scholarly journals Arabidopsis thaliana AtUTr7 Encodes a Golgi-Localized UDP–Glucose/UDP–Galactose Transporter that Affects Lateral Root Emergence

2012 ◽  
Vol 5 (6) ◽  
pp. 1263-1280 ◽  
Author(s):  
Michael Handford ◽  
Cecilia Rodríguez-Furlán ◽  
Lorena Marchant ◽  
Marcelo Segura ◽  
Daniela Gómez ◽  
...  
Author(s):  
Qing-ping Zhao ◽  
Jing Wang ◽  
Hong-ru Yan ◽  
Meng-ya Yang ◽  
Jin Wang ◽  
...  

Development ◽  
1999 ◽  
Vol 126 (4) ◽  
pp. 711-721 ◽  
Author(s):  
Q. Tian ◽  
J.W. Reed

The plant hormone auxin controls many aspects of development and acts in part by inducing expression of various genes. Arabidopsis thaliana semidominant shy2 (short hypocotyl) mutations cause leaf formation in dark-grown plants, suggesting that SHY2 has an important role in regulating development. Here we show that the SHY2 gene encodes IAA3, a previously known member of the Aux/IAA family of auxin-induced genes. Dominant shy2 mutations cause amino acid changes in domain II, conserved among all members of this family. We isolated loss-of-function shy2 alleles including a putative null mutation. Gain-of-function and loss-of-function shy2 mutations affect auxin-dependent root growth, lateral root formation, and timing of gravitropism, indicating that SHY2/IAA3 regulates multiple auxin responses in roots. The phenotypes suggest that SHY2/IAA3 may activate some auxin responses and repress others. Models invoking tissue-specificity, feedback regulation, or control of auxin transport may explain these results.


2014 ◽  
Vol 65 (8) ◽  
pp. 2219-2230 ◽  
Author(s):  
Tábata Bergonci ◽  
Bianca Ribeiro ◽  
Paulo H.O. Ceciliato ◽  
Juan Carlos Guerrero-Abad ◽  
Marcio C. Silva-Filho ◽  
...  

2018 ◽  
Vol 41 ◽  
pp. 67-72 ◽  
Author(s):  
Dorothee Stoeckle ◽  
Martha Thellmann ◽  
Joop EM Vermeer

2020 ◽  
Vol 227 (4) ◽  
pp. 1157-1173 ◽  
Author(s):  
Qingqing Xun ◽  
Yunzhe Wu ◽  
Hui Li ◽  
Jinke Chang ◽  
Yang Ou ◽  
...  

2012 ◽  
Vol 368 (1-2) ◽  
pp. 591-602 ◽  
Author(s):  
Mauricio Nahuam Chávez-Avilés ◽  
Claudia Lizeth Andrade-Pérez ◽  
Homero Reyes de la Cruz

2015 ◽  
Vol 23 ◽  
pp. 31-38 ◽  
Author(s):  
Amaya Vilches-Barro ◽  
Alexis Maizel

Author(s):  
Mercedes Schroeder ◽  
Melissa Y. Gomez ◽  
Nathan K. McLain ◽  
Emma Gachomo

Beneficial rhizobacteria can stimulate changes in plant root development. While root system growth is mediated by multiple factors, the regulated distribution of the phytohormone auxin within root tissues plays a principal role. Auxin transport facilitators help to generate the auxin gradients and maxima that determine root structure. Here, we show that the plant growth-promoting rhizobacterial strain Bradyrhizobium japonicum IRAT FA3 influences specific auxin efflux transporters to alter Arabidopsis thaliana root morphology. Gene expression profiling of host transcripts in control and B. japonicum-inoculated roots of the wild type A. thaliana accession Col-0 confirmed upregulation of PIN2, PIN3, PIN7 and ABCB19 with B. japonicum and identified genes potentially contributing to a diverse array of auxin-related responses. Co-cultivation of the bacterium with loss-of-function auxin efflux transport mutants revealed that B. japonicum requires PIN3, PIN7 and ABCB19 to increase lateral root development and utilizes PIN2 to reduce primary root length. Accelerated lateral root primordia production due to B. japonicum was not observed in single pin3, pin7 or abcb19 mutants, suggesting independent roles for PIN3, PIN7 and ABCB19 during the plant-microbe interaction. Our work demonstrates B. japonicum’s influence over host transcriptional reprogramming during plant interaction with this beneficial microbe and the subsequent alterations to root system architecture.


Sign in / Sign up

Export Citation Format

Share Document