Identification of Candidate Adaxial-Abaxial-Related Genes Regulating Petal Expansion During Flower Opening in Rosa chinensis "Old Blush".

ABSTRACT: Petal expansion is the main process by which flower opening occurs in roses (Rosa chinensis). Although the regulation of leaf expansion has been extensively studied, little is known about the mechanisms controlling petal expansion. The regulation of leaf dorsoventral (adaxial-abaxial) polarity is important for blade expansion and morphogenesis, but the mechanisms involved adaxial-abaxial regulation in petals are unknown. We found that auxin, a key hormonal regulator of leaf adaxial-abaxial patterning, is unevenly distributed in rose petals. The transcriptomes of the adaxial and abaxial petal tissues were sequenced at three developmental stages during flower opening. Genes that were differentially expressed between the two tissues were filtered for those known to be involved in petal

SUBMITTER: Han Y 

PROVIDER: S-EPMC6747050 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature