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Wind-dispersed seeds blur phylogeographic breaks:The complex evolutionary history of Populus lasiocarpa around the Sichuan Basin

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Plant Diversity 2023年第2期45卷 156-168页

作者： Xue Li Markus Ruhsam Yi Wang Hong-Ying Zhang Xiao-Yan Fan Lei Zhang Jing Wang Kang-Shan Mao Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education College of Life SciencesState Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu 610065SichuanPR China Royal botanic garden Edinburgh 20A Inverleith RowEdinburgh EH35LRUK

The strength of phylogeographic breaks can vary among species in the same area despite being subject to the same geological and climate history due to differences in biological *** important phylogeographic breaks exist around the Sichuan Basin in Southwest China but few studies have focused on wind-dispersed ***,we investigated the phylogeographic patterns and the evolutionary history of Populus lasiocarpa,a wind-pollinated and wind-dispersed tree species with a circum-Sichuan Basin distribution in southwest *** sequenced and analyzed three plastid DNA fragments(ptDNA) and eight nuclear microsatellites(nSSRs) of 265 individuals of *** from 21 populations spanning the entire distribution *** patterns based on nSSR data revealed that there are three genetic groups in *** is consistent with the three phylogeographic breaks(Sichuan Basin,the Kaiyong Line and the 105°E line),where the Sichuan basin acts as the main barrier to gene flow between western and eastern ***,the distribution pattern based on ptDNA haplotypes poorly matched the phylogeographic breaks,and wind-dispersed seeds may be one of the main contributing *** distribution modelling suggested a larger potential distribution in the last glacial maximum with a severe bottleneck during the last interglacial.A DIYABC model also suggested a population contraction and expansion for both western and eastern *** results indicate that biological traits are likely to affect the evolutionary history of plants,and that nuclear molecular markers,which experience higher levels of gene flow,might be better indicators of phylogeographic breaks.

关键词： Phylogeography Sichuan basin Populus lasiocarpa Kaiyong line Demographic history

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New records of Graphidaceae(lichenized fungi)from the Western Ghats of Kerala state,India

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Studies in Fungi 2021年第1期6卷 213-223页

作者： Biju H Sabeena A Nayaka S Microbiology Division Jawaharlal Nehru Tropical Botanic Garden and Research InstitutePalodeThiruvananthapuram 695562Kerala Lichenology laboratory Plant Diversity Systematics and Herbarium DivisionNational Botanical Research InstituteLucknow 226001Uttar Pradesh

In the present paper,15 lichenized fungal species belonging to family Graphidaceae are described,of which Ocellularia albomaculata,***,***,***,*** and *** are new records to Indian lichen biota and Pallidogramme chrysenteron is new to Peninsular India,whereas Asteristion alboolivaceum,Chapsa hiata,Diploschistes rampoddensis,Fissurina rubiginosa,Pseudochapsa phlyctidioides,Thelotrema canarense,*** and *** are new to lichen biota of Kerala state.

关键词： Ascomycota Biodiversity Taxonomy

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Anti-lipid droplets accumulation effect of Annona montana(mountain soursop)leaves extract on differentiation of preadipocytes

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BIOCELL 2022年第3期46卷 567-578页

作者： IVY LEUNG MARIA-LUISA VEISAGA MARGARITA ESPINAL WEI ZHANG ROBERT BARNUM MANUEL ALEJANDRO BARBIERI Department of Biological Sciences Florida International UniversityMiami33199USA Biomolecular Sciences Institute Florida International UniversityMiami33199USA Fairchild Tropical botanic garden Coral Gables33156USA International Center of Tropical Botany Florida International UniversityMiami33199USA

