Orchids research papers
RanunculalesPetroselinum crispum Mill.
In addition, a cDNA library has been constructed from scented P. In this article, we have reviewed the scientific activities in orchid research including the status of genomics, transformation technology, flowering regulation and molecular regulatory mechanism of floral development, scent production and color presentation.
LamialesPunica granatum L. Thus, the improvement of traits, such as flower shape, color, fragrance, longevity, architecture, and disease and stress resistance, and creation of novel variations are important to increase the commercial value of orchids.
Cool nights are not required for Oncidium to produce flowers. PoalesT. Advanced Search Abstract Orchidaceae constitute one of the largest families of angiosperms.
Articles on orchids
A comparison of nucleotide substitutions between P. Unlike Phalaenopsis, the regulation of Oncidium flowering is more via the autonomous pathway, and it is tightly linked to the nutrition status of the pseudobulb. Phytopatological properties of symbiotic Rhizoctonia solani strains associated to orchids The mycobiota of the Orchidarium of ELTE Botanical Garden Budapest has been studied applying aerobiological methods and isolating of tissue samples taken from 92 individuals of sixty orchid species. Of note, their transcripts are accumulated during vernalization and this process is likely to be FLC-independent. PLBs pre-treated with 0. Gower Ramsey Wang et al. The results also indicated that cells with a higher ploidy level have lower transition rates and less potential for further endoreduplication, and endoreduplication stops when the flower fresh weight stops increasing Lee et al. Flowering regulation Flowering mechanism in Phalaenopsis and Oncidium The control of flowering time has been widely studied by genetic analyses in several plant species, especially Arabidopsis, and a genetic network including four main pathways—photoperiod, vernalization, autonomous and gibberellinss Blazquez et al. Li and co-workers developed a highly efficient protocol for efficiently producing transgenic plants of O. A similar strategy was adopted for Vanda Mimi Palmer principally to mine any potential fragrance-related EST-SSRs as markers in the identification of fragrant vandaceous orchids endemic to Malaysia Teh et al. The host plants clustered into two groups, and their taxonomic position had no role in this respect.
PoalesEleusine coracana Gaertn. Acta Agraria Debreceniensis, Ghorbani, H. Disease resistance Maintaining or increasing the yield of orchid variants through classical breeding is difficult because productivity is limited by infection of the viral and bacterial pathogens that cause orchid diseases, particularly by Odontoglossum ringspot virus ORSVCymMV and Erwinia carotovora Chia et al.
To study gene expression in Phalaenopsis reproductive organs, a cDNA library was constructed from mature flower buds of P. Microsynteny analysis revealed that more of the BESs mapped to the whole-genome sequences of poplar than to those of grape or Arabidopsis, and even fewer to the rice genome.
Gower Ramsey Wang et al. Genomics Karyotypes of Phalaenopsis orchids A better understanding of the karyotypes and DNA contents of orchid will aid in the development of new cultivars of orchids. In this introductory review, we give an overview of the research activities in orchid biology and biotechnology, including the status of genomics, transformation technology, flowering regulation, molecular regulatory mechanisms of floral development, scent production and color presentation. Molecular mechanisms of flowering initiation in orchids Unlike Arabidopsis, in which research on flowering time has been done by examining the phenotypes of mutant plants, the only available strategy to study flowering time in orchid is to search homolog genes identified in other species and to overexpress or silence these genes to examine the phenotype changes. Most of these repetitive DNA sequences were gypsy- and copia-like retrotransposons In addition, a cDNA library has been constructed from scented P. The promotion of flowering by BA application seems to suggest that cytokinins play a part in regulating the inflorescence initiation of Doritaenopsis and Phalaenopsis, but its promotion depends on certain conditions, and BA application is not an effective replacement for an inductive low temperature Blanchard and Runkle Of note, their transcripts are accumulated during vernalization and this process is likely to be FLC-independent.
On the basis of the above information, the chloroplast genome of O.
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