Parassexualidade e produção de amiloglicosidase em Aspergillus niger

AUTOR(ES)

Marcia Masiero

DATA DE PUBLICAÇÃO

1988

RESUMO

This work had been done aiming the isolation and genetical analysis or auxotrophic and resistant mutants In order to enhance the number of identified linkage groups in a industrial strain. It was also assayed the glucoamylase production or mutants, diploids and parental strains. The mutations to Ethidium Bromide and Malaquite Green resistance showed to be recessive e semi-dominant respectively, the auxotrophlc ones, arg1, met1, lys1, tio1, and mys, showed to be recessive. The gene nic3 seemed to be allele of nic1, and were denominated nic A3 and nic A1. It was possible to Identify four linkage groups in this work. The gene order in linkage groups I and IV was not determined. I nic A 1, fwn,1 olv 3, mgr2, ebr5, tio1, mys1 II pab1 III lys2 IV arg1, met1 None of the diploids or any other strain tested showed significant eleveted levels of glucoamylase-production compared to the parental strain pab1, fwn1. Mutants arg1, lys1, ebr5, tio1 and pur1, had their glucoamylase production reduced and mgr2, met1 and mys1 did not have their yields altered significantly compared to the parental

ASSUNTO(S)

aspergilos analise enzimatica

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