The Annona genus is a member of Annonaceae,one of the largest families of plants across tropical and subtropical *** family has been used in several ethnomedicinal practices to treat a multitude of human ***,the molecular mechanism underlying its effect on the lipid droplet formation and on the expression of adipogenic markers of this plant remain to be *** this study,we examined whether the extracts from the aerial part of Annona montana affect in vitro differentiation of *** our investigations,both mouse embryo fibroblast 3T3-L1 and normal human primary subcutaneous preadipocytes were incubated with Annona montana extracts(-and its subfractions-)and then analyzed on preadipocyte differentiation,lipid content,lipid droplet size and number,the expression of adipogenic-specific transcriptional factors,as well as cell *** our examinations,we found the Annona montana ethyl acetate extract to exhibit a potent inhibitory effect on adipogenesis,without affecting cell survival,in a dose-dependent *** inhibitory effects included a significant decrease in the accumulation of lipid content by both a dramatic reduction of size and number of lipid *** extract strongly attenuated the expression of PPARγand *** also inhibited the expression of CEBPα,FAS,and Akt without influencing Erk1/2 *** findings suggest that specifically,the Annona montana ethyl acetate extract has a prominent inhibitory effect in cellular pathways of adipocyte differentiation by modulating specific gene expression,which is known to perform a pivotal role during adipogenesis.

关键词： Annona montana extracts Phytochemical analysis Adipogenesis Lipid droplets Adipogenic-specific markers

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A hypothesis for a novel role of RIN1-the modulation of telomerasefunction by the MAPK signaling pathway

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BIOCELL 2020年第4期44卷 525-534页

作者： PATRIC HAMBLETON MANUEL ALEJANDRO BARBIERI Department of Biological Sciences Florida International UniversityMiami33199USA Biomedical Science Institute Florida International UniversityMiami33199USA Fairchild Tropical botanic garden Miami33156USA International Center of Tropical Botany Florida International UniversityMiamiFL33199USA

Cancerous cells display abnormalities in the signal transduction pathways responsible for responding to extracellular growth factors,or *** that alter proteins involved in these types of pathways can lead to inappropriate or unregulated cell growth,and therefore predispose the cell to become *** critical role of the Ras/mitogen-activated protein kinase(MAPK)pathway in transducing growth signals to the interior of the cell and subsequently stimulating cell growth and proliferation is underscored by the fact that roughly one quarter of all human tumors contain mutant forms of Ras proteins.A particular focus on the signaling and membrane trafficking adaptor protein known as Ras interference 1(RIN1)will reveal how this protein can potentially play a significant role in the development of the cancerous phenotype in certain cell *** equal interest is the possible connection between the Ras/MAPK pathway,and subsequent expression and enzymatic activity of telomerase–a key enzyme known to be overexpressed in roughly 85%of all ***1 is a 783 amino acid(84 kDa)cytosolic protein that is involved in key steps of growth factor receptormediated endocytosis and can potentially moderate signaling through the MAPK ***1,with its unique ability to compete directly with Raf for activation by Ras,could potentially influence signaling through more than one of the MAPK *** so,RIN1 may then be able to exert a precise and selective effect on the downstream signal(s)of a MAPK target such as telomerase.

关键词： Cancer Regulation Pathway Telomere

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A new species of the genus Micryletta(Anura,Microhylidae) from Hainan Island, China

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Zoological Research 2021年第2期42卷 234-240页

作者： Jian-Huan Yang Nikolay A.Poyarkov Kadoorie Conservation China Kadoorie Farm and Botanic GardenTai PoHong Kong SARChina Faculty of Biology Department of Vertebrate ZoologyMoscow State UniversityMoscow 119234Russia Laboratory of Tropical Ecology Joint Russian-Vietnamese Tropical Research and Technological CenterHanoiVietnam

DEAR EDITOR,We report on a new amphibian species of the genus Micryletta from Hainan Island, China, based on morphological and molecular analyses. The new species, Micryletta immaculata sp. nov., is diagnosed by a combination of the following morphological characters: medium-sized within genus(SVL23.3–24. mm in males, n=3;27.7–30.1 mm in females, n=2).

关键词： nov. Island new

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Problems in the Field of Systematics and Investigation of Conifers in Russia

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Journal of Agricultural Science and Technology(B) 2013年第12期3卷 880-886页

作者： Larisa Orlova Gennady Firsov Department of Herbarium Botanic Garden of the Komarov Botanical Institute of Russian Academy of Sciences Saint-Petersburg197376 Russia

The largest and most important family in Russian conifers is Pinaceae （27-29 species）. The most important problems in the field of systemitics concern some critical taxa. In the result of author＇s research, the new signs of vegetative and reproductive organs have been checked out and elaborated. It leads to the clarifying of new taxonomic status and geographical distribution of certain critical taxa. A set of species are threatened and need special measures which are included into the Red Data Book of Russian Federation. for their conservation. There are 13 species and one variety

关键词： Conifers of Russia Pinaceae systematics arboriculture conservation.

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Urban niche dynamics of Kaifeng city

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Journal of Geographical Sciences 2007年第2期17卷 221-233页

作者： Ding Shengyan1, Li Zhiheng1,2,3 1. College of Environment & Planning, Henan University, Kaifeng 475001, China 2. Xishuangbanna Tropical botanic garden, CAS, Kunming 650223, China 3. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China College of Environment & Planning Henan University Kaifeng China Xishuangbanna Tropical botanic garden CAS Kunming China Graduate School of the Chinese Academy of Sciences Beijing China

Niche theory is one of the most important ecological theories. It is widely applied to analyzing such phenomena as competition among, and evolution of, urban ecosystem functional modules. This paper describes a study concerning＇different functional modules of Kaifeng city urban ecosystem. Niche theory and techniques were used to analyze the changes of these functional modules in the period 1994-2003. The results showed that, in the period 1994-2003：（1） Niche value of the atmospheric environment and urban virescence modules increased, while niche value of the water environment and sound environment modules decreased; （2） niche value of the tertiary industry module increased, niche value of the secondary industry module decreased, while niche value of the primary industry module showed little change; and （3） niche value of the infrastructure, resource distribution, and production ＆ social security modules increased, while niche value of the population module decreased. This study may contribute to macroscopic planning of urban functional modules, economic development, and environmental protection.

关键词： niche pattern functional modules dynamic Kaifeng city

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National botanical gardens at the forefront of global plant conservation

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The Innovation 2023年第5期4卷 1-2页

作者： Hai Ren Alexandre Antonelli South China botanical garden of the Chinese Academy of Sciences Guangzhou 510650China South China National botanical garden Guangzhou 510650China Royal botanic gardens KewRichmondLondonTW93AE SurreyUK Gothenburg Global Biodiversity Center Department of Biological and Environmental SciencesUniversity of GothenburgBox 46140530 GoteborgSweden|

Global changes in land use driven by demands on food,energy,and other resources in response to a rapidly increasing human population have collectively led to escalating environmental challenges,including biodiversity loss,global warming,environmental pollution,and ecosystem *** present,biodiversity is seriously threatened at global,regional,and local scales,which,in turn,threatens our own *** is a global asset of immense material and non-material value,providing us with food,medicine,building materials,fiber,and the ecological environment required for our well-being and health.

关键词： collective pollution seriously

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Phylogenetic and climatic constraints drive flowering phenological patterns in a subtropical nature reserve

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Journal of Plant Ecology 2015年第2期8卷 187-196页

作者： Nan-Cai Pei WJohn Kress Bu-Feng Chen David LErickson Khoon Meng Wong Jin-Long Zhang Wan-Hui Ye Zhong-Liang Huang Dian-Xiang Zhang Forest Ecosystem Station of the Pearl River Delta State Forestry AdministrationResearch Institute of Tropical ForestryChinese Academy of Forestry682 Guangshan Road 1Tianhe DistrictGuangzhou 510520China Department of Botany MRC-166National Museum of Natural HistorySmithsonian InstitutionP.O.Box 37012WashingtonDC 20013-7012USA Singapore botanic gardens 1 Cluny RoadSingapore 259569Singapore Flora Conservation Department Kadoorie Farm and Botanic GardenLam Kam RoadTai PoNTHongkongChina South China botanical garden Chinese Academy of Sciences723 Xingke RoadTianhe DistrictGuangzhou 510650China

Aims Exploring flowering patterns and detecting processes are essential when probing into the nature of reproductive traits during the life history and the interactions among different evolutionary *** patterns are believed to be influenced by many factors,but quantifying these impacts at the community-level remains poorly *** We investigated the flowering patterns based on long-term her-barium records in a given area from subtropical forest regions in southern *** obtained 5258 herbarium voucher specimens collected from the Dinghushan National Nature reserve(DNNr)belonging to 166 families,943 genera and 2059 species and exam-ined the month when each species was flowering during the period *** Findings The results showed that plants flowered sequentially almost through-out the whole year,showing the characteristics of subtropical evergreen broad-leaved *** spectrums of the entire flora and the four life forms exhibited a clear unimodality that is probably typical of subtropical forest *** pat-terns of the DNNr were positively correlated with mean rainfall,mean air temperature and mean sunshine *** flowering dates of the 38 large species-rich families ranged from early april to late august;25 families exhibited significant unimodal distribution patterns,whereas the remaining families were unclear or *** flowering dates of the 10 most species-rich genera ranged from middle may to later *** the results are consist-ent with climatic factors playing a general role in flowering patterns,median flowering dates varied significantly among species-rich families and genera,suggesting that phylogenies could provide spe-cific constraints in subtropical forests.

关键词： environmental driver flowering phenology phylogenetic effect reproductive trait subtropical forest

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Comprehensive phylogenetic analyses of Orchidaceae using nuclear genes and evolutionary insights into epiphytism

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Journal of Integrative Plant Biology 2023年第5期65卷 1204-1225页

作者： Guojin Zhang Yi Hu Ming-Zhong Huang Wei-Chang Huang Ding-Kun Liu Diyang Zhang Haihua Hu Jason L.Downing Zhong-Jian Liu Hong Ma Department of Biology 510 Mueller LaboratoryHuck Institutes of the Life SciencesThe Pennsylvania State UniversityUniversity ParkPennsylvania 16802USA Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture Fujian Agriculture and Forestry UniversityFuzhou 350002China Shanghai Chenshan botanical garden SongjiangShanghai 201602China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China Fairchild Tropical botanic garden Coral GablesFlorida 33156USA

Orchidaceae(with>28,000 orchid species)are one of the two largest plant families,with economically and ecologically important species,and occupy global and diverse niches with primary distribution in *** orchids,70%grow on other plants as epiphytes;epiphytes contribute up to~50%of the plant diversity in rainforests and provide food and shelter for diverse animals and microbes,thereby contributing to the health of these *** account for over two-thirds of vascular epiphytes and provide an excellent model for studying evolution of *** phylogenetic studies of Orchidaceae and subgroups have;been crucial for understanding relationships among many orchid lineages,although some uncertainties *** example,in the largest subfamily Epidendroideae with nearly all epiphytic orchids,relationships among some tribes and many subtribes are still controversial,hampering evolutionary analyses of *** we obtained 1,450 low-copy nuclear genes from 610 orchid species,including 431 with newly generated transcriptomes,and used them for the reconstruction of robust Orchidaceae phylogenetic trees with highly supported placements of tribes and *** also provide generally wellsupported phylogenetic placements of 131 genera and 437 species that were not sampled by previous plastid and nuclear phylogenomic *** clock analyses estimated the Orchidaceae origin at~132 million years ago(Ma)and divergences of most subtribes from 52 to 29 *** reconstruction supports at least 14 parallel origins of epiphytism;one such origin was placed at the most recent common ancestor of~95%of epiphytic orchids and linked to modern *** occurrences of rapid increase in the diversification rate were detected within Epidendroideae near and after the K-Pg boundary,contributing to~80%of the Orchidaceae *** study provides a robust and the largest family-wide Orchidaceae nuclear phylogenetic tree thus far and

关键词： convergence epiphytes evolution orchids parallel rainforest phylogenomics transcriptome

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