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Reproductive meristem fates in Gerbera.
J Exp Bot. 2006; 57(13):3445-55.JE

Abstract

Flowering plants go through several phases between regular stem growth and the actual production of flower parts. The stepwise conversion of vegetative into inflorescence and floral meristems is usually unidirectional, but under certain environmental or genetic conditions, meristems can revert to an earlier developmental identity. Vegetative meristems are typically indeterminate, producing organs continuously, whereas flower meristems are determinate, shutting down their growth after reproductive organs are initiated. Inflorescence meristems can show either pattern. Flower and inflorescence development have been investigated in Gerbera hybrida, an ornamental plant in the sunflower family, Asteraceae. Unlike the common model species used to study flower development, Gerbera inflorescences bear a fixed number of flowers, and the architecture of the flowers differ in that Gerbera ovaries are inferior (borne below the perianth). This architectural difference has been exploited to show that floral meristem determinacy and identity are spatially and genetically distinct in Gerbera, and we have shown that a single SEPALLATA-like MADS domain factor controls both flower and inflorescence meristem fate in the plant. Although these phenomena have not been directly observed in Arabidopsis, the integrative role of the SEPALLATA function in reproductive meristem development may be general for all flowering plants.

Authors+Show Affiliations

Gerbera Laboratory, Department of Applied Biology, PO Box 27, 00014 University of Helsinki, Finland. teemu.teeri@helsinki.fiNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

17023564

Citation

Teeri, Teemu H., et al. "Reproductive Meristem Fates in Gerbera." Journal of Experimental Botany, vol. 57, no. 13, 2006, pp. 3445-55.
Teeri TH, Uimari A, Kotilainen M, et al. Reproductive meristem fates in Gerbera. J Exp Bot. 2006;57(13):3445-55.
Teeri, T. H., Uimari, A., Kotilainen, M., Laitinen, R., Help, H., Elomaa, P., & Albert, V. A. (2006). Reproductive meristem fates in Gerbera. Journal of Experimental Botany, 57(13), 3445-55.
Teeri TH, et al. Reproductive Meristem Fates in Gerbera. J Exp Bot. 2006;57(13):3445-55. PubMed PMID: 17023564.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Reproductive meristem fates in Gerbera. AU - Teeri,Teemu H, AU - Uimari,Anne, AU - Kotilainen,Mika, AU - Laitinen,Roosa, AU - Help,Hanna, AU - Elomaa,Paula, AU - Albert,Victor A, Y1 - 2006/10/05/ PY - 2006/10/7/pubmed PY - 2007/3/21/medline PY - 2006/10/7/entrez SP - 3445 EP - 55 JF - Journal of experimental botany JO - J Exp Bot VL - 57 IS - 13 N2 - Flowering plants go through several phases between regular stem growth and the actual production of flower parts. The stepwise conversion of vegetative into inflorescence and floral meristems is usually unidirectional, but under certain environmental or genetic conditions, meristems can revert to an earlier developmental identity. Vegetative meristems are typically indeterminate, producing organs continuously, whereas flower meristems are determinate, shutting down their growth after reproductive organs are initiated. Inflorescence meristems can show either pattern. Flower and inflorescence development have been investigated in Gerbera hybrida, an ornamental plant in the sunflower family, Asteraceae. Unlike the common model species used to study flower development, Gerbera inflorescences bear a fixed number of flowers, and the architecture of the flowers differ in that Gerbera ovaries are inferior (borne below the perianth). This architectural difference has been exploited to show that floral meristem determinacy and identity are spatially and genetically distinct in Gerbera, and we have shown that a single SEPALLATA-like MADS domain factor controls both flower and inflorescence meristem fate in the plant. Although these phenomena have not been directly observed in Arabidopsis, the integrative role of the SEPALLATA function in reproductive meristem development may be general for all flowering plants. SN - 0022-0957 UR - https://www.unboundmedicine.com/medline/citation/17023564/Reproductive_meristem_fates_in_Gerbera_ L2 - https://academic.oup.com/jxb/article-lookup/doi/10.1093/jxb/erl181 DB - PRIME DP - Unbound Medicine ER -