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Changes in the endopolyploidy pattern of different tissues in diploid and tetraploid Phalaenopsis aphrodite subsp. formosana (Orchidaceae).
- Source :
-
Plant science : an international journal of experimental plant biology [Plant Sci] 2011 Jul; Vol. 181 (1), pp. 31-8. Date of Electronic Publication: 2011 Mar 22. - Publication Year :
- 2011
-
Abstract
- Endopolyploidy is frequently observed during development in plant species. Patterns of endopolyploidy are diverse in the various organs of different plant species. However, little is known about the role of endopolyploidization and its significance in orchids. This study was undertaken to determine the extent of endopolyploidy in different tissues of the diploid and tetraploid genotypes of Phalaenopsis aphrodite subsp. formosana and to examine the factors that contribute to increased ploidy levels. Endopolyploidy occurs in various tissues of diploid and tetraploid orchids, at different developmental stages and under different culture conditions, as determined by flow cytometry. In this study, different patterns of endopolyploidy were observed in parts of the protocorms, leaves, roots and flowers. Endopolyploidy was found in all tissues studied except the pollinia and the tetraploid ovaries. A higher degree of endopolyploidy was observed in mature tissues compared to young tissues, greenhouse-grown plants compared to in vitro plants and diploid plants compared to tetraploid plants. We discuss the relationships between endopolyploidization and several factors related to plant growth, as well as some practical considerations of these findings.<br /> (Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.)
- Subjects :
- DNA, Plant analysis
Flow Cytometry
Flowers growth & development
Orchidaceae growth & development
Plant Leaves growth & development
Plant Roots genetics
Plant Roots growth & development
Seedlings genetics
Seedlings growth & development
Cell Nucleus genetics
Flowers genetics
Orchidaceae genetics
Plant Leaves genetics
Polyploidy
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2259
- Volume :
- 181
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Plant science : an international journal of experimental plant biology
- Publication Type :
- Academic Journal
- Accession number :
- 21600395
- Full Text :
- https://doi.org/10.1016/j.plantsci.2011.03.006