Featured
-
-
Article
| Open Access
A root cap-localized NAC transcription factor controls root halotropic response to salt stress in Arabidopsis
This study reports that the SOMBRERO, a root cap-localized transcription factor, determines root halotropic response to salt stress via spatiotemporally modulating AUX1-depdenent auxin redistribution in the root tip.
- Lulu Zheng
- , Yongfeng Hu
- & Yi Han
-
Article
| Open Access
WAVY GROWTH Arabidopsis E3 ubiquitin ligases affect apical PIN sorting decisions
Directionality of auxin transport is determined by polar localization of PIN-FORMED (PIN) proteins. Here the authors show that Arabidopsis WAV3 E3 ubiquitin ligases contribute to PIN polarity by selectively antagonizing ectopic deposition of de novo synthesized PIN proteins following cell division.
- Nataliia Konstantinova
- , Lukas Hoermayer
- & Christian Luschnig
-
Article
| Open Access
Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants
Parasitic plants are able to grow towards potential hosts. Here the authors show that strigolactones produced by the host plants can act as chemoattractants for the root parasites Phtheirospermum japonicum and Striga hermonthica.
- Satoshi Ogawa
- , Songkui Cui
- & Ken Shirasu
-
Article
| Open Access
Regulation of plant phototropic growth by NPH3/RPT2-like substrate phosphorylation and 14-3-3 binding
The plasma membrane-localized NPH3 protein is required for phototropic growth in Arabidopsis. Here the authors show that phototropin 1 phosphorylates NPH3 at a conserved C-terminal sequence motif triggering binding of 14-3-3 proteins to NPH3 that is necessary for the phototropic response.
- Stuart Sullivan
- , Thomas Waksman
- & John M. Christie
-
Article
| Open Access
A minus-end directed kinesin motor directs gravitropism in Physcomitrella patens
Gravitropism is the process by which plants perceive and respond to gravity. Here the authors identify a minus-end-directed kinesin required for gravity-triggered actin filament rearrangement and negative gravitropic response in the moss Physcomitrella patens, thus linking a microtubule-based cellular motor to gravitropism via actin.
- Yufan Li
- , Zhaoguo Deng
- & Haodong Chen
-
Article
| Open Access
Brassinosteroid signaling delimits root gravitropism via sorting of the Arabidopsis PIN2 auxin transporter
Brassinosteroid signaling can regulate auxin transport by influencing the sorting and accumulation of PIN auxin efflux carriers. Here, the authors show that in roots, brassinolide can modulate vacuolar degradation and endocytic sorting of PIN2, delimiting root curvature in response to gravity.
- Katarzyna Retzer
- , Maria Akhmanova
- & Christian Luschnig
Defects in the cell wall and its deposition caused by loss-of-function of three RLKs alter root hydrotropism in Arabidopsis thaliana