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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
28/09/2022 |
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Data da última atualização: |
01/02/2024 |
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Autoria: |
ARAUJO, E. F.; FUCK, M. P. |
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Afiliação: |
ELIZANDRA FLÁVIA ARAUJO, INSTITUTO DE PESQUISA E PLANEJAMENTO URBANO DE CURITIBA; MARCOS PAULO FUCK, UNIVERSIDADE FEDERAL DO PARANÁ. |
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Título: |
Agricultura urbana em Curitiba: um fenômeno heterogêneo e desigual. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Cadernos de Ciência & Tecnologia, v. 39, n. 2, e26959, 2022. |
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DOI: |
http://dx.doi.org/10.35977/0104-1096.cct2022.v39.26959 |
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Idioma: |
Português |
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Notas: |
Título em inglês: Urban agriculture in the city of Curitiba: a heterogeneous and unequal phenomenon. |
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Conteúdo: |
RESUMO - A política da cidade de Curitiba em relação à agricultura urbana é destacada como caso de sucesso no Brasil, mas há na cidade outros movimentos em torno do tema que partem da sociedade civil. O presente estudo teve por objetivo identificar e caracterizar as diferentes categorias de praticantes de agricultura urbana em Curitiba. Para tal, foi realizada uma pesquisa descritiva mediante análise bibliográfica e documental. Primeiramente, foram levantados os principais aspectos do Programa Municipal de Hortas Comunitárias e o perfil dos seus beneficiários. Observou-se que as atividades se concentram nas áreas periféricas da cidade, e a maioria dos participantes possui renda familiar mensal de até 2 salários mínimos. Também foram mapeadas outras duas categorias de praticantes: a primeira conforma uma comunidade epistêmica, cuja reivindicação de uso do espaço urbano para práticas de agricultura urbana deu origem à Lei Municipal de Agricultura Urbana de Curitiba. Há também aqueles que têm na agricultura seu meio de reprodução social, mas que apresentam tendência ao desaparecimento em virtude da expansão urbana sobre áreas antes rurais. Assim, apesar da ampla gama de atores que desenvolvem essas práticas em todo o território, sua visibilidade e inserção na agenda política ocorrem de maneira assimétrica. ABSTRACT - The urban agriculture policy in the city of Curitiba, Brazil stands out as a successful case in Brazil, but there are other movements in the city about the theme from civil society. The goal of this paper was to identify and characterize different categories of urban agriculture practitioners in Curitiba. To this end, a descriptive research was carried out through bibliographic and documentary analysis. First of all, information about the main aspects of the municipal community gardens program and the profile of its beneficiaries was collected. It was observed that the activities are concentrated in the outskirts of the city and the majority of participants has a monthly family income of up to two minimum wages. Two other significant categories of practitioners were also mapped out: the first one configures an epistemic community, whose agenda about the use of urban space for urban agriculture practices gave rise to the municipal law of urban agriculture of Curitiba. There are also those who have agriculture as their means of social reproduction, but who tend to disappear due to urban expansion into previously rural areas. Thus, despite the wide range of actors who develop these practices across the territory, their visibility and insertion on the political agenda occur asymmetrically MenosRESUMO - A política da cidade de Curitiba em relação à agricultura urbana é destacada como caso de sucesso no Brasil, mas há na cidade outros movimentos em torno do tema que partem da sociedade civil. O presente estudo teve por objetivo identificar e caracterizar as diferentes categorias de praticantes de agricultura urbana em Curitiba. Para tal, foi realizada uma pesquisa descritiva mediante análise bibliográfica e documental. Primeiramente, foram levantados os principais aspectos do Programa Municipal de Hortas Comunitárias e o perfil dos seus beneficiários. Observou-se que as atividades se concentram nas áreas periféricas da cidade, e a maioria dos participantes possui renda familiar mensal de até 2 salários mínimos. Também foram mapeadas outras duas categorias de praticantes: a primeira conforma uma comunidade epistêmica, cuja reivindicação de uso do espaço urbano para práticas de agricultura urbana deu origem à Lei Municipal de Agricultura Urbana de Curitiba. Há também aqueles que têm na agricultura seu meio de reprodução social, mas que apresentam tendência ao desaparecimento em virtude da expansão urbana sobre áreas antes rurais. Assim, apesar da ampla gama de atores que desenvolvem essas práticas em todo o território, sua visibilidade e inserção na agenda política ocorrem de maneira assimétrica. ABSTRACT - The urban agriculture policy in the city of Curitiba, Brazil stands out as a successful case in Brazil, but there are other movements in the city about the theme f... Mostrar Tudo |
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Thesagro: |
Planejamento; Políticas Públicas; Segurança Alimentar. |
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Thesaurus Nal: |
Food security; Public policy; Urban planning. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1146900/1/Agricultura-urbana-em-Curitiba.pdf
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Marc: |
LEADER 03471naa a2200229 a 4500
001 2146900
005 2024-02-01
008 2022 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.35977/0104-1096.cct2022.v39.26959$2DOI
100 1 $aARAUJO, E. F.
245 $aAgricultura urbana em Curitiba$bum fenômeno heterogêneo e desigual.$h[electronic resource]
260 $c2022
500 $aTítulo em inglês: Urban agriculture in the city of Curitiba: a heterogeneous and unequal phenomenon.
520 $aRESUMO - A política da cidade de Curitiba em relação à agricultura urbana é destacada como caso de sucesso no Brasil, mas há na cidade outros movimentos em torno do tema que partem da sociedade civil. O presente estudo teve por objetivo identificar e caracterizar as diferentes categorias de praticantes de agricultura urbana em Curitiba. Para tal, foi realizada uma pesquisa descritiva mediante análise bibliográfica e documental. Primeiramente, foram levantados os principais aspectos do Programa Municipal de Hortas Comunitárias e o perfil dos seus beneficiários. Observou-se que as atividades se concentram nas áreas periféricas da cidade, e a maioria dos participantes possui renda familiar mensal de até 2 salários mínimos. Também foram mapeadas outras duas categorias de praticantes: a primeira conforma uma comunidade epistêmica, cuja reivindicação de uso do espaço urbano para práticas de agricultura urbana deu origem à Lei Municipal de Agricultura Urbana de Curitiba. Há também aqueles que têm na agricultura seu meio de reprodução social, mas que apresentam tendência ao desaparecimento em virtude da expansão urbana sobre áreas antes rurais. Assim, apesar da ampla gama de atores que desenvolvem essas práticas em todo o território, sua visibilidade e inserção na agenda política ocorrem de maneira assimétrica. ABSTRACT - The urban agriculture policy in the city of Curitiba, Brazil stands out as a successful case in Brazil, but there are other movements in the city about the theme from civil society. The goal of this paper was to identify and characterize different categories of urban agriculture practitioners in Curitiba. To this end, a descriptive research was carried out through bibliographic and documentary analysis. First of all, information about the main aspects of the municipal community gardens program and the profile of its beneficiaries was collected. It was observed that the activities are concentrated in the outskirts of the city and the majority of participants has a monthly family income of up to two minimum wages. Two other significant categories of practitioners were also mapped out: the first one configures an epistemic community, whose agenda about the use of urban space for urban agriculture practices gave rise to the municipal law of urban agriculture of Curitiba. There are also those who have agriculture as their means of social reproduction, but who tend to disappear due to urban expansion into previously rural areas. Thus, despite the wide range of actors who develop these practices across the territory, their visibility and insertion on the political agenda occur asymmetrically
650 $aFood security
650 $aPublic policy
650 $aUrban planning
650 $aPlanejamento
650 $aPolíticas Públicas
650 $aSegurança Alimentar
700 1 $aFUCK, M. P.
773 $tCadernos de Ciência & Tecnologia$gv. 39, n. 2, e26959, 2022.
