scholarly journals Lateral Organ Boundaries Domain16 and 18 Act Downstream of the AUXIN1 and LIKE-AUXIN3 Auxin Influx Carriers to Control Lateral Root Development in Arabidopsis

2015 ◽  
Vol 168 (4) ◽  
pp. 1792-1806 ◽  
Author(s):  
Han Woo Lee ◽  
Chuloh Cho ◽  
Jungmook Kim
Keyword(s):  
Root Development ◽  
Lateral Root ◽  
Lateral Root Development ◽  
Lateral Organ ◽  
Organ Boundaries

A shared gene drives lateral root development and root nodule symbiosis pathways in Lotus

Science ◽  
2019 ◽  
Vol 366 (6468) ◽  
pp. 1021-1023 ◽  
Author(s):  
Takashi Soyano ◽  
Yoshikazu Shimoda ◽  
Masayoshi Kawaguchi ◽  
Makoto Hayashi
Keyword(s):  
Root Development ◽  
Lateral Root ◽  
Root Nodule ◽  
Root Nodules ◽  
Lotus Japonicus ◽  
Cortical Cell ◽  
Cortical Cells ◽  
Lateral Root Development ◽  
Lateral Organ ◽  
Nodule Symbiosis

Legumes develop root nodules in symbiosis with nitrogen-fixing rhizobial bacteria. Rhizobia evoke cell division of differentiated cortical cells into root nodule primordia for accommodating bacterial symbionts. In this study, we show that NODULE INCEPTION (NIN), a transcription factor in Lotus japonicus that is essential for initiating cortical cell divisions during nodulation, regulates the gene ASYMMETRIC LEAVES 2-LIKE18/LATERAL ORGAN BOUNDARIES DOMAIN16a (ASL18/LBD16a). Orthologs of ASL18/LBD16a in nonlegume plants are required for lateral root development. Coexpression of ASL18a and the CCAAT box–binding protein Nuclear Factor-Y (NF-Y) subunits, which are also directly targeted by NIN, partially suppressed the nodulation-defective phenotype of L. japonicusdaphne mutants, in which cortical expression of NIN was attenuated. Our results demonstrate that ASL18a and NF-Y together regulate nodule organogenesis. Thus, a lateral root developmental pathway is incorporated downstream of NIN to drive nodule symbiosis.

scholarly journals PRH1 mediates ARF7-LBD dependent auxin signaling to regulate lateral root development in Arabidopsis thaliana

2019 ◽  
Author(s):  
Feng Zhang ◽  
Wenqing Tao ◽  
Ruiqi Sun ◽  
Junxia Wang ◽  
Cuiling Li ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factors ◽  
Root Development ◽  
Lateral Root ◽  
Lateral Roots ◽  
Auxin Signaling ◽  
Auxin Response ◽  
Cell Identity ◽  
Lateral Root Development ◽  
Lateral Organ

AbstractThe development of lateral roots in Arabidopsis thaliana is strongly dependent on signaling directed by the AUXIN RESPONSE FACTOR7 (ARF7), which in turn activates LATERAL ORGAN BOUNDARIES DOMAIN (LBD) transcription factors (LBD16, 18, 29 and 33). Here, the product of PRH1, a PR-1 homolog annotated previously as encoding a pathogen-responsive protein, was identified as a target of ARF7-mediated auxin signaling and also as participating in the development of lateral roots. PRH1 was shown to be strongly induced by auxin treatment, and plants lacking a functional copy of PRH1 formed fewer lateral roots. The transcription of PRH1 was controlled by the binding of both ARF7 and LBDs to its promoter region. An interaction was detected between PRH1 and GATA23, a protein which regulates cell identity in lateral root founder cells.Author SummaryIn Arabidopsis thaliana AUXIN RESPONSE FACTOR7 (ARF7)-mediated auxin signaling plays a key role in lateral roots (LRs) development. The LATERAL ORGAN BOUNDARIES DOMAIN (LBD) transcription factors (LBD16, 18, 29 and 33) act downstream of ARF7-mediated auxin signaling to control LRs formation. Here, the PR-1 homolog PRH1 was identified as a novel target of both ARF7 and LBDs (especially the LBD29) during auxin induced LRs formation, as both ARF7 and LBDs were able to bind to the PRH1 promoter. More interestingly, PRH1 has a physical interaction with GATA23, which has been also reported to be up-regulated by auxin and influences LR formation through its regulation of LR founder cell identity. Whether the interaction between GATA23 and PRH1 affects the stability and/or the activity of either (or both) of these proteins remains an issue to be explored. This study provides improves new insights about how auxin regulates lateral root development.

Lateral root formation and nutrients: nitrogen in the spotlight

2021 ◽  
Author(s):  
Pierre-Mathieu Pélissier ◽  
Hans Motte ◽  
Tom Beeckman
Keyword(s):  
Signaling Pathways ◽  
Root System ◽  
Root Development ◽  
Lateral Root ◽  
Molecular Mechanisms ◽  
Root Formation ◽  
Lateral Roots ◽  
Nutrient Use Efficiency ◽  
Lateral Root Formation ◽  
Lateral Root Development

Abstract Lateral roots are important to forage for nutrients due to their ability to increase the uptake area of a root system. Hence, it comes as no surprise that lateral root formation is affected by nutrients or nutrient starvation, and as such contributes to the root system plasticity. Understanding the molecular mechanisms regulating root adaptation dynamics towards nutrient availability is useful to optimize plant nutrient use efficiency. There is at present a profound, though still evolving, knowledge on lateral root pathways. Here, we aimed to review the intersection with nutrient signaling pathways to give an update on the regulation of lateral root development by nutrients, with a particular focus on nitrogen. Remarkably, it is for most nutrients not clear how lateral root formation is controlled. Only for nitrogen, one of the most dominant nutrients in the control of lateral root formation, the crosstalk with multiple key signals determining lateral root development is clearly shown. In this update, we first present a general overview of the current knowledge of how nutrients affect lateral root formation, followed by a deeper discussion on how nitrogen signaling pathways act on different lateral root-mediating mechanisms for which multiple recent studies yield insights.

scholarly journals Brassinosteroids Interact with Auxin to Promote Lateral Root Development in Arabidopsis

2004 ◽  
Vol 134 (4) ◽  
pp. 1624-1631 ◽  
Author(s):  
Fang Bao ◽  
Junjiang Shen ◽  
Shari R. Brady ◽  
Gloria K. Muday ◽  
Tadao Asami ◽  
...  
Keyword(s):  
Root Development ◽  
Lateral Root ◽  
Lateral Root Development

scholarly journals Peroxisomal CuAOζ and its product H2O2 regulate the distribution of auxin and IBA-dependent lateral root development in Arabidopsis

2017 ◽  
Vol 68 (17) ◽  
pp. 4851-4867 ◽  
Author(s):  
Yana Qu ◽  
Qing Wang ◽  
Jinhe Guo ◽  
Peipei Wang ◽  
Ping Song ◽  
...  
Keyword(s):  
Root Development ◽  
Lateral Root ◽  
Lateral Root Development
Sign in / Sign up

Export Citation Format

Share Document