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Characterization of homeodomain-leucine zipper genes in the fern Ceratopteris richardii and the evolution of the homeodomain-leucine zipper gene family in vascular plants.
Mol Biol Evol. 1999 Apr; 16(4):544-52.MB

Abstract

The homeodomain-leucine zipper (HD-Zip) genes encode transcription factors that are characterized by the presence of both a homeodomain and a leucine zipper motif. They belong to the homeobox gene superfamily and have been reported only from flowering plants. This article is the first report on the ferm HD-Zip genes (named Crhb1-Crhb11) isolated from the homosporous ferm Ceratopteris richardii. Phylogenetic analyses of the II Crhb genes with previously reported angiosperm HD-Zip genes show that the Crhb genes belong to three of the four different angiosperm HD-Zip subfamilies (HD-Zip I, II, and IV), indicating that these subfamilies of HD-Zip genes originated before the diversification of the ferm and seed plant lineages. The Crhb4-Crhb8 and Crhb11 genes belong to the HD-Zip I subfamily but differ from angiosperm HD-Zip I genes by the presence of a seven-amino-acid indel in the leucine zipper motif. By the northern analyses, Crhb1 and Crhb3 were expressed only in gametophyte tissue. Expression of Crhb2 and Crhb11 genes could not be detected in any tissue examined, while all other Crhb genes were expressed in most sporophytic and gametophytic tissues. Although the functions of the Crhb genes in Ceratopteris are unknown, their patterns of expression suggest that they regulate developmental or physiological processes common to both the gametophyte and the sporophyte generations of the fern. Differences in the expression of Crhb1 between male gametophytes and male-hermaphrodite mixed populations of gametophytes suggests that the Crhb1 gene is involved in gametophytic sex determination.

Authors+Show Affiliations

Department of Biological Sciences, Graduate School of Science, University of Tokyo, Japan.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

10331279

Citation

Aso, K, et al. "Characterization of Homeodomain-leucine Zipper Genes in the Fern Ceratopteris Richardii and the Evolution of the Homeodomain-leucine Zipper Gene Family in Vascular Plants." Molecular Biology and Evolution, vol. 16, no. 4, 1999, pp. 544-52.
Aso K, Kato M, Banks JA, et al. Characterization of homeodomain-leucine zipper genes in the fern Ceratopteris richardii and the evolution of the homeodomain-leucine zipper gene family in vascular plants. Mol Biol Evol. 1999;16(4):544-52.
Aso, K., Kato, M., Banks, J. A., & Hasebe, M. (1999). Characterization of homeodomain-leucine zipper genes in the fern Ceratopteris richardii and the evolution of the homeodomain-leucine zipper gene family in vascular plants. Molecular Biology and Evolution, 16(4), 544-52.
Aso K, et al. Characterization of Homeodomain-leucine Zipper Genes in the Fern Ceratopteris Richardii and the Evolution of the Homeodomain-leucine Zipper Gene Family in Vascular Plants. Mol Biol Evol. 1999;16(4):544-52. PubMed PMID: 10331279.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of homeodomain-leucine zipper genes in the fern Ceratopteris richardii and the evolution of the homeodomain-leucine zipper gene family in vascular plants. AU - Aso,K, AU - Kato,M, AU - Banks,J A, AU - Hasebe,M, PY - 1999/5/20/pubmed PY - 1999/5/20/medline PY - 1999/5/20/entrez SP - 544 EP - 52 JF - Molecular biology and evolution JO - Mol Biol Evol VL - 16 IS - 4 N2 - The homeodomain-leucine zipper (HD-Zip) genes encode transcription factors that are characterized by the presence of both a homeodomain and a leucine zipper motif. They belong to the homeobox gene superfamily and have been reported only from flowering plants. This article is the first report on the ferm HD-Zip genes (named Crhb1-Crhb11) isolated from the homosporous ferm Ceratopteris richardii. Phylogenetic analyses of the II Crhb genes with previously reported angiosperm HD-Zip genes show that the Crhb genes belong to three of the four different angiosperm HD-Zip subfamilies (HD-Zip I, II, and IV), indicating that these subfamilies of HD-Zip genes originated before the diversification of the ferm and seed plant lineages. The Crhb4-Crhb8 and Crhb11 genes belong to the HD-Zip I subfamily but differ from angiosperm HD-Zip I genes by the presence of a seven-amino-acid indel in the leucine zipper motif. By the northern analyses, Crhb1 and Crhb3 were expressed only in gametophyte tissue. Expression of Crhb2 and Crhb11 genes could not be detected in any tissue examined, while all other Crhb genes were expressed in most sporophytic and gametophytic tissues. Although the functions of the Crhb genes in Ceratopteris are unknown, their patterns of expression suggest that they regulate developmental or physiological processes common to both the gametophyte and the sporophyte generations of the fern. Differences in the expression of Crhb1 between male gametophytes and male-hermaphrodite mixed populations of gametophytes suggests that the Crhb1 gene is involved in gametophytic sex determination. SN - 0737-4038 UR - https://www.unboundmedicine.com/medline/citation/10331279/Characterization_of_homeodomain_leucine_zipper_genes_in_the_fern_Ceratopteris_richardii_and_the_evolution_of_the_homeodomain_leucine_zipper_gene_family_in_vascular_plants_ DB - PRIME DP - Unbound Medicine ER -