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Molecular basis of floral petaloidy: insights from androecia of Canna indica
Floral organs that take on the characteristics of petals can occur in all whorls of the monocot order Zingiberales. In Canna indica, the most ornamental or ‘petaloid’ parts of the flowers are of androecial origin and are considered staminodes. However, the precise nature of these petaloid organs is...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Oxford University Press
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4011470/ https://www.ncbi.nlm.nih.gov/pubmed/24876297 http://dx.doi.org/10.1093/aobpla/plu015 |
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author | Fu, Qian Liu, Huanfang Almeida, Ana M. R. Kuang, Yanfeng Zou, Pu Liao, Jingping |
author_facet | Fu, Qian Liu, Huanfang Almeida, Ana M. R. Kuang, Yanfeng Zou, Pu Liao, Jingping |
author_sort | Fu, Qian |
collection | PubMed |
description | Floral organs that take on the characteristics of petals can occur in all whorls of the monocot order Zingiberales. In Canna indica, the most ornamental or ‘petaloid’ parts of the flowers are of androecial origin and are considered staminodes. However, the precise nature of these petaloid organs is yet to be determined. In order to gain a better understanding of the genetic basis of androecial identity, a molecular investigation of B- and C-class genes was carried out. Two MADS-box genes GLOBOSA (GLO) and AGAMOUS (AG) were isolated from young inflorescences of C. indica by 3′ rapid amplification of cDNA ends polymerase chain reaction (3′-RACE PCR). Sequence characterization and phylogenetic analyses show that CiGLO and CiAG belong to the B- and C-class MADS-box gene family, respectively. CiAG is expressed in petaloid staminodes, the labellum, the fertile stamen and carpels. CiGLO is expressed in petals, petaloid staminodes, the labellum, the fertile stamen and carpels. Expression patterns in mature tissues of CiGLO and CiAG suggest that petaloid staminodes and the labellum are of androecial identity, in agreement with their position within the flower and with described Arabidopsis thaliana expression patterns. Although B- and C-class genes are important components of androecial determination, their expression patterns are not sufficient to explain the distinct morphology observed in staminodes and the fertile stamen in C. indica. |
format | Online Article Text |
id | pubmed-4011470 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-40114702014-05-06 Molecular basis of floral petaloidy: insights from androecia of Canna indica Fu, Qian Liu, Huanfang Almeida, Ana M. R. Kuang, Yanfeng Zou, Pu Liao, Jingping AoB Plants Research Articles Floral organs that take on the characteristics of petals can occur in all whorls of the monocot order Zingiberales. In Canna indica, the most ornamental or ‘petaloid’ parts of the flowers are of androecial origin and are considered staminodes. However, the precise nature of these petaloid organs is yet to be determined. In order to gain a better understanding of the genetic basis of androecial identity, a molecular investigation of B- and C-class genes was carried out. Two MADS-box genes GLOBOSA (GLO) and AGAMOUS (AG) were isolated from young inflorescences of C. indica by 3′ rapid amplification of cDNA ends polymerase chain reaction (3′-RACE PCR). Sequence characterization and phylogenetic analyses show that CiGLO and CiAG belong to the B- and C-class MADS-box gene family, respectively. CiAG is expressed in petaloid staminodes, the labellum, the fertile stamen and carpels. CiGLO is expressed in petals, petaloid staminodes, the labellum, the fertile stamen and carpels. Expression patterns in mature tissues of CiGLO and CiAG suggest that petaloid staminodes and the labellum are of androecial identity, in agreement with their position within the flower and with described Arabidopsis thaliana expression patterns. Although B- and C-class genes are important components of androecial determination, their expression patterns are not sufficient to explain the distinct morphology observed in staminodes and the fertile stamen in C. indica. Oxford University Press 2014-03-31 /pmc/articles/PMC4011470/ /pubmed/24876297 http://dx.doi.org/10.1093/aobpla/plu015 Text en Published by Oxford University Press on behalf of the Annals of Botany Company. http://creativecommons.org/licenses/by/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Fu, Qian Liu, Huanfang Almeida, Ana M. R. Kuang, Yanfeng Zou, Pu Liao, Jingping Molecular basis of floral petaloidy: insights from androecia of Canna indica |
title | Molecular basis of floral petaloidy: insights from androecia of Canna indica |
title_full | Molecular basis of floral petaloidy: insights from androecia of Canna indica |
title_fullStr | Molecular basis of floral petaloidy: insights from androecia of Canna indica |
title_full_unstemmed | Molecular basis of floral petaloidy: insights from androecia of Canna indica |
title_short | Molecular basis of floral petaloidy: insights from androecia of Canna indica |
title_sort | molecular basis of floral petaloidy: insights from androecia of canna indica |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4011470/ https://www.ncbi.nlm.nih.gov/pubmed/24876297 http://dx.doi.org/10.1093/aobpla/plu015 |
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