Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 8
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
A genetic framework for flowering-time pathways in Citrus spp. Genet. Mol. Biol.
Dornelas,Marcelo Carnier; Camargo,Raquel Luciana Boscariol; Figueiredo,Luciana Harumi Morimoto; Takita,Marco Aurélio.
Floral transition is one the most drastic changes occurring during the life cycle of a plant. The shoot apical meristem switches from the production of leaves with associated secondary shoot meristems to the production of flower meristems. This transition is abrupt and generally irreversible, suggesting it is regulated by a robust gene regulatory network capable of driving sharp transitions. The moment at which this transition occurs is precisely determined by environmental and endogenous signals. A large number of genes acting within these pathways have been cloned in model herbaceous plants such as Arabidopsis thaliana. In this paper, we report the results of our search in the Citrus expressed sequence tag (CitEST) database for expressed sequence tags...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproductive development; Flowering-time genes; Reproduction; Photoperiod; CONSTANS.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500006
Imagem não selecionada

Imprime registro no formato completo
EgLFY, the Eucalyptus grandis homolog of the Arabidopsis gene LEAFY is expressed in reproductive and vegetative tissues Braz. J. Plant Physiol.
Dornelas,Marcelo Carnier; Amaral,Weber A. Neves do; Rodriguez,Adriana Pinheiro Martinelli.
The EgLFY gene cloned from Eucalyptus grandis has sequence homology to the floral meristem identity gene LEAFY (LFY) from Arabidopsis and FLORICAULA (FLO) from Antirrhinum. EgLFY is preferentially expressed in the developing eucalypt floral organs in a pattern similar to that described previously for the Arabidopsis LFY. In situ hybridization experiments have shown that EgLFY is strongly expressed in the early floral meristem and then successively in the primordia of sepals, petals, stamens and carpels. It is also expressed in the leaf primordia of adult trees. The expression of the EgLFY coding region under control of the Arabidopsis LFY promoter could complement strong lfy mutations in transgenic Arabidopsis plants. These data suggest that EgLFY plays a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Flowering; LEAFY; Reproductive development.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000200006
Imagem não selecionada

Imprime registro no formato completo
Improving reproductive efficiency of chickpea by foliar application of zinc Braz. J. Plant Physiol.
Pathak,Girish Chandra; Gupta,Bhavana; Pandey,Nalini.
Zinc deficiency is not only the cause of low productivity of crops, but it also results in low zinc content in seeds, which leads to poor dietary zinc intake. To study the effect of zinc foliar application on improving plant yield and seed zinc content for human consumption, chickpea plants were raised in refined sand culture with deficient (0.2 µM) and sufficient (1µM) supply of zinc under glass-house conditions. Prior to initiation of the reproductive phase, zinc was applied as 0.1% ZnSO4 foliar spray to both zinc sufficient and deficient plants. The plants exposed to different zinc treatments were studied for pollen and stigma structure and their involvement in fertilization and seed yield. Zinc deficiency induces flower abortion, pollen, and ovule...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cicer arietinum (L.); Foliar application; Reproductive development; Zinc deficiency.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000300004
Imagem não selecionada

Imprime registro no formato completo
Induction and differentiation of reproductive buds in Coffea arabica L. Braz. J. Plant Physiol.
Majerowicz,Nidia; Söndahl,Maro R..
The induction and differentiation phases of reproductive buds of Coffea arabica L. have not received much attention. In the present paper, axillary buds from five plagiotropic branches that developed in the same growing season without fruits (1st crop branches), and from green segments of five recently grown plagiotropic branches with fruits (2nd crop branches), were collected every two weeks during successive inductive months of the year. This study was carried out with adult arabica trees, Catuaí Vermelho cv. IAC 81, cultivated under normal farming conditions in the region of Campinas, SP, Brazil (22º54' Lat. S). Slides of longitudinal-axial sections of 10-12 mum thickness were mounted for the characterization and quantification of histological stages of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arabica coffee; Floral differentiation; Floral induction; Flower buds; Histological differentiation; Reproductive development.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000200008
Imagem não selecionada

