Cytokinin-induced expression of <i>OSH1</i> in a shoot-regenerating rice callus

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  • Cytokinin-induced expression of OSH1 in a shoot-regenerating rice callus

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Abstract

<p>The expression of a KNOX class 1 gene OSH1 is induced by cytokinin during regeneration of shoots from callus in Oryza sativa L. (rice). This cytokinin-induced expression was enhanced by overexpression of homologues of cytokinin-signalling phosphorelay genes such as a histidine kinase gene OHK3, a phosphotransmitter gene OHP2 and a response regulator gene ORR1 in cultured cells. Regionally overlapped expression of these genes and OSH1 was observed in shoot apex. These results suggest that these cytokinin-signalling genes are positive regulators of the expression of OSH1, and mediate the OSH expression upon shoot regeneration from callus in rice.</p>

Journal

  • Plant Biotechnology

    Plant Biotechnology 35 (3), 267-272, 2018-09-25

    Japanese Society for Plant Biotechnology

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