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The chemical compound ‘Heatin’ stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1‐subfamily of nitrilases

Temperature passively affects biological processes involved in plant growth. Therefore, it is challenging to study the dedicated temperature signalling pathways that orchestrate thermomorphogenesis, a suite of elongation growth‐based adaptations that enhance leaf‐cooling capacity. We screened a chem...

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Autores principales: van der Woude, Lennard, Piotrowski, Markus, Klaasse, Gruson, Paulus, Judith K., Krahn, Daniel, Ninck, Sabrina, Kaschani, Farnusch, Kaiser, Markus, Novák, Ondřej, Ljung, Karin, Bulder, Suzanne, van Verk, Marcel, Snoek, Basten L., Fiers, Martijn, Martin, Nathaniel I., van der Hoorn, Renier A. L., Robert, Stéphanie, Smeekens, Sjef, van Zanten, Martijn
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360157/
https://www.ncbi.nlm.nih.gov/pubmed/33768644
http://dx.doi.org/10.1111/tpj.15250
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author van der Woude, Lennard
Piotrowski, Markus
Klaasse, Gruson
Paulus, Judith K.
Krahn, Daniel
Ninck, Sabrina
Kaschani, Farnusch
Kaiser, Markus
Novák, Ondřej
Ljung, Karin
Bulder, Suzanne
van Verk, Marcel
Snoek, Basten L.
Fiers, Martijn
Martin, Nathaniel I.
van der Hoorn, Renier A. L.
Robert, Stéphanie
Smeekens, Sjef
van Zanten, Martijn
author_facet van der Woude, Lennard
Piotrowski, Markus
Klaasse, Gruson
Paulus, Judith K.
Krahn, Daniel
Ninck, Sabrina
Kaschani, Farnusch
Kaiser, Markus
Novák, Ondřej
Ljung, Karin
Bulder, Suzanne
van Verk, Marcel
Snoek, Basten L.
Fiers, Martijn
Martin, Nathaniel I.
van der Hoorn, Renier A. L.
Robert, Stéphanie
Smeekens, Sjef
van Zanten, Martijn
author_sort van der Woude, Lennard
collection PubMed
description Temperature passively affects biological processes involved in plant growth. Therefore, it is challenging to study the dedicated temperature signalling pathways that orchestrate thermomorphogenesis, a suite of elongation growth‐based adaptations that enhance leaf‐cooling capacity. We screened a chemical library for compounds that restored hypocotyl elongation in the pif4‐2–deficient mutant background at warm temperature conditions in Arabidopsis thaliana to identify modulators of thermomorphogenesis. The small aromatic compound ‘Heatin’, containing 1‐iminomethyl‐2‐naphthol as a pharmacophore, was selected as an enhancer of elongation growth. We show that ARABIDOPSIS ALDEHYDE OXIDASES redundantly contribute to Heatin‐mediated hypocotyl elongation. Following a chemical proteomics approach, the members of the NITRILASE1‐subfamily of auxin biosynthesis enzymes were identified among the molecular targets of Heatin. Our data reveal that nitrilases are involved in promotion of hypocotyl elongation in response to high temperature and Heatin‐mediated hypocotyl elongation requires the NITRILASE1‐subfamily members, NIT1 and NIT2. Heatin inhibits NIT1‐subfamily enzymatic activity in vitro and the application of Heatin accordingly results in the accumulation of NIT1‐subfamily substrate indole‐3‐acetonitrile in vivo. However, levels of the NIT1‐subfamily product, bioactive auxin (indole‐3‐acetic acid), were also significantly increased. It is likely that the stimulation of hypocotyl elongation by Heatin might be independent of its observed interaction with NITRILASE1‐subfamily members. However, nitrilases may contribute to the Heatin response by stimulating indole‐3‐acetic acid biosynthesis in an indirect way. Heatin and its functional analogues present novel chemical entities for studying auxin biology.
