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UVR8-TCP4-LOX2 module regulates UV-B tolerance in Arabidopsis

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Journal of Integrative Plant Biology 2024年第5期66卷 897-908页

作者： Cheng Li Jiancan Du Huini Xu Zhenhua Feng Caspar CCChater Yuanwen Duan Yongping Yang Xudong Sun Yunnan Key Laboratory of Crop Wild Relatives Omics The Germplasm Bank of Wild SpeciesKunming Institute of BotanyChinese Academyof SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China CAs Key Laboratory of tropical Plant Resources and Sustainable Use Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesKunming 650223China Faculty of Life Science and Technology Kunming University of Science and TechnologyKunming 650031China Royal botanic gardens KewRichmondSurrey TW93AEUK

The phytohormone jasmonate(JA)coordinates stress and growth responses to increase plant survival in unfavorable *** JA can enhance plant UV-B stress tolerance,the mechanisms underlying the interaction of UV-B and JA in this response remain *** this study,we demonstrate that the UV RESISTANCE LOCUS 8-TEOSINTE BRANCHED1,Cycloidea and PCF 4-LIPOXYGENASE2(UVR8-TCP4-LOX2)module regulates UV-B tolerance dependent on JA signaling pathway in Arabidopsis *** show that the nucleus-localized UVR8 physically interacts with TCP4 to increase the DNA-binding activity of TCP4 and upregulate the JA biosynthesis gene ***,UVR8 activates the expression of LOX2 in a TCP4-dependent *** genetic analysis also provides evidence that TCP4 acts downstream of UVR8 and upstream of LOX2 to mediate plant responses to UV-B *** results illustrate that the UV-B-dependent interaction of UVR8 and TCP4 serves as an important UVR8-TCP4-LOX2 module,which integrates UV-B radiation and JA signaling and represents a new UVR8 signaling mechanism in plants.

关键词： anthocyanin accumulation jasmonic acid TCP4 UV-B UVR8

How to fill the biodiversity data gap:Is it better to invest in fieldwork or curation?

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Plant Diversity 2024年第1期46卷 39-48页

作者： Carlos A.Vargas Marius Bottin Tiina Sarkinen James E.Richardson Marcela Celis Boris Villanueva Adriana Sanchez Programa de Biología Facultad de Ciencias NaturalesUniversidad del RosarioBogotaD.C.Colombia Subdireccion Científica Jardín Botanico de Bogota“Jose Celestino Mutis”BogotaD.C.Colombia Independent Researcher BogotaD.C.Colombia tropical Diversity Section Royal Botanic Garden EdinburghUK School of Biological Earth and Environmental SciencesUniversity College CorkCorkIreland Departamento de Química y Biología Universidad del NorteKm.5 Vía Puerto ColombiaArea Metropolitana de Barranquilla 081007Colombia

Data gaps and biases are two important issues that affect the quality of biodiversity information and downstream *** how best to fill existing gaps and account for biases is necessary to improve our current information most *** current main approaches for obtaining and improving data include(1)curation of biological collections,and(2)***,the comparative effectiveness of these approaches in improving biodiversity data remains little *** used the Flora de Bogota project to study the magnitude of change in species richness,spatial coverage,and sample coverage of plant records based on curation versus *** process of curation resulted in a decrease in species richness(synonym and error removal),but it significantly increased the number of records per *** contributed to a slight increase in species richness,via accumulation of new ***,curation led to increases in spatial coverage,species observed by locality,the number of plant records by species,and localities by species compared to ***,curationwas more efficient in producing new information compared to fieldwork,mainly because of the large number of records available in *** recommend intensive curatorial work as the first step in increasing biodiversity data quality and quantity,to identify bias and gaps at the regional scale that can then be targeted with *** stepwise strategy would enable fieldwork to be planned more costeffectively given the limited resources for biodiversity exploration and characterization.

关键词： Colombia Flora de Bogota Sample coverage Species richness tropical Andes

Musa chunii Hkkinen,a new species (Musaceae) from Yunnan,China and taxonomic identity of Musa rubra

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Journal of Systematics and Evolution 2009年第1期47卷 87-91页

作者： Markku HKKINEN botanic garden University of Helsinki Xishuangbanna tropical botanical garden Chinese Academy of Sciences

The center of diversity of the genus Musa (Musaceae) is in Southeast Asia, a region not studied in detail and where new species and varieties continue to be reported. A new wild banana species, M. chunii Hkkinen from Yunnan, China is described and illustrated based on observed morphological characteristics in the field. This extremely rare new species was only found in Tongbiguan Nature Reserve, Dehong District, West Yunnan. A key to M. chunii and related taxa is provided. In addition, critical notes regarding M. rubra Kurz identity are given.

