Developmental Biology and Induction of Phi Thickenings by Abiotic Stress in Roots of the Brassicaceae.

ABSTRACT: Phi thickenings are specialized bands of secondary wall deposited around radial walls of root cortical cells. These structures have been reported in various species from the Brassicaceae, including Brassica oleracea, where previous reports using hydroponics indicated that they can be induced by exposure to salt. Using roots grown on agar plates, we show that both salt and sucrose can induce the formation of phi thickenings in a diverse range of species within the Brassicaceae. Within the genus Brassica, both B. oleracea and B. napus demonstrated the formation of phi thickenings, but in a strongly cultivar-specific manner. Confocal microscopy of phi thickenings showed that they form a complex network of reinforcement surrounding the inner root cortex, and that a

SUBMITTER: Aleamotu'a M 

PROVIDER: S-EPMC6027303 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature