The action of penicillin in mungbean (Phaseolus aureus L.) seedlings and wheat (Triticum vulgare L.) coleoptile sections
TL;DR: Penicillin inhibits intact seedling elongation probably through an Effect on cell division apparently without inhibiting cell enlargement.
Abstract: Penicillin caused elongation inhibition of mungbean (Phaseolus aureus L.) seedlings at concentrations above 100 mgl-1. Inhibition of hypocotyl could be reduced to different degrees by manganese, pyruvate, succinate, fumarate, malate, GA3, purines, pyrimidines and nucleosides, whereas the amino acids except cysteine were not effective. Penicillin inhibited neither elongation of wheat coleoptile sections nor the cell enlargement induced by IAA in this tissue. Thus penioillin inhibits intact seedling elongation probably through an Effect on cell division apparently without inhibiting cell enlargement.
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TL;DR: Calli were initiated from carrot root expiants and grown on media supplemented with a combination of carbenicillin and vancomycin and could be replaced by penicillin G; other penicillins tested in this combination, however, caused only limited growth.
Abstract: Calli were initiated from carrot (Daucus carota L. subsp. sativus Hoffm.) root expiants and grown on media supplemented with a combination of carbenicillin at 0.3 mg/ml and vancomycin at 0.1 mg/ml in the absence of plant hormones or hormone analogs. The growth rate was about half of that obtained with a combination of α-naphthaleneacetic acid and N6-benzyladenine at 1 mg/l each. Carbenicillin in the combination with vancomycin could be replaced by penicillin G; other penicillins tested in this combination, however, caused only limited growth. The calli produced can be grown on media supplemented with α-naphthaleneacetic acid and N6-benzyladenine, but not on media without the antibiotics and the plant growth substances. Calli obtained using the plant growth substances can also be subcultured on media supplemented with only the antibiotics.
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TL;DR: The levels of gibberellin and cytokinin like substances are increased in mungbean (Vigna radiata L. Wilczek) seedlings byPenicillin treatment, and the possible role of penicillin in regulating the hormone levels in plant tissues is suggested.
Abstract: The levels of gibberellin and cytokinin like substances are increased in mungbean (Vigna radiata L. Wilczek) seedlings by penicillin treatment. The possible role of penicillin in regulating the hormone levels in plant tissues is suggested.
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