:A new fruit crop in China

在线全文

学校读者我要写书评

暂无评论

Plant Diversity 2023年第6期45卷 712-721页

作者： Shuai-Yu Zou Chen Feng Pu-Xin Gao Tong-Jian Li Tian-Jiao Jia Hongwen Huang Lushan Botanical Garden Chinese Academy of SciencesJiujiang 332900China School of Pharmacy and Life Science Jiujiang UniversityJiujiang 332005China South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China

Akebia species,belonging to Lardizabalaceae,are widespread from subtropical to temperate environments of China,Japan,and *** known Akebia species have medicinal and dietary value and have been widely cultivated as a new fruit crop in many areas of ***,compared with other crop species,the breeding improvement and commercial cultivation of Akebia remain in their *** review systematically introduces the present germplasm resources,geographical distribution,biological characteristics,interspecific and intraspecific cross compatibility,molecular biology,and breeding progress in Akebia *** plants are widely distributed in Shanxi,Henan,Sichuan,Chongqing,Hunan,Hubei,Jiangxi,Zhejiang,and Fujian provinces of China,and wild Akebia plants exhibit abundant phenotypic and genetic diversity due to their wide range of geographical distribution and high adaptability in different *** artificial hybridization experiments have been conducted in our Akebia germplasm resources *** results showed that there was no reproductive isolation between Akebia species,and fertile progeny could be *** synthesis of knowledge on these species provides insights for the rational development and utilization of these germplasm resources,and can facilitate the development of new breeding lines or varieties for commercial cultivation or ***,perspectives on Akebia breeding research are discussed and conclusions are *** review provided breeders with new insights into Akebia domestication and breeding,and we also proposed five basic steps in the domestication of new fruit crops.

关键词： Akebia Geographical distribution biological characteristics Cross compatibility Breeding strategy

Heterologous production of bioactive xenoacremone analogs in Aspergillus nidulans

在线全文

学校读者我要写书评

暂无评论

chinese Journal of Natural Medicines 2023年第6期21卷 436-442页

作者： LIU Zhiguo LI Wei ZHANG Peng SUN Yi YIN Wen-Bing State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Institute of chinese Materia Medica China Academy of Chinese Medical SciencesBeijing 100700China Savaid Medical School University of Chinese Academy of SciencesBeijing 100049China

Tyrosine-decahydrofluorene derivatives are a class of hybrid compounds that integrate the properties of polyketides and nonribosomal *** compounds feature a[6.5.6]tricarbocyclic core and a para-cyclophane ether moiety in their structures and exhibit anti-tumor and anti-microbial *** this study,we constructed the biosynthetic pathway of xenoacremones from Xenoacremonium sinensis ML-31 in the Aspergillus nidulans host,resulting in the identification of four novel tyrosine-decahydrofluorene analogs,xenoacremones I–L(1-4),along with two known analogs,xenoacremones A and ***,compounds 3 and 4 contained a 12-membered para-cyclophane ring system,which is unprecedented among tyrosine-decahydrofluorene analogs in *** successful reconstruction of the biosynthetic pathway and the discovery of novel analogs demonstrate the utility of heterologous expression strategy for the generation of structurally diverse natural products with potential biological activities.

关键词： Heterologous expression Xenoacremones Tyrosine-decahydrofluorene PKS-NRPS Natural products

Parahellenia,a new genus segregated from Hellenia(Costaceae)based on phylogenetic and morphological evidence

在线全文

学校读者我要写书评

暂无评论

Plant Diversity 2022年第4期44卷 389-405页

作者： Juan Chen Sijin Zeng Linya Zeng Khang Sinh Nguyen Jiawei Yan Hua Liu Nianhe Xia Guangdong Provincial Key Laboratory of Applied Botany/Guangdong Provincial Key Laboratory of Digital Botanical Garden South China Botanical GardenChinese Academy of Sciences510650GuangzhouPeople's Republic of China Department of Horticulture and Landscape Architecture Zhongkai University of Agriculture and Engineering510225GuangzhouPeople's Republic of China Institute of Ecology and biological resources Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoiVietnam Graduate University of Science and Technology Vietnam Academy of Science and TechnologyHanoiVietnam

Previous studies recognized three major lineages of the family Costaceae:a South American clade,an Asian clade and a Costus ***,the genus Hellenia within the Asian clade has been shown to be non-monophyletic and its morphology has not been studied ***,the complete plastid genomes of Hellenia species were obtained and the monophyly of Hellenia was tested through four different datasets in this *** phylogenomic analyses of Costaceae revealed that Hellenia is strongly supported as *** major clades are recovered,namely the Hellenia *** and the Parahellenia *** analyses based on an enlarged taxon sampling of the Asian clade using a two chloroplast markers dataset(trnK intron and trnL-F spacer)confirmed the paraphyly of ***,morphological analyses suggested that members of the Parahellenia subclade differ from the remaining Hellenia species in many characters including inflorescences,bracts,stigma,axillary buds,floral tubes and *** to the present molecular and morphological evidence,the latter subclade is recognized as a new genus,*** new species are described,four new combinations are made,and identification keys are also provided.

