The conserved region of numerous MADS genes in gulfweed (Sargassum fulvellum) was cloned by PCR with degenerate primers. Analysis of seventy individual clones resulted in the identification of nineteen types of nucleotide sequences. There sequences encode portions of the MADS domain in four distinctive groups. Six clones belong to the AGAMOUS subfamily, ten to AGL2, and two to AGL12. The remaining one clone is distinctive and appears to be diverged from an ancestor of the AGL2 and AP1 groups. There were no A or B class MADS genes. These results suggest that, as found in land plants, MADS genes also play major roles in controlling the development of algae.
alga evolution MADS gene transcription factor
This is a preview of subscription content, log in to check access.
Albert VA (1999) Shoot apical meristems and floral patterning: an evolutionary perspective. Trends Plant Sci39: 84–86CrossRefGoogle Scholar
Hasebe M, Wen CK, Kato M, Banks JA (1998) Characterization of MADS homeotic genes in the fernCeratopteris richardii. Proc Natl Acad Sci USA26: 6222–6227CrossRefGoogle Scholar
Munster T, Pahnke J, Di Rosa A, Kim JT, Martin W, Saedler H, Theiben G (1997) Floral homeotic genes were recruited from homologous MADS-box genes preexisting in the common ancestor of ferns and seed plants. Proc Natl Acad Sci USA18: 2415–2420CrossRefGoogle Scholar
Pearson LC (1995) The diversity and evolution of plants. CRC Press, Inc, Boca Raton, pp 40–41Google Scholar
Pellegrini L, Tan S, Richmond TJ (1995) Structure of serum response factor core bound to DNA. Nature376: 490–498PubMedCrossRefGoogle Scholar
Rounsley SD, Ditta GS, Yanofsky MF (1995) Diverse roles for MADS box genes inArabidopsis development. Plant Cell7: 1259–1269PubMedCrossRefGoogle Scholar
Sheldon CC, Burn JE, Perez PP, Metzger J, Edwards JA, Peacock WJ, Dennis ES (1999) TheFLF MADS Box Gene. A repressor of flowering inArabidopsis regulated by vernalization and methylation. Plant Cell11: 445–458PubMedCrossRefGoogle Scholar
Tandre K, Svenson M, Svensson ME, Engstrom P (1998) Conservation of gene structure and activity in the regulation of reproductive organ development of conifers and angiosperms. Plant J15: 615–623PubMedCrossRefGoogle Scholar
Theiben G, Kim JT, Saedler H (1996) Classification and phylogeny of the MADS-box multigene family suggest defined roles of MADS-box gene subfamilies in the morphological evolution of eukaryotes. J Mol Evol43: 484–516CrossRefGoogle Scholar
Zhang H, Forde BG (1998) AnArabidopsis MADS box gene that controls nutrient-induced changes in root architecture. Science279: 407–409PubMedCrossRefGoogle Scholar