Poaceae pollen is abundant in fossil records and is often used as a paleoclimatic indicator. A common interpretation is to link increases in Poaceae pollen abundance to increased regional aridity. However, the representation of Poaceae pollen is influenced by a number of factors, ... trees are likely to mask the contribution of Poaceae pollen, whereas floras that are primarily entomophilous are ... a pollen spectrum containing an over-representation of Poaceae. As most fossil pollen data are drawn from ...
Tópico(s): Geological formations and processes
2002 - Elsevier BV | Palaeogeography Palaeoclimatology Palaeoecology
Matthew A. Campbell, Wei Zhu, Ning Jiang, Haining Lin, Shu Ouyang, Kevin L. Childs, Brian J. Haas, John P. Hamilton, C. Robin Buell,
... evolutionarily conserved among six diverse species within the Poaceae yet lack significant sequence similarity with plant species outside the Poaceae. This set of evolutionarily conserved and lineage-specific rice genes is termed conserved Poaceae-specific genes (CPSGs) to reflect the presence of significant sequence similarity across three separate Poaceae subfamilies. The vast majority of rice CPSGs (86. ... significant sequence similarity in a species outside the Poaceae. Multiple sequence alignments of the CPSGs with sequences ...
Tópico(s): Plant Disease Resistance and Genetics
2007 - Oxford University Press | PLANT PHYSIOLOGY
Produção Nacional
Revisado por pares
Thales D. Leandro, Tatiane Maria Rodrigues, Lynn G. Clark, Vera Lúcia Scatena,
... in at least seven of 12 subfamilies of Poaceae and are considered a synapomorphy for the family; ... homologies within the graminid clade (= Flagellariaceae + [(Joinvilleaceae + Ecdeiocoleaceae) + Poaceae]) or among subfamilies of Poaceae. A developmental study was therefore carried out, including 20 species in three families (Flagellariaceae, Joinvilleaceae and Poaceae), representing the earlier-diverging and derived branches within the graminid clade and Poaceae.Light microscopy was combined with scanning electron microscopy, ...
Tópico(s): Mediterranean and Iberian flora and fauna
2018 - Oxford University Press | Annals of Botany
... Access Isoenzyme variation in the grass genus Elymus (Poaceae) VELLO JAASKA, Corresponding Author VELLO JAASKA Department of ... lanceolatus, E. dentatus ssp. ugamicus, and E. drobovii (Poaceae: Triticeae). Genome. 32: 468– 474. Jensen, K. B. ... pendulinus, E. pendulinus ssp. multiculmis, and E. parviglume (Poaceae: Triticeae). Bot. Gaz. 151: 245– 251. Jensen, K. ... Tzvelev and E. grandiglumis (Keng) A. Love (Triticeae: Poaceae). Genome. 33: 563– 570. Jensen, K. B. and ... and taxonomy of Elymus gmelinii and E. strictus (Poaceae: Triticeae). Bot. Gaz. 150: 84– 92. Jensen, K. ...
Tópico(s): Genetic Mapping and Diversity in Plants and Animals
2008 - BioMed Central | Hereditas
Christine Desfeux, Sandrine Maurice, Jean-Pierre Henry, Bernard Lejeune, Pierre‐Henri Gouyon,
... L and Oliveira R (2021) Phylogenetics of Piresia (Poaceae: Bambusoideae) reveals unexpected generic relationships within Olyreae with ... R (2019) Assessing the molecular diversity of Hildaea (Poaceae, Panicoideae): reaching a compromise between the splitter and ... deeper into the phylogenetics of the herbaceous bamboos (Poaceae, Bambusoideae, Olyreae): evaluation of generic boundaries within the ... systematics and distribution of the Raddia-Sucrea lineage (Poaceae, Olyrinae), with a new monotypic and endangered herbaceous ...
Tópico(s): Fern and Epiphyte Biology
1996 - Royal Society | Proceedings of the Royal Society B Biological Sciences
Yi Wang, Chao Yang, Qiaojun Jin, Zhou Dongjie, Shuangshuang Wang, Yuanjie Yu, Long Yang,
The Poaceae family is of great importance to human beings since it comprises the cereal grasses which are the ... With the rapid growth of genomic data from Poaceae members, comparative genomics becomes a convinent method to ... are widely used markers in the studies of Poaceae for their high abundance and stability. In this study, using the genomic sequences of 9 Poaceae species, we detected 11,993,943 SSR loci ... regions involve a higher GC content in the Poaceae than that in the other species. SSRs of ... and analyzing SSR are provided in the PSSRD (Poaceae SSR Database, http://biodb.sdau.edu.cn/pssrd/ ). ...
