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Population isolation shapes plant genetics, phenotype and germination in naturally patchy ecosystems

Journal of Plant Ecology 2017年第4期10卷 649-659页

作者： Laurent De Vriendt Marc-AndréLemay Martine Jean sébastien renaut stéphanie Pellerin simon Joly François Belzile Monique Poulin Département de Phytologie Facultédes Sciences de l’Agriculture et de l’AlimentationUniversitéLaval2425 rue de l’agriculture QuébecQuébec G1V 0A6Canada Québec Center for Biodiversity science Department of BiologyMcGill UniversityStewart Biology Building1205 Dr.Penfield AvenueMontréal H3A 1B1Canada Institut de Biologie Intégrative et des systèmes(IBIs) UniversitéLaval1030 avenue de la MédecineQuébec G1V 0A6Canada Institut de recherche en biologie végétale Département des Sciences biologiquesUniversitéde Montréal4101 Sherbrooke EstMontréal H1X 2B2Canada Jardin botanique de Montréal 4101 Sherbrooke EstMontréal H1X 2B2Canada

Aims Habitat connectivity is important in conservation since isolation can diminish the potential of a population for adaptation and increase its risk of ***,conservation of naturally patchy ecosystems such as peatlands has mainly focused on preserving specific sites with exceptional characteristics,neglecting the poten-tial interconnectivity between *** order to better under-stand plant dynamics within a peatland network,we assessed the effect of population isolation on genetic distinctiveness,phenotypic variations and germination rates using the peatland-obligate white-fringed orchid(Platanthera blephariglottis).Methods Fifteen phenotypic traits were measured for 24 individuals per pop-ulation(20 distinct populations,Quebec,Canada)and germination rates of nearly 20000 seeds were *** distinctiveness was quantified for 26 populations using single nucleotide polymor-phism markers obtained via a pooled genotyping-by-sequencing *** isolation was measured as the distance to the nearest population and as the number of populations occurring in concentric buffer zones(within a radius of 2,5 and 10 km)around the studied *** Findings All phenotypic traits showed significant differences among *** results also indicated a pattern of isolation-by-distance,which suggests that seed and/or pollen exchange is restricted ***,all phenotypic traits,as well as a reduced germination rate,were correlated with either geographic isolation or genetic *** conclude that geographic iso-lation likely restricts gene flow,which in turn may affect ***,it is imperative that conservation programs take into account the patchy nature of such ecosystems,rather than targeting a few specific sites with exceptional character for preservation.

关键词： trait variation population genetics peatland orchid Platanthera blepharigottis genotyping by sequencing GBs

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Molecular investigation of Tuscan sweet cherries sampled over three years: gene expression analysis coupled to metabolomics and proteomics

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Horticulture Research 2021年第1期8卷 1-24页

作者： Roberto Berni sophie Charton sebastien Planchon sylvain Legay Marco Romi Claudio Cantini Giampiero Cai Jean-Francois Hausman Jenny renaut Gea Guerriero Department of Life sciences University of Sienavia P.A.Mattioli 4I-53100 SienaItaly TERRA Teaching and Research Center Gembloux Agro-Bio TechUniversity of Liège5030 GemblouxBelgium Environmental Research and Innovation Department Luxembourg Institute of Science and Technology41Rue du BrillL-4422 BelvauxLuxembourg Environmental Research and Innovation Department Luxembourg Institute of Science and Technology5rue BommelL-4940 HautcharageLuxembourg Istituto per la BioEconomia(IBE CNR) Dipartimento di Scienze BioAgroAlimentarivia Aurelia 4958022 FollonicaItaly

sweet cherry(Prunus avium L.)is a stone fruit widely consumed and appreciated for its organoleptic properties,as well as its nutraceutical *** here investigated the characteristics of six non-commercial Tuscan varieties of sweet cherry maintained at the Regional Germplasm Bank of the CNR-IBE in Follonica(Italy)and sampled ca.60 days post-anthesis over three consecutive years(2016-2017-2018).We adopted an approach merging genotyping and targeted gene expression profiling with *** complement the data,a study of the soluble proteomes was also performed on two varieties showing the highest content of *** identified the presence of flavanols and proanthocyanidins in highest abundance in the varieties Morellona and Crognola,while gene expression revealed that some differences were present in genes involved in the phenylpropanoid pathway during the 3 years and among the ***,proteomics on Morellona and Crognola showed variations in proteins involved in stress response,primary metabolism and cell wall *** the best of our knowledge,this is the first multi-pronged study focused on Tuscan sweet cherry varieties providing insights into the differential abundance of genes,proteins and metabolites.

关键词： metabolism maintained sweet

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微生物在温泉的硅化中的作用

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AMBIO－人类环境杂志 2004年第B12期33卷 528-534页

作者： Kurt O.Konhauser Brian Jones Vernon R. Phoenix Grant Ferris Robin W. renaut 张国梁（译）盖峥（校）加拿大阿尔伯塔（Alberta）大学加拿大阿尔伯塔大学的地质学教授圭尔夫（Guelph）大学多伦多大学地质学萨斯喀彻温大学的地质学不详

最近的实验研究指出微生物在硅化作用中扮演被动的角色。构成细胞外表面的有机功能团只是充当聚合或胶质硅在吸附过程中的异质生长成核点、而且由于不同微生物具有不同的细胞超微结构化学,硅化作用的种属特性模式出现了。除了它们的模... 详细信息

最近的实验研究指出微生物在硅化作用中扮演被动的角色。构成细胞外表面的有机功能团只是充当聚合或胶质硅在吸附过程中的异质生长成核点、而且由于不同微生物具有不同的细胞超微结构化学,硅化作用的种属特性模式出现了。除了它们的模板的作用,它们似乎并没有加快硅化作用的动力学过程,顶多它们对硅化作用的量只有些微的贡献。相反地,硅化作用源于超饱和热液流在温泉表面流出时发生的聚合。然而,微生物的确在温泉喷口周围形成硅质泉华(sinters)的构造方面施加了影响。不同的微生物有不同的生长模式,因而影响纹层作用(lamination)的风格,即影响泉华的原生孔隙度和后期成岩胶结的分布。

关键词：硅化作用微生物温泉生长模式动力学过程吸附过程结构化学功能团外表面

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