Skip to main content

Research Repository

Advanced Search

Regulation of Root Angle and Gravitropism

Toal, Ted W.; Ron, Mily; Gibson, Donald; Kajala, Kaisa; Splitt, Bessie; Johnson, Logan S.; Miller, Nathan D.; Slovak, Radka; Gaudinier, Allison; Patel, Rohan; de Lucas, Miguel; Provart, Nicholas J.; Spalding, Edgar P.; Busch, Wolfgang; Kliebenstein, Daniel J.; Brady, Siobhan M.

Authors

Ted W. Toal

Mily Ron

Donald Gibson

Kaisa Kajala

Bessie Splitt

Logan S. Johnson

Nathan D. Miller

Radka Slovak

Allison Gaudinier

Rohan Patel

Nicholas J. Provart

Edgar P. Spalding

Wolfgang Busch

Daniel J. Kliebenstein

Siobhan M. Brady



Abstract

Regulation of plant root angle is critical for obtaining nutrients and water and is an important trait for plant breeding. A plant's final, long-term root angle is the net result of a complex series of decisions made by a root tip in response to changes in nutrient availability, impediments, the gravity vector and other stimuli. When a root tip is displaced from the gravity vector, the short-term process of gravitropism results in rapid reorientation of the root toward the vertical. Here, we explore both short- and long-term regulation of root growth angle, using natural variation in tomato to identify shared and separate genetic features of the two responses. Mapping of expression quantitative trait loci mapping and leveraging natural variation between and within species including Arabidopsis suggest a role for PURPLE ACID PHOSPHATASE 27 and CELL DIVISION CYCLE 73 in determining root angle.

Citation

Toal, T. W., Ron, M., Gibson, D., Kajala, K., Splitt, B., Johnson, L. S., …Brady, S. M. (2018). Regulation of Root Angle and Gravitropism. G3: Genes | Genomes | Genetics, https://doi.org/10.1534/g3.118.200540

Journal Article Type Article
Acceptance Date Oct 2, 2018
Online Publication Date Oct 15, 2018
Publication Date Oct 15, 2018
Deposit Date Oct 17, 2018
Publicly Available Date Mar 29, 2024
Journal G3: Genes | Genomes | Genetics
Publisher Genetics Society of America
Peer Reviewed Peer Reviewed
DOI https://doi.org/10.1534/g3.118.200540
Related Public URLs http://www.g3journal.org/content/ggg/early/2018/10/15/g3.118.200540.full.pdf