Azospirillum brasilense induces the production of antimicrobian 6-metoxi-2-benzoxazolinona (MBOA) in the foliage and root of wheat seedlings (Triticum aestivum L.)
DOI:
https://doi.org/10.35830/cn.vi85.617Keywords:
Benzoxazolinoids, Allelochemical, Gas chromatography, Thin layer chromatographyAbstract
Benzoxazinoids (Bx) are chemical compounds derived from hydroxamic acids with allelochemical
and antimicrobial properties. In this study, the effect of Azospirillum brasilense on Bx production
in wheat seedlings is reported. The benzoxazolinone 6-methoxybenzoxazolin-2-one (MBOA)
was identified in extracts of seedlings, four days after germination, by GC/MS analysis. In natural
conditions, the metabolite was higher accumulated in foliage than in root. In foliage, their accumulation
increased 24 h after inoculation with A. brasilense, and in response to inoculum concentration.
The grown of the bacterium in presence of MBOA slightly decreased its growth. The
probable function o f M B O A in relation with its role during the interaction of the bacteria
with wheat saddling is discussed.
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