关键词： Molecular phylogenomics New genus New species Cheilocostus

Diet drives convergent evolution of gut microbiomes in bamboo-eating species

在线全文

学校读者我要写书评

暂无评论

Science China(Life sciences) 2021年第1期64卷 88-95页

作者： Guangping Huang Xiao Wang Yibo Hu Qi Wu Yonggang Nie Jiuhong Dong Yun Ding Li Yan Fuwen Wei CAS Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing100101China University of chinese academy of sciences Beijing100049China Beijing Milu Ecological Research Center Beijing100076China Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunming650223China State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing100101China

Gut microbiota plays a critical role in host physiology and *** coevolution between the host and its gut microbes facilitates animal adaptation to its specific ecological *** factors such as host diet and phylogeny modulate the structure and function of gut ***,the relative contribution of each factor in shaping the structure of gut microbiota remains *** giant(Ailuropoda melanoleuca)and red(Ailurus styani)pandas belong to different families of order *** have evolved as obligate bamboo-feeders and can be used as a model system for studying the gut microbiome convergent ***,we compare the structure and function of gut microbiota of the two pandas with their carnivorous relatives using 16S rRNA and metagenome *** found that both panda species share more similarities in their gut microbiota structure with each other than each species shares with its carnivorous *** indicates that the specialized herbivorous diet rather than host phylogeny is the dominant driver of gut microbiome convergence within *** analysis revealed that the symbiotic gut microbiota of both pandas possesses a high level of starch and sucrose metabolism and vitamin B12 *** findings suggest a diet-driven convergence of gut microbiomes and provide new insight into host-microbiota coevolution of these endangered species.

关键词： gut microbiome metagenome convergent evolution starch and sucrose metabolism vitamin B12 giant panda red panda

Rediscovery of the abyssal species Peniagone leander Pawson and Foell,1986(Holothuroidea:Elasipodida:Elpidiidae):the first record from the Mariana Trench area

在线全文

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 2020年第4期38卷 1319-1327页

作者： GONG Lin LI Xinzheng XIAO Ning HE Lisheng ZHANG Haibin WANG Yong Institute of Oceanology Chinese Academy of SciencesQingdao 266071China Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266200China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of chinese academy of sciences Beijing 100049China Department of Life Science Institute of Deep-sea Science and EngineeringChinese Academy of SciencesSanya 572000China

The elpidiid holothurian Peniagone leander Pawson and Foell,1986 is recorded for the first time from the Mariana Trench area at a depth of 5571 *** type description of this species was based on only in-situ *** is re-described and illustrated based on a preserved material and in-situ photographs taken on the *** 16S rRNA was also obtained from the specimen and submitted to *** is the fourth discovery of this species,extending its bathymetric range in the western Pacific Ocean.

关键词： Elpidiidae abyssal zone deep-sea holothurian benthopelagic species new record

Highly Aromatic Norditerpenoid Heterodimers and Monomers from Trigonostemon fragilis

在线全文

学校读者我要写书评

暂无评论

Engineering 2024年第7期38卷 144-154页

作者： Jun-Su Zhou Long Cheng Yuan Gao Zhan-Peng Ge Bin Zhou Jing-Ya Li Jin-Xin Zhao Jian-Min Yue State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Shandong Laboratory of Yantai Drug Discovery Bohai Rim Advanced Research Institute for Drug DiscoveryYantai 264117China

Four new norditerpenoid heterodimers with different dimerization patterns-namely,trigofragiloids A-C(denoted as compounds 1-3)and(+)-and(-)-trigofragiloid D(compound 4)-and three new phenanthrenone norditerpenoids-namely,trigofragiloids E-G(compounds 5-7)-were isolated from Trigonostemon *** 1 and 2 feature a novel heterodimeric carbon skeleton formed by the conjugation of a tetra-norditerpenoid and an ennea-norditerpenoid;they have been identified as class 2 atropisomers by means of quantum chemical *** 3 is an unprecedented phenylpropanoid-norditerpenoid adduct with a new dimerization ***(+)-and(-)-4 are the first example of S-shaped 1,4-dioxane-fused norditerpenoid *** by the structure elucidation of compound 4,two co-occurring analogues,actephilol A and epiactephilol A,were structurally revised as a pair of geometrical isomers and were identified as two pairs of enantiomers,(+)-and(-)-8 and(+)-and(-)-9,*** structures were characterized using a combined ***,compound 7 exhibits remarkable adenosine triphosphate-citrate lyase(ACLY)inhibition with a halfmaximal inhibition concentration(IC50)value of(0.46±0.11)lmol·L^(-1),as active as the positive control BMS-303141,and a molecular docking study offers deep insight into the interaction between compound 7 and ACLY.

