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https://www.readbyqxmd.com/read/29234904/post-genomics-era-for-orchid-research
#1
REVIEW
Wen-Chieh Tsai, Anne Dievart, Chia-Chi Hsu, Yu-Yun Hsiao, Shang-Yi Chiou, Hsin Huang, Hong-Hwa Chen
Among 300,000 species in angiosperms, Orchidaceae containing 30,000 species is one of the largest families. Almost every habitats on earth have orchid plants successfully colonized, and it indicates that orchids are among the plants with significant ecological and evolutionary importance. So far, four orchid genomes have been sequenced, including Phalaenopsis equestris, Dendrobium catenatum, Dendrobium officinale, and Apostaceae shengen. Here, we review the current progress and the direction of orchid research in the post genomics era...
December 12, 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29143225/diurnal-regulation-of-the-floral-scent-emission-by-light-and-circadian-rhythm-in-the-phalaenopsis-orchids
#2
Yu-Chen Chuang, Ming-Chi Lee, Ya-Lan Chang, Wen-Huei Chen, Hong-Hwa Chen
BACKGROUND: Phalaenopsis bellina and its closely related species, P. violacea, emit linalool, geraniol and their derivatives as the predominant monoterpenes at the full-bloom stages. Geranyl diphosphate synthase (PbGDPS) is the key enzyme that converts precursors for monoterpene biosynthesis. Besides the monoterpenes being synthesized in concert with floral development stages, we noticed that the scent emission of P. bellina and P. violacea was detected mainly in the daytime. RESULTS: The monoterpenes of P...
November 15, 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29143146/screening-transferable-microsatellite-markers-across-genus-phalaenopsis-orchidaceae
#3
Ya-Zhu Ko, Huei-Chuan Shih, Chi-Chu Tsai, Hsing-Hua Ho, Pei-Chun Liao, Yu-Chung Chiang
BACKGROUND: Molecular identification based on microsatellite loci is an important technology to improve the commercial breeding of the moth orchid. There are more than 30,000 cultivars have been enrolled at the Royal Horticultural Society (RHS). In this study, genomic microsatellite primer sets were developed from Phalaenopsis aphrodite subsp. formosana to further examine the transferability of across 21 Phalaenopsis species. METHODS AND RESULTS: Twenty-eight polymorphic microsatellite markers were obtained using the magnetic bead enrichment method, with high transferability of the 21 species of the genus Phalaenopsis, especially in the subgenus Phalaenopsis...
November 15, 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28953245/potential-use-of-plant-waste-from-the-moth-orchid-phalaenopsis-sogo-yukidian-v3-as-an-antioxidant-source
#4
Truong Ngoc Minh, Phung Thi Tuyen, Do Tan Khang, Nguyen Van Quan, Pham Thi Thu Ha, Nguyen Thanh Quan, Yusuf Andriana, Fan Xinyan, Truong Mai Van, Tran Dang Khanh, Tran Dang Xuan
This research was conducted to exploit the waste of used plant parts from the widely marketed moth orchid cultivar (Phalaenopsis Sogo Yukidian "V3"). Various extracts of roots, stems, and leaves were evaluated for total phenolics, total flavonoids, and antioxidant capacity. The bound extract from stems contained the highest total phenolics (5.092 ± 0.739 mg GAE (gallic acid equivalent)/g DW (dry weight)). The maximum total flavonoids (2.218 ± 0.021 mg RE (rutin equivalent)/g DW) were found in the hexane extract of leaves...
September 27, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28916985/whole-plastid-transcriptomes-reveal-abundant-rna-editing-sites-and-differential-editing-status-in-phalaenopsis-aphrodite-subsp-formosana
#5
Ting-Chieh Chen, Yu-Chang Liu, Xuewen Wang, Chi-Hsuan Wu, Chih-Hao Huang, Ching-Chun Chang
BACKGROUND: RNA editing is a process of post-transcriptional level of gene regulation by nucleotide modification. Previously, the chloroplast DNA of Taiwan endemic moth orchid, P. aphrodite subsp. formosana was determined, and 44 RNA editing sites were identified from 24 plastid protein-coding transcripts of leaf tissue via RT-PCR and then conventional Sanger sequencing. However, the RNA editing status of whole-plastid transcripts in leaf and other distinct tissue types in moth orchids has not been addressed...
September 16, 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28798769/molecular-basis-underlying-leaf-variegation-of-a-moth-orchid-mutant-phalaenopsis-aphrodite-subsp-formosana
#6
Chi-Chu Tsai, Yu-Jen Wu, Chiou-Rong Sheue, Pei-Chun Liao, Ying-Hao Chen, Shu-Ju Li, Jian-Wei Liu, Han-Tsung Chang, Wen-Lin Liu, Ya-Zhu Ko, Yu-Chung Chiang
Leaf variegation is often the focus of plant breeding. Here, we studied a variegated mutant of Phalaenopsis aphrodite subsp. formosana, which is usually used as a parent of horticultural breeding, to understand its anatomic and genetic regulatory mechanisms in variegation. Chloroplasts with well-organized thylakoids and starch grains were found only in the mesophyll cells of green sectors but not of yellow sectors, confirming that the variegation belongs to the chlorophyll type. The two-dimensional electrophoresis and LC/MS/MS also reveal differential expressions of PsbP and PsbO between the green and yellow leaf sectors...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28795187/erratum-to-the-long-pollen-tube-journey-and-in-vitro-pollen-germination-of-phalaenopsis-orchids
#7
Jhun-Chen Chen, Su-Chiung Fang
No abstract text is available yet for this article.
August 9, 2017: Plant Reproduction
https://www.readbyqxmd.com/read/28690630/lack-of-s-rnase-based-gametophytic-self-incompatibility-in-orchids-suggests-that-this-system-evolved-after-the-monocot-eudicot-split
#8
Shan-Ce Niu, Jie Huang, Yong-Qiang Zhang, Pei-Xing Li, Guo-Qiang Zhang, Qing Xu, Li-Jun Chen, Jie-Yu Wang, Yi-Bo Luo, Zhong-Jian Liu
Self-incompatibility (SI) is found in approximately 40% of flowering plant species and at least 100 families. Although orchids belong to the largest angiosperm family, only 10% of orchid species present SI and have gametophytic SI (GSI). Furthermore, a majority (72%) of Dendrobium species, which constitute one of the largest Orchidaceae genera, show SI and have GSI. However, nothing is known about the molecular mechanism of GSI. The S-determinants of GSI have been well characterized at the molecular level in Solanaceae, Rosaceae, and Plantaginaceae, which use an S-ribonuclease (S-RNase)-based system...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28597440/efficient-and-heritable-transformation-of-phalaenopsis-orchids
#9
Hong-Xian Hsing, Yi-Jyun Lin, Chii-Gong Tong, Min-Jeng Li, Yun-Jin Chen, Swee-Suak Ko
BACKGROUND: Phalaenopsis orchid (Phal. orchid) is visually attractive and it is important economic floriculture species. Phal. orchids have many unique biological features. However, investigation of these features and validation on their biological functions are limited due to the lack of an efficient transformation method. RESULTS: We developed a heritable and efficient Agrobacterium- mediated transformation using protocorms derived from tetraploid or diploid Phal...
December 2016: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28541415/transcriptome-wide-identification-and-expression-analysis-of-divaricata-and-radialis-like-genes-of-the-mediterranean-orchid-orchis-italica
#10
Maria Carmen Valoroso, Sofia De Paolo, Giovanni Iazzetti, Serena Aceto
Bilateral symmetry of flowers is a relevant novelty that has occurred many times throughout the evolution of flowering plants. In Antirrhinum majus, establishment of flower dorso-ventral asymmetry is mainly due to interaction of TCP (CYC and DICH) and MYB (DIV, RAD, and DRIF) transcription factors. In the present study, we characterized 8 DIV-, 4 RAD-, and 2 DRIF-like genes from the transcriptome of Orchis italica, an orchid species with bilaterally symmetric and resupinate flowers. We found a similar number of DIV- and RAD-like genes within the genomes of Phalaenopsis equestris and Dendrobium catenatum orchids...
June 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28448202/current-progress-in-orchid-flowering-flower-development-research
#11
Hsin-Mei Wang, Chii-Gong Tong, Seonghoe Jang
Genetic pathways relevant to flowering of Arabidopsis are under the control of environmental cues such as day length and temperatures, and endogenous signals including phytohormones and developmental aging. However, genes and even regulatory pathways for flowering identified in crops show divergence from those of Arabidopsis and often do not have functional equivalents to Arabidopsis and/or existing species- or genus-specific regulators and show modified or novel pathways. Orchids are the largest, most highly evolved flowering plants, and form an extremely peculiar group of plants...
May 4, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28258650/concomitant-loss-of-ndh-complex-related-genes-within-chloroplast-and-nuclear-genomes-in-some-orchids
#12
Choun-Sea Lin, Jeremy J W Chen, Chi-Chou Chiu, Han C W Hsiao, Chen-Jui Yang, Xiao-Hua Jin, James Leebens-Mack, Claude W de Pamphilis, Yao-Ting Huang, Ling-Hung Yang, Wan-Jung Chang, Ling Kui, Gane Ka-Shu Wong, Jer-Ming Hu, Wen Wang, Ming-Che Shih
The chloroplast NAD(P)H dehydrogenase-like (NDH) complex consists of about 30 subunits from both the nuclear and chloroplast genomes and is ubiquitous across most land plants. In some orchids, such as Phalaenopsis equestris, Dendrobium officinale and Dendrobium catenatum, most of the 11 chloroplast genome-encoded ndh genes (cp-ndh) have been lost. Here we investigated whether functional cp-ndh genes have been completely lost in these orchids or whether they have been transferred and retained in the nuclear genome...
June 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/27975431/lc-ms-based-metabolomics-study-on-the-effects-of-light-qualitieson-phalaenopsis
#13
T H Liu, J D Wu, Yca Chang, C K Lee
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27911377/hybrid-cut-an-improved-sectioning-method-for-recalcitrant-plant-tissue-samples
#14
Tien-Kuan Chen, Hui-Ting Yang, Su-Chiung Fang, Yi-Chen Lien, Ting-Ting Yang, Swee-Suak Ko
Maintaining plant section integrity is essential for studying detailed anatomical structures at the cellular, tissue, or even organ level. However, some plant cells have rigid cell walls, tough fibers and crystals (calcium oxalate, silica, etc.), and high water content that often disrupt tissue integrity during plant tissue sectioning. This study establishes a simple Hybrid-Cut tissue sectioning method. This protocol modifies a paraffin-based sectioning technique and improves the integrity of tissue sections from different plants...
November 23, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27780838/physiological-response-of-orchids-to-mealybugs-hemiptera-pseudococcidae-infestation
#15
K Kmiec, I Kot, K Golan, E Górska-Drabik, B Lagowska, K Rubinowska, W Michalek
The harmfulness of mealybugs resulting from sucking plant sap, secreting honeydew, and transmitting plant viruses can give them the status of serious pests. This study documents the influence of Pseudococcus maritimus (Ehrhorn) and Pseudococcus longispinus (Targioni Tozzetti) infestation on alterations in selected physiological parameters of Phalaenopsis x hybridum 'Innocence'. The condition of the cytoplasmic membranes was expressed as the value of thiobarbituric acid reactive substances. We have determined changes in the activities of catalase and guaiacol peroxidase and measured the following chlorophyll fluorescence parameters: maximum quantum yield of photosystem II (Fv/Fm), effective quantum yield (Y), photochemical quenching (qP), and nonphotochemical quenching (qN)...
December 1, 2016: Journal of Economic Entomology
https://www.readbyqxmd.com/read/27673730/de-novo-transcriptome-assembly-databases-for-the-butterfly-orchid-phalaenopsis-equestris
#16
Shan-Ce Niu, Qing Xu, Guo-Qiang Zhang, Yong-Qiang Zhang, Wen-Chieh Tsai, Jui-Ling Hsu, Chieh-Kai Liang, Yi-Bo Luo, Zhong-Jian Liu
Orchids are renowned for their spectacular flowers and ecological adaptations. After the sequencing of the genome of the tropical epiphytic orchid Phalaenopsis equestris, we combined Illumina HiSeq2000 for RNA-Seq and Trinity for de novo assembly to characterize the transcriptomes for 11 diverse P. equestris tissues representing the root, stem, leaf, flower buds, column, lip, petal, sepal and three developmental stages of seeds. Our aims were to contribute to a better understanding of the molecular mechanisms driving the analysed tissue characteristics and to enrich the available data for P...
September 27, 2016: Scientific Data
https://www.readbyqxmd.com/read/27668884/expression-analysis-of-fertilization-early-embryogenesis-associated-genes-in-phalaenopsis-orchids
#17
Jhun-Chen Chen, Miao-Ju Wei, Su-Chiung Fang
One of the distinct reproductive programs in orchid species is pollination-triggered ovule development and megasporogenesis. During sexual reproduction, fertilization occurs days to months after pollination. The molecular mechanisms evolved to carry out this strategic reproductive program remain unclear. In the August issue of Plant Physiology (1) , we report comprehensive studies of comparative genome-wide gene expression in various reproductive tissues and the molecular events associated with developmental transitions unique to sexual reproduction of Phalaenopsis aphrodite...
October 2, 2016: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/27649250/phenolic-compounds-and-antioxidant-activity-of-phalaenopsis-orchid-hybrids
#18
Truong Ngoc Minh, Do Tan Khang, Phung Thi Tuyen, Luong The Minh, La Hoang Anh, Nguyen Van Quan, Pham Thi Thu Ha, Nguyen Thanh Quan, Nguyen Phu Toan, Abdelnaser Abdelghany Elzaawely, Tran Dang Xuan
Phalaenopsis spp. is the most commercially and economically important orchid, but their plant parts are often left unused, which has caused environmental problems. To date, reports on phytochemical analyses were most available on endangered and medicinal orchids. The present study was conducted to determine the total phenolics, total flavonoids, and antioxidant activity of ethanol extracts prepared from leaves and roots of six commercial hybrid Phalaenopsis spp. Leaf extracts of "Chian Xen Queen" contained the highest total phenolics with a value of 11...
September 14, 2016: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27543606/genome-wide-identification-and-characterization-of-tcp-genes-involved-in-ovule-development-of-phalaenopsis-equestris
#19
Yu-Fu Lin, You-Yi Chen, Yu-Yun Hsiao, Ching-Yu Shen, Jui-Ling Hsu, Chuan-Ming Yeh, Nobutaka Mitsuda, Masaru Ohme-Takagi, Zhong-Jian Liu, Wen-Chieh Tsai
TEOSINTE-BRANCHED/CYCLOIDEA/PCF (TCP) proteins are plant-specific transcription factors known to have a role in multiple aspects of plant growth and development at the cellular, organ and tissue levels. However, there has been no related study of TCPs in orchids. Here we identified 23 TCP genes from the genome sequence of Phalaenopsis equestris Phylogenetic analysis distinguished two homology classes of PeTCP transcription factor families: classes I and II. Class II was further divided into two subclasses, CIN and CYC/TB1...
September 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/27338813/protocorms-and-protocorm-like-bodies-are-molecularly-distinct-from-zygotic-embryonic-tissues-in-phalaenopsis-aphrodite
#20
Su-Chiung Fang, Jhun-Chen Chen, Miao-Ju Wei
The distinct reproductive program of orchids provides a unique evolutionary model with pollination-triggered ovule development and megasporogenesis, a modified embryogenesis program resulting in seeds with immature embryos, and mycorrhiza-induced seed germination. However, the molecular mechanisms that have evolved to establish these unparalleled developmental programs are largely unclear. Here, we conducted comparative studies of genome-wide gene expression of various reproductive tissues and captured the molecular events associated with distinct reproductive programs in Phalaenopsis aphrodite Importantly, our data provide evidence to demonstrate that protocorm-like body (PLB) regeneration (the clonal regeneration practice used in the orchid industry) does not follow the embryogenesis program...
August 2016: Plant Physiology
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