DSpace Coleção: Outras publicações (CNPSO)
https://www.alice.cnptia.embrapa.br/alice/handle/item/348
Outras publicações (CNPSO)2024-03-19T05:53:01ZEMBRAPA Soja: gerando tecnologia e cultivando parcerias.
https://www.alice.cnptia.embrapa.br/alice/handle/doc/1068174
Título: EMBRAPA Soja: gerando tecnologia e cultivando parcerias.
Conteúdo: Este vídeo apresenta um breve histórico da situação que culminou na criação da Embrapa Soja, em 1975. A partir desse ponto, são apresentadas algumas contribuições que a Embrapa Soja e seus parceiros forneceram para o desenvolvimento da cultura da soja no Brasil. Também são expostos os principais desafios a serem enfrentados pela instituição nos próximos anos, as ações junto à comunidade, a prioridade aos cuidados com o meio-ambiente e com a qualidade de vida, tendo por base a missão institucional, a visão e os valores da Empresa, explicitados em seu Plano Diretor. Destaca, especialmente, a participação imprescindível de empregados, estagiários e parceiros de instituições públicas e privadas na geração e na transferência de tecnologias e conhecimento que a Embrapa Soja disponibiliza para as culturas da soja e do girassol no Brasil e do trigo no Paraná.2005-01-01T00:00:00ZCercospora sojina: pathogenity, new races and seed transmission in soybeans.
https://www.alice.cnptia.embrapa.br/alice/handle/doc/1014766
Título: Cercospora sojina: pathogenity, new races and seed transmission in soybeans.
Autoria: YORINORI, J. T.
Conteúdo: The variability in Cercospora sojína (frogeye leal spot of soybeans), seed transmission and its relationship with other seedbome organisms were investigated. Sixty-six cultivars (maturity groups 00 to IX) were inoculated in the field with race 2 and nine new isolates oi C. sojina at 5 to 7 days intervals. The first inoculation was done when cultivars of maturity group 00 started to flower and deloliation was scored on day 33lrom first inoculation. Two disease rating scales were detined.(1) Based on relative number and types oi lesions: O = no lesion; 1 = reddish brown spots, 0.5 mm diameter or up to five 3 to 5 mm diameter spots/trifoliolate leal; 2 = reddish brown spots, 1 to 2 mm diameter or five to 10 spots/trifoliolate, 3 to 5 mm diameter; 3 = spots with reddish brown margin, light-brown to grayish center, 2 to 3 mm diameter or 10 to 50 spots/triloliolate, 3 to 5 mm diameter; 4 = spots with thin reddish brown margin, dark-grayish to light-brown center, 3 to 5 mm diameter and 50 to 120 spots/trifoliolate; and 5 = sarne as 4 with spots of more than 4 mm diameter and more than 120 spots/trifoliolate. (2) Baseei on percentage defoliation: O to 5% = resistant, 6 to 9% = intermediate, and more than 10% = susceptible. The nine new isolates of C. sojína were identified as seven new races and designated races 5 to 11. A set of differential cultivars with Bienville, Blackhawk, Bragg, Capital, Comet, Davis, Dorman, Flambeau, Hampton, Hood, Lee, Mandarin (Ottawa), Patoka, Roanoke, Tanner and Wabash is suggested. Percentage see infection by C. sojina (Cs) and other organisms on 29 cultivars {maturity groups 00 to IV) were determined in either of two ways. For the pod harvest (a) 16 cultivars (groups 00 to li) had ali the pods from five plants collected separately and the seeds aseptically assayed on blotters (4 layers of filter papers in 9-cm culture plates) with 15 to 17 seeds/plate; and for threshed seeds {b) 13 cultivars (groups Ili and IV) had tive plants threshed together and tive samples of 60 seeds/cultivar were assayed on blotters at 15 seeds/plate. The two harvest methods were also compareci with seeds threshed and surface-disinfected with 0.5% NaCIO. Percentage defoliation varied from less than 1 to 80% and was positively correlated with Cs and negatively with C. kíkuchíi infection (Ck), purple-stained seeds at plating {PS) and with 100-seed weight {HSW). The mean Cs varied trem O to 91.6% and was negatively correlated with Ck and HSW. Cs was most responsible for reduction in HSW. The effect of C. sojina on germination {GER) and HSW depended on infection occurring before full seed development. Mean PS varied Irem 1.7 to 15.6% and mean Ck varied from 7.7 to 47.1%. Mean Phomopsis spp. infection {Ph) varied Irem 5.2 to 80% and was the most responsible for low GER. Mean SMV seed mottling varied from O to 41.8%. SMV was higher on late-maturity cultivars, whereas, Ck, Cs and Ph were lower. Recovery of Ck, Cs and Ph from threshed and surface-disinfected seeds were significantly lower than from seeds removed from pods. The rate of seed transmission can be underestimated when seeds are surface-disinfected.1981-01-01T00:00:00ZThe complete genome of Burkholderia phenoliruptrix strain BR3459a, a symbiont of Mimosa flocculosa: highlighting the coexistence of symbiotic and pathogenic genes.
https://www.alice.cnptia.embrapa.br/alice/handle/doc/991675
Título: The complete genome of Burkholderia phenoliruptrix strain BR3459a, a symbiont of Mimosa flocculosa: highlighting the coexistence of symbiotic and pathogenic genes.
Autoria: ZULETA, L. F. G.; CUNHA, C. de O.; CARVALHO, F. M. de; CIAPINA, L. P.; SOUZA, R. C; MERCANTE, F. M.; FARIA, S. M. de; BALDANI, J. I.; STRALIOTTO, R.; HUNGRIA, M.; VASCONCELOS, A. T. R. de
Conteúdo: Burkholderia species play an important ecological role related to xenobiosis, the promotion of plant growth, the biocontrol of agricultural diseases, and symbiotic and non-symbiotic biological nitrogen fixation. Here, we highlight our study as providing the first complete genome of a symbiotic strain of B. phenoliruptrix, BR3459a (=CLA1), which was originally isolated in Brazil from nodules of Mimosa flocculosa and is effective in fixing nitrogen in association with this leguminous species. Genomic comparisons with other pathogenic and non-pathogenic Burkholderia strains grouped B. phenoliruptrix BR3459a with plant-associated beneficial and environmental species, although it shares a high percentage of its gene repertoire with species of the B. cepacia complex (Bcc) and "pseudomallei" group. The genomic analyses showed that the bce genes involved in exopolysaccharide production are clustered together in the same genomic region, constituting part of the Group III cluster of non-pathogenic bacteria. Regarding environmental stresses, we highlight genes that might be relevant in responses to osmotic, heat, cold and general stresses. Furthermore, a number of particularly interesting genes involved in the machinery of the T1SS, T2SS, T3SS, T4ASS and T6SS secretion systems were identified. The xenobiotic properties of strain BR3459a were also investigated, and some enzymes involved in the degradation of styrene, nitrotoluene, dioxin, chlorocyclohexane, chlorobenzene and caprolactam were identified. The genomic analyses also revealed a large number of antibiotic-related genes, the most important of which were correlated with streptomycin and novobiocin. The symbiotic plasmid showed high sequence identity with the symbiotic plasmid of B. phymatum. Additionally, comparative analysis of 545 housekeeping genes among pathogenic and non-pathogenic Burkholderia species strongly supports the definition of a new genus for the second branch, which would include BR3459a. The analyses of B. phenoliruptrix BR3459a showed key property of fixing nitrogen that together with genes for high tolerance to environmental stresses might explain a successful strategy of symbiosis in the tropics. The strain also harbours interesting sets of genes with biotechnological potential. However, the resemblance of certain genes to those of pathogenic Burkholderia raise concerns about large-scale applications in agriculture or for bioremediation.2014-01-01T00:00:00ZGenomic efforts for soybean improvement in Brazil.
https://www.alice.cnptia.embrapa.br/alice/handle/doc/952784
Título: Genomic efforts for soybean improvement in Brazil.
Autoria: ABDELNOOR, R. V.2013-01-01T00:00:00Z