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ophrys aymoninii/atrophie
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Stable isotope cellular imaging reveals that both live and degenerating fungal pelotons transfer carbon and nitrogen to orchid protocorms.
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The objective of this study was to elucidate the transfer of nutrient elements in orchid symbiotic protocorms at the cellular level by imaging of stable isotope tracers. We address the long-standing question of whether nutrients move by transport across the symbiotic interface or solely by lysis of
Increased Expression of 9-Cis-Epoxycarotenoid Dioxygenase, PtNCED1, Associated With Inhibited Seed Germination in a Terrestrial Orchid, Phaius tankervilliae.
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The phytohormone abscisic acid (ABA) is involved in regulating seed dormancy and germination. A crucial step of ABA biosynthesis in higher plants is the oxidative cleavage of cis-epoxycarotenoids by 9-cis-epoxycarotenoid dioxygenase (NCED). Seed development in orchids is unusual because the embryos
Collecting near mature and immature orchid seeds for ex situ conservation: 'in vitro collecting' as a case study.
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BACKGROUND
Lack of phenological information and efficient collecting methods are considered impediments for orchid seed collecting. This leads to opportunistic collecting as part of general seed collecting schedules that may last few weeks especially in remote areas. The study explored the
Flower-specific KNOX phenotype in the orchid Dactylorhiza fuchsii.
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The KNOTTED1-like homeobox (KNOX) genes are best known for maintaining a pluripotent stem-cell population in the shoot apical meristem that underlies indeterminate vegetative growth, allowing plants to adapt their development to suit the prevailing environmental conditions. More recently, the
Comparative transcriptome analysis provides global insight into gene expression differences between two orchid cultivars.
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The orchids GL and YL are two cultivars of Cymbidium longibracteatum. YL displays an obviously yellowing rhizome and yellow leaves, while GL ('Longchangsu') shows dark green leaves and greenish rhizome. But the molecular mechanism for the differences between the two cultivars is poorly understood.
First Report of Carnation mottle virus in Phalaenopsis Orchids.
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In November 2003, two Phalaenopsis orchids from two different nurseries with symptoms of chlorotic rings on leaves were observed in Changhua County of central Taiwan. Symptomatic plants were collected and examined for the presence of viruses. Electron microscopic examination of ultrathin sections of
Differential accumulation of β-carotene and tissue specific expression of phytoene synthase (MaPsy) gene in banana (Musa sp) cultivars.
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An experiment was conducted with twelve major Indian banana cultivars to investigate the molecular relationship between the differential accumulation of β-carotene in peel and pulp of the banana fruit and carotenoid biosynthetic pathway genes. The high performance liquid chromatography showed that
Effects of orchids (Orchis anatolica) on reproductive function and fertility in adult male mice.
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Aims: The aim of the present study was to determine the effect of orchid bulbs on the reproductive system of male albino mice. Methods: Orchid bulb extract was fed to 20 male albino mice (5 g/mouse/day) for 35 days and compared with a similar number of mice as controls. Total testicular germ cell
Gametophyte and embryonic ontogeny: understanding the reproductive calendar of Cypripedium japonicum Thunb. (Cypripedoideae, Orchidaceae), a lady's slipper orchid endemic to East Asia
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Background: The genus Cypripedium L. is one of the five genera of the subfamily Cypripedioideae, members of which are commonly known as lady's slipper orchids. Cypripedium japonicum is a perennial herb native to East Asia, specifically
Do mitochondria in Dendrobium petal mesophyll cells form vacuole-like vesicles?
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Using transmission electron microscopy, we investigated the ultrastructure of mitochondria in petal mesophyll cells of the orchid Dendrobium cv. Lucky Duan, from the time of floral opening to visible petal senescence. Cells close to the vascular bundle contained many mitochondria, some of which
Sperm movement during double fertilization of a flowering plant, Phaius tankervilliae.
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Fertilization in flowering plants involves the fusion of one sperm with the egg cell and a second sperm with the central cell. In the Nun orchid, Phaius tankervilliae (Aiton) Bl., the pollen tube deposits two sperms in the "cytoplasmic mass" of the degenerating synergid. Initially both sperms stay
Mycorrhizal status of plant species in the Chaco Serrano Woodland from central Argentina.
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We examined the mycorrhizal type of 128 plant species in two patches of native vegetation of the Chaco Serrano Woodland, central Argentina, the largest dry forest area in South America. Of the 128 plant species investigated (belonging to 111 genera in 53 families), 114 were colonized by arbuscular
Synthesis and mechanistic studies of a novel homoisoflavanone inhibitor of endothelial cell growth.
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Preventing pathological ocular angiogenesis is key to treating retinopathy of prematurity, diabetic retinopathy and age-related macular degeneration. At present there is no small molecule drug on the market to target this process and hence there is a pressing need for developing novel small
Variations in Mineral/heavy metals profiling and preventive role of trichomes in Peach Fruits treated with CaC2
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Background: Phytonutrients in peach fruits have health promoting antioxidants against various chronic diseases. However, there is no extensive data to show the nutritional values of Local peach cultivars after post-harvest
Scuticociliatosis caused by Uronema sp. in ten different ornamental aquarium reef fish in Brazil.
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Scuticociliatosis, caused by an opportunistic ciliate protozoan, is responsible for significant economic losses in marine ornamental fish. This study reports the occurrence of Uronema spp., parasitizing ten species of marine reef fish at an ornamental fish wholesaler: Blue green damselfish (Chromis
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