Stunt Plant Disease
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Incidência de viroses e enfezamentos e estimativa de perdas causadas por molicutes em milho no Paraná.
O objetivo deste trabalho foi avaliar a incidência de viroses e enfezamentos e estimar as perdas causadas por enfezamentos na cultura do milho safrinha. Os diagnósticos baseados em sintomas foram confirmados por PCR ou RT-PCR. Em todas as lavouras, foram identificadas plantas com sintomas de enfezamentos, em incidência de 6,2% a 49,9% (média de 20,7%). N
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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2. 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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3. Cauliflower stunt: molecular identification of phytoplasmas, evidence of potential vector and epidemiological analysis of the disease / Enfezamento da couve-flor: identificação molecular de fitoplasmas, evidência de potencial vetor e análise epidemiológica da doença
A couve-flor está entre as folhosas mais produzidas na região do Cinturão Verde de São Paulo. A planta apresenta alto valor nutricional para os consumidores e relevante importância econômica e social para os agricultores. Em campos comerciais, têm sido observadas plantas exibindo sintomas de enfezamento e deformação da inflorescência, além da necr
Publicado em: 2010
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4. Molecular identification of phytoplasmas associated to cabbage stunt and epidemiological analysis of disease / Identificação molecular de fitoplasmas associados ao enfezamento do repolho e análise epidemiológica da doença
A disease called stunt, of unknown etiology, has occurred in cabbage crops located in the green belt region of the São Paulo State (Brazil). The disease has caused serious yield losses in the last years. The symptomatology exhibited by the affected plants has been characterized by foliar chlorosis, intense red coloration of leafs, general stunt, shoot proli
Publicado em: 2007
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5. 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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6. Identification of tomato bushy stunt virus host-specific symptom determinants by expression of individual genes from a potato virus X vector.
In this study, we analyzed the influence of two nested genes (p19 and p22) of tomato bushy stunt virus (TBSV) on disease symptoms in systemically infected plants and in local lesion hosts. The contribution of individual genes was determined by bioassays with an infectious clone of wild-type TBSV, with p19/p22 mutant derivatives, and by expression of individu
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7. Molecular Characterization of Bombyx mori Cytoplasmic Polyhedrosis Virus Genome Segment 4
The complete nucleotide sequence of the genome segment 4 (S4) of Bombyx mori cytoplasmic polyhedrosis virus (BmCPV) was determined. The 3,259-nucleotide sequence contains a single long open reading frame which spans nucleotides 14 to 3187 and which is predicted to encode a protein with a molecular mass of about 130 kDa. Western blot analysis showed that S4 e
American Society for Microbiology.
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8. Nonradioactive Screening Method for Isolation of Disease-Specific Probes To Diagnose Plant Diseases Caused by Mycoplasmalike Organisms
DNA fragments of tomato big bud (BB) mycoplasmalike organism (MLO) in diseased periwinkle plants (Catharanthus roseus L.) were cloned to pSP6 plasmid vectors and amplified in Escherichia coli JM83. A nonradioactive method was developed and used to screen for MLO-specific recombinants. Cloned DNA probes were prepared by nick translation of the MLO recombinant