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Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
20/04/1999 |
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Data da última atualização: |
20/04/1999 |
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Autoria: |
OLIVARES, F. L.; JAMES, E. K.; BALDANI, J. I.; DOBEREINER, Johanna. |
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Título: |
Infection of mottled stripe disease-susceptible and resistant sugar cane varieties by the endophytic diazotroph Herbaspirillum. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
New Phytologist, Oxford, v. 135, p. 723-737, 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
Leaves of a mottled stripe disease-susceptible cultivar (B-4362) and of a mottled stripe disease-resistant cultivar (SP 70-1143) of sugar cane (interspecific hybrids of Saccharum) were inoculated with the diazotrophic endophytes, Herbaspirillum rubrisubalbicans or Herbaspirillum seropedicae, via injection into the apex of the stem. At 7 and 20 d.a.i., H. seropedicae could be isolated only from a small necrotic area around the point of inoculation, where there was considerable degradation of host cells, and was not detected in any other part of the leaves. This suggested a hypersensitive response by the host to this bacterium, and no disease symptoms formed on either cultivar. By contrast, H. rubrisubalbicans could be re-isolated from throughout the infectedleaves of both cultivars at both harvests and produced widespread disease symptoms on the leaves of cv. B-4362. Symptoms consisted of necrotic regions near the point of inoculation, and red patches along the vertical axis of the leaves, where the bacteria had spread in the primary and secondary veins. The xylem-conducing elements in disease regions of leaves were filled with bacteria and, at the edges of disease symptoms, the vessels were filled with a gum which stained blue-green with toluidine blue. This material probably contained phenolic compounds, and was produced as a host defence response. Leaves of cv. SP70-1143 only developed small red stripes near the point of inoculation. These symptoms did not spread along the leaves, and the infected xylem vessels were never seen to be completely full of bacteria, Instead, the vessels contained encapsulated bacterial colonies attached to secondary wall deposition; these colonies were surrounded by blue-green material that might have been host-defence gums. In cv. B-4362, bacteria were abundant in the intercellular spaces of mesophyll adjacent to infected xylem, and also filled sub-stomatal cavities. Immunogold labelling using polyclonal antisera raised against H. rubrisubalbicans gave a weak signal with the bacteria in cv. SP 70-1143, showing that few binding sites were available to the antibodies. By contrast, bacteria in cv. B-4362 reacted strongly with the antibody, suggesting that they had a denser coating of immunoreactive mucus. In the later stages of infection of cv. B-4362, lysed bacteria were seen within degrated plant cells surrounded by a matrix of plant gums and bacterial mucus. This matrix reacted strongly to the H. rubrisubalbicans antibodies. Immunogold labelling using antibodies against nitrogenase component II showed that nitrogenase was expressed by bacteria in the early stages of infection of cv. B-4362, but not in later stages, or by bacteria infecting cv. SP 70-1143. MenosLeaves of a mottled stripe disease-susceptible cultivar (B-4362) and of a mottled stripe disease-resistant cultivar (SP 70-1143) of sugar cane (interspecific hybrids of Saccharum) were inoculated with the diazotrophic endophytes, Herbaspirillum rubrisubalbicans or Herbaspirillum seropedicae, via injection into the apex of the stem. At 7 and 20 d.a.i., H. seropedicae could be isolated only from a small necrotic area around the point of inoculation, where there was considerable degradation of host cells, and was not detected in any other part of the leaves. This suggested a hypersensitive response by the host to this bacterium, and no disease symptoms formed on either cultivar. By contrast, H. rubrisubalbicans could be re-isolated from throughout the infectedleaves of both cultivars at both harvests and produced widespread disease symptoms on the leaves of cv. B-4362. Symptoms consisted of necrotic regions near the point of inoculation, and red patches along the vertical axis of the leaves, where the bacteria had spread in the primary and secondary veins. The xylem-conducing elements in disease regions of leaves were filled with bacteria and, at the edges of disease symptoms, the vessels were filled with a gum which stained blue-green with toluidine blue. This material probably contained phenolic compounds, and was produced as a host defence response. Leaves of cv. SP70-1143 only developed small red stripes near the point of inoculation. These symptoms did not spread along the... Mostrar Tudo |
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Palavras-Chave: |
Bacterias; BNF; FBN; Fixacao biologica de nitrogenio; Nitrogen fixing bacteria; Sugar cane. |
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Thesagro: |
Bactéria; Cana de Açúcar; Folha. |
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Thesaurus NAL: |
Herbaspirillum rubrisubalbicans; Herbaspirillum seropedicae; leaves. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03613naa a2200301 a 4500
001 1621027
005 1999-04-20
008 1997 bl uuuu u00u1 u #d
100 1 $aOLIVARES, F. L.
