title: Inheritance of mitochondrial DNA in the Pennate diatom Haslea ostrearia (Naviculaceae) during auxosporulation suggests a uniparental transmission.
abstract: We present the first study examining mtDNA transmission in diatoms, using sexual progeny of the pennate species Haslea ostrearia (Naviculaceae). A fragment of the cytochrome oxidase subunit I gene (cox1) with 7 nucleic substitutions between parental clones was used as a parental tracer in 16 F1 clones obtained from two pairs of mating crosses. Each cross involved a parental clone isolated from France (Bay of Bourgneuf) and Sweden (Kattegat Bay). We determined that all progeny possessed only one cox1 parental haplotype. These results suggest that the mitochondrial DNA transmission in H. ostrearia is uniparental. Implications and new topics of investigation are discussed.
authors.affiliation: MMS EA 2160, Faculté des Sciences et des Techniques, Université du Maine, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France.
authors.forename: Romain
authors.initials: R
authors.lastname: Gastineau
authors.forename: Vincent
authors.initials: V
authors.lastname: Leignel
authors.forename: Boris
authors.initials: B
authors.lastname: Jacquette
authors.forename: Yann
authors.initials: Y
authors.lastname: Hardivillier
authors.forename: Angela
authors.initials: A
authors.lastname: Wulff
authors.forename: Pierre
authors.initials: P
authors.lastname: Gaudin
authors.forename: Djamel
authors.initials: D
authors.lastname: Bendahmane
authors.forename: Nicolaï A
authors.initials: NA
authors.lastname: Davidovich
authors.forename: Irena
authors.initials: I
authors.lastname: Kaczmarska
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Mouget
mesh_terms: D000818:Animals; D001483:Base Sequence; D003433:Crosses, Genetic; D051545:Cyclooxygenase 1 / Q000737:chemistry / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics*; D017377:Diatoms / Q000145:classification / Q000235:genetics* / Q000502:physiology; D005602:France; D006239:Haplotypes; D008928:Mitochondria / Q000235:genetics; D008969:Molecular Sequence Data; D017422:Sequence Analysis, DNA; D013548:Sweden
chemical_list: D004272:DNA, Mitochondrial; D051545:Cyclooxygenase 1