Plant Stunting
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Biological characterization of the toxic effects of extracts of liquid cultures of Leifsonia xyli subsp. xyli on the germination of lettuce seeds / Caracterização do efeito tóxico de extrato de culturas líquidas de Leifsonia xyli subsp. xyli na germinação de sementes de alface
Este estudo avaliou os efeitos de extratos de culturas líquidas de Leifsonia xyli subsp. xyli (Lxx) cultivada sob condições de estresse osmótico e na presença de inibidores da rota não-mevalonato (MEP/DOXP) de síntese de pigmentos isoprenóides, na germinação de sementes de alface. Também avaliou a relação entre o efeito tóxico dos extratos e a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2012
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2. Soluble sugars and starch accumulation on cotton plant leaves affected by cotton leafroll dwarf virus.
The cotton blue disease, a main cotton pest in Brazil, is caused by a luteovirus, named Cotton leafroll dwarf virus (CLRDV) or Cotton vein mosaic virus (CVMV). Symptoms include shortening of internodes and stunting. Luteoviruses have been reported to cause carbohydrates accumulation in infected plants. The aim of this research was to verify if soluble sugars
Revista Brasileira de Oleaginosas e Fibrosas. Publicado em: 2011
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3. Potenciais hospedeiros alternativos para o fitoplasma e o espiroplasma, agentes do enfezamento do milho, e alterações bioquímicas em plantas infectadas pelo espiroplasma / Potencial hosts for maize mollicutes, agent of corn stunt, and biochemical changes in plants infected by the spiroplasma
The maize bushy stunt and corn stunt are relevant diseases caused, respectively, by a phytoplasma and a spiroplasma (Spiroplasma kunkelii). Both kinds of stunting were reported in Brazil in the beginning of the 1970´s and became economically important in the beginning of the 1980´s, with the adoption of new techniques for maize cultivation. Although this p
Publicado em: 2010
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4. Study of natural genetic variations of Solanum galapagense possibly related to changes in the hormone gibberellin / Estudo de variações genéticas naturais de Solanum galapagense possivelmente relacionadas com alterações no hormônio giberelina
As espécies selvagens relacionadas ao tomateiro (Lycopersicon esculentum Mill. Syn. Solanum lycopersicum L) em latitudes do Sul do Equador ao norte do Chile. Estas condições ambientais contrastantes possibilitaram o aparecimento de grande diversidade genética dentre estas espécies. Lycopersicon cheesmanii f .minor (Hook.f.) C. H. Hill. Syn. Solanum gala
Publicado em: 2009
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5. CARACTERIZAÃÃO PATOGÃNICA E MOLECULAR DE ISOLADOS DO Potato virus Y (PVY) CAUSADORES DE ANÃIS NECRÃTICOS EM TUBÃRCULOS DE BATATA / Characterization pathogenic and molecular the isolates of Potato virus Y (PVY) causes of rings necrotics in tuber potato.
Fourteen isolates of PVYNTN, collected at potato production fields in Brazil, were studied. Thirteen of them were from the South region of Minas Gerais and the other one was from SÃo Paulo State. All isolates were submitted to the test DAS-ELISA and RT-PCR for initial identification. After that, they were inoculated in fourteen host species for evaluation o
Publicado em: 2009
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6. Avaliação da resistência à Leifsonia xyli subsp. xyli, agente causal do raquitismoda- soqueira (RSD), em variedades comerciais de cana-de-açúcar / Resistance of sugarcane commercial cultivars to Leifsonia xyli subsp. xyli; the causal agent of the ratoon stunting disease (RSD)
Sugarcane (Saccharum ssp.) is one of the most important cultures in the history of the humanity. The center of origin is probably New Guinea, where people had the first contact with the plant in wild state. Presently, Brazil leads the list of the 80 sugarcane producing countries. Brazil is also the first in exporting sugarcane by-products, followed by Austra
Publicado em: 2008
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7. Resistência genética, fungicidas e solarização para o controle de Thielaviopsis basicola (Berk. &Broome) Ferraris na cultura de alface (Lactuca sativa L.). / Genetic resistance, fungicides and solarization for the control of Thielaviopsis basicola (Berk. &Broome) Ferraris in lettuce crop (Lactuca sativa L.).
Lettuce is the most used leafy vegetable in Brazil. Its crop is being severely affected by Thielaviopsis basicola, fungus which causes root rot and stunting in plants. There are no control studies about this pathogen for the brazillian conditions. This research aimed: to determine the T. basicola occurence in São Paulo State commercial lettuce and other lea
Publicado em: 2005
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8. Resistance of brazilian sugarcane cultivars to ratoon stunting disease basead on the rate of stalk colonization by Leifsonia xyli subsp. Xyli. / Avaliação da resistência de variedades de cana-de-açúcar ao raquitismo-da-soqueira com base na taxa de colonização dos colmos por Leifsonia xyli subsp. xyli.
The tissue blot immunoassay (TBIA) for detecting Leifsonia xyli subsp. xyli (Lxx) colonized vascular bundles (CVB) were used in determining the reaction of 28 brazilian sugarcane cultivars to ratoon stunting disease (RSD), including CB47-355, CB41-76 e CB49-260 as resistant, intermediate and susceptible standards. For each cultivar, 16 buds were hot water tr
Publicado em: 2004
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9. Molecular identification of maize bushy stunt phytoplasm strains collected in São Paulo State. / Identificação molecular de isolados do fitoplasma do enfezamento vermelho do milho coletados no Estado de São Paulo.
Since the middle 80s, an increase in year round cropping of maize resulted in a spread of secondary diseases in the crops major production areas. In this context, maize busy stunt, firstly appointed in Brazil in 1970, is occurring more frequently, often with total damage of production. Infected plants show a complex symptomatology, easily confounded with v
Publicado em: 2002
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10. Broad resistance to plant viruses in transgenic plants conferred by antisense inhibition of a host gene essential in S-adenosylmethionine-dependent transmethylation reactions.
S-Adenosylhomocysteine hydrolase (SAHH) is a key enzyme in transmethylation reactions that use S-adenosylmethionine as the methyl donor. Because of the importance of SAHH in a number of S-adenosylmethionine-dependent transmethylation reactions, particularly the 5' capping of mRNA during viral replication, SAHH has been considered as a target of potential ant
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11. Testing the Physiological Barriers to Viral Transmission in Aphids Using Microinjection
Potato loafroll virus (PLRV), from the family Luteoviridae infects solanaceous plants. It is transmitted by aphids, primarily, the green peach aphid. When an uninfected aphid feeds on an infected plant it contracts the virus through the plant phloem. Once ingested, the virus must pass from the insect gut to the hemolymph (the insect blood ) and then must pa
MyJove Corporation.
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12. Cytokinin Inhibits a Subset of Diageotropica-Dependent Primary Auxin Responses in Tomato1
Many aspects of plant development are regulated by antagonistic interactions between the plant hormones auxin and cytokinin, but the molecular mechanisms of this interaction are not understood. To test whether cytokinin controls plant development through inhibiting an early step in the auxin response pathway, we compared the effects of cytokinin with those o
American Society of Plant Biologists.