Lateral root initiation and formation within the parental root meristem of Cucurbita pepo: is auxin a key player?

ABSTRACT: Background and Aims:In some plant families, including Cucurbitaceae, initiation and development of lateral roots (LRs) occur in the parental root apical meristem. The objective of this study was to identify the general mechanisms underlying LR initiation (LRI). Therefore, the first cellular events leading to LRI as well as the role of auxin in this process were studied in the Cucurbita pepo root apical meristem. Methods:Transgenic hairy roots harbouring the auxin-responsive promoter DR5 fused to different reporter genes were used for visualizing of cellular auxin response maxima (ARMs) via confocal laser scanning microscopy and 3-D imaging. The effects of exogenous auxin and auxin transport inhibitors on root branching were analysed. Key Results:The earliest LRI event involved a group of s

SUBMITTER: Ilina EL 

PROVIDER: S-EPMC6215038 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature