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Titolo:
Gene duplication and mobile genetic elements in the morning glories
Autore:
Hoshino, A; Johzuka-Hisatomi, Y; Iida, S;
Indirizzi:
Natl Inst Basic Biol, Okazaki, Aichi 4448585, Japan Natl Inst Basic Biol Okazaki Aichi Japan 4448585 ki, Aichi 4448585, Japan
Titolo Testata:
GENE
fascicolo: 1-2, volume: 265, anno: 2001,
pagine: 1 - 10
SICI:
0378-1119(20010307)265:1-2<1:GDAMGE>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
BEARING VARIEGATED FLOWERS; SYNTHASE MULTIGENE FAMILY; TRANSPOSABLE ELEMENT; IPOMOEA-PURPUREA; DIHYDROFLAVONOL 4-REDUCTASE; PHARBITIS-NIL; JAPANESE; COMMON; CHALCONE; PIGMENTATION;
Keywords:
anthocyanin biosynthesis genes; divergence; evolution; gene duplication; mobile elements; multigene family;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Iida, S Natl Inst Basic Biol, Okazaki, Aichi 4448585, Japan Natl Inst Basic Biol Okazaki Aichi Japan 4448585 i 4448585, Japan
Citazione:
A. Hoshino et al., "Gene duplication and mobile genetic elements in the morning glories", GENE, 265(1-2), 2001, pp. 1-10

Abstract

We review gene duplication and subsequent structural and functional divergence in the anthocyanin biosynthesis genes in the Japanese and common morning glories and discuss their evolutionary implications. These plants appearto contain at least six copies of the CHS gene and three tandem copies of the DFR gene. Of these, the CHS-D and DFR-B genes are mainly responsible for Howls pigmentation and mutations in these genes confer white flowers. We compared the genomic sequences of these duplicated genes between the two morning glories and found small mobile element-like sequences (MELSs) and direct repeats (DRs) in introns and intergenic regions. The results indicate that the MELS elements: and DRs play significant roles in divergence after gene duplication. We also discuss DNA rearrangements occurring before and after speciation of these morning glories. DNA transposable elements belonging to the Ac/Ds or En/Spm families have acted as major spontaneous mutagens in these morning glories. We also describe the structural features of the first Mlr-related element found in the morning glories and polymorphisms found in the same species. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 06:58:42