Poplar woody taproot under bending stress: the asymmetric response of the convex and concave sides.

ABSTRACT: Background and Aims Progress has been made in understanding the physiological and molecular basis of root response to mechanical stress, especially in the model plant Arabidopsis thaliana, in which bending causes the initiation of lateral root primordia toward the convex side of the bent root. In the case of woody roots, it has been reported that mechanical stress induces an asymmetric distribution of lateral roots and reaction wood formation, but the mechanisms underlying these responses are largely unknown. In the present work, the hypothesis was tested that bending could determine an asymmetric response in the two sides of the main root axis as cells are stretched on the convex side and compressed on the concave side. Methods Woody taproots of 20 seedlings were bent to an angle of 90° u

SUBMITTER: De Zio E 

PROVIDER: S-EPMC5055640 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature