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Registros recuperados: 11
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Biology, management and biochemical/genetic characterization of weed biotypes resistant to acetolactate synthase inhibitor herbicides Scientia Agricola
Monquero,Patrícia Andrea; Christoffoleti,Pedro Jacob; Carrer,Helaine.
Bidens pilosa and Amaranthus quitensis are major weeds infesting soybean [Glycine max L (Merrill)] fields in Brazil and Argentina. The repetitive use of acetolactate synthase (ALS EC 4.1.3.18) inhibiting herbicides in São Gabriel do Oeste, MS, Brazil and in the provinces of Córdoba and Tucumã, Argentina, has selected for resistant (R) biotypes of these weeds. Research work was developed to study the management, growth, biochemistry, and genetics of these R weed biotypes. In a field experiment it was found that chlorimuron-ethyl and imazethapyr at recommended rates (both ALS inhibitor herbicides), did not control R B. pilosa, but the alternative lactofen, fomesafen and bentazon were effective, either sprayed alone or mixed with the ALS inhibitor herbicides....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amaranthus quitensis; Bidens pilosa; Chlorimuron-ethyl; Glycine max L. Merrill; Imazethapyr.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300013
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Brazilian coffee genome project: an EST-based genomic resource Braz. J. Plant Physiol.
Vieira,Luiz Gonzaga Esteves; Andrade,Alan Carvalho; Colombo,Carlos Augusto; Moraes,Ana Heloneida de Araújo; Metha,Ângela; Oliveira,Angélica Carvalho de; Labate,Carlos Alberto; Marino,Celso Luis; Monteiro-Vitorello,Claúdia de Barros; Monte,Damares de Castro; Giglioti,Éder; Kimura,Edna Teruko; Romano,Eduardo; Kuramae,Eiko Eurya; Lemos,Eliana Gertrudes Macedo; Almeida,Elionor Rita Pereira de; Jorge,Érika C.; Albuquerque,Érika V. S.; Silva,Felipe Rodrigues da; Vinecky,Felipe; Sawazaki,Haiko Enok; Dorry,Hamza Fahmi A.; Carrer,Helaine; Abreu,Ilka Nacif; Batista,João A. N.; Teixeira,João Batista; Kitajima,João Paulo; Xavier,Karem Guimarães; Lima,Liziane Maria de; Camargo,Luis Eduardo Aranha de; Pereira,Luiz Filipe Protasio; Coutinho,Luiz Lehmann; Lemos,Manoel Victor Franco; Romano,Marcelo Ribeiro; Machado,Marcos Antonio; Costa,Marcos Mota do Carmo; Sá,Maria Fátima Grossi de; Goldman,Maria Helena S.; Ferro,Maria Inês T.; Tinoco,Maria Laine Penha; Oliveira,Mariana C.; Van Sluys,Marie-Anne; Shimizu,Milton Massao; Maluf,Mirian Perez; Eira,Mirian Therezinha Souza da; Guerreiro Filho,Oliveiro; Arruda,Paulo; Mazzafera,Paulo; Mariani,Pilar Drummond Sampaio Correa; Oliveira,Regina L.B.C. de; Harakava,Ricardo; Balbao,Silvia Filippi; Tsai,Siu Mui; Mauro,Sonia Marli Zingaretti di; Santos,Suzana Neiva; Siqueira,Walter José; Costa,Gustavo Gilson Lacerda; Formighieri,Eduardo Fernandes; Carazzolle,Marcelo Falsarella; Pereira,Gonçalo Amarante Guimarães.
Coffee is one of the most valuable agricultural commodities and ranks second on international trade exchanges. The genus Coffea belongs to the Rubiaceae family which includes other important plants. The genus contains about 100 species but commercial production is based only on two species, Coffea arabica and Coffea canephora that represent about 70 % and 30 % of the total coffee market, respectively. The Brazilian Coffee Genome Project was designed with the objective of making modern genomics resources available to the coffee scientific community, working on different aspects of the coffee production chain. We have single-pass sequenced a total of 214,964 randomly picked clones from 37 cDNA libraries of C. arabica, C. canephora and C. racemosa,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea; CDNA; EST; Transcriptome.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000100008
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Cloning and expression of cellulase XF-818 of Xylella fastidiosa in Escherichia Coli Scientia Agricola
Wulff,Nelson Arno; Carrer,Helaine; Pascholati,Sérgio Florentino.
