Effects of monosulfuron-ester on metabolic processes of nitrogen-fixing cyanobacteria Anabaena flos-aquae and Anabaena azotica
Braz. J. Microbiol.
; 48(3): 544-550, jul.-set. 2017. graf, tab
Article
em En
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| ID: vti-728621
Biblioteca responsável:
BR68.1
Localização: BR68.1
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.(AU)
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Base de dados:
VETINDEX
Assunto principal:
Cianobactérias
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Dolichospermum flosaquae
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Ésteres
Idioma:
En
Revista:
Braz. J. Microbiol.
Ano de publicação:
2017
Tipo de documento:
Article
/
Project document