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spelling pubmed-83601572021-08-17 The chemical compound ‘Heatin’ stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1‐subfamily of nitrilases van der Woude, Lennard Piotrowski, Markus Klaasse, Gruson Paulus, Judith K. Krahn, Daniel Ninck, Sabrina Kaschani, Farnusch Kaiser, Markus Novák, Ondřej Ljung, Karin Bulder, Suzanne van Verk, Marcel Snoek, Basten L. Fiers, Martijn Martin, Nathaniel I. van der Hoorn, Renier A. L. Robert, Stéphanie Smeekens, Sjef van Zanten, Martijn Plant J Original Articles Temperature passively affects biological processes involved in plant growth. Therefore, it is challenging to study the dedicated temperature signalling pathways that orchestrate thermomorphogenesis, a suite of elongation growth‐based adaptations that enhance leaf‐cooling capacity. We screened a chemical library for compounds that restored hypocotyl elongation in the pif4‐2–deficient mutant background at warm temperature conditions in Arabidopsis thaliana to identify modulators of thermomorphogenesis. The small aromatic compound ‘Heatin’, containing 1‐iminomethyl‐2‐naphthol as a pharmacophore, was selected as an enhancer of elongation growth. We show that ARABIDOPSIS ALDEHYDE OXIDASES redundantly contribute to Heatin‐mediated hypocotyl elongation. Following a chemical proteomics approach, the members of the NITRILASE1‐subfamily of auxin biosynthesis enzymes were identified among the molecular targets of Heatin. Our data reveal that nitrilases are involved in promotion of hypocotyl elongation in response to high temperature and Heatin‐mediated hypocotyl elongation requires the NITRILASE1‐subfamily members, NIT1 and NIT2. Heatin inhibits NIT1‐subfamily enzymatic activity in vitro and the application of Heatin accordingly results in the accumulation of NIT1‐subfamily substrate indole‐3‐acetonitrile in vivo. However, levels of the NIT1‐subfamily product, bioactive auxin (indole‐3‐acetic acid), were also significantly increased. It is likely that the stimulation of hypocotyl elongation by Heatin might be independent of its observed interaction with NITRILASE1‐subfamily members. However, nitrilases may contribute to the Heatin response by stimulating indole‐3‐acetic acid biosynthesis in an indirect way. Heatin and its functional analogues present novel chemical entities for studying auxin biology. John Wiley and Sons Inc. 2021-05-06 2021-06 /pmc/articles/PMC8360157/ /pubmed/33768644 http://dx.doi.org/10.1111/tpj.15250 Text en © 2021 The Authors. The Plant Journal published by Society for Experimental Biology and John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
van der Woude, Lennard
Piotrowski, Markus
Klaasse, Gruson
Paulus, Judith K.
Krahn, Daniel
Ninck, Sabrina
Kaschani, Farnusch
Kaiser, Markus
Novák, Ondřej
Ljung, Karin
Bulder, Suzanne
van Verk, Marcel
Snoek, Basten L.
Fiers, Martijn
Martin, Nathaniel I.
van der Hoorn, Renier A. L.
Robert, Stéphanie
Smeekens, Sjef
van Zanten, Martijn
The chemical compound ‘Heatin’ stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1‐subfamily of nitrilases
title The chemical compound ‘Heatin’ stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1‐subfamily of nitrilases
title_full The chemical compound ‘Heatin’ stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1‐subfamily of nitrilases
title_fullStr The chemical compound ‘Heatin’ stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1‐subfamily of nitrilases
title_full_unstemmed The chemical compound ‘Heatin’ stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1‐subfamily of nitrilases
title_short The chemical compound ‘Heatin’ stimulates hypocotyl elongation and interferes with the Arabidopsis NIT1‐subfamily of nitrilases
title_sort chemical compound ‘heatin’ stimulates hypocotyl elongation and interferes with the arabidopsis nit1‐subfamily of nitrilases
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360157/
https://www.ncbi.nlm.nih.gov/pubmed/33768644
http://dx.doi.org/10.1111/tpj.15250
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