title: Isolation and characterization of mRNAs accumulated during in-vitro flower bud formation.
abstract: The development of vegetative and generative buds on thin-layer explants of tobacco (Nicotiana tabacum L. cv. Samsun) has been studied at the level of translatable mRNA to detect changes in the mRNA population during bud initiation and differentiation, and several quantitative differences were found. By differential screening of a cDNA library obtained from flower-bud-regenerating explants we have isolated a group of six cDNA clones representing genes that are preferentially expressed during in-vitro flower bud formation. Nucleotide sequence analysis of one of these cDNAs, pAP8, showed that the most likely open reading frame has some typical characteristics of, and homology with, extensin-like genes. Northern blot analysis and in-situ hybridization suggest a specific role for these extensin-like genes in flower bud initiation on tobacco pedicel explants.
authors.affiliation: Department of Experimental Botany, University of Nijmegen, The Netherlands.
authors.forename: A J
authors.initials: AJ
authors.lastname: Peeters
authors.forename: M
authors.initials: M
authors.lastname: Proveniers
authors.forename: A
authors.initials: A
authors.lastname: van Hoek
authors.forename: M
authors.initials: M
authors.lastname: Schreuder
authors.forename: W
authors.initials: W
authors.lastname: Gerards
authors.forename: G W
authors.initials: GW
authors.lastname: Barendse
authors.forename: G J
authors.initials: GJ
authors.lastname: Wullems
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D015139:Blotting, Southern; D018076:DNA, Complementary; D018744:DNA, Plant; D017403:In Situ Hybridization; D008969:Molecular Sequence Data; D010947:Plants, Toxic; D014176:Protein Biosynthesis; D012333:RNA, Messenger / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D018749:RNA, Plant / Q000302:isolation & purification / Q000378:metabolism*; D014026:Nicotiana / Q000235:genetics* / Q000254:growth & development
chemical_list: D018076:DNA, Complementary; D018744:DNA, Plant; D012333:RNA, Messenger; D018749:RNA, Plant