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More experience on orchids (10-23-2007) |
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One more review from We-chin Chang's team, Zygotic and somatic embryogenesis of Phalaenopsis (by JTChen, WP Gow, WC Chang), will be published in the coming December issue of Orchid Science and Biotechnology, a new plant science journal of Global Science Books.They explain their protocols to achieve repetitive embryogenesis from seed-derived protocorms in P. amabilis; and direct somatic embryo formation and subsequent secondary embryogenesis from leaf explants of P. amabilis, P. "Little Steve" and P. "Nebula". Factors such as explant types, explant orientation, culture period, subculture period, light requirement, basal media, medium compositions and growth regulators for embryo induction are comprehensively compared in this review.
Jen-Tsung Chen, the correspondent author, is now an assistant professor at Institute of Biotechnology of National University of Kaohsiung. He will contribute another review on their experience on direct somatic embryogenesis of Oncidium soon. |
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| Mining for black gold (10-19-2007) |
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| Humic substances (HS) are brown to black colored organic compounds formed by secondary synthesis reactions that represent an underexplored resource that can greatly benefit plant growth and nutrition and are increasingly popular in organic farming. In cooperation with the Dipartimento di Scienze Agrarie ed Ambientali at the University of Udine, Italy, Wolfgang Schmidt's group is studying the effects of low-molecular weight HS on post-embryonic plant development (Plant and Soil, online). It is shown that application of HS caused an ordered remodeling of the root morphology by affecting genes involved in cell specification, eventually leading to an increased absorptive surface of the root. |
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| Experience on orchids (9-1-2007) |
 Wei-chin Chang summarized the his team's work on several orchids in a review, In vitro morphogenesis and micropropgation of orchids in Orchid Biotechnology (eds WH Chen and HH Chen, 2007 World Scientific, p45-67). YI Lee at Mei-Chu Chung's lab wrote the chapter 2: Embryo development of orchids.
The book focuses on the recent advances in orchid biotechnology research since the last 10 years in Taiwan. To advance the orchid industry, enhancement of basic research as well as advanced biotechnology will provide a good platform to improve the flower quality and breeding of new varieties. Topics covered include the new knowledge of basic genome, through floral morphogenesis, floral ontology, embryogenesis, micropropagation, to functional genomics such as EST, virus-induced gene silencing, and genetic transformation.
Contents:
- Breeding and Development of New Varieties in Phalaenopsis (C-Y Tang & W-H Chen)
- Embryo Development of Orchids (Y-I Lee et al.)
- In vitro Morphogenesis and Micro-Propagation of Orchids (W-C Chang)
- Somaclonal Variation in Orchids (F-C Chen & W-H Chen)
- The Screening of Orchid Mycorrhizal Fungi (OMF) and their Applications (D C N Chang)
- Analysis of the Orchid Genome Size Using Flow Cytometry (T-Y Lin & H-C Lee)
- The Cytogenetics of Phalaenopsis Orchids (Y-Y Kao et al.)
- Analysis of the Chloroplast Genome of Phalaenopsis aphrodite (C-C Chang et al.)
- Analysis of Expression of Phalaenopsis Floral ESTs (W-C Tsai et al.)
- Orchid MADS-Box Genes Controlling Floral Morphogenesis (W-C Tsai et al.)
- Pseudobulb-Specific Gene Expression of Oncidium Orchid at the Stage of Inflorescence Initiation (J Tan et al.)
- Application of Virus-induced Gene Silencing Technology in Gene Functional Validation of Orchids (H-C Lu et al.)
- Genetic Transformation as a Tool for Improvement of Orchids (Sanjaya & M-T Chan)
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無標題文件
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