Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Fu, Qian, Liu, Huanfang, Almeida, Ana M. R., Kuang, Yanfeng, Zou, Pu, Liao, Jingping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2014
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
_version_ 1782314804995686400
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
work_keys_str_mv AT fuqian molecularbasisoffloralpetaloidyinsightsfromandroeciaofcannaindica
AT liuhuanfang molecularbasisoffloralpetaloidyinsightsfromandroeciaofcannaindica
AT almeidaanamr molecularbasisoffloralpetaloidyinsightsfromandroeciaofcannaindica
AT kuangyanfeng molecularbasisoffloralpetaloidyinsightsfromandroeciaofcannaindica
AT zoupu molecularbasisoffloralpetaloidyinsightsfromandroeciaofcannaindica
AT liaojingping molecularbasisoffloralpetaloidyinsightsfromandroeciaofcannaindica