Tópico(s): Plant Taxonomy and Phylogenetics
2015 - BioMed Central | BMC Genomic Data
This paper presents the results of Poaceae pollen seasons from 2000–2010 in Timisoara, Romania. Airborne Poaceae pollen concentrations was high. An increasing trend in the annual totals was ... the year 2000. The period in which the Poaceae pollen count exceeded the threshold value of 30 ... the strongest positive correlation was found between the Poaceae pollen counts and temperature; and sunshine hours. Daily ... determine how much of the total variance in Poaceae pollen counts can be explained by meteorological parameters. ...
Tópico(s): Botany and Plant Ecology Studies
2015 - Polish Botanical Society | Acta Agrobotanica
Produção Nacional
... study documents the relationship between the modern diporate Poaceae pollen grains and fossil diporate Poaceae pollen grains of Quaternary in the southern Brazil. ... the apertures of the pollen grains of 95 Poaceae species of Rio Grande do Sul region.These ... sedimentary samples of Águas Claras region, seven diporate Poaceae pollen grains were identified in all the profile.Diporate Poaceae pollen grains were absent in the basal ages ( ... grains indicated the vegetation type (grasslands).C3 diporate Poaceae species that reflect the occurrence of humid climate ...
Tópico(s): Ecology and Vegetation Dynamics Studies
2017 - | Open Access Journal of Agricultural Research
Pritesh Bhatt, Vrinda S. Thaker,
Poaceae is the fifth largest family and one of the important plant family to mankind economically and ... to terrestrial, temperate to tropical, wetlands to deserts. Poaceae consists of subfamilies i.e. Bambusoideae, Oryzoideae and ... and Chloridoideae are among the important subfamilies of Poaceae. From the past, many attempts are there for the phylogeny of Poaceae using one or more barcode genes. In the ... and corrected. For phylogenetic analysis, total of 193 Poaceae species were selected and searched for common concatenated ...
Tópico(s): Genetic diversity and population structure
2021 - Elsevier BV | Meta Gene
Wei‐Chen Huang, Lin Zhang, J. Travis Columbus, Yi Hu, Yiyong Zhao, Lin Tang, Zhenhua Guo, Wenli Chen, Michael R. McKain, Madelaine Bartlett, Chien‐Hsun Huang, Li D, Song Ge, Hong Mā,
Poaceae (the grasses) includes rice, maize, wheat, and other crops, and is the most economically important angiosperm family. Poaceae is also one of the largest plant families, ... a global distribution that contributes to diverse ecosystems. Poaceae species are classified into 12 subfamilies, with generally ... or subtribes, remain uncertain. To better resolve the Poaceae phylogeny, we generated 342 transcriptomic and seven genomic ... and transcriptomic datasets to provide sequences for 357 Poaceae species in 231 genera, representing 45 tribes and ...
Tópico(s): Photosynthetic Processes and Mechanisms
2022 - Elsevier BV | Molecular Plant
James Cockram, Thomas Thiel, Burkhard Steuernagel, Nils Stein, Stefan Taudien, Paul Bailey, Donal M. O’Sullivan,
... in the control of flowering time in the Poaceae. However, as it lacks B-box domains, its ... belongs to a larger family of previously uncharacterized Poaceae genes which possess just a single CCT domain, ... COL and PRR) gene families in four sequenced Poaceae species, as well as in the draft genome ... majority map to colinear positions relative to their Poaceae orthologues. Combined inter-/intra-species comparative and phylogenetic ... to the monocot/dicot divergence ∼200 mya, with Poaceae CMF evolution described as the interplay between whole ...
Tópico(s): Genetic Mapping and Diversity in Plants and Animals
2012 - Public Library of Science | PLoS ONE
Mary M. Guisinger, Timothy W. Chumley, Jennifer V. Kuehl, Jeffrey L. Boore, Robert K. Jansen,
Plastid genomes of the grasses (Poaceae) are unusual in their organization and rates of sequence evolution. There has been a recent surge in the availability of grass ... acceleration in both genomic rearrangements and nucleotide substitutions. Poaceae have multiple structural rearrangements, including three inversions, three ... copy regions. These rearrangements are restricted to the Poaceae, and IR expansion into the small single-copy ... protein-coding genes for 47 angiosperms including nine Poaceae genera confirm that the branch leading to Poaceae ...
