Modulation of IAA production in Cyanobacteria by tryptophan and light

• Autorzy: Prasanna R , Joshi M. , Rana A. , Nain L.
• Języki publikacji: EN

Abstrakty

EN

Cyanobacteria represent less a investigated group of prokaryote, in terms of their plant growth promoting potential, especially in relation to the production of phytohormones. The present investigation was aimed towards analyzing growth kinetics, indole acetic acid (IAA) production and acetylene reduction activity (ARA) as an index of nitrogen fixation in two selected cyanobacteria) strains belonging to the genus Anahaena, as influenced by tryptophan supplementation and lighkdark conditions. Interesting observations were recorded in terms of enhancement of IAA production accompanied by protein and chlorophyll accumulation in the two cyanobacterial strains grown in media without tryptophan and incubated under lightidark or continuous light conditions. Colorimetric and chromatographic analyses supported the observations that tryptophan is not essential as a precursor for IAA biosynthesis in these cyanobacteria. Further study is in progress to identify genes involved in the tryptophan independent pathway for IAA biosynthesis.

Słowa kluczowe

EN

IAA zob.indoloacetic acid; indoloacetic acid; Cyanoprokaryota; chlorophyll; nitrogen fixation; plant growth; tryptophan; phytohormone; microorganism; light; indole-3-acetic acid formation

• Wydawca: -
• Czasopismo: Polish Journal of Microbiology
• Rocznik: 2010
• Tom: 59
• Numer: 2
• Opis fizyczny: p.99-105,fig.,ref.

Twórcy

autor

Prasanna R

• Indian Agricultural Research Institute, New Delhi 110012, India

autor

Joshi M.

autor

Rana A.

autor

Nain L.

Bibliografia

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