Can I read KSN heterozygosity is associated with continuous flowering of Rosa rugosa Purple branch on EtoBox?

KSN heterozygosity is associated with continuous flowering of Rosa rugosa Purple branch by Mengjuan Bai; Jinyi Liu; Chunguo Fan; Yeqing Chen; Hui Chen; Jun Lu; Jingjing Sun; Guogui Ning; Changquan Wang is a Agricultural and Biological Sciences article available to read on EtoBox.

What is KSN heterozygosity is associated with continuous flowering of Rosa rugosa Purple branch about?

## Abstract Rose (Rosaspp.) plants flower via two contrasting methods: once flowering (OF) and continuous flowering (CF). Purple branch is a rare continuously flowering variety ofRosa rugosathat is extensively cultivated in China. However, the genetic basis of its CF behavior is unknown. We demonstrated that Purple branch is heterozygous for theTFL1homologKSN. OneKSNallele with a 9 kb Copia insertion was found to be identical to that from continuously floweringRosa chinensisOld blush. The other allele was found to be a functional wild-type allele. The overall expression ofKSNwas closely linked to the floral transition, and it was significantly repressed in continuously flowering Purple branch compared with OF Plena. The promoter region of the normalKSNallele was hypermethylated, and histone methylation at H3H4, H3K9, and H3K27 of theKSNgene locus was modified in continuously flowering Purple branch. Silencing of the DNA methyltransferase genesMET1andCMT3and the histone methyltransferase geneSUVR5in Purple branch led to enhancedKSNexpression, but silencing of the histone demethylase geneJMJ12suppressedKSNexpression. Therefore, the CF habit of Purple branch may be due to reduced expr

Who reads KSN heterozygosity is associated with continuous flowering of Rosa rugosa Purple branch?

Author

Mengjuan Bai; Jinyi Liu; Chunguo Fan; Yeqing Chen; Hui Chen; Jun Lu; Jingjing Sun; Guogui Ning; Changquan Wang

Publisher

Oxford University Press (OUP)

Published

2021

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)