Strigolactones Control Root System Architecture and Tip Anatomy in <i>Solanum Lycopersicum</i> L. Plants under P Starvation
The hormones strigolactones accumulate in plant roots under phosphorus (P) shortage, inducing variations in plant phenotype. In this study, we aimed at understanding whether strigolactones control morphological and anatomical changes in tomato (<i>Solanum lycopersicum</i> L.) roots under...
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doaj-4ddba57b544c4e47a0797e8c09db75802020-11-25T03:11:23ZengMDPI AGPlants2223-77472020-05-01961261210.3390/plants9050612Strigolactones Control Root System Architecture and Tip Anatomy in <i>Solanum Lycopersicum</i> L. Plants under P StarvationVeronica Santoro0Michela Schiavon1Francesco Gresta2Andrea Ertani3Francesca Cardinale4Craig J. Sturrock5Luisella Celi6Andrea Schubert7Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), Largo Paolo Braccini 2 (già Via Leonardo da Vinci, 44), 10095 Grugliasco (Torino), ItalyDipartimento di Agronomia, Animali, Alimenti, Risorse Naturali e Ambiente (DAFNAE), Viale dell’Università 16, 35020 Legnaro (Padova), ItalyDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), Largo Paolo Braccini 2 (già Via Leonardo da Vinci, 44), 10095 Grugliasco (Torino), ItalyDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), Largo Paolo Braccini 2 (già Via Leonardo da Vinci, 44), 10095 Grugliasco (Torino), ItalyDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), Largo Paolo Braccini 2 (già Via Leonardo da Vinci, 44), 10095 Grugliasco (Torino), ItalySchool of Biosciences, University of Nottingham, Loughborough LE12 5RD, UKDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), Largo Paolo Braccini 2 (già Via Leonardo da Vinci, 44), 10095 Grugliasco (Torino), ItalyDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), Largo Paolo Braccini 2 (già Via Leonardo da Vinci, 44), 10095 Grugliasco (Torino), ItalyThe hormones strigolactones accumulate in plant roots under phosphorus (P) shortage, inducing variations in plant phenotype. In this study, we aimed at understanding whether strigolactones control morphological and anatomical changes in tomato (<i>Solanum lycopersicum</i> L.) roots under varying P supply. Root traits were evaluated in wild-type seedlings grown in high vs low P, with or without exogenous strigolactones, and in wild-type and strigolactone-depleted plants grown first under high vs no P, and then under high vs no P after acclimation on low P. Exogenous strigolactones stimulated primary root and lateral root number under low P. Root growth was reduced in strigolactone-depleted plants maintained under continuous P deprivation. Total root and root hair length, lateral root number and root tip anatomy were impaired by low strigolactone biosynthesis in plants grown under low P or transferred from low to no P. Under adequate P conditions, root traits of strigolactone-depleted and wild-type plants were similar. Concluding, our results indicate that strigolactones i) control macro- and microscopic changes of root in tomato depending on P supply; and ii) do not affect root traits significantly when plants are supplemented with adequate P, but are needed for acclimation to no P and typical responses to low P.https://www.mdpi.com/2223-7747/9/5/612phosphorusstrigolactonesroot architectureroot anatomytomato |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Veronica Santoro Michela Schiavon Francesco Gresta Andrea Ertani Francesca Cardinale Craig J. Sturrock Luisella Celi Andrea Schubert |
spellingShingle |
Veronica Santoro Michela Schiavon Francesco Gresta Andrea Ertani Francesca Cardinale Craig J. Sturrock Luisella Celi Andrea Schubert Strigolactones Control Root System Architecture and Tip Anatomy in <i>Solanum Lycopersicum</i> L. Plants under P Starvation Plants phosphorus strigolactones root architecture root anatomy tomato |
author_facet |
Veronica Santoro Michela Schiavon Francesco Gresta Andrea Ertani Francesca Cardinale Craig J. Sturrock Luisella Celi Andrea Schubert |
author_sort |
Veronica Santoro |
title |
Strigolactones Control Root System Architecture and Tip Anatomy in <i>Solanum Lycopersicum</i> L. Plants under P Starvation |
title_short |
Strigolactones Control Root System Architecture and Tip Anatomy in <i>Solanum Lycopersicum</i> L. Plants under P Starvation |
title_full |
Strigolactones Control Root System Architecture and Tip Anatomy in <i>Solanum Lycopersicum</i> L. Plants under P Starvation |
title_fullStr |
Strigolactones Control Root System Architecture and Tip Anatomy in <i>Solanum Lycopersicum</i> L. Plants under P Starvation |
title_full_unstemmed |
Strigolactones Control Root System Architecture and Tip Anatomy in <i>Solanum Lycopersicum</i> L. Plants under P Starvation |
title_sort |
strigolactones control root system architecture and tip anatomy in <i>solanum lycopersicum</i> l. plants under p starvation |
publisher |
MDPI AG |
series |
Plants |
issn |
2223-7747 |
publishDate |
2020-05-01 |
description |
The hormones strigolactones accumulate in plant roots under phosphorus (P) shortage, inducing variations in plant phenotype. In this study, we aimed at understanding whether strigolactones control morphological and anatomical changes in tomato (<i>Solanum lycopersicum</i> L.) roots under varying P supply. Root traits were evaluated in wild-type seedlings grown in high vs low P, with or without exogenous strigolactones, and in wild-type and strigolactone-depleted plants grown first under high vs no P, and then under high vs no P after acclimation on low P. Exogenous strigolactones stimulated primary root and lateral root number under low P. Root growth was reduced in strigolactone-depleted plants maintained under continuous P deprivation. Total root and root hair length, lateral root number and root tip anatomy were impaired by low strigolactone biosynthesis in plants grown under low P or transferred from low to no P. Under adequate P conditions, root traits of strigolactone-depleted and wild-type plants were similar. Concluding, our results indicate that strigolactones i) control macro- and microscopic changes of root in tomato depending on P supply; and ii) do not affect root traits significantly when plants are supplemented with adequate P, but are needed for acclimation to no P and typical responses to low P. |
topic |
phosphorus strigolactones root architecture root anatomy tomato |
url |
https://www.mdpi.com/2223-7747/9/5/612 |
work_keys_str_mv |
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