Xylella fastidiosa's genome was the first of a plant pathogen to be completely sequenced. Through comparative sequence analysis many genes were identified and, among them, several potentially involved in plant-pathogen interaction. However, the biological role of each gene should be assigned experimentally. On this regard, heterologous protein expression is a powerful tool to produce proteins from such genes, allowing their characterization. X. fastidiosa lives inside xylem vessels and eventually would degrade pit membranes from xylem cells to move radialy into the host. The identification of several putative plant cell wall degrading enzymes on X. fastidiosa genome prompted the assession of the function of such proteins. The open reading frame (ORF)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Citrus variegated chlorosis; Cellulases; Cloning and expresssion.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400016
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Cloning and sequence analysis of tomato cpDNA fragments: towards developing homologous chloroplast transformation vectors Braz. J. Plant Physiol.
Berger,Irving Joseph; Carraro,Dirce Maria; Bock,Ralph; Azevedo,Ricardo Antunes; Carrer,Helaine.
With the view of developing chloroplast transformation vectors based on homologous targeting regions for tomato (Lycopersicon esculentum L.), plastid DNA fragments of tomato cv. IAC-Santa Clara were cloned and analyzed. Isolation and cloning of PstI/SalI chloroplast fragments into the pBlueScript vectors yielded the plasmids pIJB1 and pIJB2 with cpDNA fragments of 8.6 kb and 6.4 kb, respectively. DNA sequencing and computer analyses revealed that the tomato sequences cloned display from 93 to 100 % of identity to the respective fragments in tobacco, which is more pronounced in coding regions. The intergenic spacers are somewhat less conserved suggesting that evolutionary divergences occurred mainly in these putative non-coding regions. The most remarkable...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lycopersicon esculentum; Nicotiana tabacum; Chloroplast DNA; Plastid transformation; Plastome; Tobacco; Tomato.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000200007
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Genes associated with hypersensitive response (HR) in the citrus EST database (CitEST) Genet. Mol. Biol.
Guidetti-Gonzalez,Simone; Freitas-Astúa,Juliana; Amaral,Alexandre Morais do; Martins,Natália F.; Mehta,Angela; Silva,Marilia Santos; Carrer,Helaine.
Plants are continuously exposed to pathogen attack, but successful infection is rare because they protect themselves against pathogens using a wide range of response mechanisms. One of them is the hypersensitive response (HR), which is a form of cell death often associated with plant resistance to pathogen infection to prevent the spreadsebpg@cnpq.br sebpg@cnpq.br of the potential pathogen from infected to uninfected tissues. Cell death is activated by recognition of pathogen-derived molecules by the resistance (R) gene products, and is associated with the massive accumulation of reactive oxygen species (ROS), salicylic acid (SA), and other pro-death signals such as nitric oxide (NO). The analysis of the citrus EST (CitEST) database revealed the presence...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Otic and abiotic stress response; Plant-pathogen incompatible interaction; Programmed cell death; Plant disease resistance.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500022
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Identification of Astyanax altiparanae (Teleostei, Characidae) in the Iguaçu River, Brazil, based on mitochondrial DNA and RAPD markers Genet. Mol. Biol.
Prioli,Sônia M.A.P.; Prioli,Alberto J.; Júlio Jr.,Horácio F.; Pavanelli,Carla S.; Oliveira,Alessandra V. de; Carrer,Helaine; Carraro,Dirce M.; Prioli,Laudenir M..
Astyanax fishes are among the most important food-web components of South America rivers. In the Iguaçu River basin, the Astyanax genus is represented mainly by endemic species. For millions of years, that hydrographic basin has been geographically isolated from the Paraná River basin by the Iguaçu Falls. Recently, a species from the Upper Paraná River basin identified as Astyanax bimaculatus was revised and described as a new species named Astyanax altiparanae Garutti & Britski, 2000. Fauna endemism and geographic isolation triggered interest in investigations to evaluate the identification and genetic relatedness among two A. altiparanae populations from the Upper Paraná River basin and the population identified as A. bimaculatus in the Iguaçu...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax; Fish; D-loop; Control region; Mitochondrial DNA; RAPD.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000400011
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Identification of protein kinase SNF1 in CitEST Genet. Mol. Biol.
