Polyarnines and Somatic Embryogenesis in Carrot. III. Effects of Methylglyoxal bis(guanylhydrazone)

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概要

• 論文の詳細を見る

• The effects of methylglyoxal bis(guanylhydrazone) (MGBG) on somatic embryogenesis, titres of cellular polyamines and 1-aminocyclopropane-1-carboxylic acid, and the activity of arginine decarboxylase (ADC) were studied using suspension cultures of carrot (Daucus carota L.). Whereas MGBG (0.1-0.5 mM) significantly inhibited the cellular levels of spermidine and spermine, putrescine levels were higher in the treated tissue. MGBG also promoted ACC levels in the cells. The activity of ADC was inhibited in the presence of MGBG. Somatic embryogenesis in the auxin-free medium was completely inhibited by MGBG. The effects of MGBG on somatic embryogenesis were reversed by 0.1-0.2 mM spermidine but not by spermine. These results are consistent with the suggestion that an interaction between ethylene and polyamine biosynthetic pathways through competition for the common precursor, S-adenosylmethionine, plays an important role in the development of somatic embryos in carrot cell cultures.

• 日本植物生理学会の論文

著者

• Papa Nancy

  Department Of Plant Biology University Of New Hampshire:(present)nancy S. Papa In Vitron Corporation

• KHAN A.

  Department of Electrical and Computer Engineering, University of South Carolina

• Minocha Subhash

  Department Of Plant Biology University Of New Hampshire

• Minocha Subhash

  Department Of Botany And Plant Pathology University Of New Hampshire

• Samuelsen Andrew

  Department of Plant Biology, University of New Hampshire

• Samuelsen Andrew

  Department Of Plant Biology University Of New Hampshire

• Khan A.

  Department Of Plant Biology University Of New Hampshire:(present)dr. A. Jamal Khan Department Of Plant Science College Of Agriculture Sultan Qaboos University

• Khan A.

  Department Of Civil Engineering Clemson University

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