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https://www.readbyqxmd.com/read/27800617/contribution-of-constitutive-characteristics-of-lipids-and-phenolics-in-roots-of-tree-species-in-myrtales-to-aluminum-tolerance
#1
Eriko Maejima, Mitsuru Osaki, Tadao Wagatsuma, Toshihiro Watanabe
High aluminum (Al) concentration in soil solution is the most important factor restricting plant growth in acidic soils. However, various plant species naturally grow in such soils. Generally, they are highly tolerant to Al, but organic acid exudation, the most common Al tolerance mechanism, cannot explain their tolerance. Lower phospholipid and higher sterol proportions in root plasma membrane enhance Al tolerance. Other cellular components, such as cell walls and phenolics, may also be involved in Al tolerance mechanisms...
November 1, 2016: Physiologia Plantarum
https://www.readbyqxmd.com/read/27417081/antifilarial-and-antibiotic-activities-of-methanolic-extracts-of-melaleuca-cajuputi-flowers
#2
Nazeh M Al-Abd, Zurainee Mohamed Nor, Marzida Mansor, M S Hasan, Mustafa Kassim
We evaluated the activity of methanolic extracts of Melaleuca cajuputi flowers against the filarial worm Brugia pahangi and its bacterial endosymbiont Wolbachia. Anti-Wolbachia activity was measured in worms and in Aedes albopictus Aa23 cells by PCR, electron microscopy, and other biological assays. In particular, microfilarial release, worm motility, and viability were determined. M. cajuputi flower extracts were found to significantly reduce Wolbachia endosymbionts in Aa23 cells, Wolbachia surface protein, and microfilarial release, as well as the viability and motility of adult worms...
June 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/26497742/antioxidant-antibacterial-activity-and-phytochemical-characterization-of-melaleuca-cajuputi-extract
#3
Nazeh M Al-Abd, Zurainee Mohamed Nor, Marzida Mansor, Fadzly Azhar, M S Hasan, Mustafa Kassim
BACKGROUND: The threat posed by drug-resistant pathogens has resulted in the increasing momentum in research and development for effective alternative medications. The antioxidant and antibacterial properties of phytochemical extracts makes them attractive alternative complementary medicines. Therefore, this study evaluated the phytochemical constituents of Melaleuca cajuputi flower and leaf (GF and GL, respectively) extracts and their antioxidant and antibacterial activities. METHODS: Radical scavenging capacity of the extracts was estimated using 2,2-diphenyl-2-picrylhydrazyl and Fe(2+)-chelating activity...
2015: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/26203884/efficacy-of-commercially-available-products-against-gyrodactylus-turnbulli-infections-on-guppies-poecilia-reticulata
#4
Bettina Schelkle, Donna Snellgrove, Lewis L Jones, Jo Cable
The demand for ornamental fish has led to a steep rise in aquaculture for the hobbyist trade, promoting the emergence, persistence and spread of various infectious diseases. Complete control of disease outbreaks with antibiotics and chemical-based medicines is rare, but plant compounds may herald potential alternatives effective against a range of pathogens. Melafix® and Pimafix® are formulated with the essential oils cajuput (Melaleuca cajuputi) and West Indian bay (Pimenta racemosa) and are marketed against bacterial and fungal infections, respectively...
July 23, 2015: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/26191081/an-assessment-of-the-carbon-stocks-and-sodicity-tolerance-of-disturbed-melaleuca-forests-in-southern-vietnam
#5
Da B Tran, Tho V Hoang, Paul Dargusch
BACKGROUND: In the lower Mekong Basin and coastal zones of Southern Vietnam, forests dominated by the genus Melaleuca have two notable features: most have been substantially disturbed by human activity and can now be considered as degraded forests; and most are subject to acute pressures from climate change, particularly in regards to changes in the hydrological and sodicity properties of forest soil. RESULTS: Data was collected and analyzed from five typical Melaleuca stands including: (1) primary Melaleuca forests on sandy soil (VS1); (2) regenerating Melaleuca forests on sandy soil (VS2); (3) degraded secondary Melaleuca forests on clay soil with peat (VS3); (4) regenerating Melaleuca forests on clay soil with peat (VS4); and (5) regenerating Melaleuca forests on clay soil without peat (VS5)...
