globalchange  > 过去全球变化的重建
DOI: 10.1007/s11627-019-09981-7
WOS记录号: WOS:000465978100004
论文题名:
In vitro cloning via direct somatic embryogenesis and genetic stability assessment of Paphiopedilum niveum (Rchb.f.) Stein: the endangered Venus's slipper orchid
作者: Soonthornkalump, Sutthinut1; Nakkanong, Korakot2; Meesawat, Upatham1
通讯作者: Meesawat, Upatham
刊名: IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-PLANT
ISSN: 1054-5476
EISSN: 1475-2689
出版年: 2019
卷: 55, 期:3, 页码:265-276
语种: 英语
英文关键词: Micropropagation of Paphiopedilum niveum (Rchb.f.) Stein ; Direct somatic embryogenesis ; Protocorm-like bodies ; Histology ; RAPD
WOS关键词: PROTOCORM-LIKE BODIES ; PLANT-REGENERATION ; SOMACLONAL VARIATION ; RAPD ; MICROPROPAGATION ; ISSR ; DIFFERENTIATION ; MULTIPLICATION ; GERMINATION ; HOMOGENEITY
WOS学科分类: Plant Sciences ; Cell Biology ; Developmental Biology
WOS研究方向: Plant Sciences ; Cell Biology ; Developmental Biology
英文摘要:

Wild populations of Paphiopedilum niveum (Rchb.f.) Stein, an endangered orchid species, have been threatened with extinction due to climate change and overcollection. Conventional methods of propagation are unable to meet market demands. The current study reports the production of genetically stable, protocorm-derived protocorm-like bodies (PLBs) of P. niveum that can be used for commercial production. These PLBs are referred to hereafter as somatic embryos (SEs). Factors affecting SE induction and SE proliferation were examined. The highest percentage of SE formation (68.33 +/- 11.77%) and the maximum number of SEs per explant (5.19 +/- 0.67) were obtained on modified Vacin and Went (MVW) medium containing 0.1 mg L-1 1-naphthaleneacetic acid (NAA). The highest increase in fresh weight (FW) of proliferated SEs (183.33 +/- 28.93mg per 100 mg initial FW) was gained on hormone-free MVW. These SEs eventually developed into vigorous plantlets after culturing on MVW supplemented with 0.2% (w/v) activated charcoal and 50 g L-1 banana homogenate for 12 wk. A histological study revealed that SEs originated from both the epidermal and the sub-epidermal layers of the original protocorm via direct somatic embryogenesis. The genetic homogeneity between the mother generation (V-1; the original protocorm) and subsequent generations (V-2 and V-3; the primary and secondary somatic embryos, respectively) was shown to be identical via random amplification of polymorphic DNA (RAPD) assessment. All regenerated plants grew well under greenhouse conditions.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/139692
Appears in Collections:过去全球变化的重建

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作者单位: 1.Prince Songkla Univ, Fac Sci, Dept Biol, Hat Yai 90110, Thailand
2.Prince Songkla Univ, Fac Nat Resources, Dept Plant Sci, Hat Yai 90110, Thailand

Recommended Citation:
Soonthornkalump, Sutthinut,Nakkanong, Korakot,Meesawat, Upatham. In vitro cloning via direct somatic embryogenesis and genetic stability assessment of Paphiopedilum niveum (Rchb.f.) Stein: the endangered Venus's slipper orchid[J]. IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-PLANT,2019-01-01,55(3):265-276
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