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Sugar and Hormone Dynamics and the Expression Profiles of SUT/SUC and SWEET Sugar Transporters during Flower Development in Petunia axillaris

Flowering is the first committed step of plant sexual reproduction. While the developing flower is a strong sink requiring large quantity of sugars from photosynthetic source tissues, this process is under-temper-spatially controlled via hormone signaling pathway and nutrient availability. Sugar tra...

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Autores principales: Iftikhar, Junaid, Lyu, Meiling, Liu, Zhuoyi, Mehmood, Nasir, Munir, Nigarish, Ahmed, Mohamed A. A., Batool, Wajjiha, Aslam, Mehtab Muhammad, Yuan, Yuan, Wu, Binghua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764969/
https://www.ncbi.nlm.nih.gov/pubmed/33327497
http://dx.doi.org/10.3390/plants9121770
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author Iftikhar, Junaid
Lyu, Meiling
Liu, Zhuoyi
Mehmood, Nasir
Munir, Nigarish
Ahmed, Mohamed A. A.
Batool, Wajjiha
Aslam, Mehtab Muhammad
Yuan, Yuan
Wu, Binghua
author_facet Iftikhar, Junaid
Lyu, Meiling
Liu, Zhuoyi
Mehmood, Nasir
Munir, Nigarish
Ahmed, Mohamed A. A.
Batool, Wajjiha
Aslam, Mehtab Muhammad
Yuan, Yuan
Wu, Binghua
author_sort Iftikhar, Junaid
collection PubMed
description Flowering is the first committed step of plant sexual reproduction. While the developing flower is a strong sink requiring large quantity of sugars from photosynthetic source tissues, this process is under-temper-spatially controlled via hormone signaling pathway and nutrient availability. Sugar transporters SUT/SUC and SWEET mediate sugars movement across membranes and play a significant role in various physiological processes, including reproductive organ development. In Petunia axillaris, a model ornamental plant, 5 SUT/SUC and 36 SWEET genes are identified in the current version of the genome. Analysis of their gene structure and chromosomal locations reveal that SWEET family is moderately expanded. Most of the transporter genes are abundantly expressed in the flower than in other organs. During the five flower developmental stages, transcript levels of PaSUT1, PaSUT3, PaSWEET13c, PaSWEET9a, PaSWEET1d, PaSWEET5a and PaSWEET14a increase with the maturation of the flower and reach their maximum in the fully open flowers. PaSWEET9c, the nectar-specific PhNEC1 orthologous, is expressed in matured and fully opened flowers. Moreover, determination of sugar concentrations and phytohormone dynamics in flowers at the five developmental stages shows that glucose is the predominant form of sugar in young flowers at the early stage but depletes at the later stage, whereas sucrose accumulates only in maturated flowers prior to the corolla opening. On the other hand, GA(3) content and to a less extent IAA and zeatin decreases with the flower development; however, JA, SA and ABA display a remarkable peak at mid- or later flower developmental stage.
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spelling pubmed-77649692020-12-27 Sugar and Hormone Dynamics and the Expression Profiles of SUT/SUC and SWEET Sugar Transporters during Flower Development in Petunia axillaris Iftikhar, Junaid Lyu, Meiling Liu, Zhuoyi Mehmood, Nasir Munir, Nigarish Ahmed, Mohamed A. A. Batool, Wajjiha Aslam, Mehtab Muhammad Yuan, Yuan Wu, Binghua Plants (Basel) Article Flowering is the first committed step of plant sexual reproduction. While the developing flower is a strong sink requiring large quantity of sugars from photosynthetic source tissues, this process is under-temper-spatially controlled via hormone signaling pathway and nutrient availability. Sugar transporters SUT/SUC and SWEET mediate sugars movement across membranes and play a significant role in various physiological processes, including reproductive organ development. In Petunia axillaris, a model ornamental plant, 5 SUT/SUC and 36 SWEET genes are identified in the current version of the genome. Analysis of their gene structure and chromosomal locations reveal that SWEET family is moderately expanded. Most of the transporter genes are abundantly expressed in the flower than in other organs. During the five flower developmental stages, transcript levels of PaSUT1, PaSUT3, PaSWEET13c, PaSWEET9a, PaSWEET1d, PaSWEET5a and PaSWEET14a increase with the maturation of the flower and reach their maximum in the fully open flowers. PaSWEET9c, the nectar-specific PhNEC1 orthologous, is expressed in matured and fully opened flowers. Moreover, determination of sugar concentrations and phytohormone dynamics in flowers at the five developmental stages shows that glucose is the predominant form of sugar in young flowers at the early stage but depletes at the later stage, whereas sucrose accumulates only in maturated flowers prior to the corolla opening. On the other hand, GA(3) content and to a less extent IAA and zeatin decreases with the flower development; however, JA, SA and ABA display a remarkable peak at mid- or later flower developmental stage. MDPI 2020-12-14 /pmc/articles/PMC7764969/ /pubmed/33327497 http://dx.doi.org/10.3390/plants9121770 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Iftikhar, Junaid
Lyu, Meiling
Liu, Zhuoyi
Mehmood, Nasir
Munir, Nigarish
Ahmed, Mohamed A. A.
Batool, Wajjiha
Aslam, Mehtab Muhammad
Yuan, Yuan
Wu, Binghua
Sugar and Hormone Dynamics and the Expression Profiles of SUT/SUC and SWEET Sugar Transporters during Flower Development in Petunia axillaris
title Sugar and Hormone Dynamics and the Expression Profiles of SUT/SUC and SWEET Sugar Transporters during Flower Development in Petunia axillaris
title_full Sugar and Hormone Dynamics and the Expression Profiles of SUT/SUC and SWEET Sugar Transporters during Flower Development in Petunia axillaris
title_fullStr Sugar and Hormone Dynamics and the Expression Profiles of SUT/SUC and SWEET Sugar Transporters during Flower Development in Petunia axillaris
title_full_unstemmed Sugar and Hormone Dynamics and the Expression Profiles of SUT/SUC and SWEET Sugar Transporters during Flower Development in Petunia axillaris
title_short Sugar and Hormone Dynamics and the Expression Profiles of SUT/SUC and SWEET Sugar Transporters during Flower Development in Petunia axillaris
title_sort sugar and hormone dynamics and the expression profiles of sut/suc and sweet sugar transporters during flower development in petunia axillaris
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764969/
https://www.ncbi.nlm.nih.gov/pubmed/33327497
http://dx.doi.org/10.3390/plants9121770
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