MtHAP2-1 is a key transcriptional regulator of symbiotic nodule development regulated by microRNA169 in Medicago truncatula

Article Abstract:

A new transcription factor of the CCAAT-binding family, MtHAP2-1, is identified in the model legume Medicago truncatula, for which RNA interference (RNAi) and in situ hybridization experiments have indicated a key role during nodule development. The complementary expression pattern of miR169 and MtHAP2-1 and the phenotype of miR-resistant MtHAP2-1 nodules have suggested that the miR169-mediated restriction of MtHAP2-1 expression to the nodule meristematic zone is necessary for the differentiation of nodule cells.

Author: Crespi, Martin, Combier, Jean-Philippe, Frugier, Florian, De Billy, Francoise, Boualem, Adnane, El-Yahyaoui, Fikri, Moreau, Sandra, Vernie, Tatiana, Ott, Thomas, Gamas, Pascal, Niebel, Andreas
All Other Miscellaneous Crop Farming, Field crops, except cash grains, not elsewhere classified, Alfalfa, Symbiosis, RNA interference, Report

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The myocardin family of transcriptional coactivators: Versatile regulators of cell growth, migration, and myogenesis

Article Abstract:

The functions and mechanism of action of the myocardin family of coactivators and the physiological significance of transcriptional coactivation in the context of signal-dependent and cell-type-specific gene regulation are reviewed. Members of the myocardin family of coactivators activate genes involved in cell proliferation, migration, and myogenesis by associating with serum response factor (SRF).

Author: &Pipes, G.C. Teg, &Creemers, Esther E., &Olson, Eric N.
Genetic regulation, Smooth muscle

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A Kruppel-like zinc finger protein is involved in nitrogen-fixing root nodule organogenesis

Article Abstract:

Mechanisms that regulate plant host differentiation of the nitrogen-fixing root nodules are little known. Antisense Mszpt 2-1 plants were affected in formation of the central nitrogen-fixing region of the root nodule, and it has been found that a Kruppel-like zinc finger protein is a factor in nitrogen-fixing root nodule organogenesis.

Author: Florian, Frugier, Poirier, Simone, Satiat-Jeunemaitre, Beatrice, Kondorosi, Adam, Crespi, Martin
France, Hungary, Physiological aspects, Plant genetics, Cytochemistry, Nitrogen, Nitrogen fixation, Plant cell development, Nitrogen-fixing microorganisms, Plant cell differentiation

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Subjects list: Research, Genetic aspects, DNA binding proteins, Alfalfa, Structure, Chemical properties
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