关键词： Musa Musa chunii Hkkinen Musa rubra Kurz Musaceae Rhodochlamys Southeast Asia wild banana

Bird guild loss and its determinants on subtropical land-bridge islands, China

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Chinese Birds 2015年第2期6卷 99-106页

作者： Zhifeng Ding Kenneth James Feeley Huijian Hu Ping Ding The Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education College of Life Sciences Zhejiang UniversityZijin’gang Campus Guangdong Entomological Institute & South China Institute of Endangered Animals Department of Biological Sciences Florida International University Center for tropical Plant Conservation Fairchild Tropical Botanic Garden

Background: The guild concept is useful for understanding the community structure in a land-bridge island system,but most fragmentation studies have focused only on the importance of island area and isolation, other island attributes such as perimeter-area ratio(PAR) were overlooked or ***: We have adopted a guild approach to investigate the impacts of island attributes on bird guild richness on a set of 41 recently isolated land-bridge islands in the Thousand Island Lake(TIL), ***: We found insectivores had the largest number of species(34 species), fol owed by understory foraging guilds(28 species), omnivores(27 species) and canopy guilds(25 species). Furthermore, our data showed that migrants and residents responded equal y to island area, insectivores and understory guilds were sensitive to island area but omnivores and canopy guilds were not very sensitive. Most guild richness was determined by island area, except for omnivores and canopy ***: Although PAR or habitat diversity found to be important for bird species richness, our results highlight the importance of island area in maintaining bird diversity in fragmented island systems.

关键词： Bird guilds Island area Land-bridge islands PAR Thousand Island Lake z values

Tsaokoin,a New Bicyclic Nonane from Amomum tsao-ko

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Chinese Chemical Letters 2001年第3期12卷 227-230页

作者： Qi Shi SONG Rong Wei TENG Xi Kui LIU Chong Ren YANG Kunming Institute of Botany Chinese Academy of SciencesKunming 650204 Xishuangbanna tropical botanic garden Chinese Academy of SciencesKunming 650223

7α-Hydroxy-8β,9β-H- cis- bicyclo[4,3,0]non-4-ene-4-aldehyde, a nonane compound with novel skeleton, named tsaokoin, was isolated from the fruits of Amomum tsao-ko. Its structure was established on the basis of spec... 详细信息

关键词： 7α-Hydroxy-8β 9β-H- cis- bicyclo[4.3.0]non-4-ene-4-aldehyde tsaokoin Amomum tsao-ko bicyclononane

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

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

The variation and regional differences of precipitation in the Longitudinal Range-Gorge the Region

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Chinese Science Bulletin 2007年第A02期52卷 59-73页

作者： HE DaMing LI ShaoJuan ZHANG YiPing Asia Intemational Rivers Center Yunnan University Kunming 650091 China Xishuangbanna tropical botanic garden Chinese Academy of Sciences Kunming 650223 China

这份报纸基于记录在 36 个气象学的车站在 1960 ～ 2001 期间观察了的每日的降雨在纵的范围峡区域(LRGR ) 检验降水的地区性的差别。在不同空间、时间的规模的降水的地区性的差别被分析，在完成在 LRGR 的特殊走廊障碍功能下面。结果显... 详细信息

这份报纸基于记录在 36 个气象学的车站在 1960 ～ 2001 期间观察了的每日的降雨在纵的范围峡区域(LRGR ) 检验降水的地区性的差别。在不同空间、时间的规模的降水的地区性的差别被分析，在完成在 LRGR 的特殊走廊障碍功能下面。结果显示很靠近的连接在地区性的差别和走廊障碍功能之间存在：在北 LRGR 的大多数区域(> 26 湩？

关键词：地区差异性纵向岭谷区地域性走廊

The tropical-subtropical evergreen forest transition in East Asia:An exploration

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Plant Diversity 2020年第4期42卷 255-280页

作者： Peter Ashton Hua Zhu Arnold Arboretum Harvard UniversityRoyal Botanic GardensKewUK Center for Integrative Biology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesYunnanPR China

The transition from tropical to subtropical(warm temperate)evergreen forests is more clearly apparent in East Asia,fromNepal to the western Pacific coast,than elsewhere in the *** review the nature of this transition and hypothesize the physical,ultimately climatic,factors thatmay maintain it,with a special focus on how the increasing instability and warming of climates will affect these forests.A primary climatic mediator of the transition is proposed,thereby offering a testable hypothesis for the climateeforest transition *** is known of this transition is summarized in context of the primary climatic mediators of elevational zonation of forest formations in equatorial Asia to the tree line,in the Himalaya at the India-Indo-Burma northern tropical margin,and as both elevational and latitudinal zonation in southern *** secondary edaphic and other physical changes are described for the Himalaya,and hypothesized for southern *** forest ecotones are seen to be primarily defined by tree floristic change,on which account changes in structure and physiognomy are *** montane tropical-subtropical transition in the Himalaya is narrowand observed to correlate with an as yet ill-defined frost line.A distinct tropical-subtropical transition forest is recognized in the southwest *** is a total change in canopy species at the Himalayan ecotone,but subcanopy tropical species persist along an elevational decline of c.400 *** latitudinal transition in South China is analogous,but here the tropical subcanopy component extends north over ten degrees latitude,albeit in *** tropical-subtropical transition is uniquely clear in East Asia because here alone a tropical wet summer-dry winter monsoon extends to 35north latitude,encompassing the subtropical evergreen forest,whereas subtropical evergreen forests elsewhere exist under drier temperate summer climate regimes.

关键词： tropical Subtropical Forest transition Ecotone East Asia