Author Correction: A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate

Bhosale, Rahul; Giri, Jitender; Pandey, Bharati; Giehl, Ricardo Fabiano Hettwer; Hartmann, Anja; Traini, Richard; Truskina, Jekaterina; Leftley, Nicola; Hanlon, Meredith T.; Swarup, Kamal; Rashed, Afaf; Voß, Ute; Alonso, José M.; Stepanova, Anna N.; Yun, Jeonga; Ljung, Karin; Brown, Kathleen M.; Lynch, Jonathan P.; Dolan, Liam; Vernoux, Teva; Bishopp, Anthony; Wells, Darren M.; Wirén, Nicolaus von; Bennett, Malcolm; Swarup, Ranjan

doi:10.1038/s41467-018-04281-x

Cited by 11 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Root system architecture (RSA) determines the distribution of root surface area within the soil profile and so the plant’s capacity to capture nutrients and water ( Ho et al., 2004 ; Hochholdinger & Tuberosa, 2009 ; Coudert et al., 2010 ; Gewin, 2010 ; Bhosale et al., 2018 ; Giri et al., 2018 ; Meng et al., 2019). These traits therefore have a direct bearing on crop productivity, particularly under conditions of low resource availability ( Lynch, 2011 ; Lynch, 2013 ; Lynch et al., 2014 ; Lynch, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Phosphite treatment can improve root biomass and nutrition use efficiency in wheat

et al. 2022

Self Cite

View full text Add to dashboard Cite

Phosphite represents a reduced form of phosphate that belongs to a class of crop growth-promoting chemicals termed biostimulants. Previous research has shown that phosphite application can enhance root growth, but its underlying mechanism, especially during environmental stresses, remains elusive. To uncover this, we undertook a series of morphological and physiological analyses under nutrient, water and heat stresses following a foliar application in wheat. Non-invasive 3D imaging of root system architecture directly in soil using X-ray Computed Tomography revealed that phosphite treatment improves root architectural traits and increased root biomass. Biochemical and physiological assays identified that phosphite treatment significantly increases Nitrate Reductase (NR) activity, leaf photosynthesis and stomatal conductance, suggesting improved Nitrogen and Carbon assimilation, respectively. These differences were more pronounced under heat or drought treatment (photosynthesis and photosystem II stability) and nutrient deficiency (root traits and NR). Overall our results suggest that phosphite treatment improves the ability of plants to tolerate abiotic stresses through improved Nitrogen and Carbon assimilation, combined with improved root growth which may improve biomass and yield.

show abstract

Section: Discussionmentioning

confidence: 99%

Phosphite treatment can improve root biomass and nutrition use efficiency in wheat

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…For instance, low levels of nitrate stimulate auxin accumulation in roots of Arabidopsis and maize ( Ma et al, 2014 ; Sun et al, 2020 ), and low concentrations of ammonium also increase auxin content in the Arabidopsis root ( Meier et al, 2020 ). Similarly, phosphorus deficiency improves auxin levels in roots of Arabidopsis and Foxtail millet ( Ahmad et al, 2018 ; Bhosale et al, 2018 ), and potassium limitation modulates the expression of auxin-responsive genes in the root of rice ( Ma et al, 2012 ). Zinc supply alters auxin homeostasis in the roots of Arabidopsis ( Zhang et al, 2018 ; Wang et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Magnesium Limitation Leads to Transcriptional Down-Tuning of Auxin Synthesis, Transport, and Signaling in the Tomato Root

