title: Influence of a long duration exposure, 69 months, to the space flight factors in Artemia cysts, tobacco and rice seeds.
abstract: Three french laboratories have participated in the Free Flyer Biostack experiment.  Artemia cysts, tobacco seeds and rice caryopsis and embryos were used.  Biological objects in monolayers were dead.  In opposite, a large fraction of samples used in bulk survived.  A stimulatory effect occurred in the first steps of development in Artemia cysts.  In fact, the larval survival was unchanged or slightly reduced.  In tobacco a drastic decrease in germination and survival rate was observed.  Space flight did not induce genetic changes.  In rice, results depend on the variety which was investigated; the growth rate stimulation in flight samples is discussed with respect to controls.
authors.affiliation: Laboratoire de Radiobiologie et Biologie Spatiale, Toulouse, France.
authors.forename: H
authors.initials: H
authors.lastname: Planel
authors.forename: Y
authors.initials: Y
authors.lastname: Gaubin
authors.forename: B
authors.initials: B
authors.lastname: Pianezzi
authors.forename: M
authors.initials: M
authors.lastname: Delpoux
authors.forename: J
authors.initials: J
authors.lastname: Bayonove
authors.forename: J C
authors.initials: JC
authors.lastname: Bes
authors.forename: C
authors.initials: C
authors.lastname: Heilmann
authors.forename: G
authors.initials: G
authors.lastname: Gasset
mesh_terms: D000818:Animals; D001156:Artemia / Q000196:embryology / Q000235:genetics / Q000528:radiation effects*; D003359:Cosmic Radiation; D005720:Gamma Rays; D018525:Germination / Q000528:radiation effects*; D012275:Oryza / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects*; D010947:Plants, Toxic; D012639:Seeds / Q000528:radiation effects; D013026:Space Flight / Q000295:instrumentation*; D018531:Spacecraft; D013819:Thermoluminescent Dosimetry; D013997:Time Factors; D014026:Nicotiana / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects*