論文

査読有り
2011年7月

The Large-flowered Petunia (Petunia hybrida Vilm.) Genotype Promotes Expressions of Type-A Response Regulator and Cytokinin Receptor Genes like Cytokinin Response

JOURNAL OF THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE
  • Takaaki Nishijima
  • ,
  • Tomoya Niki
  • ,
  • Tomoko Niki

80
3
開始ページ
343
終了ページ
350
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.2503/jjshs1.80.343
出版者・発行元
JAPAN SOC HORTICULTURAL SCI

Expressions of the genes involved in the cytokinin (CK) phosphorelay signaling circuitry in petunia (Petunia hybrida Vilm.) were investigated with regard to the large-flowered trait induced by the semidominant Grandiflora (G) gene. We isolated three cDNAs encoding type-A response regulators (RRs, PhRR1-3) and one cDNA encoding CK receptor histidine protein kinase (PhHK). Expression levels of PhRR1-3 and PhHK in the developing corolla were markedly higher in large-flowered cultivars with the Gg genotype than in small- and medium-flowered cultivars with the gg genotype. Higher expression levels of PhRR1-3 and PhHK in the Gg than in the gg genotypes was also consistent in BC4 plants in which the genetic background except for G allele was mostly uniform. These results suggest that Gg genotype induces a high expression level of PhRR1-3 and PhHK. These changes in expression caused by the G allele were the same as those caused by the CK response. Since type-A RRs repress CK signaling, the G-allele-induced high expression levels of PhRR1-3 presumably have partial inhibitory effects on G-allele-induced corolla enlargement.

Web of Science ® 被引用回数 : 5

リンク情報
DOI
https://doi.org/10.2503/jjshs1.80.343
CiNii Articles
http://ci.nii.ac.jp/naid/40018904638
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000293113100012&DestApp=WOS_CPL