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.

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).

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.

France, Hungary, Physiological aspects, Plant genetics, Cytochemistry, Nitrogen, Nitrogen fixation, Plant cell development, Nitrogen-fixing microorganisms, Plant cell differentiation

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