December 2015: Carbon Balance and Management
https://www.readbyqxmd.com/read/25763499/proportion-of-phospholipids-in-the-plasma-membrane-is-an-important-factor-in-al-tolerance
#6
Eriko Maejima, Toshihiro Watanabe
The negative charge on the plasma membrane (PM) is mainly derived from the phosphate group of phospholipids. One of the mechanisms of aluminum (Al) toxicity is to increase the PM permeability of root cells by binding to the negative sites on the PM. Thus, PM with a higher proportion of phospholipids could be more susceptible to Al toxicity. In our previous study, we showed that tolerance to Al and low-calcium in rice was enhanced by decreasing the proportion of phospholipids in root cells. Both Melastoma malabathricum L...
2014: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/25435614/in-vitro-screening-of-malaysian-honey-from-different-floral-sources-for-antibacterial-activity-on-human-pathogenic-bacteria
#7
Wen-Jie Ng, Khai-Wei Ken, Roshani-Vijaya Kumar, Hemamalani Gunasagaran, Vanaysha Chandramogan, Ying-Yee Lee
BACKGROUND: Different researches on therapeutic effects of honey have been conducted in different regions; however the study on the potential antibacterial activity of Malaysian honey is still limited. In this study, antibacterial activities of different monofloral honey samples were tested against several common human pathogenic bacteria. MATERIALS AND METHODS: The well-diffusion method, minimum inhibitory concentrations (MIC) and minimum bactericidal concentration (MBC) techniques were employed to investigate the putative antibacterial activity of Malaysian monofloral honey from Koompassia excelsa (Becc...
2014: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/24844783/proportion-of-phospholipids-in-the-plasma-membrane-is-an-important-factor-in-al-tolerance
#8
Eriko Maejima, Toshihiro Watanabe
The negative charge on the plasma membrane (PM) is mainly derived from the phosphate group of phospholipids. One of the mechanisms of aluminum (Al) toxicity is to increase the PM permeability of root cells by binding to the negative sites on the PM. Thus, PM with a higher proportion of phospholipids could be more susceptible to Al toxicity. In our previous study, we showed that tolerance to Al and low-calcium in rice was enhanced by decreasing the proportion of phospholipids in root cells. Both Melastoma malabathricum L...
May 20, 2014: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/24646690/steady-sucrose-degradation-is-a-prerequisite-for-tolerance-to-root-hypoxia
#9
Satoshi Kogawara, Takashi Yamanoshita, Mariko Norisada, Katsumi Kojima
We investigated the role of glycolysis and sucrolysis in the difference in tolerance to root hypoxia between two Myrtaceae tree species, Melaleuca cajuputi (which shows superior tolerance to root hypoxia) and Eucalyptus camaldulensis (which does not). Analysis of the adenylate energy charge (AEC) in roots subjected to a 4-day hypoxic treatment (HT) in hydroponic culture revealed that the interspecies difference in tolerance corresponds to the ability to maintain energy status under root hypoxia: AEC was reduced by HT in E...
March 2014: Tree Physiology
https://www.readbyqxmd.com/read/23293776/evaluation-of-melaleuca-cajuputi-family-myrtaceae-essential-oil-in-aerosol-spray-cans-against-dengue-vectors-in-low-cost-housing-flats
#10
A Abu Bakar, S Sulaiman, B Omar, R Mat Ali
BACKGROUND: Melaleuca cajuputi essential oil in aerosol spray was evaluated against the dengue vectors Aedes aegypti and Ae. albopictus at low cost housing flats in Section 10, Setapak, Kuala Lumpur, Malaysia. METHODS: ESSENTIAL OIL IN AEROSOL VIZ: 5% and 10% of concentrations were sprayed for 5 seconds each towards hung mosquitoes in 5 cylindrical net cages. Aerosol weights were recorded before and after spraying to determine discharge rates. Knockdown and mortality number were observed and compared to MS standard aerosol which contain 0...
2012: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/22424051/a-new-chromone-from-the-leaves-of-melaleuca-cajuputi-powell
#11
Suthida Rattanaburi, Wilawan Mahabusarakam, Souwalak Phongpaichit, Anthony R Carroll
A new chromone, 5,7-dihydroxy-2 -(hydroxymethyl)-6,8-dimethyl-chromen-4-one, named melachromone, together with 12 known compounds, including chromones, anthraquinone, flavonoids, flavonoid glycosides, benzene derivatives, ellagic acids and terpenes, were isolated from the leaves of Melaleuca cajuputi Powell. Their structures were characterised by spectroscopic methods.
