Myrtaceae
Psidium
Eugenia
Eucalyptus
Leptospermum
Aspergillus ochraceus
Oils, Volatile
Plant Extracts
Protection by isoprene against singlet oxygen in leaves. (1/49)
Isoprene (2-methyl-1,3-butadiene) protection against effects of singlet oxygen was investigated in Myrtus communis and Rhamnus alaternus. In M. communis, singlet oxygen produced in the leaves by Rose Bengal (RB) led to a 65% decrease in net assimilation rates within 3 h, whereas isoprene emission rates showed either a 30% decrease at ambient CO2 concentrations or a 70% increase under high CO2. In both cases, these changes led to an increase in calculated internal isoprene concentrations. The isoprene protection effect was directly demonstrated by fumigation of young (non-emitting) leaves, treated with RB or bromoxynil (simulating photoinhibition). There was 42% and 29% reduction in the damage to net assimilation compared with non-fumigated leaves for RB or bromoxynil, respectively. In R. alaternus, similar effects of RB on net assimilation were observed, and additional fluorescence measurements showed a significantly smaller decrease in Fv/Fm in isoprene-fumigated young leaves treated with RB (from 0.78 to 0.52), compared with non-fumigated leaves (from 0.77 to 0.27). The internal isoprene concentrations used in this study and possible rate of 1O2 production in leaves indicate that the protective effects observed should be beneficial also under natural conditions. (+info)Oviposition of the invasive two-spotted leafhopper on an endemic tree: effects of an alien weed, foliar pubescence, and habitat humidity. (2/49)
The two-spotted leafhopper, Sophonia rufofascia (Kuoh and Kuoh), is an exotic pest from South-East Asia that attacks a wide variety of plant species in Hawaii. Myrica faya Aiton is an aggressive exotic weed that displaces and excludes native plants in Hawaiian forests. It has been argued that because of the high nutritional quality of its foliage, M. faya might facilitate leafhopper invasion of native Hawaiian ecosystems that were originally dominated by the endemic tree Metrosideros polymorpha (Gaudichaud). In the present study, we quantified suitability of M. faya and M. polymorpha as ovipositional hosts for S. rufofascia. Overall, leafhoppers preferred to deposit their eggs into the foliage of M. faya. M. faya presence in the area did not affect leafhopper oviposition on M. polymorpha. Foliar pubescence provided good protection of hirsute morphotypes of M. polymorpha. At the same time, glabrous M. polymorpha morphotypes were quite suitable for leafhopper oviposition. There was no difference in the abundance of leafhopper eggs along a precipitation gradient. Our results confirm that invasion of native Hawaiian forests by the weed M. faya will facilitate their invasion by S. rufofascia. Because of the broad host range characteristic of the two-spotted leafhopper, this build-up may adversely affect a number of endemic plant species growing in native forests. (+info)Multiple Mantel tests and isolation-by-distance, taking into account long-term historical divergence. (3/49)
Mantel tests of matrix correspondence have been widely used in population genetics to examine microevolutionary processes, such as isolation-by-distance (IBD). We used partial and multiple Mantel tests to simultaneously test long-term historical effects and current divergence and equilibrium processes, such as IBD. We used these procedures to calculate genetic divergence among Eugenia dysenterica (Myrtaceae) populations in Central Brazil. The Nei's genetic distances between pairs of local populations were strongly correlated with geographic distances, suggesting an IBD process, but field observations and the geographic distribution of the samples suggest that populations may have been subjected to more complex evolutionary processes of genetic divergence. Partial Mantel regression was used to partition the effects of geographic structure and long-term divergence associated with a possible historical barrier. The R(2) of the model with both effects was 73.3%, and after the partition 21.9% of the variation in the genetic distances could be attributed to long-term historical divergence alone, whereas only 1.5% of the variation in genetic distances could be attributed to IBD. As expected, there was a large overlap between these processes when explaining genetic divergence, so it was not possible to entirely partition divergence between historical and contemporary processes. (+info)Constituents of stem bark of Callistemon rigidus showing inhibitory effects on mouse alpha-amylase activity. (4/49)
From stem bark of Callistemon rigidus (Myrtaceae), piceatannol and scirpusin B were isolated as components that exhibit inhibitory effects on alpha-amylase activity in isolated mouse plasma. In particular, scirpusin B also inhibited alpha-amylase in mouse gastrointestinal tract. Thus, we expect the depressive effect on the elevation of postprandial blood glucose may be a new medicinal use of this compound as well as the plant itself. (+info)New species of Mycosphaerella from Myrtaceae in plantations and native forests in eastern Australia. (5/49)
The majority of Mycosphaerella species from eucalypts (Eucalyptus, Corymbia and Angophora) in Australia have been recorded only from trees growing in plantations. This illustrates a bias in research in the past two decades toward commercial enterprise, and it emphasises a lack of understanding of the occurrence of these important fungi under natural conditions. Surveys of foliar fungi in native forests in eastern Australia, as well as adjacent plantations, thus have been initiated in recent years. In this study we describe four new species of Mycosphaerella from Eucalyptus spp. as well as other Myrtaceae. Mycosphaerella tumulosa sp. nov. (anamorph: Pseudocercospora sp.) was found on more than seven species of Eucalyptus and Corymbia in native forests and plantations in northeastern New South Wales and southeastern Queensland and appears to be relatively common, although not damaging to these trees. Mycosphaerella multiseptata sp. nov. was recorded from several locations on species of Angophora in native forests and amenity plantings. Mycosphaerella pseudovespa sp. nov. was found in one location in native forest on E. biturbinata. The first species of Mycosphaerella to be described from Syncarpia, M. syncarpiae sp. nov., was found in native forests in numerous locations from Sydney through to northeastern New South Wales and appears to be relatively common. (+info)Further antinociceptive properties of extracts and phenolic compounds from Plinia glomerata (Myrtaceae) leaves. (6/49)
This study describes the antinociceptive activity of extracts (methanolic (ME) and acetonic (AE)) and two phenolic compounds, 3,4,3'-trimethoxyflavellagic acid (1) and 3,4,3'-trimethoxy flavellagic acid 4'-O-glucoside (2), from Plinia glomerata leaves, against different experimental models of pain in mice. When evaluated against writhing test, by i.p. route, ME and AE presented calculated ID(50) values (and respective confidence interval) of 3.28 (1.63-6.61) and 24.79 (16.57-37.09) mg/kg, respectively. Given by the oral route at 500 mg/kg, AE and ME extracts inhibited the abdominal constrictions by 60.5% and 35.3%, respectively. In the formalin test (10 mg/kg, i.p.), AE inhibited both phases of pain (45.6% in the first phase; 99.8% in the second phase) whereas ME inhibited 47.8% the first phase, and 92.6% the second phase. In the capsaicin test both extracts showed activity, with calculated ID(50) values of 6.56 (5.69-7.56) and 7.68 (4.94-11.93) mg/kg for AE and ME, respectively. When evaluated against the hot-plate test, both extracts demonstrated activity, but only in high doses. Compound 2, when evaluated against the formalin test (10 mg/kg, i.p.), inhibited both phases of pain (77.6%, first phase; 62%, second phase) whereas 1 inhibited only the first phase, with inhibition of 70%. When tested in the capsaicin and glutamate tests, at 10 mg/kg, i.p., 1 and 2 caused inhibitions of 41.5% and 37.9%, and 37.7% and 54.5%, respectively. These results confirm previous studies carried out by our research group regarding the antinociceptive properties of P. glomerata, stimulating other studies on mechanism of action as well as the determination of additional active principles in this plant. (+info)Progressive island colonization and ancient origin of Hawaiian Metrosideros (Myrtaceae). (7/49)
(+info)Seed dispersal and establishment of endangered plants on Oceanic Islands: the Janzen-Connell model, and the use of ecological analogues. (8/49)
(+info)I'm sorry for any confusion, but "Myrtaceae" is not a medical term. It is a taxonomic category in biology, specifically the family name for a group of flowering plants that include eucalyptus, tea tree, and myrtle, among others. These plants have fleshy fruits or dry capsules and contain essential oils with various medicinal properties. If you have any questions related to health or medicine, I'd be happy to try to help answer those!
"Psidium" is a scientific name for a genus of plants that include several species of tropical trees and shrubs, the most well-known of which is "Psidium guajava," or the common guava. These plants are native to Central and South America and are now grown in many tropical and subtropical regions around the world.
The fruits of these plants are also commonly referred to as "guavas" and are popular for their sweet, tangy flavor and high nutritional content. They are rich in vitamin C, dietary fiber, and antioxidants, making them a valuable addition to a healthy diet.
In medical or scientific contexts, the term "Psidium" may be used to refer specifically to the genus of plants or more broadly to any plant or fruit within that genus.
"Eugenia" is a term that comes from the field of genetics and refers to the practice or study of improving the genetic features of a population. The name "Eugenics" was coined by Francis Galton, a British statistician and scientist, in 1883.
