• MeSH
• fazol * MeSH
• funkční potraviny MeSH
• jedlá semena MeSH
• lidé MeSH
• Check Tag
• lidé MeSH

• MeSH
• alfa-amylasy analýza   MeSH
• fazol chemie   MeSH
• finanční podpora výzkumu jako téma MeSH
• houby enzymologie   MeSH
• insekticidy farmakologie   chemie   MeSH
• rostlinné lektiny farmakologie   MeSH
• sekvence aminokyselin MeSH
• vazebná místa MeSH
• zvířata MeSH
• Check Tag
• zvířata MeSH

Reactive oxygen species are known to increase in plant senescence. We investigated the participation of antioxidative enzymes in initiation of cotyledon senescence. Senescence of bean (Phaseolus vulgaris L.) cotyledons was modulated by UV C irradiation and by the decapitation of plant apices. Senescence was accompanied by a decrease of protein content and by a decrease of photochemical efficiency. A drop in activity of antioxidative enzymes preceded the onset of senescence in control plants. In cotyledons with prolonged life span, the decrease of antioxidant activities and the markers of senescence onset appeared at a similar age as in controls. Thus we presumed that the period from senescence initiation to cotyledon abscission was extended. On the other hand, in UV C irradiated plants we did not observe actual senescence initiation, and antioxidant enzymes although elevated, did not effectively play their role. The decrease of antioxidant enzymes activity and the markers of senescence appeared at a similar age both in control and in decapitated (D) plants, so we can presume that we prolonged mainly the period from senescence onset to cotyledon abscission in D plants. In UV C irradiated plants the antioxidative enzymes were probably destroyed before the process of senescence could begin. 2005 John Wiley & Sons, Ltd.

• MeSH
• antioxidancia metabolismus   MeSH
• fazol metabolismus   růst a vývoj   MeSH
• financování organizované MeSH
• glutathionreduktasa metabolismus   MeSH
• izoenzymy metabolismus   MeSH
• katalasa metabolismus   MeSH
• peroxidasy metabolismus   MeSH
• rozpustnost MeSH
• superoxiddismutasa metabolismus   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.

• 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

Common bean seed lots collected from different seed dealers and Malawii agriculture station were screened for the presence of Xanthomonas axonopodis pv. phaseoli. In the laboratory the pathogen was isolated following the routine laboratory assay method, i.e. direct plating method using yeast extract-dextrose-calcium carbonate agar medium (YDC). Yellow, convex, mucoid colonies of Xanthomonas were consistently isolated on YDC from seed samples. The presumptive pathogen was confirmed by isolation on semiselective medium, such as mTBM and MD5A. Further, the pathogen was confirmed by biochemical, physiological and, finally, the pathogenicity tests. Five samples out of seven were positive for Xanthomonas. The isolates were found to cause common blight of 3-week-old common bean plants by 7 d after inoculation. Bacteria with the same characteristics as those inoculated were re-isolated from the infected plants.

• MeSH
• bakteriologické techniky metody   MeSH
• fazol mikrobiologie   MeSH
• kultivační média chemie   MeSH
• nemoci rostlin mikrobiologie   MeSH
• semena rostlinná mikrobiologie   MeSH
• techniky typizace bakterií MeSH
• virulence MeSH
• Xanthomonas axonopodis izolace a purifikace   metabolismus   patogenita   MeSH
• Geografické názvy
• Egypt MeSH

• Publikační typ
• abstrakt z konference MeSH

• MeSH
• antispermatogenní látky farmakologie   MeSH
• antitumorózní látky farmakologie   MeSH
• embryo savčí účinky léků   MeSH
• endonukleasy specifické pro jednořetězcové nukleové kyseliny * farmakologie   imunologie   MeSH
• experimentální nádory * farmakoterapie   MeSH
• fazol * enzymologie   MeSH
• lidé MeSH
• myši nahé MeSH
• myši MeSH
• nádorové buněčné linie MeSH
• pankreatická ribonukleasa farmakologie   imunologie   MeSH
• proliferace buněk účinky léků   MeSH
• spermatogeneze účinky léků   MeSH
• spermie účinky léků   MeSH
• teratogeny farmakologie   MeSH
• zvířata MeSH
• Check Tag
• lidé MeSH
• myši MeSH
• zvířata MeSH

• Publikační typ
• abstrakt z konference MeSH

• MeSH
• fazol fyziologie   účinky léků   MeSH
• klíčení fyziologie   účinky léků   MeSH
• tetracykliny farmakologie   MeSH

• Klíčová slova
• superpotraviny,
• MeSH
• Beta vulgaris MeSH
• Brassica MeSH
• česnek MeSH
• fazol MeSH
• lidé MeSH
• Vaccinium vitis-idaea MeSH
• Vitis MeSH
• zdravá strava * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• populární práce MeSH