Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 1 de 1
Filtrar
Añadir filtros








Intervalo de año
1.
Braz. j. microbiol ; 48(3): 544-550, July-Sept. 2017. tab, graf
Artículo en Inglés | LILACS | ID: biblio-889154

RESUMEN

Abstract Presence of the relatively new sulfonylurea herbicide monosulfuron-ester at 0.03-300 nmol/L affected the growth of two non-target nitrogen-fixing cyanobacteria (Anabaena flos-aquae and Anabaena azotica) and substantially inhibited in vitro Acetolactate synthase activity, with IC50 of 3.3 and 101.3 nmol/L for A. flos-aquae and A. azotica, respectively. Presenting in 30-300 nmol/L, it inhibited protein synthesis of the cyanobacteria with less amino acids produced as its concentration increased. Our findings support the view that monosulfuron-ester toxicity in both nitrogen-fixing cyanobacteria is due to its interference with protein metabolism via inhibition of branch-chain amino acid biosynthesis, and particularly Acetolactate synthase activity.


Asunto(s)
Pirimidinas/toxicidad , Compuestos de Sulfonilurea/toxicidad , Anabaena/efectos de los fármacos , Anabaena/metabolismo , Dolichospermum flos-aquae/efectos de los fármacos , Dolichospermum flos-aquae/metabolismo , Ésteres/toxicidad , Herbicidas/toxicidad , Fijación del Nitrógeno/efectos de los fármacos , Anabaena/genética , Dolichospermum flos-aquae/genética , Aminoácidos/metabolismo , Nitrógeno/metabolismo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA