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Pollinators exert positive selection on flower size on urban,but not on rural Scotch broom(Cytisus scoparius ***)

Journal of Plant Ecology 2018年第3期11卷 493-501页

作者： Robert Frederick Bode rebecca tong Department of Natural Sciences Saint Martin’s University405 Old Main5000 Abbey WayLaceyWA 98503USA

Aims Adaptive evolution of invasive species is both particularly exciting for the evolutionary biologist and worrisome for those interested in controlling or halting *** species often have a dis-tinct timeline and well-recorded population *** invaders encounter new environments,they undergo rapid adaptive *** aim in this study was to measure variation of floral size in the invasive shrub Cytisus scoparius(Scotch broom)and measure natural selection by pollinators on that *** research has found that this invasive plant is pollinator limited in Washington State and that declines in pollinator populations can contribute to local extinction in another invaded range(New Zealand).This plant is pollinated by both native and introduced species of bees,represent-ing a broad range of pollinator *** scoparius has a flower structure that is highly conducive to studies on pollinator choice,even in the absence of direct pollinator *** We surveyed urban and rural sites in and around the city of Olympia in Washington *** banner width,we were able to show that flower size varies substantially between plants but mini-mally within *** measuring the proportion of flowers that were‘tripped’,we could determine pollinator visitation rates and thus determine the level of selection due to pollinator choice *** Findings We found that *** is under natural selection by pollinators for increased flower ***,such positive natural selection was only seen in urban populations although it was consistent across two flowering *** populations of Scotch broom do not appear to be under selection on flower *** natural selection by pollinators on broom flowers could result in adaptive evolution into a new pollination niche by an invading species.A higher level of variation in broom flowers seen here than seen in previous works in native regions suggests that *** may be high

关键词： invasive evolution pollinator selection flower

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香港与新加坡之争从金融中心再到ESG中心

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商业周刊（中文版） 2022年第24期 34-36页

作者： Sheryl Tian tong Lee rebecca Choong Wilkins Kiuyan Wong 邵璐宁(译) 不详

为赢得亚洲头号金融中心的桂冠,香港与新加坡之间的角逐由来已久。如今,这个战场已转移到环境、社会和治理(ESG)领域,可能关乎数万亿美元的流向。随着政府和企业加大应对气候变化的投资,这两座城市都在力争成为可持续金融的区域基地,涉... 详细信息

为赢得亚洲头号金融中心的桂冠,香港与新加坡之间的角逐由来已久。如今,这个战场已转移到环境、社会和治理(ESG)领域,可能关乎数万亿美元的流向。随着政府和企业加大应对气候变化的投资,这两座城市都在力争成为可持续金融的区域基地,涉及从绿色债券到碳交易和资产管理的众多领域。

关键词：金融中心绿色债券可持续金融香港与新加坡碳交易政府和企业应对气候变化资产

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Superior Conjugative Plasmids Delivered by Bacteria to Diverse Fungi

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BioDesign Research 2022年第1期2022卷 151-165页

作者： Ryan R.Cochrane Arina Shrestha Mariana M.Severo de Almeida Michelle Agyare-Tabbi Stephanie L.Brumwell Samir Hamadache Jordyn S.Meaney Daniel P.Nucifora Henry Heng Say Jehoshua Sharma Maximillian P.M.Soltysiak Cheryl tong Katherine Van Belois Emma J.L.Walker Marc-AndréLachance Gregory B.Gloor David R.Edgell rebecca S.Shapiro Bogumil J.Karas Department of Biochemistry Schulich School of Medicine and DentistryThe University of Western OntarioLondonONCanada N6A 5C1 Department of Molecular and Cellular Biology University of GuelphGuelphONCanada N1G 2W1 Department of Biology The University of Western OntarioLondonOntarioCanada N6A 5B7

Fungi are nature’s recyclers,allowing for ecological nutrient cycling and,in turn,the continuation of life on *** fungi inhabit the human microbiome where they can provide health benefits,while others are opportunistic pathogens that can cause ***,members of the fungal kingdom,have been domesticated by humans for the production of beer,bread,and,recently,medicine and ***,the great untapped potential exists within the diverse fungal ***,many yeasts are intractable,preventing their use in biotechnology or in the development of novel treatments for pathogenic ***,as a first step for the domestication of new fungi,an efficient DNA delivery method needs to be ***,we report the creation of superior conjugative plasmids and demonstrate their transfer via conjugation from bacteria to 7 diverse yeast species including the emerging pathogen Candida *** create our superior plasmids,derivatives of the 57 kb conjugative plasmid pTA-Mob 2.0 were built using designed gene deletions and insertions,as well as some unintentional ***,a cluster mutation in the promoter of the conjugative gene traJ had the most significant effect on improving conjugation to *** addition,we created Golden Gate assembly-compatible plasmid derivatives that allow for the generation of custom plasmids to enable the rapid insertion of designer genetic ***,we demonstrated that designer conjugative plasmids harboring engineered restriction endonucleases can be used as a novel antifungal agent,with important applications for the development of next-generation antifungal therapeutics.

关键词： insertion continuation harbor

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