Imprime registro no formato completo
Mild reproductive effects of the Tityus bahiensis scorpion venom in rats J. Venom. Anim. Toxins incl. Trop. Dis.
Dorce,Ana Leticia C; Dorce,Valquiria AC; Nencioni,Ana Leonor A.
BackgroundScorpion envenoming is a public health problem in Brazil, whereTityus serrulatus and T. bahiensisare considered the most dangerous scorpions. They are well adapted to urbanized environments, and there is an increasing probability of human exposure to these venoms, including during pregnancy. Not much is known about the effects of prenatal exposure to the venom, and no information is available to aid in the rational treatment of victims stung during pregnancy. Thus, this study aimed to investigate whether venom from the scorpion T. bahiensis administered once to pregnant female rats at a dose that causes a moderate envenomation may lead to deleterious effects on the reproductive performance of the dams and on the development of their offspring....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion venom; Tityus bahiensis; Pregnancy; Reproductive development; Embryofetotoxicity.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992014000200322
Imagem não selecionada

Imprime registro no formato completo
Perinatal effects of scorpion venoms: maternal and offspring development J. Venom. Anim. Toxins incl. Trop. Dis.
Dorce,Ana Leticia Coronado; Martins,Adriana do Nascimento; Dorce,Valquiria Abrão Coronado; Nencioni,Ana Leonor Abrahão.
Abstract Scorpion envenomation is a public health problem, especially in tropical and subtropical countries. Considering the high incidence of scorpionism in some areas, pregnant women and nursing mothers may be possible victims. Scorpion stings alter the release of neurotransmitters and some cytokines. These mediators act as organizers and programmers in the adequate formation of the nerves, and non-physiological concentrations of them during the brain organization originate disorders and diseases that can appear later in the life of the individual. Despite the importance of this subject, there are only a few studies showing the effects of scorpion venom on maternal reproductive development, in the morphology and physical and behavioral development of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion venoms; Pregnancy; Lactation; Reproductive development; Perinatal development.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100210
Imagem não selecionada

Imprime registro no formato completo
The anthochron as a building block of flower development PAB
Streck,Nereu Augusto; Schwab,Natalia Teixeira.
Abstract: Plant vegetative development has been widely described using the phyllochron concept, but little effort has been made to describe flower development during the reproductive phase. The objective of this work was to present the anthochron, through a review of the literature, as a building block of flower development, mainly during the flower opening phase. The anthochron is the time interval needed for two subsequent flowers to achieve the same developmental stage, with units of time in days or in ºC day per flower. The concept of anthochron fulfills part of the lack of studies on flower development, since it is considered a building block of the flower opening process. The anthochron can be measured from field experiments or estimated by a simple...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthesis; Development unit; Inflorescence; Reproductive development.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000800899
Imagem não selecionada

Imprime registro no formato completo
Unravelling MADS-box gene family in Eucalyptus spp.: a starting point to an understanding of their developmental role in trees Genet. Mol. Biol.
Dias,Beatriz Fonseca de Oliveira; Simões-Araújo,Jean Luiz; Russo,Claudia A.M.; Margis,Rogério; Alves-Ferreira,Márcio.
MADS-box genes encode a family of transcription factors which control diverse developmental processes in flowering plants ranging from root to flower and fruit development. Members of the MADS-box gene family share a highly conserved sequence of approximately 180 nucleotides that encodes a DNA-binding domain. We used bioinformatics tools to investigate the information generated by the Eucalyptus Expressed Sequence Tag (FORESTs) genome project in order to identify and annotate MADS-box genes. The comparative phylogenetic analysis of the Eucalyptus MADS-box genes with Arabidopsis homologues allowed us to group them into one of the well-known subfamilies. Trends in gene expression of these putative Eucalyptus MADS-box genes were investigated by hierarchical...
Tipo: Info:eu-repo/semantics/article Palavras-chave: MADS-box; Vegetative development; Reproductive development; Phylogenetic analysis; ESTs.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400004
Registros recuperados: 8
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional