Abstract
Orchidaceae is one of the largest families of flowering plants with about 30,000 species. Orchid flowers are highly valued because of their quite distinct and pretty features like spectacular floral shape, color, and elaborate adaptations to pollinators. Among the numerous species, the Phalaenopsis genus of about 66 species derived hybrids is the popular potted ornamental plant. Nowadays, there are more commercial demands for the various Phalaenopsis hybrids with diverse flower colors, fragrance, disease-free, environmentally protected with long-lasting blooming. To produce Phalaenopsis hybrids with diverse features, the whole-genome organization analysis plays a key role to deploy suitable strategies. Genome sequencing has been developed as an important discipline in the plant sciences. During the past decade, remarkable advancement has been made in next-generation sequencing technologies, including 454 pyrosequencing, Illumina/Solexa technology, and sequencing by oligo ligation detection. To accelerate genetic improvement through molecular breeding, wide-ranging analyses of genes and the genome of Phalaenopsis have been conducted using advanced technologies. Whole-genome and transcriptomes were sequenced, assembled, and annotated in (wild-type and peloric mutant plants) P. equestris, P. aphrodite and hybrids. The chloroplast DNA sequence information of P. equestris and P. aphrodite were obtained. Various RNA-Seq reads were produced from flowers and temperature treated parts of Phalaenopsis orchids (wild-type and peloric mutant plants) and P. bellina. From these produced genome sequences, various databases were constructed for the Phalaenopsis genome. We expect Phalaenopsis genome sequences, microRNAs, expressed sequence tags, simple sequence repeats, linkage maps, and constructed databases will deliver a valued source for basic and applied research, including comparative genomic analysis, developmental studies and molecular breeding on Phalaenopsis.
Abbreviations
- Myr:
-
Million years
- CAM:
-
Crassulacean acid metabolism
- NGS:
-
Next-generation sequencing
- SOLiD:
-
Sequencing by oligo ligation detection
- PGM:
-
Personal genome machine
- NCBI:
-
National Center for Biotechnology Information
- TCV:
-
Total chromosome volume
- CH:
-
Constitutive heterochromatin
- ESTs:
-
Expressed sequence tags
- BESs:
-
Bacterial artificial chromosome end sequences
- TEs:
-
Transposable elements
- LTRs:
-
Long terminal repeats
- DEGs:
-
Differentially expressed genes
- GO:
-
Gene Ontology
- KEGG:
-
Kyoto Encyclopedia of Genes and Genomes
- FISH:
-
Fluorescent in situ hybridization
- sRNA:
-
small RNA
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Acknowledgements
The works by authors described in this chapter were supported by grants from the Ministry of Science and Technology (MOST 106-2321-B-020-002) and Agriculture and Food Agency, Council of Agriculture, Taiwan (107AS-7.6.3-FD-Z2, 107AS-7.5.3-FD-Z1 and 108AS-7.5.2-FD-Z1) to FCC.
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Viswanath, K.K., Huang, JZ., Chin, SW., Chen, FC. (2021). Phalaenopsis Genome and Transcriptome Exploitation and Its Application for Breeding. In: Chen, FC., Chin, SW. (eds) The Orchid Genome. Compendium of Plant Genomes. Springer, Cham. https://doi.org/10.1007/978-3-030-66826-6_4
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