A Petunia Homeodomain-Leucine Zipper Protein, PhHD-Zip, Plays an Important Role in Flower Senescence

Flower senescence is initiated by developmental and environmental signals, and regulated by gene transcription. A homeodomain-leucine zipper transcription factor, PhHD-Zip, is up-regulated during petunia flower senescence. Virus-induced gene silencing of PhHD-Zip extended flower life by 20% both in...

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Autores principales: Chang, Xiaoxiao, Donnelly, Linda, Sun, Daoyang, Rao, Jingping, Reid, Michael S., Jiang, Cai-Zhong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3925126/
https://www.ncbi.nlm.nih.gov/pubmed/24551088
http://dx.doi.org/10.1371/journal.pone.0088320
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author Chang, Xiaoxiao
Donnelly, Linda
Sun, Daoyang
Rao, Jingping
Reid, Michael S.
Jiang, Cai-Zhong
author_facet Chang, Xiaoxiao
Donnelly, Linda
Sun, Daoyang
Rao, Jingping
Reid, Michael S.
Jiang, Cai-Zhong
author_sort Chang, Xiaoxiao
collection PubMed
description Flower senescence is initiated by developmental and environmental signals, and regulated by gene transcription. A homeodomain-leucine zipper transcription factor, PhHD-Zip, is up-regulated during petunia flower senescence. Virus-induced gene silencing of PhHD-Zip extended flower life by 20% both in unpollinated and pollinated flowers. Silencing PhHD-Zip also dramatically reduced ethylene production and the abundance of transcripts of genes involved in ethylene (ACS, ACO), and ABA (NCED) biosynthesis. Abundance of transcripts of senescence-related genes (SAG12, SAG29) was also dramatically reduced in the silenced flowers. Over-expression of PhHD-Zip accelerated petunia flower senescence. Furthermore, PhHD-Zip transcript abundance in petunia flowers was increased by application of hormones (ethylene, ABA) and abiotic stresses (dehydration, NaCl and cold). Our results suggest that PhHD-Zip plays an important role in regulating petunia flower senescence.
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spelling pubmed-39251262014-02-18 A Petunia Homeodomain-Leucine Zipper Protein, PhHD-Zip, Plays an Important Role in Flower Senescence Chang, Xiaoxiao Donnelly, Linda Sun, Daoyang Rao, Jingping Reid, Michael S. Jiang, Cai-Zhong PLoS One Research Article Flower senescence is initiated by developmental and environmental signals, and regulated by gene transcription. A homeodomain-leucine zipper transcription factor, PhHD-Zip, is up-regulated during petunia flower senescence. Virus-induced gene silencing of PhHD-Zip extended flower life by 20% both in unpollinated and pollinated flowers. Silencing PhHD-Zip also dramatically reduced ethylene production and the abundance of transcripts of genes involved in ethylene (ACS, ACO), and ABA (NCED) biosynthesis. Abundance of transcripts of senescence-related genes (SAG12, SAG29) was also dramatically reduced in the silenced flowers. Over-expression of PhHD-Zip accelerated petunia flower senescence. Furthermore, PhHD-Zip transcript abundance in petunia flowers was increased by application of hormones (ethylene, ABA) and abiotic stresses (dehydration, NaCl and cold). Our results suggest that PhHD-Zip plays an important role in regulating petunia flower senescence. Public Library of Science 2014-02-14 /pmc/articles/PMC3925126/ /pubmed/24551088 http://dx.doi.org/10.1371/journal.pone.0088320 Text en https://creativecommons.org/publicdomain/zero/1.0/ This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.
spellingShingle Research Article
Chang, Xiaoxiao
Donnelly, Linda
Sun, Daoyang
Rao, Jingping
Reid, Michael S.
Jiang, Cai-Zhong
A Petunia Homeodomain-Leucine Zipper Protein, PhHD-Zip, Plays an Important Role in Flower Senescence
title A Petunia Homeodomain-Leucine Zipper Protein, PhHD-Zip, Plays an Important Role in Flower Senescence
title_full A Petunia Homeodomain-Leucine Zipper Protein, PhHD-Zip, Plays an Important Role in Flower Senescence
title_fullStr A Petunia Homeodomain-Leucine Zipper Protein, PhHD-Zip, Plays an Important Role in Flower Senescence
title_full_unstemmed A Petunia Homeodomain-Leucine Zipper Protein, PhHD-Zip, Plays an Important Role in Flower Senescence
title_short A Petunia Homeodomain-Leucine Zipper Protein, PhHD-Zip, Plays an Important Role in Flower Senescence
title_sort petunia homeodomain-leucine zipper protein, phhd-zip, plays an important role in flower senescence
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3925126/
https://www.ncbi.nlm.nih.gov/pubmed/24551088
http://dx.doi.org/10.1371/journal.pone.0088320
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