MADS-box genes underground becoming mainstream: plant root developmental mechanisms
Autor: | Alma Piñeyro-Nelson, Berenice García-Ponce, Mónica L García-Gómez, María de la Paz Sánchez, Carlos Espinosa-Soto, Elena R. Alvarez-Buylla, Adriana Garay-Arroyo |
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Rok vydání: | 2018 |
Předmět: |
0106 biological sciences
0301 basic medicine animal structures Physiology Gene regulatory network MADS Domain Proteins Plant Science Genes Plant 01 natural sciences Plant Roots Epigenesis Genetic 03 medical and health sciences Gene Expression Regulation Plant Arabidopsis Gene expression Epigenetics Transcription factor Gene MADS-box Phylogeny Epigenesis biology biology.organism_classification 030104 developmental biology Evolutionary biology 010606 plant biology & botany |
Zdroj: | The New phytologist. 223(3) |
ISSN: | 1469-8137 |
Popis: | Plant growth is largely post-embryonic and depends on meristems that are active throughout the lifespan of an individual. Developmental patterns rely on the coordinated spatio-temporal expression of different genes, and the activity of transcription factors is particularly important during most morphogenetic processes. MADS-box genes constitute a transcription factor family in eukaryotes. In Arabidopsis, their proteins participate in all major aspects of shoot development, but their role in root development is still not well characterized. In this review we synthetize current knowledge pertaining to the function of MADS-box genes highly expressed in roots: XAL1, XAL2, ANR1 and AGL21, as well as available data for other MADS-box genes expressed in this organ. The role of Trithorax group and Polycomb group complexes on MADS-box genes' epigenetic regulation is also discussed. We argue that understanding the role of MADS-box genes in root development of species with contrasting architectures is still a challenge. Finally, we propose that MADS-box genes are key components of the gene regulatory networks that underlie various gene expression patterns, each one associated with the distinct developmental fates observed in the root. In the case of XAL1 and XAL2, their role within these networks could be mediated by regulatory feedbacks with auxin. |
Databáze: | OpenAIRE |
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