Tópico(s): Plant Diversity and Evolution
2010 - Springer Science+Business Media | Journal of Molecular Evolution
Adam Marchant, Barbara G. Briggs,
Within Poales, the clade (Poaceae, Ecdeiocoleaceae, Joinvilleaceae) has previously received robust support from DNA sequence data from a range of genes.However, the question of ... set of families) is the sister group of Poaceae has not been answered with any degree of ... with low levels of support) as (Joinvillea (Ecdeiocolea, Poaceae)).We now provide matK and rbcL data for ... alternative topology of (Ecdeiocoleaceae, Joinvilleaceae) as sister to Poaceae and also help to resolve the position of Flagellariaceae.Flagellaria groups with (Poaceae, Ecdeiocoleaceae, Joinvilleaceae) in a graminid clade that is ...
Tópico(s): Plant and Fungal Species Descriptions
2007 - National Herbarium of NSW | Telopea
... 2001. Phylogeny and subfamilial classification of the grasses (Poaceae). Ann. Missouri Bot. Gard. 88: 373– 457. Harlan, ... Chromosome numbers and incidence of polyploidy in Panicoideae (Poaceae) from Pakistan. Ann. Missouri Bot. Gard. 81: 775– ... cyto -taxonomie et à la cytogéographie des Poa (Poaceae = Gramineae) de la Suisse. Denkschr. Schweiz. Naturf. Ges. ... cro-mosómicos y variabilidad morfológica de Paspalum distichum (Poaceae) en la Provincia de Buenos Aires (Argentina). Darwin- ... karyology and distribution of selected genera of tribeAveneae (Poaceae) in Poland: III. Koeleria. Fragm. Florist. Geobot., Suppl. ...
Tópico(s): Botany, Ecology, and Taxonomy Studies
2011 - Wiley | Taxon
István Matyasovszky, László Makra, Zoltán Guba, Zsolt Pátkai, Anna Páldy, Zoltán Sümeghy,
... precipitation occurrences are produced in order to classify Poaceae pollen levels. The Poaceae pollen concentration was then estimated one day ahead ... used. In order to estimate the actual daily Poaceae pollen concentrations, previous-day values of five meteorological variables and previous-day Poaceae pollen concentrations were applied. We find that both ... the subjective and objective classifications, high daily mean Poaceae pollen levels are favoured by anticyclone ridge weather situations, as we might expect. When estimating the Poaceae pollen level, the previous-day pollen concentration, previous- ...
Tópico(s): Lichen and fungal ecology
2011 - Taylor & Francis | Grana
Laure Chevalier, Christophe Desbuquois, J. Le Lannic, Maryvonne Charrier,
... Carduus tenuifloris, Urtica dioica, Galium molugo (Dicotyledons) and Poaceae (Monocotyledons) were the principal resources of the studied populations. The species of Poaceae ingested by Helix aspersa in July were determined ... results were convergent with the ingestion rates of Poaceae in the laboratory but assimilation efficiencies did not explain these choices. Poaceae with the highest energetic values were not preferred ... texture, the mineral and organic contents of the Poaceae may be responsible for the snails feeding choices. ...
Tópico(s): Geochemistry and Elemental Analysis
2001 - Elsevier BV | Comptes Rendus Biologies
Yi Zhao, Liang Tang, Zhe Li, Jinpu Jin, Jingchu Luo, Ge Gao,
... during evolution ("unitary gene loss"). Members of the Poaceae family are a major food source and represent ... the global pattern of unitary gene loss in Poaceae genomes as well as the evolutionary fate of ... protein-coding genes from four representative species of Poaceae, i.e. brachypodium, rice, sorghum and maize. Functional ... the lost genes in all or most of Poaceae species are enriched for genes involved in development ... comprehensive catalogue of unitary gene loss events in Poaceae species and characterized a statistically significant functional preference ...
Tópico(s): Plant-Microbe Interactions and Immunity
2015 - Springer Science+Business Media | BMC Evolutionary Biology
Produção Nacional
Revisado por pares
Suzana Neves Moreira, Vali Joana Pott, Arnildo Pott, Rosa Helena da Silva, Geraldo Alves Damasceno Júnior,
... We recorded 174 species, the richest families were Poaceae (40), Cyperaceae (25) and Asteraceae (14) and the ... 5). The phytosociological parameters revealed the importance of Poaceae, Cyperaceae and Asteraceae in these communities, corroborating other ... indicator species were the filiform Eriochrysis holcoides (Poales, Poaceae), Rhynchospora emaciata (Poales, Poaceae), zndropogon virgatus (Poales, Poaceae), Paspalum erianthoides (Poales, Poaceae) and P. flaccidum (Poales, Poaceae). Some species tend to be selective whilst others ...
