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

Masashi Naruse, Honami Takahashi, Nori Kurata, Yukihiro Ito

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)267-272
Number of pages6
JournalPlant Biotechnology
Issue number3
Publication statusPublished - 2018


  • Cytokinin
  • KNOX gene
  • Rice
  • Shoot regeneration


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