NDLI: Endoreduplication and gene expression in somaclonal variants of clonally propagated Phalaenopsis ‘Wedding Promenade’

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Endoreduplication and gene expression in somaclonal variants of clonally propagated Phalaenopsis ‘Wedding Promenade’

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Endoreduplication and gene expression in somaclonal variants of clonally propagated Phalaenopsis ‘Wedding Promenade’

Content Provider	Springer Nature Link
Author	Lee, Hyun Jeong Yoon, Yeo Joong Paek, Kee Yoeup Park, So Young
Copyright Year	2017
Abstract	In the current study, we studied somaclonal variants of Phalaenopsis ‘Wedding Promenade’ (WP) to identify the factors that determine variation in this ornamental orchid. We grouped somaclonal variants of Phalaenopsis ‘Wedding Promenade’ based on their flower morphology (WP-N, WP-V1, WP-V2, and WP-V3). Morphological characteristics and histological studies were conducted in addition to flow cytometry and gene expression analyses of the flowers, leaves, and flower stalks. Morphological changes were observed in all WP groups; particularly, the width of the flower and the thickness of each organ were significantly increased when compared with those of normal flowers. The ploidy level of WP-V2 and WP-V3 was doubled in all organs, resulting in hexaploidy, while WP-N and WP-V1 were triploids. A high level of endoreduplication (3C-48C) was detected in the petals, leaves, and flower stalks of the WP Phalaenopsis variants. The expression patterns of HIGH PLOIDY 2 (HPY2) and MADS box transcription factor (PMADS4) isolated from Phalaenopsis were analyzed by real time quantitative PCR. HPY2 expression was the highest in the leaves of WP-V1, whereas its expression in flowers was similar in WP-V1 and normal flowers. Among the various flower organs analyzed, HPY2 expression was the highest in petals and lips of WP-V2. PMADS4 expression was not affected in the floral organs of the Phalaenopsis WP variants. The data identify a simple way to detect somaclonal variation in the Phalaenopsis WP variants and also provide insight into the causes of these variations.
Starting Page	85
Ending Page	92
Page Count	8
File Format	PDF
ISSN	22113452
Journal	Horticulture, Environment, and Biotechnology
Volume Number	58
Issue Number	1
e-ISSN	22113460
Language	English
Publisher	Korean Society for Horticultural Science
Publisher Date	2017-03-02
Publisher Place	Korea
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Life Sciences Plant Breeding/Biotechnology Plant Physiology Agriculture Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Horticulture Biotechnology

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