Tópico(s): Soil erosion and sediment transport
2019 - UNIVERSIDADE FEDERAL DO RIO DE JANEIRO | Oecologia Australis
Lu‐Jun Yu, Di Liu, Shiyi Chen, Yang‐Shuo Dai, Wuxiu Guo, Xue Zhang, Linna Wang, Sirui Ma, Ming Xiao, Hua Qi, Shi Xiao, Qinfang Chen,
... especially in important crop plants, such as the Poaceae family, remain largely unknown. In this study, we ... sequenced and well annotated species representing the major Poaceae clades. A phylogenetic analysis of MACPF genes resolved ... group. MACPF genes were unevenly distributed along the Poaceae chromosomes. Moreover, segmental duplications and dispersed duplication events ... gene family expansion and functional diversification in the Poaceae. In addition, phylogenomic synteny analysis revealed a high ...
Tópico(s): Photosynthetic Processes and Mechanisms
2020 - Multidisciplinary Digital Publishing Institute | International Journal of Molecular Sciences
Anna Maria Mercuri, Eleonora Clò, Assunta Florenzano,
... ancient unusual morphological trait of the apertures of Poaceae pollen found in archaeological layers. In Poaceae, high levels of hybridization, polyploidy, apomixis, and multiporate ... pollen counts. The occurrence of multiporate pollen in Poaceae has also been related to special features of ... as to climatic and environmental stresses experienced by Poaceae living in a given region. Multiporate and bi- ... investigate whether the presence of supernumerary pores in Poaceae pollen may be an effect of both climatic/ ...
Tópico(s): Chromosomal and Genetic Variations
2022 - Multidisciplinary Digital Publishing Institute | Quaternary
Zhao Yong-jie, Yuecong Li, Zhen Zhang, Baoshuo Fan, Yuchen Zhu, Hongmei Zhao,
... of different plant community types, especially Artemisia and Poaceae communities is a major difficulty in modern pollen ... there is a clear distinction between Artemisia and Poaceae communities; in the Artemisia community, Artemisia pollen percentages are typically > 50%, and Poaceae pollen percentages are typically < 3%. In the Poaceae community, Poaceae pollen percentages are typically > 3%, and Artemisia pollen percentages are typically < 40%. 2) The Artemisia, Chenopodiaceae, Poaceae and Asteraceae are the most common vegetation types ...
Tópico(s): Botany and Plant Ecology Studies
2022 - Elsevier BV | Ecological Indicators
Caixia Wei, Phillip E. Jardine, William D. Gosling, Carina Hoorn,
Poaceae (the grass family) is highly diverse, geographically widespread, and an important component of many terrestrial ecosystems. Poaceae pollen size has previously been suggested as a ... 127 plant specimens from 58 species across the Poaceae phylogeny from the Amazon drainage basin (ADB). We ... mixed models (LMM). Our measurement data shows that Poaceae pollen size presents a very wide range (18. ...
Tópico(s): Evolution and Paleontology Studies
2022 - Elsevier BV | Review of Palaeobotany and Palynology
Camilo L. Quarín, Byron L. Burson,
... Relationships in the Group Caespitosa of Paspalum L. (Poaceae, Panicoideae, Paspaleae), Diversity 15, no.22 (Jan 2023): ... cytotype and its cytogenetic relationship with P. plicatulum (Poaceae): taxonomic and genetic implications, Australian Journal of Botany ... viability in aposporous and sexual tetraploid Paspalum notatum (Poaceae), Plant Systematics and Evolution 298, no.99 (Jun ... of Linearia and Notata groups of Paspalum L. (Poaceae, Panicoideae, Paniceae) and related species, Genetic Resources and ... Fernando O. Zuloaga CHROMOSOME STUDIES IN AMERICAN PANICOIDEAE (POACEAE) 1, Annals of the Missouri Botanical Garden 93, ...
