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Molecular Evidences for the Interactions of Auxin, Gibberellin, and Cytokinin in Bent Peduncle Phenomenon in Rose (Rosa sp.)

In roses (Rosa sp.), peduncle morphology is an important ornamental feature. The common physiological abnormality known as the bent peduncle phenomenon (BPP) seriously decreases the quality of rose flowers and thus the commercial value. Because the molecular mechanisms underlying this condition are...

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Autores principales: Jing, Weikun, Zhang, Shuai, Fan, Youwei, Deng, Yinglong, Wang, Chengpeng, Lu, Jingyun, Sun, Xiaoming, Ma, Nan, Shahid, Muhammad Owais, Li, Yonghong, Zhou, Xiaofeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7072929/
https://www.ncbi.nlm.nih.gov/pubmed/32085472
http://dx.doi.org/10.3390/ijms21041360
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author Jing, Weikun
Zhang, Shuai
Fan, Youwei
Deng, Yinglong
Wang, Chengpeng
Lu, Jingyun
Sun, Xiaoming
Ma, Nan
Shahid, Muhammad Owais
Li, Yonghong
Zhou, Xiaofeng
author_facet Jing, Weikun
Zhang, Shuai
Fan, Youwei
Deng, Yinglong
Wang, Chengpeng
Lu, Jingyun
Sun, Xiaoming
Ma, Nan
Shahid, Muhammad Owais
Li, Yonghong
Zhou, Xiaofeng
author_sort Jing, Weikun
collection PubMed
description In roses (Rosa sp.), peduncle morphology is an important ornamental feature. The common physiological abnormality known as the bent peduncle phenomenon (BPP) seriously decreases the quality of rose flowers and thus the commercial value. Because the molecular mechanisms underlying this condition are poorly understood, we analysed the transcriptional profiles and cellular structures of bent rose peduncles. Numerous differentially expressed genes involved in the auxin, cytokinin, and gibberellin signaling pathways were shown to be associated with bent peduncle. Paraffin sections showed that the cell number on the upper sides of bent peduncles was increased, while the cells on the lower sides were larger than those in normal peduncles. We also investigated the large, deformed sepals that usually accompany BPP and found increased expression level of some auxin-responsive genes and decreased expression level of genes that are involved in cytokinin and gibberellin synthesis in these sepals. Furthermore, removal of the deformed sepals partially relieved BPP. In summary, our findings suggest that auxin, cytokinin, and gibberellin all influence the development of BPP by regulating cell division and expansion. To effectively reduce BPP in roses, more efforts need to be devoted to the molecular regulation of gibberellins and cytokinins in addition to that of auxin.
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spelling pubmed-70729292020-03-19 Molecular Evidences for the Interactions of Auxin, Gibberellin, and Cytokinin in Bent Peduncle Phenomenon in Rose (Rosa sp.) Jing, Weikun Zhang, Shuai Fan, Youwei Deng, Yinglong Wang, Chengpeng Lu, Jingyun Sun, Xiaoming Ma, Nan Shahid, Muhammad Owais Li, Yonghong Zhou, Xiaofeng Int J Mol Sci Article In roses (Rosa sp.), peduncle morphology is an important ornamental feature. The common physiological abnormality known as the bent peduncle phenomenon (BPP) seriously decreases the quality of rose flowers and thus the commercial value. Because the molecular mechanisms underlying this condition are poorly understood, we analysed the transcriptional profiles and cellular structures of bent rose peduncles. Numerous differentially expressed genes involved in the auxin, cytokinin, and gibberellin signaling pathways were shown to be associated with bent peduncle. Paraffin sections showed that the cell number on the upper sides of bent peduncles was increased, while the cells on the lower sides were larger than those in normal peduncles. We also investigated the large, deformed sepals that usually accompany BPP and found increased expression level of some auxin-responsive genes and decreased expression level of genes that are involved in cytokinin and gibberellin synthesis in these sepals. Furthermore, removal of the deformed sepals partially relieved BPP. In summary, our findings suggest that auxin, cytokinin, and gibberellin all influence the development of BPP by regulating cell division and expansion. To effectively reduce BPP in roses, more efforts need to be devoted to the molecular regulation of gibberellins and cytokinins in addition to that of auxin. MDPI 2020-02-18 /pmc/articles/PMC7072929/ /pubmed/32085472 http://dx.doi.org/10.3390/ijms21041360 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
Jing, Weikun
Zhang, Shuai
Fan, Youwei
Deng, Yinglong
Wang, Chengpeng
Lu, Jingyun
Sun, Xiaoming
Ma, Nan
Shahid, Muhammad Owais
Li, Yonghong
Zhou, Xiaofeng
Molecular Evidences for the Interactions of Auxin, Gibberellin, and Cytokinin in Bent Peduncle Phenomenon in Rose (Rosa sp.)
title Molecular Evidences for the Interactions of Auxin, Gibberellin, and Cytokinin in Bent Peduncle Phenomenon in Rose (Rosa sp.)
title_full Molecular Evidences for the Interactions of Auxin, Gibberellin, and Cytokinin in Bent Peduncle Phenomenon in Rose (Rosa sp.)
title_fullStr Molecular Evidences for the Interactions of Auxin, Gibberellin, and Cytokinin in Bent Peduncle Phenomenon in Rose (Rosa sp.)
title_full_unstemmed Molecular Evidences for the Interactions of Auxin, Gibberellin, and Cytokinin in Bent Peduncle Phenomenon in Rose (Rosa sp.)
title_short Molecular Evidences for the Interactions of Auxin, Gibberellin, and Cytokinin in Bent Peduncle Phenomenon in Rose (Rosa sp.)
title_sort molecular evidences for the interactions of auxin, gibberellin, and cytokinin in bent peduncle phenomenon in rose (rosa sp.)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7072929/
https://www.ncbi.nlm.nih.gov/pubmed/32085472
http://dx.doi.org/10.3390/ijms21041360
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