Results 161 to 170 of about 42,598 (185)
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Structural organization in palm stems of Roystonea regia and Archontophoenix alexandrae
IAWA Journal, 2020Abstract Having a high stature subjects palms to the same constraints as trees, but the lack of cambial growth urges them to adopt a different strategy. We aimed to characterize the spatial organization of xylem tissues and their potential functions in two palm stems: a 30 cm diameter at breast height (DBH) royal palm (Roystonea regia) and a 12 cm DBH ...
Amy Ny Aina Aritsara, Kun-Fang Cao
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Roystonea regia a monocotyledonous tree, bears rhizobial root nodules
Folia Microbiologica, 1997The first instance of a monocotyledonous treeRoystonea regia (royal palm) bearing root nodules is reported. They are formed by a Gram-negative bacterium which was tentatively identified asRhizobium sp. The nodules are formed on younger roots of the tree mostly in the rainy season. Younger plants also become nodulated.
P. S. Basu, A. C. Ghosh, T. K. Dangar
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A Potyvirus Isolated From Cuban Royal Palm (Roystonea Regia) in Queensland.
Australasian Plant Pathology, 1993Chlorotic ringspot symptoms were noted on Cuban royal palms (Roystonea regia) from two locations in south-east Queensland. A virus, provisionally named Roystonea palm virus (RoPV), was isolated from these plants. It was mechanically transmitted to Chenopodium amaranticolor, C. quinoa, Nicotiana benthamiana, N.
JE Thomas +3 more
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Oral Subchronic Toxicity of a Lipid Extract fromRoystonea regiaFruits in Mice
Drug and Chemical Toxicology, 2008D-004 is a lipid extract of royal palm (Rosytonea regia) fruits that prevents prostate hyperplasia induced with testosterone in rodents. Previous studies have shown no D-004-related toxicity in rats, but no study in mice had been reported. D-004 (500, 1000, and 2000 mg/kg) was evaluated in a subchronic (eight weeks) study in NMRI mice.
Adriadne, Gutiérrez +9 more
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World Journal of Applied Science & Technology, 2023
Roystonea regia and Ptychosperma macarthurii are exotic palm species widely grown in Nigeria as ornamentals. The kernels of R. regia and P. macarthurii were subjected to amino acids, fatty acids, and mineral elements analyses in this study. Glutamic acid (13. 64 and 14.00 g/100 g), aspartic acid (9.72 and 9.50 g/100 g), arginine (8.68 and 7.49 g/100 g),
Essien, E.E. +3 more
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Roystonea regia and Ptychosperma macarthurii are exotic palm species widely grown in Nigeria as ornamentals. The kernels of R. regia and P. macarthurii were subjected to amino acids, fatty acids, and mineral elements analyses in this study. Glutamic acid (13. 64 and 14.00 g/100 g), aspartic acid (9.72 and 9.50 g/100 g), arginine (8.68 and 7.49 g/100 g),
Essien, E.E. +3 more
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The Effect of Alkali Treatment on Dielectric Properties ofRoystonea regia/Epoxy Composites
International Journal of Polymer Analysis and Characterization, 2011The present study investigates the electrical conductivity and dielectric properties of untreated and alkali-treated Roystonea regia natural fiber–reinforced epoxy composites at different frequencies along with compression and water absorption properties. Fiber was treated with 5% NaOH and characterized by chemical, thermogravimetric, tensile test, and
Govardhan Goud, R. N. Rao
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Peroxidase from leaves of royal palm tree Roystonea regia: purification and some properties
Plant Science, 2001Abstract Screening of tropical plants demonstrated high peroxidase activity in leaves of some species of palms. Using the leaves of royal palm Roystonea regia as a source, the peroxidase has been isolated to homogeneity. The enzyme purification steps included homogenization, (NH 4 ) 2 SO 4 precipitation, extraction of palm leaf colored compounds ...
I.Yu. Sakharov +4 more
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Unveiling root nodulation in Tribulus terrestris and Roystonea regia via metagenomics analysis
Molecular Genetics and GenomicsRoot nodule symbiosis is traditionally recognized in the Fabales, Fagales, Cucurbitales, and Rosales orders within the Rosid I clade of angiosperms. However, ambiguous root nodule formation has been reported in Zygophyllaceae and Roystonea regia (Arecaceae), although a detailed analysis has yet to be conducted.
Saleh Rahimlou +6 more
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One year oral Toxicity of D-004, a lipid extract from Roystonea regia fruits, in Sprague Dawley rats
Food and Chemical Toxicology, 2010D-004, a lipid extract of royal palm (Roystonea regia) fruits that contains a reproducible mixture of fatty acids, has been shown to prevent testosterone and phenylephrine-induced prostate hyperplasia in rodents. This study investigated the long-term oral toxicity of D-004 in rats.
A, Gutiérrez +12 more
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Indole acetic acid and its metabolism in root nodules of a monocotyledonous tree Roystonea regia.
Current microbiology, 1998A monocotyledonous tree, Roystonea regia, was found to bear root nodules. The root nodules contained a high amount (16.9 microg/g fresh mass) of indole acetic acid (IAA). A big tryptophan pool (1555.1 microg/g fresh mass) was found in the root nodules, which might serve as a source of IAA production. The presence of IAA-metabolizing enzymes IAA oxidase
P S, Basu, A C, Ghosh
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