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

  title={PRH1 mediates ARF7-LBD dependent auxin signaling to regulate lateral root development in Arabidopsis thaliana},
  author={F. Zhang and Wenqing Tao and R. Sun and Junxia Wang and Cuiling Li and X. Kong and Huiyu Tian and Zhaojun Ding},
  journal={PLoS Genetics},
The 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, LBD18 and LBD29). 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… Expand
6 Citations
Antagonistic Interaction between Auxin and SA Signaling Pathways Regulates Bacterial Infection through Lateral Root in Arabidopsis.
It is shown that ARF7-mediated auxin signaling antagonizes with SA signaling to control bacterial infection through the regulation of LR development, and salicylic acid represses LR formation in Pto DC3000-induced LR development. Expand
MPK14-mediated auxin signaling controls lateral root development via ERF13 regulated very-long-chain fatty acids (VLCFAs) biosynthesis.
It is shown that auxin-induced degradation of the APETALA2/Ethylene Responsive Factor (AP2/ERF) transcription factor ERF13, dependent on MITOGEN-ACTIVATED PROTEIN KINASE MPK14-mediated phosphorylation, plays an essential role in LR development. Expand
Transcription factor LkWOX4 is involved in adventitious root development in Larix kaempferi.
Cloning the WOX4 from the AR of Larix kaempferi found LkWOX4 involves in the AR initiation and development, which might be regulated through the IAA, JA and ABA signaling pathways. Expand
Molecular and in silico characterization of tomato LBD transcription factors reveals their role in fruit development and stress responses
  • Kapil Gupta, Shubhra Gupta
  • Biology
  • 2021
The combinatorial interaction between SlLBDs and other TFs is responsible to play role in regulating diverse functions in tomato, suggesting their role in defense and hormonal regulation. Expand
CRISPR/Cas9 targeted mutagenesis of SlLBD40, a lateral organ boundaries domain transcription factor, enhances drought tolerance in tomato.
It is demonstrated that SlLBD40, involved in JA signaling, was a negative regulator of drought tolerance and that knockout of SlL BD40 enhanced drought tolerance in tomato. Expand
How Plant Hormones Mediate Salt Stress Responses.
This review discusses and summarize how plant hormones mediate salinity signals to regulate plant growth adaptation and highlights how, in response to salt stress, plants build a defense system by orchestrating the synthesis, signaling, and metabolism of various hormones via multiple crosstalks. Expand


LBD18 acts as a transcriptional activator that directly binds to the EXPANSIN14 promoter in promoting lateral root emergence of Arabidopsis.
It is shown that auxin-responsive LBD18/ASL20 acts as a specific DNA-binding transcriptional activator that directly regulates EXPANSIN14 (EXP14), a gene encoding a cell wall-loosening factor that promotes lateral root emergence in Arabidopsis thaliana. Expand
Direct activation of EXPANSIN14 by LBD18 in the gene regulatory network of lateral root formation in Arabidopsis
The molecular function of LBD 18 and its gene regulatory network during lateral root formation is presented and it is demonstrated that LBD18 activates expression of EXP14, a gene encoding the cell-wall loosening factor, by directly binding to the EXP14 promoter to promote lateral root emergence. Expand
Lateral Organ Boundaries Domain16 and 18 Act Downstream of the AUXIN1 and LIKE-AUXIN3 Auxin Influx Carriers to Control Lateral Root Development in Arabidopsis1
Genetic and gene expression analyses indicated that LBD16 and LBD18 act with AUX1 to regulate LR initiation and LR primordium development, and thatAUX1 and LAX3 are needed for auxin-responsive expression of LBD 16 and Lbd18. Expand
Lateral root emergence in Arabidopsis is dependent on transcription factor LBD29 regulation of auxin influx carrier LAX3
The transcription factor LBD29 regulates induction of the auxin transporter LAX3 during lateral root emergence in order to fine-tune its temporal expression pattern and cell separation. Expand
Bimodular auxin response controls organogenesis in Arabidopsis
The genetic framework in which two successive auxin response modules control early steps of a developmental process adds an extra dimension to the complexity of auxin’s action. Expand
Auxin-dependent regulation of lateral root positioning in the basal meristem of Arabidopsis
Evidence is found that the priming of pericycle cells for lateral root initiation might take place in the basal meristem, correlating with elevated auxin sensitivity in this part of the root, and auxin responsiveness oscillates with peaks of expression at regular intervals of 15 hours. Expand
EXPANSINA17 up-regulated by LBD18/ASL20 promotes lateral root formation during the auxin response.
Results support the notion that LBD18 up-regulates a subset of EXP genes to enhance cell separation to promote LR emergence in Arabidopsis. Expand
ARF7 and ARF19 Regulate Lateral Root Formation via Direct Activation of LBD/ASL Genes in Arabidopsis[W]
The results reveal that ARFs regulate lateral root formation via direct activation of LBD/ASLs in Arabidopsis through directly regulating the auxin-mediated transcription of LATERAL ORGAN BOUNDARIES-DOMAIN16/ASYMMETRIC LEAVES2-LIKE18 and/or LBD29/ ASL16 in roots. Expand
GIP1 may act as a coactivator that enhances transcriptional activity of LBD18 in Arabidopsis.
Reverse-transcription-polymerase chain reaction analysis showed overlapping expression of GIP1 and LBD18 in various tissues of Arabidopsis such as roots, aerial parts, and rosette leaves, indicating that GIP 1 may act as a transcriptional coactivator of LBD 18. Expand
Local Transcriptional Control of YUCCA Regulates Auxin Promoted Root-Growth Inhibition in Response to Aluminium Stress in Arabidopsis
YUCCA (YUC), which encodes flavin monooxygenase-like proteins, regulates local auxin biosynthesis in the root apex transition zone (TZ) in response to Al stress, and it is demonstrated that PHYTOCHROME INTERACTING FACTOR4 (PIF4) functions as a transcriptional activator for YUC5/8/9. Expand