Physical and chemical mutagenesis on a mycophagous nematode Aphelenchoides composticola (M.T. Franklin, 1957) (in French)
Chemical mutagens as EMS, acriflavine, acridine, colchicine, nitrous acide and physical mutagens, such as X rays, have been used on the gonochoric mycophagous Nematode Aphelenchoides composticola. They show a nematicid activity due, to their toxicity on treated Nematodes and to the induction of lethal mutations affecting particularly early stages of gametogenesis. They produce abnormal strains dwarfs or giants (up to 25% of the population). Concentrations of chemical mutagens varying from 0.2 to 0.5% correspond to the optimal production of abnormalities. Similar results were obtained by irradiation near to 2000r. The action of the mutagens shows some differences: EMS and X rays generally produce dwarfs, whereas acriflavine, acridine, colchicine or nitrous acid induced only giants. Abnormal strains appear: in the F$sub 1$, generation by X rays or acridine treatments; in the F$sub 2$ or F$sub 3$ generation by acriflavine, colchicine, nitrous acid or EMS action. The abnormal strains could be either variants or mutants and from these we select: four dwarfs B, C, D, E, induced by EMS 0.5% for 24 hours appearing in the F$sub 3$ generation; or dwarf F induced by irradiation of 1500r appearing in the F$sub 1$ generation. All these selected mutants are autosomal recessive single factors D and C controlled by two alleles of the some locus. (FR)
- Research Organization:
- Lyon-1 Univ., 69 - Villeurbanne (France)
- NSA Number:
- NSA-33-012432
- OSTI ID:
- 4143512
- Journal Information:
- Ann. Zool. Ecol. Anim., v. 6, no. 1, pp. 111-130, Journal Name: Ann. Zool. Ecol. Anim., v. 6, no. 1, pp. 111-130; ISSN AZEAA
- Country of Publication:
- France
- Language:
- French
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Related Subjects
*ACRIFLAVINE-- GENETIC EFFECTS
*COLCHICINE-- GENETIC EFFECTS
*EMS-- GENETIC EFFECTS
*LETHAL MUTATIONS-- RADIOINDUCTION
*NEMATODES-- GENETIC RADIATION EFFECTS
*NITROUS ACID-- GENETIC EFFECTS
560153* --Biomedical Sciences
Applied Studies--Radiation Effects--Radiation Effects on Animals--Invertebrates
GAMETOGENESIS
MORPHOLOGICAL CHANGES
MUTANTS
N48530* --Life Sciences--Radiation Effects on Animals-- Invertebrates
TOXICITY
X RADIATION