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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Biodegradation of paclobutrazol: a plant growth regulator used in irrigated mango orchard soil.
Autores:  VAZ, F.
SANTOS FILHO, E.
SILVA, S.
ARAÚJO, S.
ARNAUD, T. S.
BANDEIRA, A.
VIDAL, A. C. B.
STAMFORD, N. P.
MOUCO, M. A. do C.
GOUVEIA, E.
Data:  2015-12-17
Ano:  2015
Palavras-chave:  Biodegradação
Paclobutrazol
PBZ
Mangifera indica
Manga
Regulador de crescimento
Irrigação
Mango
Growth regulator
Pseudomonas
Resumo:  Paclobutrazol (PBZ), [2RS,3RS]-1-[4-chlorophenyl]-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl) pentan-3-ol, consists of a triazole ring and a benzene ring-chloro linked to a carbon chain open. It is a plant growth regulator widely used in many crops in order to produce fruit throughout the year by inhibiting gibberellin synthesis, a hormone responsible for the vegetative plant growth. Actually, studies are showing that paclobutrazol remains active in the soil for a long time, affecting the growth and development of subsequent crops by reducing plant vigor. Biodegradation is an effective and cheap process that can to degrade or transform contaminants to less toxic or nontoxic. In this work, the biodegradation of paclobutrazol was studied using in submersed culture and saturated and unsaturated soils. In these conditions, experiments with biostimulation and bioaugmentation were performed. In the experiments carried out in submersed culture, with biostimulation by addition of glycerol, the PBZ biodegradation was higher than that with PBZ as sole carbon source. The biodegradation of PBZ in unsaturated soils was more efficient when soil samples with a history of application of PBZ were used. The highest number of applications of PBZ favored biodegradation. The biodiversity of the microbiota in the soil favored the biodegradation of PBZ aromatic rings. PBZ was not seen to be phytotoxic and the biodegraded products increased the germination index.

2015
Tipo:  Capítulo em livro científico (ALICE)
Idioma:  Inglês
Identificador:  55241

http://www.alice.cnptia.embrapa.br/handle/doc/1031964

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/135847/1/Mouco-2015.pdf

dx.doi.org/10.5772/60818
Editor:  In: CHAMY, R.; ROSENKRANZ, F.; SOLER, L. (Ed.). Biodegradation and bioremediation of polluted systems: new advances and technologie. Rijeka, Croatia: InTech, 2015.
Relação:  Embrapa Semiárido - Capítulo em livro científico (ALICE)
Formato:  cap. 5, p. 85-107.
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