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Production of 3-indolylacetic acid in root nodules and culture by a Rhizobium species isolated from root nodules of the leguminous pulse Phaseolus mungo
Ghosh S, Sengupta C, Maiti TK, Basu PS.
Jazyk angličtina Země Česko
- MeSH
- fazol metabolismus mikrobiologie MeSH
- kořenové hlízky rostlin metabolismus mikrobiologie MeSH
- kultivační média metabolismus MeSH
- kyseliny indoloctové metabolismus MeSH
- Rhizobium izolace a purifikace metabolismus růst a vývoj MeSH
The root nodules of Phaseolus mungo (a herbaceous leguminous pulse) contained a high amount of 3-indolylacetic acid (IAA). A tryptophan pool present in the nodule might play the role of precursor for IAA production. From the root nodule a Rhizobium sp. was isolated. The symbiont produced a large amount of IAA (142 microg/mL) from L-tryptophan-supplemented basal medium. The production of IAA by the symbiont was much increased over the control when a L-tryptophan (2 mg/mL) supplemented C-free mineral medium was enriched with mannitol (1 %), L-asparagine (0.3 %) and thiamine hydrochloride (1 microg/mL). The possible role of the rhizobial production of IAA on the rhizobia-legume symbiosis is discussed.
Lit.: 26
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- $a Ghosh, S.
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- $a Production of 3-indolylacetic acid in root nodules and culture by a Rhizobium species isolated from root nodules of the leguminous pulse Phaseolus mungo / $c Ghosh S, Sengupta C, Maiti TK, Basu PS.
- 314 __
- $a Department of Botany, Burdwan University, Golapbag, Burdwan, West Bengal
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- $a Lit.: 26
- 520 9_
- $a The root nodules of Phaseolus mungo (a herbaceous leguminous pulse) contained a high amount of 3-indolylacetic acid (IAA). A tryptophan pool present in the nodule might play the role of precursor for IAA production. From the root nodule a Rhizobium sp. was isolated. The symbiont produced a large amount of IAA (142 microg/mL) from L-tryptophan-supplemented basal medium. The production of IAA by the symbiont was much increased over the control when a L-tryptophan (2 mg/mL) supplemented C-free mineral medium was enriched with mannitol (1 %), L-asparagine (0.3 %) and thiamine hydrochloride (1 microg/mL). The possible role of the rhizobial production of IAA on the rhizobia-legume symbiosis is discussed.
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