et al. 2021

View full text Add to dashboard Cite

Magnesium (Mg) deficiency is becoming a widespread limiting factor for crop production. How crops adapt to Mg limitation remains largely unclear at the molecular level. Using hydroponic-cultured tomato seedlings, we found that total Mg2+ content significantly decreased by ∼80% under Mg limitation while K+ and Ca2+ concentrations increased. Phylogenetic analysis suggested that Mg transporters (MRS2/MGTs) constitute a previously uncharacterized 3-clade tree in planta with two rounds of asymmetric duplications, providing evolutionary evidence for further molecular investigation. In adaptation to internal Mg deficiency, the expression of six representative MGTs (two in the shoot and four in the root) was up-regulated in Mg-deficient plants. Contradictory to the transcriptional elevation of most of MGTs, Mg limitation resulted in the ∼50% smaller root system. Auxin concentrations particularly decreased by ∼23% in the Mg-deficient root, despite the enhanced accumulation of gibberellin, cytokinin, and ABA. In accordance with such auxin reduction was overall transcriptional down-regulation of thirteen genes controlling auxin biosynthesis (TAR/YUCs), transport (LAXs, PINs), and signaling (IAAs, ARFs). Together, systemic down-tuning of gene expression in the auxin signaling pathway under Mg limitation preconditions a smaller tomato root system, expectedly stimulating MGT transcription for Mg uptake or translocation.

show abstract

“… 11 Another possibility is that CK-independent signaling(s) also work in the Pi starvation response. Auxin and ethylene function in increasing root hair length under low Pi conditions, 19 , 20 suggesting that these hormones are also associated with Pi deficiency-dependent root hair growth. In arr1/12 , Pi starvation did not induce RSL4 but promoted root hair elongation ( Figures 1c, 2a ), suggesting that factor(s) other than RSL4 are also involved in Pi starvation response independently of ARR1/12, possibly through enhancing auxin and/or ethylene signaling to promote root hair growth.…”

Section: Resultsmentioning

confidence: 99%

“…Favoring this notion, root hair elongation was subtly yet significantly enhanced in the rsl4 loss-of-function mutant subjected to low Pi conditions. 20 The mechanism by which multiple hormonal pathways coordinate root hair growth depending on exogenous Pi level is an interesting question for future studies.…”

Section: Resultsmentioning

confidence: 99%

Cytokinin signaling is involved in root hair elongation in response to phosphate starvation

Takatsuka,

Amari,

Umeda

2024

Plant Signaling & Behavior

View full text Add to dashboard Cite

Root hair, single-celled tubular structures originating from the epidermis, plays a vital role in the uptake of nutrients from the soil by increasing the root surface area. Therefore, optimizing root hair growth is crucial for plants to survive in fluctuating environments. Root hair length is determined by the action of various plant hormones, among which the roles of auxin and ethylene have been extensively studied. However, evidence for the involvement of cytokinins has remained elusive. We recently reported that the cytokinin-activated B-type response regulators, ARABIDOPSIS RESPONSE REGULATOR 1 (ARR1) and ARR12 directly upregulate the expression of ROOT HAIR DEFECTIVE 6-LIKE 4 ( RSL4 ), which encodes a key transcription factor that controls root hair elongation. However, depending on the nutrient availability, it is unknown whether the ARR1/12–RSL4 pathway controls root hair elongation. This study shows that phosphate deficiency induced the expression of RSL4 and increased the root hair length through ARR1/12, though the transcript and protein levels of ARR1/12 did not change. These results indicate that cytokinins, together with other hormones, regulate root hair growth under phosphate starvation conditions.

show abstract

Author Correction: A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate

Abstract: The original version of this Article omitted the following from the Acknowledgements: ‘We also thank DBT-CREST BT/HRD/03/01/2002.’ This has been corrected in both the PDF and HTML versions of the Article.

Cited by 11 publications

References 0 publications

Phosphite treatment can improve root biomass and nutrition use efficiency in wheat

Phosphite treatment can improve root biomass and nutrition use efficiency in wheat

Magnesium Limitation Leads to Transcriptional Down-Tuning of Auxin Synthesis, Transport, and Signaling in the Tomato Root

Cytokinin signaling is involved in root hair elongation in response to phosphate starvation

Contact Info

Product

Resources

About