Association of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates

Changes in root elongation are important for the acquisition of mineral nutrients by plants. Plant hormones, cytokinins, and abscisic acid (ABA) and their interaction are important for the control of root elongation under changes in the availability of ions. However, their role in growth responses t...

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Autores principales:	Lidiya Vysotskaya, Leylya Timergalina, Guzel Akhiyarova, Alla Korobova, Vadim Fedyaev, Igor Ivanov, Guzel Kudoyarova, Dmitry Veselov
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>Hordeum vulgare</i> L. Az34 barley mutant abscisic acid (ABA) cytokinins mineral nutrition root elongation Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/6e4d413da7f4496f9ae90716ac50c2f2
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spelling	oai:doaj.org-article:6e4d413da7f4496f9ae90716ac50c2f22021-11-25T17:11:38ZAssociation of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates10.3390/cells101131102073-4409https://doaj.org/article/6e4d413da7f4496f9ae90716ac50c2f22021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4409/10/11/3110https://doaj.org/toc/2073-4409Changes in root elongation are important for the acquisition of mineral nutrients by plants. Plant hormones, cytokinins, and abscisic acid (ABA) and their interaction are important for the control of root elongation under changes in the availability of ions. However, their role in growth responses to supra-optimal concentrations of nitrates and phosphates has not been sufficiently studied and was addressed in the present research. Effects of supra-optimal concentrations of these ions on root elongation and distribution of cytokinins between roots and shoots were studied in ABA-deficient barley mutant Az34 and its parental variety, Steptoe. Cytokinin concentration in the cells of the growing root tips was analyzed with the help of an immunohistochemical technique. Increased concentrations of nitrates and phosphates led to the accumulation of ABA and cytokinins in the root tips, accompanied by a decline in shoot cytokinin content and inhibition of root elongation in Steptoe. Neither of the effects were detected in Az34, suggesting the importance of the ability of plants to accumulate ABA for the control of these responses. Since cytokinins are known to inhibit root elongation, the effect of supra-optimal concentration of nitrates and phosphates on root growth is likely to be due to the accumulation of cytokinins brought about by ABA-induced inhibition of cytokinin transport from roots to shoots.Lidiya VysotskayaLeylya TimergalinaGuzel AkhiyarovaAlla KorobovaVadim FedyaevIgor IvanovGuzel KudoyarovaDmitry VeselovMDPI AGarticle<i>Hordeum vulgare</i> L.Az34 barley mutantabscisic acid (ABA)cytokininsmineral nutritionroot elongationBiology (General)QH301-705.5ENCells, Vol 10, Iss 3110, p 3110 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>Hordeum vulgare</i> L. Az34 barley mutant abscisic acid (ABA) cytokinins mineral nutrition root elongation Biology (General) QH301-705.5
spellingShingle	<i>Hordeum vulgare</i> L. Az34 barley mutant abscisic acid (ABA) cytokinins mineral nutrition root elongation Biology (General) QH301-705.5 Lidiya Vysotskaya Leylya Timergalina Guzel Akhiyarova Alla Korobova Vadim Fedyaev Igor Ivanov Guzel Kudoyarova Dmitry Veselov Association of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates
description	Changes in root elongation are important for the acquisition of mineral nutrients by plants. Plant hormones, cytokinins, and abscisic acid (ABA) and their interaction are important for the control of root elongation under changes in the availability of ions. However, their role in growth responses to supra-optimal concentrations of nitrates and phosphates has not been sufficiently studied and was addressed in the present research. Effects of supra-optimal concentrations of these ions on root elongation and distribution of cytokinins between roots and shoots were studied in ABA-deficient barley mutant Az34 and its parental variety, Steptoe. Cytokinin concentration in the cells of the growing root tips was analyzed with the help of an immunohistochemical technique. Increased concentrations of nitrates and phosphates led to the accumulation of ABA and cytokinins in the root tips, accompanied by a decline in shoot cytokinin content and inhibition of root elongation in Steptoe. Neither of the effects were detected in Az34, suggesting the importance of the ability of plants to accumulate ABA for the control of these responses. Since cytokinins are known to inhibit root elongation, the effect of supra-optimal concentration of nitrates and phosphates on root growth is likely to be due to the accumulation of cytokinins brought about by ABA-induced inhibition of cytokinin transport from roots to shoots.
format	article
author	Lidiya Vysotskaya Leylya Timergalina Guzel Akhiyarova Alla Korobova Vadim Fedyaev Igor Ivanov Guzel Kudoyarova Dmitry Veselov
author_facet	Lidiya Vysotskaya Leylya Timergalina Guzel Akhiyarova Alla Korobova Vadim Fedyaev Igor Ivanov Guzel Kudoyarova Dmitry Veselov
author_sort	Lidiya Vysotskaya
title	Association of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates
title_short	Association of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates
title_full	Association of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates
title_fullStr	Association of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates
title_full_unstemmed	Association of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates
title_sort	association of barley root elongation with aba-dependent transport of cytokinins from roots and shoots under supra-optimal concentrations of nitrates and phosphates
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6e4d413da7f4496f9ae90716ac50c2f2
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Association of Barley Root Elongation with ABA-Dependent Transport of Cytokinins from Roots and Shoots under Supra-Optimal Concentrations of Nitrates and Phosphates

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