Tópico(s): Plant Taxonomy and Phylogenetics
1983 - University of Chicago Press | Botanical Gazette
David Horton, Peter J. Landolt,
... seeds of grains, rolled oats [ Avenu sauva L. (Poaceae)], carrot [ Daucus carota L. (Umbelliferae)], and potato [ Solanum ... trials, germinating seed of wheat [ Triticum aestivum L. (Poaceae)] and barley [ Hordeum vulgare L. (Poaceae)] ranked higher in response by larvae than the ... 2-h assay period. Corn [ Zea mays L. (Poaceae)] seed and sliced carrot were also effective, with ... larvae contacting the baits. Rice [ Oryza sativa L. (Poaceae)], rye [ Secale cereale L. (Poaceae)], and potato were contacted by 30–45% of ...
Tópico(s): Insect Pest Control Strategies
2002 - Cambridge University Press | The Canadian Entomologist
Fabián A. Michelangeli, Jerrold I. Davis, Dennis Wm. Stevenson,
... the Poales was conducted to assess relationships among Poaceae and allied families. The analysis included 40 taxa, ... chloroplast genome inversion previously reported in Joinvillea and Poaceae, and like Joinvillea it lacks the trnT inversion ... in grasses. Analysis of the morphological data places Poaceae in an unresolved relationship relative to several other ... and combined data resolves Ecdeiocolea as sister of Poaceae, with Joinvillea the sister of this group. Although ... was later lost in Anarthria. Ecdeiocolea shares with Poaceae the presence of operculate, annulate pollen that lacks ...
Tópico(s): Genomics and Phylogenetic Studies
2003 - Wiley | American Journal of Botany
Lisa Schüler, Hermann Behling,
... in South America, the highly uniform morphology of Poaceae pollen grains has so far allowed only very few palynological studies based on Poaceae pollen. In our study we compare two methods ... American grassland ecosystems based on quantitative morphology of Poaceae pollen grains. We investigated data sets from Páramo ... setting for defining the boundary conditions for using Poaceae pollen grains in a palaeoecological investigation. Finally the ... size range can be assigned to a certain Poaceae taxon, conclusions about differences and similarities in taxa ...
Tópico(s): Geochemistry and Geologic Mapping
2010 - Springer Science+Business Media | Vegetation History and Archaeobotany
Sawahiko Shimada, Junko Matsumoto, Ayako Sekiyama, Buhe Aosier, M. Yokohana,
... detecting the abundance of grasses in the family Poaceae, which has a high palatability for livestock in ... based spectral reflectance of pure plant leaves – including Poaceae grasses – and soils, as well as in-situ ... magnify the characteristics of the spectral signal of Poaceae, NGBDI (Normalized Green-Blue Difference Index), NGRDI (Normalized ... calculated from the four multi-spectral reflectance values. Poaceae Abundance Index (PAI) was derived by combining these ... out to be a good indicator to discriminate Poaceae grass from the other plant spectral data.
Tópico(s): Land Use and Ecosystem Services
2012 - Elsevier BV | Advances in Space Research
Nicolas Paquet, Marie Bernadet, Halima Morin, Jan Traas, Michel Dron, Céline Charon,
Poaceae species present a conserved distichous phyllotaxy (leaf position along the stem) and share common properties with ... homologues of the maize TERMINAL EAR1 gene in Poaceae were studied. This gene encodes an RNA-binding ... unique tel (terminal ear1-like) gene from seven Poaceae members, covering almost all the phylogenetic tree of ... characteristic motifs. The evolution of tel sequences in Poaceae strongly correlates with the known phylogenetic tree of ... initiation but more generally with cell differentiation in Poaceae.
Tópico(s): Plant Reproductive Biology
2005 - Oxford University Press | Journal of Experimental Botany
Wenying Jiang, Xiaoxiao Yang, Yufen Cheng,
... same types but with a slight increase in Poaceae. During the Holocene Optimum, vegetation was more diverse, with Poaceae, Artemisia, Echinops-type, and Chenopodiaceae dominant in the northwest, and Pinus, Corylus, Poaceae, Artemisia, and Selaginella sinensis dominant in the southeast. ... Echinops-type and Taraxacum-type pollen decreased, while Poaceae pollen became more prevalent. As it has been found that most species of Poaceae prefer relatively humid conditions and abundances of Echinops- ... type increase in desert vegetation, a new proxy, Poaceae/(Echinops-type + Taraxacum-type) ratio (P/(E + T)), ...
Tópico(s): Geological formations and processes
2013 - Elsevier BV | Quaternary International