关键词： Norditerpenoid heterodimer Trigonostemon fragilis Euphorbiaceae Trigofragiloid Structural revision Adenosine triphosphate-citrate lyase(ACLY) inhibitory activity

Laetmonice iocasica ***.,a new polychaete species(Annelida:Aphroditidae)from seamounts in the tropical Western Pacific,with remarks on *** Grube,1877

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 2021年第5期39卷 1805-1816页

作者： Xuwen WU Pat HUTCHINGS Anna MURRAY Kuidong XU Laboratory of Marine Organism Taxonomy and Phylogeny Shandong Province Key Laboratory of Experimental Marine BiologyInstitute of OceanologyCenter for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China Australian Museum Australian Museum Research InstituteSydney NSW 2000Australia biological sciences Macquarie UniversityNorth Ryde 2109Australia University of chinese academy of sciences Beijing 100049China

Laetmonice Kinberg,1856 is a remarkable genus characterized by having harpoon notochaetae in the polychaete family *** describe a new species of Laetmonice,Laetmonice iocasica ***.,found from seamounts on the Caroline Ridge in the tropical Western *** new species is readily distinguished from congeners,particularly those distributed in the Indo-Pacific Ocean by possessing45 segments with 18 pairs of elytra,and the tuberculated harpoon notochaetae in the elytrigerous segments,which are replaced by tuberculated notochaetae without recurved fangs on segments 4 and *** iocasica *** closely related to *** Grube,1877,but differs in both morphology and the genetic distance of the mitochondrial cytochrome oxidase subunit I(COI)*** producta Grube,1877 contained five varieties reported in various marine areas,which have been raised to species ***,the records of *** from the Sagami B ay and Suruga B ay in Japan and in the south-eastern Australia remain obscure and probably represent a different *** data indicate that ***,which was originally described from Kerguelen Islands in the Southern Ocean and later commonly found on the Antarctic shelf,is probably distributed only at high latitudes of the Southern Hemisphere.

关键词： Polychaeta taxonomy biodiversity deep-sea

Synthesis of N-alkyl substituted iminosugars from D-ribose

在线全文

学校读者我要写书评

暂无评论

chinese Chemical Letters 2018年第1期29卷 73-75页

作者： Haibo Wang Yang Pan Qin Tang Wei Zou Huawu Shao Natural Products Research Center Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 China Institute for biological sciences National Research Council of Canada Ottawa KIA OR6 Canada zhejiang Hongyuan Pharmaceutical Co. Ltd. Linhai 317000 China Graduate School of chinese academy of sciences Belting 100049 China

An effective and facile method for the synthesis of N-alkylated hydroxylpyrrolidine and hydroxylpiper- idine is described, A number of N-alkyl substituted iminosugars were prepared using iodine-induced intramolecular ... 详细信息

关键词： lminosugar Pyrrolidine Piperidine Glycosidase D-Ribose

Remarkable enhancement of bleomycin production through precise amplification of its biosynthetic gene cluster in Streptomyces verticillus

在线全文

学校读者我要写书评

暂无评论

Science China(Life sciences) 2022年第6期65卷 1248-1256页

作者： Hong Li Wenyan Gao Yifan Cui Yuanyuan Pan Gang Liu State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of chinese academy of sciences Beijing 100049China The Innovative academy of Seed Design Chinese Academy of SciencesBeijing 100864China

Amplification of biosynthetic gene clusters is important to increase secondary metabolite ***,the copy number of amplified gene clusters is difficult to control *** this study,the tandem amplification of a 70 kb bleomycin biosynthetic gene cluster was precisely regulated through the combined strategy of a Zou A-dependent DNA amplification system and double-reporter-guided recombinant selection in Streptomyces verticillus *** production of bleomycin in the recombinant strain containing six copies of the bleomycin gene cluster was 9.59-fold higher than that in the wild-type *** combined strategy used in this study is powerful and applicable for precisely regulating the amplification of gene clusters and improving the corresponding secondary metabolite production.

关键词： bleomycin precise regulation amplification of gene cluster strain improvement