245 $aInfection of mottled stripe disease-susceptible and resistant sugar cane varieties by the endophytic diazotroph Herbaspirillum.
260 $c1997
520 $aLeaves of a mottled stripe disease-susceptible cultivar (B-4362) and of a mottled stripe disease-resistant cultivar (SP 70-1143) of sugar cane (interspecific hybrids of Saccharum) were inoculated with the diazotrophic endophytes, Herbaspirillum rubrisubalbicans or Herbaspirillum seropedicae, via injection into the apex of the stem. At 7 and 20 d.a.i., H. seropedicae could be isolated only from a small necrotic area around the point of inoculation, where there was considerable degradation of host cells, and was not detected in any other part of the leaves. This suggested a hypersensitive response by the host to this bacterium, and no disease symptoms formed on either cultivar. By contrast, H. rubrisubalbicans could be re-isolated from throughout the infectedleaves of both cultivars at both harvests and produced widespread disease symptoms on the leaves of cv. B-4362. Symptoms consisted of necrotic regions near the point of inoculation, and red patches along the vertical axis of the leaves, where the bacteria had spread in the primary and secondary veins. The xylem-conducing elements in disease regions of leaves were filled with bacteria and, at the edges of disease symptoms, the vessels were filled with a gum which stained blue-green with toluidine blue. This material probably contained phenolic compounds, and was produced as a host defence response. Leaves of cv. SP70-1143 only developed small red stripes near the point of inoculation. These symptoms did not spread along the leaves, and the infected xylem vessels were never seen to be completely full of bacteria, Instead, the vessels contained encapsulated bacterial colonies attached to secondary wall deposition; these colonies were surrounded by blue-green material that might have been host-defence gums. In cv. B-4362, bacteria were abundant in the intercellular spaces of mesophyll adjacent to infected xylem, and also filled sub-stomatal cavities. Immunogold labelling using polyclonal antisera raised against H. rubrisubalbicans gave a weak signal with the bacteria in cv. SP 70-1143, showing that few binding sites were available to the antibodies. By contrast, bacteria in cv. B-4362 reacted strongly with the antibody, suggesting that they had a denser coating of immunoreactive mucus. In the later stages of infection of cv. B-4362, lysed bacteria were seen within degrated plant cells surrounded by a matrix of plant gums and bacterial mucus. This matrix reacted strongly to the H. rubrisubalbicans antibodies. Immunogold labelling using antibodies against nitrogenase component II showed that nitrogenase was expressed by bacteria in the early stages of infection of cv. B-4362, but not in later stages, or by bacteria infecting cv. SP 70-1143.
650 $aHerbaspirillum rubrisubalbicans
650 $aHerbaspirillum seropedicae
650 $aleaves
650 $aBactéria
650 $aCana de Açúcar
650 $aFolha
653 $aBacterias
653 $aBNF
653 $aFBN
653 $aFixacao biologica de nitrogenio
653 $aNitrogen fixing bacteria
653 $aSugar cane
700 1 $aJAMES, E. K.
700 1 $aBALDANI, J. I.
700 1 $aDOBEREINER, Johanna.
773 $tNew Phytologist, Oxford$gv. 135, p. 723-737, 1997.
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