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

Rahul Bhosale, Jitender Giri, Bipin K. Pandey, Ricardo F.H. Giehl, Anja Hartmann, Richard Traini, Jekaterina Truskina, Nicola Leftley, Meredith Hanlon, Kamal Swarup, Afaf Rashed, Ute Voß, Jose Alonso, Anna Stepanova, Jeonga Yun, Karin Ljung, Kathleen M. Brown, Jonathan P. Lynch, Liam Dolan, Teva VernouxAnthony Bishopp, Darren Wells, Nicolaus Von Wirén, Malcolm J. Bennett, Ranjan Swarup

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Phosphate (P) is an essential macronutrient for plant growth. Roots employ adaptive mechanisms to forage for P in soil. Root hair elongation is particularly important since P is immobile. Here we report that auxin plays a critical role promoting root hair growth in Arabidopsis in response to low external P. Mutants disrupting auxin synthesis (taa1) and transport (aux1) attenuate the low P root hair response. Conversely, targeting AUX1 expression in lateral root cap and epidermal cells rescues this low P response in aux1. Hence auxin transport from the root apex to differentiation zone promotes auxin-dependent hair response to low P. Low external P results in induction of root hair expressed auxin-inducible transcription factors ARF19, RSL2, and RSL4. Mutants lacking these genes disrupt the low P root hair response. We conclude auxin synthesis, transport and response pathway components play critical roles regulating this low P root adaptive response.

Original languageEnglish (US)
Article number1409
JournalNature communications
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2018

Fingerprint

auxins
Indoleacetic Acids
hair
Arabidopsis
elongation
Elongation
phosphates
Phosphates
disrupting
Growth
synthesis
caps
genes
Transcription Factors
Soil
Genes
soils
induction
apexes
Soils

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Bhosale, R., Giri, J., Pandey, B. K., Giehl, R. F. H., Hartmann, A., Traini, R., ... Swarup, R. (2018). A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate. Nature communications, 9(1), [1409]. https://doi.org/10.1038/s41467-018-03851-3
Bhosale, Rahul ; Giri, Jitender ; Pandey, Bipin K. ; Giehl, Ricardo F.H. ; Hartmann, Anja ; Traini, Richard ; Truskina, Jekaterina ; Leftley, Nicola ; Hanlon, Meredith ; Swarup, Kamal ; Rashed, Afaf ; Voß, Ute ; Alonso, Jose ; Stepanova, Anna ; Yun, Jeonga ; Ljung, Karin ; Brown, Kathleen M. ; Lynch, Jonathan P. ; Dolan, Liam ; Vernoux, Teva ; Bishopp, Anthony ; Wells, Darren ; Von Wirén, Nicolaus ; Bennett, Malcolm J. ; Swarup, Ranjan. / A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate. In: Nature communications. 2018 ; Vol. 9, No. 1.
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abstract = "Phosphate (P) is an essential macronutrient for plant growth. Roots employ adaptive mechanisms to forage for P in soil. Root hair elongation is particularly important since P is immobile. Here we report that auxin plays a critical role promoting root hair growth in Arabidopsis in response to low external P. Mutants disrupting auxin synthesis (taa1) and transport (aux1) attenuate the low P root hair response. Conversely, targeting AUX1 expression in lateral root cap and epidermal cells rescues this low P response in aux1. Hence auxin transport from the root apex to differentiation zone promotes auxin-dependent hair response to low P. Low external P results in induction of root hair expressed auxin-inducible transcription factors ARF19, RSL2, and RSL4. Mutants lacking these genes disrupt the low P root hair response. We conclude auxin synthesis, transport and response pathway components play critical roles regulating this low P root adaptive response.",
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Bhosale, R, Giri, J, Pandey, BK, Giehl, RFH, Hartmann, A, Traini, R, Truskina, J, Leftley, N, Hanlon, M, Swarup, K, Rashed, A, Voß, U, Alonso, J, Stepanova, A, Yun, J, Ljung, K, Brown, KM, Lynch, JP, Dolan, L, Vernoux, T, Bishopp, A, Wells, D, Von Wirén, N, Bennett, MJ & Swarup, R 2018, 'A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate', Nature communications, vol. 9, no. 1, 1409. https://doi.org/10.1038/s41467-018-03851-3

A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate. / Bhosale, Rahul; Giri, Jitender; Pandey, Bipin K.; Giehl, Ricardo F.H.; Hartmann, Anja; Traini, Richard; Truskina, Jekaterina; Leftley, Nicola; Hanlon, Meredith; Swarup, Kamal; Rashed, Afaf; Voß, Ute; Alonso, Jose; Stepanova, Anna; Yun, Jeonga; Ljung, Karin; Brown, Kathleen M.; Lynch, Jonathan P.; Dolan, Liam; Vernoux, Teva; Bishopp, Anthony; Wells, Darren; Von Wirén, Nicolaus; Bennett, Malcolm J.; Swarup, Ranjan.

In: Nature communications, Vol. 9, No. 1, 1409, 01.12.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate

AU - Bhosale, Rahul

AU - Giri, Jitender

AU - Pandey, Bipin K.

AU - Giehl, Ricardo F.H.

AU - Hartmann, Anja

AU - Traini, Richard

AU - Truskina, Jekaterina

AU - Leftley, Nicola

AU - Hanlon, Meredith

AU - Swarup, Kamal

AU - Rashed, Afaf

AU - Voß, Ute

AU - Alonso, Jose

AU - Stepanova, Anna

AU - Yun, Jeonga

AU - Ljung, Karin

AU - Brown, Kathleen M.

AU - Lynch, Jonathan P.

AU - Dolan, Liam

AU - Vernoux, Teva

AU - Bishopp, Anthony

AU - Wells, Darren

AU - Von Wirén, Nicolaus

AU - Bennett, Malcolm J.

AU - Swarup, Ranjan

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Phosphate (P) is an essential macronutrient for plant growth. Roots employ adaptive mechanisms to forage for P in soil. Root hair elongation is particularly important since P is immobile. Here we report that auxin plays a critical role promoting root hair growth in Arabidopsis in response to low external P. Mutants disrupting auxin synthesis (taa1) and transport (aux1) attenuate the low P root hair response. Conversely, targeting AUX1 expression in lateral root cap and epidermal cells rescues this low P response in aux1. Hence auxin transport from the root apex to differentiation zone promotes auxin-dependent hair response to low P. Low external P results in induction of root hair expressed auxin-inducible transcription factors ARF19, RSL2, and RSL4. Mutants lacking these genes disrupt the low P root hair response. We conclude auxin synthesis, transport and response pathway components play critical roles regulating this low P root adaptive response.

AB - Phosphate (P) is an essential macronutrient for plant growth. Roots employ adaptive mechanisms to forage for P in soil. Root hair elongation is particularly important since P is immobile. Here we report that auxin plays a critical role promoting root hair growth in Arabidopsis in response to low external P. Mutants disrupting auxin synthesis (taa1) and transport (aux1) attenuate the low P root hair response. Conversely, targeting AUX1 expression in lateral root cap and epidermal cells rescues this low P response in aux1. Hence auxin transport from the root apex to differentiation zone promotes auxin-dependent hair response to low P. Low external P results in induction of root hair expressed auxin-inducible transcription factors ARF19, RSL2, and RSL4. Mutants lacking these genes disrupt the low P root hair response. We conclude auxin synthesis, transport and response pathway components play critical roles regulating this low P root adaptive response.

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