Cargando…

Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?

Strigolactones (SLs) are essential host recognition signals for both root-parasitic plants and arbuscular mycorrhizal (AM) fungi in the rhizosphere, and in planta SLs or their metabolites function as a novel class of plant hormones that regulate various aspects of plant growth through crosstalk with...

Descripción completa

Detalles Bibliográficos
Autores principales: Yoneyama, Kaori, Xie, Xiaonan, Nomura, Takahito, Yoneyama, Koichi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7251057/
https://www.ncbi.nlm.nih.gov/pubmed/32508849
http://dx.doi.org/10.3389/fpls.2020.00438
_version_ 1783538882498789376
author Yoneyama, Kaori
Xie, Xiaonan
Nomura, Takahito
Yoneyama, Koichi
author_facet Yoneyama, Kaori
Xie, Xiaonan
Nomura, Takahito
Yoneyama, Koichi
author_sort Yoneyama, Kaori
collection PubMed
description Strigolactones (SLs) are essential host recognition signals for both root-parasitic plants and arbuscular mycorrhizal (AM) fungi in the rhizosphere, and in planta SLs or their metabolites function as a novel class of plant hormones that regulate various aspects of plant growth through crosstalk with other hormones. Although nutrient availability is one of the important factors influencing SL production and exudation, and phosphate (Pi) deficiency significantly promotes SL production and exudation in host plants of AM fungi, how nutrient availability modulates SL production and exudation remains elusive. Cytokinin (CK), a canonical plant hormone, has extensively been studied as a shoot branching promoter and its biosynthesis is also influenced by mineral nutrients, especially nitrate, indicating that CK might be another key factor that affect SL production and exudation. In the present study, we show that CKs (t-zeatin, benzyladenine, kinetin, and CPPU) applied to hydroponic culture media significantly suppressed the SL levels in both the root exudates and the root tissues of rice plants grown under Pi deficiency. In a split-root system, CK suppressed SL production locally, while Pi affected SL production systemically, suggesting that Pi and CK act on SL production independently in rice plants.
format Online
Article
Text
id pubmed-7251057
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-72510572020-06-05 Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently? Yoneyama, Kaori Xie, Xiaonan Nomura, Takahito Yoneyama, Koichi Front Plant Sci Plant Science Strigolactones (SLs) are essential host recognition signals for both root-parasitic plants and arbuscular mycorrhizal (AM) fungi in the rhizosphere, and in planta SLs or their metabolites function as a novel class of plant hormones that regulate various aspects of plant growth through crosstalk with other hormones. Although nutrient availability is one of the important factors influencing SL production and exudation, and phosphate (Pi) deficiency significantly promotes SL production and exudation in host plants of AM fungi, how nutrient availability modulates SL production and exudation remains elusive. Cytokinin (CK), a canonical plant hormone, has extensively been studied as a shoot branching promoter and its biosynthesis is also influenced by mineral nutrients, especially nitrate, indicating that CK might be another key factor that affect SL production and exudation. In the present study, we show that CKs (t-zeatin, benzyladenine, kinetin, and CPPU) applied to hydroponic culture media significantly suppressed the SL levels in both the root exudates and the root tissues of rice plants grown under Pi deficiency. In a split-root system, CK suppressed SL production locally, while Pi affected SL production systemically, suggesting that Pi and CK act on SL production independently in rice plants. Frontiers Media S.A. 2020-05-20 /pmc/articles/PMC7251057/ /pubmed/32508849 http://dx.doi.org/10.3389/fpls.2020.00438 Text en Copyright © 2020 Yoneyama, Xie, Nomura and Yoneyama. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Yoneyama, Kaori
Xie, Xiaonan
Nomura, Takahito
Yoneyama, Koichi
Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?
title Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?
title_full Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?
title_fullStr Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?
title_full_unstemmed Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?
title_short Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?
title_sort do phosphate and cytokinin interact to regulate strigolactone biosynthesis or act independently?
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7251057/
https://www.ncbi.nlm.nih.gov/pubmed/32508849
http://dx.doi.org/10.3389/fpls.2020.00438
work_keys_str_mv AT yoneyamakaori dophosphateandcytokinininteracttoregulatestrigolactonebiosynthesisoractindependently
AT xiexiaonan dophosphateandcytokinininteracttoregulatestrigolactonebiosynthesisoractindependently
AT nomuratakahito dophosphateandcytokinininteracttoregulatestrigolactonebiosynthesisoractindependently
AT yoneyamakoichi dophosphateandcytokinininteracttoregulatestrigolactonebiosynthesisoractindependently