The AFL Subfamily of B3 Transcription Factors: Evolution and Function in Angiosperm Seeds

Carbonero Zalduegui, Pilar and Iglesias Fernandez, Raquel and Vicente Carbajosa, Jesus (2017). The AFL Subfamily of B3 Transcription Factors: Evolution and Function in Angiosperm Seeds. "Journal of Experimental Botany", v. 68 (n. 4); pp. 871-880. ISSN 0022-0957. https://doi.org/10.1093/jxb/erw458.

Description

Title: The AFL Subfamily of B3 Transcription Factors: Evolution and Function in Angiosperm Seeds
Author/s:
  • Carbonero Zalduegui, Pilar
  • Iglesias Fernandez, Raquel
  • Vicente Carbajosa, Jesus
Item Type: Article
Título de Revista/Publicación: Journal of Experimental Botany
Date: February 2017
ISSN: 0022-0957
Volume: 68
Subjects:
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Biotecnología - Biología Vegetal
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Seed development follows zygotic embryogenesis; during the maturation phase reserves accumulate and desiccation tolerance is acquired. This is tightly regulated at the transcriptional level and the AFL (ABI3/FUS3/LEC2) subfamily of B3 transcription factors (TFs) play a central role. They alter hormone biosynthesis, mainly in regards to abscisic acid and gibberellins, and also regulate the expression of other TFs and/or modulate their downstream activity via protein-protein interactions. This review deals with the origin of AFL TFs, which can be traced back to non-vascular plants such as Physcomitrella patens and achieves foremost expansion in the angiosperms. In green algae, like the unicellular Chlamydomonas reinhardtii or the pluricellular Klebsormidium flaccidum, a single B3 gene and four B3 paralogous genes are annotated, respectively. However, none of them present with the structural features of the AFL subfamily, with the exception of the B3 DNA-binding domain. Phylogenetic analysis groups the AFL TFs into four Major Clusters of Ortologous Genes (MCOGs). The origin and function of these genes is discussed in view of their expression patterns and in the context of major regulatory interactions in seeds of monocotyledonous and dicotyledonous species.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBFU2013-49665-EXPUnspecifiedUniversidad Politécnica de MadridAumento en la captura de energía y carbono en sistemas vegetales
Government of SpainBIO2014-53181-RUnspecifiedUniversidad Politécnica de MadridEstrés del retículo endoplásmico en plantas: respuestas y efectos
Government of SpainBFU2009-11809UnspecifiedUnspecifiedUnspecified

More information

Item ID: 53679
DC Identifier: http://oa.upm.es/53679/
OAI Identifier: oai:oa.upm.es:53679
DOI: 10.1093/jxb/erw458
Official URL: https://academic.oup.com/jxb/article/68/4/871/2731730
Deposited by: Biblioteca ETSI Agrónomos
Deposited on: 21 Jan 2019 10:05
Last Modified: 21 Jan 2019 10:05
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