2013: Natural Product Research
https://www.readbyqxmd.com/read/17124986/surveys-for-natural-host-plants-of-mansonia-mosquitoes-inhabiting-toh-daeng-peat-swamp-forest-narathiwat-province-thailand
#12
Chamnarn Apiwathnasorn, Yudthana Samung, Samrerng Prummongkol, Achara Asavanich, Narumon Komalamisra
Surveys were carried out monthly from April-October 2002 to examine 68 sampling sites around "Toh Daeng" peat swamp forest in Narathiwat Province, Thailand, of which 38 were known Mansonia-positive habitats and 30 were Mansonia-negative sites. The present larval surveys were qualitative owing to features of the host plants (location, distribution, and abundance), difficulties in locating and selecting the host plants in the swamp forest, and time constraints. Twenty attempts were made for each species for larvae...
March 2006: Southeast Asian Journal of Tropical Medicine and Public Health
https://www.readbyqxmd.com/read/16877326/photosynthesis-and-photoassimilate-transport-during-root-hypoxia-in-melaleuca-cajuputi-a-flood-tolerant-species-and-in-eucalyptus-camaldulensis-a-moderately-flood-tolerant-species
#13
Satoshi Kogawara, Takashi Yamanoshita, Mariko Norisada, Masaya Masumori, Katsumi Kojima
We compared the photosynthetic and photoassimilate transport responses of Melaleuca cajuputi Powell seedlings to root hypoxia with those of Eucalyptus camaldulensis Dehnh. Control and hypoxia treated roots were maintained in a nutrient solution through which air or nitrogen was bubbled. Under root hypoxic conditions, seedlings of M. cajuputi, a flood-tolerant species, maintained height growth, whereas seedlings of E. camaldulensis, a moderately flood-tolerant species, showed markedly decreased height growth compared with control seedlings...
November 2006: Tree Physiology
https://www.readbyqxmd.com/read/12975128/role-of-exudation-of-organic-acids-and-phosphate-in-aluminum-tolerance-of-four-tropical-woody-species
#14
Nguyen Tran Nguyen, Kazuo Nakabayashi, Julian Thompson, Kounosuke Fujita
Responses of Melaleuca leucadendra (L.) L., Melaleuca cajuputi Powell, Acacia auriculiformis A. Cunn. ex Benth. and Eucalyptus camaldulensis Dehnh. to aluminum (Al) toxicity at low pH are poorly understood. We investigated effects of low pH and exudation of ligands by roots on Al tolerance of these species. Seedlings were grown hydroponically in nutrient solutions at pH 4.2 or 3.5 containing AlCl3 at concentrations ranging from 0 to 4 mM Al. The presence of 4 mM Al at pH 3.5 depressed growth in all species...
October 2003: Tree Physiology
https://www.readbyqxmd.com/read/12906350/nutritional-characteristics-of-the-leaves-of-native-plants-growing-in-adverse-soils-of-humid-tropical-lowlands
#15
Mitsuru Osaki, Toshihiro Watanabe, Tetsuya Ishizawa, Chairatna Nilnond, Tanit Nuyim, Takuro Shinano, Masaru Urayama, Sehat Jaya Tuah
Acid sulfate, peat, sandy podzolic, and saline soils are widely distributed in the lowlands of Thailand and Malaysia. The nutrient concentrations in the leaves of plants grown in these type of soils were studied with the aim of developing a nutritional strategy for adapting to such problem soils. In sago and oil palms that were well-adapted to peat soil, the N, P, and K concentrations were the same in the mature leaves, while the Ca, Mg, Na, and Fe concentrations were higher in the mature leaves of the oil palm than of the sago palm...
2003: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/12696917/near-infrared-spectroscopy-for-cost-effective-screening-of-foliar-oil-characteristics-in-a-melaleuca-cajuputi-breeding-population
#16
Laurence R Schimleck, John C Doran, Anto Rimbawanto
The identification of Melaleuca cajuputi leaf samples (trees) that demonstrate enhanced oil characteristics using near infrared (NIR) spectroscopy is described. Leaf samples from an unthinned M. cajuputi seedling seed orchard in Indonesia were collected and air-dried, and their 1,8-cineole content and oil concentrations were determined. NIR spectra of the leaves were obtained, and calibrations for 1,8-cineole content and oil concentration were developed using spectra that had been selected using spectral features; that is, no knowledge of 1,8-cineole content or oil concentration was used to select the calibration samples...
April 23, 2003: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/10792711/development-of-polymorphic-microsatellite-markers-in-a-tropical-tree-species-melaleuca-cajuputi-myrtaceae
#17
M Miwa, R Tanaka, M Shinone, K Kojima, T Hogetsu
No abstract text is available yet for this article.
May 2000: Molecular Ecology
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