AUX1 acts upstream of PIN2 in regulating root gravitropism
Journal Article
·
· Biochemical and Biophysical Research Communications
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University, Tianjin, 300071 (China)
Highlights: • AUX1 acts upstream of PIN2 in the control of root gravitropism by regulating the asymmetric auxin distribution. AUX1 and PIN2 auxin transporter are required for the asymmetric distribution of auxin for root gravitropic response. However, the relationship between AUX1 and PIN2 in root gravitropism is unclear. Here, we report that aux1-T mutant show stronger defects in root gravitropism than pin2-T, and aux1-T pin2-T double mutants display similar agravitropic phenotype to aux1-T. The gravity-induced asymmetric distribution of auxin responses could not be established in pin2-T, aux1-T and aux1-T pin2-T mutants; whereas aux1-T pin2-T double mutants showed similar auxin responses to aux1-T mutant. These findings support AUX1 plays a role in root gravitropism upstream of PIN2.
- OSTI ID:
- 23134174
- Journal Information:
- Biochemical and Biophysical Research Communications, Journal Name: Biochemical and Biophysical Research Communications Journal Issue: 1-4 Vol. 507; ISSN BBRCA9; ISSN 0006-291X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Gravitropism of Arabidopsis thaliana Roots Requires the Polarization of PIN2 toward the Root Tip in Meristematic Cortical Cells
Journal Article
·
Thu Jun 17 20:00:00 EDT 2010
· The Plant Cell
·
OSTI ID:2483298