RELATIONS BETWEEN ROOT GROWTH AND SENSITIVITY OF ROOT MERISTEM TO VARIOUS RADIOMIMETIC AGENTS IN VICIA FABA

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Chromosoma (West Germany)

OSTI ID:4718992

Rieger, R; Michaelis, A

The sensitivity pattern of the V. faba main root meristem against the radiomimetic compounds ethanol, Myleran, and nitrogen mustard (HN-2) was found to be dependent on root length. In the case of ethanol sensitivity, measured by the percentage of metaphases with chromosome aberrations, it was similar in 2- and 4- cm roots. Further enlargement of roots up to 10 cm in length caused a drastic decrease in the number of damaged cells. The decrease was not so striking and happened later when Myleran and HN-2 were used. No sensitivity differences between 2-cmlong main and lateral roots were found when treated with Myleran or HN-2. On the contrary, lateral rootlets showed practically no aberrations after treatment with ethanol, the percentage of damaged cells in the main root meristem being 44%. The results are discussed in relation to whether the sensitivity differences are real or only spurious. It was concluded, that changes in the sensitivlty pattern are true and probably caused by metabolic changes in the meristem cells, correlated with growth of the root, and upon which the 3 radiomimetic compounds reacted differently because of different modes of action. (H.H.D.)

• Research Organization: Deutsche Akademie der Wissenschaften, Berlin
• NSA Number: NSA-17-021503
• OSTI ID: 4718992
• Journal Information: Chromosoma (West Germany), Journal Name: Chromosoma (West Germany) Vol. Vol: 11; ISSN CHROA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

BIOLOGY AND MEDICINE
CHEMICALS
DRUGS
ETHANOL
METABOLISM
MITOSIS
MYLERAN
NITROGEN COMPOUNDS
NITROGEN MUSTARD
ORGANIC NITROGEN COMPOUNDS
PLANTS
QUANTITY RATIO
RADIOMIMETIC DRUGS
RADIOSENSITIVITY
ROOTS
TISSUES
VICIA