Root branching toward water involves posttranslational modification of transcription factor ARF7

Orosa, Beatriz; Leftley, Nicola; Wangenheim, Daniel von; Banda, Jason; Srivastava, Anjil Kumar; Hill, Kristine; Truskina, Jekaterina; Bhosale, Rahul; Morris, Emily; Srivastava, Moumita; Kümpers, Britta M. C.; Goh, Tatsuaki; Fukaki, Hidehiro; Vermeer, Joop E. M.; Vernoux, Teva; Dinneny, José R.; French, A. P.; Bishopp, Anthony; Sadanandom, Ari; Bennett, Malcolm

doi:10.1126/science.aau3956

Cited by 219 publications

(216 citation statements)

References 29 publications

Supporting

Mentioning

206

Contrasting

Unclassified

Order By: Relevance

“…In addition, SUMOylation of ARF7 plays a role in hydropatterning of lateral roots . Differences in water potential triggers modification of ARF7 with the small ubiquitin‐like modifier (SUMO) on the air side of roots.…”

Section: Post‐translational Regulation Of the Auxin Response Machinerymentioning

confidence: 99%

“…Accumulation of SUMOlyated ARF7 on this side of the root recruits the IAA3 repressor protein and blocks‐auxin responsive gene expression of genes involved in lateral root initiation. Non‐SUMOlyated ARF7 on the opposite side of the root is free to induce expression of ARF7 targets . Thus, multiple modifications of auxin signaling components (Table ) can modulate auxin responsiveness.…”

Section: Post‐translational Regulation Of the Auxin Response Machinerymentioning

confidence: 99%

“…In addition, SUMOylation of ARF7 plays a role in hydropatterning of lateral roots. 106 Differences in water potential triggers modification of ARF7 with the small ubiquitin-like modifier (SUMO) on the air side of roots. Accumulation of SUMOlyated ARF7 on this side of the root recruits the IAA3 repressor protein and blocksauxin responsive gene expression of genes involved in lateral root initiation.…”

Section: Post-translational Regulation Of the Auxin Response Machinerymentioning

confidence: 99%

“…Non-SUMOlyated ARF7 on the opposite side of the root is free to induce expression of ARF7 targets. 106 Thus, multiple modifications of auxin signaling components (Table 2) can modulate auxin responsiveness.…”

Section: Post-translational Regulation Of the Auxin Response Machinerymentioning

confidence: 99%

See 3 more Smart Citations

Regulation of auxin transcriptional responses

Powers

Strader

2019

Developmental Dynamics

View full text Add to dashboard Cite

The plant hormone auxin acts as a signaling molecule to regulate a vast number of developmental responses throughout all stages of plant growth. Tight control and coordination of auxin signaling is required for the generation of specific auxin‐response outputs. The nuclear auxin signaling pathway controls auxin‐responsive gene transcription through the TRANSPORT INHIBITOR RESPONSE1/AUXIN SIGNALING F‐BOX pathway. Recent work has uncovered important details into how regulation of auxin signaling components can generate unique and specific responses to determine auxin outputs. In this review, we discuss what is known about the core auxin signaling components and explore mechanisms important for regulating auxin response specificity.

show abstract

Section: Post‐translational Regulation Of the Auxin Response Machinerymentioning

confidence: 99%

Section: Post‐translational Regulation Of the Auxin Response Machinerymentioning

confidence: 99%

Section: Post-translational Regulation Of the Auxin Response Machinerymentioning

confidence: 99%

Section: Post-translational Regulation Of the Auxin Response Machinerymentioning

confidence: 99%

See 2 more Smart Citations

Regulation of auxin transcriptional responses

Powers

Strader

2019

Developmental Dynamics

View full text Add to dashboard Cite

show abstract

“…To date, genetic investigations of Aux/IAA genes have been hampered by the lack of obvious phenotype in the loss-of-function mutants (22). Nevertheless, recent careful characterization of a few of the mutants identified more precise functions in primary or LR development for IAA3 or IAA8 (23,24) or in the response to environmental stresses for IAA3, IAA5, IAA6 and IAA19 (25,26).…”

Section: Introductionmentioning

confidence: 99%

Molecular framework for TIR1/AFB-Aux/IAA-dependent auxin sensing controlling adventitious rooting in Arabidopsis

Lakehal

Chaabouni

Cavel

et al. 2019

Preprint

View full text Add to dashboard Cite

In Arabidopsis thaliana, canonical auxin-dependent gene regulation is mediated by 23 transcription factors from the AUXIN RESPONSE FACTOR (ARF) family, most of which interact with 29 auxin/indole acetic acid (Aux/IAA) repressors, themselves forming, in the presence of auxin, coreceptor complexes with one of six TRANSPORT INHIBITOR1/AUXIN-SIGNALLING F-BOX PROTEINS (TIR1/AFB). Different combinations of co-receptors drive specific sensing outputs, allowing auxin to control a myriad of processes. Considerable efforts have been made to discern the temporal and spatial specificity of auxin action. However, owing to a lack of obvious phenotype in single loss-of-function mutants in Aux/IAA genes, most genetic studies have relied on gain-of-function mutants, which are highly pleiotropic. In this article, we describe a molecular framework for the role of several members of the auxin sensing machinery.Using loss-of-function mutants, we demonstrate that TIR1 and AFB2 are positive regulators, whereas IAA6, IAA9 and IAA17 are negative regulators of adventitious root (AR) formation. The three Aux/IAA proteins interact with ARF6 and/or ARF8, which we have previously shown to be positive regulators of AR formation upstream of jasmonate, and likely repress their activity. Our data also suggest a dual role for TIR1 in the control of JA biosynthesis and conjugation, as revealed by upregulation of several JA biosynthesis genes in the tir1-1 mutant. In conclusion, we propose that in the presence of auxin, TIR1 and AFB2 form specific sensing complexes with IAA6, IAA9 and/or IAA17 that modulate JA homeostasis to control AR initiation.

show abstract

Lateral Root Formation

Bellande

Laplaze

Guyomarc’h

2022

Encyclopedia of Life Sciences

View full text Add to dashboard Cite

The underground development of the plant root system is a complex and plastic process. It enables the plants to mine hydromineral resources while dealing with changes in their environment. Root branching via lateral root formation is considered as an important trait because it greatly influences root system architecture and impacts plant growth and crop performance. In the past few years, major progresses in understanding the mechanisms of root branching have been made. Technical advances lift the veil on multiple molecular and cellular processes that contribute to the robust formation of new lateral roots in plant models and to its response to endogenous and environmental cues. Developing translational approaches should increase in the coming decades to allow a global and integrative vision of root system development and the mechanisms of root branching in various plant species. Moreover, exploring the genetic diversity that modulates this fundamental process opens the way to breeding crops with more efficient root system architectures. Key Concepts Lateral root formation significantly influences root system architecture, a key trait for plant interaction with the soil and especially, plant nutrition. Lateral root primordium initiation, development and emergence from the primary root have been well described in several plant model species. Lateral root formation is highly regulated. Many molecular mechanisms involved in this organogenesis process are known in detail, especially in the plant model Arabidopsis thaliana . Among these, the phytohormone auxin is a key regulatory signal influencing each step of lateral root formation. A complex regulatory network, integrating intercellular signals and mechanical constraints, triggers regularly spaced initiation of lateral root formation, allows robust organ patterning, and controls the lateral root primordium growth through the overlaying primary root tissues. Endogenous and environmental signals modulate lateral root formation kinetics and emergence, yielding plasticity in root system development. Comparison of lateral root development in different plant species reveals specific and conserved pathways. Genetic diversity can be explored and used to breed crops with optimised root branching properties.

show abstract

Root branching toward water involves posttranslational modification of transcription factor ARF7

Cited by 219 publications

References 29 publications

Regulation of auxin transcriptional responses

Regulation of auxin transcriptional responses

Molecular framework for TIR1/AFB-Aux/IAA-dependent auxin sensing controlling adventitious rooting in Arabidopsis

Lateral Root Formation

Contact Info

Product

Resources

About