Guidetti-Gonzalez,Simone; Ragassi,Carlos Francisco; Carrer,Helaine.
SnRKs (Sucrose non-fermenting-1 related kinases) is a family of protein kinases found in many crops, such as Arabidopsis, rice, sugarcane, tomato and several other plant species. This family of proteins is also present in other organisms like Saccharomyces cerevisiae (sucrose non-fermenting-1 - Snf1) and in mammals (AMP-activated protein kinases - AMPKs). There is evidence that SnRKs play an important role in plant responses to nutritional and environmental stresses and that SnRKs also play a major role in controlling key enzymes in the biosynthetic pathways of plants. In this work, we identified 18 contigs and two singletons encoding putative SnRKs in the CitEST database. All of them present highly conserved N-terminal catalytic domain, which is found in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SnRK; Sucrose non-fermenting-1 (SNF1); Transcription regulator.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500015
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In silico characterization and expression analyses of sugarcane putative sucrose non-fermenting-1 (SNF1) related kinases Genet. Mol. Biol.
Carraro,Dirce Maria; Lambais,Marcio R.; Carrer,Helaine.
Sucrose non-fermenting-1-related protein kinases (SnRKs) may play a major role in regulating gene expression in plant cells. This family of regulatory proteins is represented by sucrose non-fermenting-1 (SNF1) protein kinase in Saccharomyces cerevisiae, AMP-activated protein kinases (AMPKs) in mammals and SnRKs in higher plants. The SnRK family has been reorganized into three subfamilies according to the evolutionary relationships of their amino acid sequences. Members of the SnRK subfamily have been identified in several plants. There is evidence that they are involved in the nutritional and/or environmental stress response, although their roles are not yet well understood. We have identified at least 22 sugarcane expressed sequence tag (EST) contigs...
Tipo: Info:eu-repo/semantics/article
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572001000100006
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Putative resistance genes in the CitEST database Genet. Mol. Biol.
Guidetti-Gonzalez,Simone; Carrer,Helaine.
Disease resistance in plants is usually associated with the activation of a wide variety of defense responses to prevent pathogen replication and/or movement. The ability of the host plant to recognize the pathogen and to activate defense responses is regulated by direct or indirect interaction between the products of plant resistance (R) and pathogen avirulence (Avr) genes. Attempted infection of plants by avirulent pathogens elicits a battery of defenses often followed by the collapse of the challenged host cells. Localized host cell death may help to prevent the pathogen from spreading to uninfected tissues, known as hypersensitive response (HR). When either the plant or the pathogen lacks its cognate gene, activation of the plant’s defense responses...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypersensitive response (HR); Plant disease resistance; Citrus; EST sequences.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500021
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Seeing the FORESTs for the trees Genet. Mol. Biol.
Carrer,Helaine.
Tipo: Info:eu-repo/semantics/other
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400001
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Signaling pathways in a Citrus EST database Genet. Mol. Biol.
Mehta,Angela; Silva,Marilia Santos; Guidetti-Gonzalez,Simone; Carrer,Helaine; Takita,Marco Aurélio; Martins,Natália F..
Citrus spp. are economically important crops, which in Brazil are grown mainly in the State of São Paulo. Citrus cultures are attacked by several pathogens, causing severe yield losses. In order to better understand this culture, the Millenium Project (IAC Cordeirópolis) was launched in order to sequence Citrus ESTs (expressed sequence tags) from different tissues, including leaf, bark, fruit, root and flower. Plants were submitted to biotic and abiotic stresses and investigated under different development stages (adult vs. juvenile). Several cDNA libraries were constructed and the sequences obtained formed the Citrus ESTs database with almost 200,000 sequences. Searches were performed in the Citrus database to investigate the presence of different...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Citrus; Cell signaling; Genomics.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500003
Registros recuperados: 11
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