Selenium as a novel regulator of porphyrin biosynthesis in germinating seedlings of mung bean (Phaseolus vulgaris).
Biochem Int
; 22(3): 441-6, 1990 Nov.
Article
em En
| MEDLINE
| ID: mdl-2076102
ABSTRACT
5-Aminolevulinic acid, porphyrin and chlorophyll contents as well the activities of 5-aminolevulinic acid dehydratase and PBG deaminase were studied in selenium treated mung bean seedlings. Selenium had no effect on 5-aminolevulinic acid synthetic ability but inhibited 5-aminolevulinic acid dehydratase and PBG deaminase activities. Further, it was observed that selenium induced accumulation of protoporphyrin-IX and Mg-protoporphyrin ester and decreased chlorophyll levels in both light and dark-grown seedlings. The results suggest the possible regulatory role of selenium on chlorophyll synthesis by interacting with sulfhydryl containing enzymes 5-aminolevulinic acid dehydratase and porphobilinogen deaminase.
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Base de dados:
MEDLINE
Métodos Terapêuticos e Terapias MTCI:
Terapias_biologicas
Assunto principal:
Plantas Medicinais
/
Porfirinas
/
Selênio
/
Clorofila
/
Ácido Aminolevulínico
/
Fabaceae
Idioma:
En
Revista:
Biochem Int
Ano de publicação:
1990
Tipo de documento:
Article
País de afiliação:
Índia