The goal of eugenics is to increase the frequency of traits that are considered desirable and decrease the frequency of traits that are considered undesirable. This can be achieved through various methods, including selective breeding, genetic engineering, and population screening.
It's important to note that eugenics has a controversial history, as it was used in the past to justify forced sterilization, racial discrimination, and other human rights abuses. Today, the term "eugenics" is often associated with coercive or discriminatory practices, and its use is generally discouraged. Instead, modern genetics focuses on providing individuals with information and options for making informed decisions about their own health and reproduction.
"Myrtus" is a botanical name that refers to a genus of evergreen shrubs and trees in the family Myrtaceae. The most common species is Myrtus communis, also known as the common myrtle or European myrtle. It is native to the Mediterranean region and has been used in traditional medicine for various purposes.
In a medical context, "Myrtus" may be mentioned in relation to herbal remedies or phytotherapy, where extracts from the leaves, flowers, or fruits of the plant are used. Some studies suggest that Myrtus communis may have anti-inflammatory, antimicrobial, and antioxidant properties. However, more research is needed to confirm these effects and establish safe and effective therapeutic dosages.
It's important to note that while some natural substances can be beneficial for health, they should not be used as a substitute for professional medical advice or treatment. Always consult with a healthcare provider before starting any new supplement regimen.
Eucalyptus is defined in medical terms as a genus of mostly Australian trees and shrubs that have aromatic leaves and bark, and oil-containing foliage. The oil from eucalyptus leaves contains a chemical called eucalyptol, which has been found to have several medicinal properties.
Eucalyptus oil has been used in traditional medicine for centuries to treat various health conditions such as respiratory problems, fever, and pain. It has anti-inflammatory, antispasmodic, decongestant, and expectorant properties, making it a popular remedy for colds, coughs, and congestion.
Eucalyptus oil is also used in modern medicine as an ingredient in over-the-counter products such as throat lozenges, cough syrups, and topical pain relievers. It is important to note that eucalyptus oil should not be ingested undiluted, as it can be toxic in large amounts.
In addition to its medicinal uses, eucalyptus trees are also known for their rapid growth and ability to drain swampland, making them useful in land reclamation projects.
Leptospermum is a genus of flowering plants in the myrtle family, Myrtaceae. It includes around 80 species of shrubs and small trees that are native to Australia and Southeast Asia. The plants are commonly known as tea trees due to their aromatic leaves which have been used to make a medicinal tea.
The essential oil derived from some species of Leptospermum, particularly Leptospermum scoparium (Manuka), has antimicrobial and anti-inflammatory properties. This oil is used in various medical and therapeutic applications, such as in the treatment of wounds, burns, and skin infections.
However, it's important to note that not all Leptospermum species have medicinal properties, and the use of this plant and its derivatives should be done under the guidance of a healthcare professional.
'Aspergillus ochraceus' is a species of fungi that belongs to the genus Aspergillus. The term 'Aspergillus ochraceus' is used in medical and scientific contexts to refer to this specific type of fungus. It is commonly found in soil, decaying vegetation, and other organic matter, and can also be found in indoor environments such as air conditioning systems, carpeting, and drywall.
While 'Aspergillus ochraceus' is not typically associated with human disease, it can cause invasive aspergillosis in individuals with weakened immune systems, particularly those who have undergone organ transplants or have certain types of cancer. The fungus can also produce toxins that can cause allergic reactions and other health problems in some people.
It's worth noting that while 'Aspergillus ochraceus' is a specific species of fungi, there are many other species of Aspergillus that can also cause human disease, including the more common 'Aspergillus fumigatus'.
Volatile oils, also known as essential oils, are a type of organic compound that are naturally produced in plants. They are called "volatile" because they evaporate quickly at room temperature due to their high vapor pressure. These oils are composed of complex mixtures of various compounds, including terpenes, terpenoids, aldehydes, ketones, esters, and alcohols. They are responsible for the characteristic aroma and flavor of many plants and are often used in perfumes, flavors, and aromatherapy. In a medical context, volatile oils may have therapeutic properties and be used in certain medications or treatments, but it's important to note that they can also cause adverse reactions if not used properly.
A plant extract is a preparation containing chemical constituents that have been extracted from a plant using a solvent. The resulting extract may contain a single compound or a mixture of several compounds, depending on the extraction process and the specific plant material used. These extracts are often used in various industries including pharmaceuticals, nutraceuticals, cosmetics, and food and beverage, due to their potential therapeutic or beneficial properties. The composition of plant extracts can vary widely, and it is important to ensure their quality, safety, and efficacy before use in any application.
I believe there may be a slight misunderstanding in your question. "Plant leaves" are not a medical term, but rather a general biological term referring to a specific organ found in plants.
Leaves are organs that are typically flat and broad, and they are the primary site of photosynthesis in most plants. They are usually green due to the presence of chlorophyll, which is essential for capturing sunlight and converting it into chemical energy through photosynthesis.
While leaves do not have a direct medical definition, understanding their structure and function can be important in various medical fields, such as pharmacognosy (the study of medicinal plants) or environmental health. For example, certain plant leaves may contain bioactive compounds that have therapeutic potential, while others may produce allergens or toxins that can impact human health.
Myrtaceae
Eucalyptus globulus subsp. globulus
Pleurocalyptus
Triplarina nowraensis
Eucalyptus globulus
Angophora costata
Eucalyptus globulus subsp. maidenii
Myrcia rupestris
Angophora paludosa
Triplarina bancroftii
Melaleuca triumphalis
Eucalyptus vesiculosa
Myrtus
Triplarina imbricata
Triplarina paludosa
Eucalyptus diminuta
Triplarina calophylla
Melaleuca preissiana
Melaleuca dichroma
Triplarina
Calycolpus warscewiczianus
Verticordia gracilis
Lithomyrtus obtusa
Syzygium ingens
Eucalyptus globulus subsp. bicostata
Eucalyptus bigalerita
Angophora hispida
Calycorectes
Angophora
Eucalyptus sporadica
Myrtaceae - Wikipedia
Luma (Myrtaceae) - Wikispecies
Myrtaceae
Download citation of Endophytes of Eugenia jambolana Lam. (MYRTACEAE) : a Model for microorganisms - plant association
MYRTACEAE Myrceugenia exsucca - Insidewood Images
Evolution of pollination by frugivorous birds in Neotropical Myrtaceae [PeerJ]
Cleistocalyx MYRTACEAE
Evolution of exceptional species richness among lineages of fleshy-fruited Myrtaceae
Myrtaceae - Plazi TreatmentBank
Eucalyptus pauciflora MYRTACEAE
North Queensland Plants - Myrtaceae
Nuytsia Volume 13: Agonis fragrans (Myrtaceae), a new species from Western Australia | Florabase
User:Tintazul/Plantae - Wikimedia Commons
Myrtaceae Eucalyptus @ ExplorOz Wildflowers
Psidium guajava {Myrtaceae} Guava
Myrtaceae - eFlora of India
Esperance Wildflowers: Taxandria marginata - Myrtaceae
Neotropical Plant PortalWeb-KeyChile - Myrtaceae
Flora of Mozambique: Checklist: Myrtaceae
Media gallery | Myrtaceae of Chile
Myrtaceae | Dead as the Dodo - Holocene Extinctions
Family: Myrtaceae - Digital Herbarium of Crop Plants
Myrtaceae Archives - Page 12 of 16 - Paten Park Native Nursery
Healing and cytotoxic effects of Psidium guajava (Myrtaceae) leaf extracts
Nahrungspflanzen Boliviens
Myrtales3
- Myrtaceae (/mərˈteɪsiˌaɪ, -siːˌiː/), the myrtle family, is a family of dicotyledonous plants placed within the order Myrtales. (wikipedia.org)
- Género de plantas de la familia MYRTACEAE, orden Myrtales, subclase Rosidae. (bvsalud.org)
- A plant genus in the family MYRTACEAE, order Myrtales, subclass Rosidae. (bvsalud.org)
Eucalyptus1
- Eucalyptus ( / ˌ juː k ə ˈ l ɪ p t ə s / ) [2] is a genus of more than 700 species of flowering plants in the family Myrtaceae . (wikipedia.org)
Species7
- Generally, experts agree that vicariance is responsible for the differentiation of Myrtaceae taxa, except in the cases of Leptospermum species now located on New Zealand and New Caledonia, islands which may have been submerged at the time of late Eocene differentiation. (wikipedia.org)
- Recent estimates suggest the Myrtaceae include about 5,950 species in about 132 genera. (wikipedia.org)
- Many new species are being described annually from throughout the range of Myrtaceae. (wikipedia.org)
- In the predominantly Neotropical tribe Myrteae (Myrtaceae), species of two genera, Acca and Myrrhinium , offer fleshy, sugary petals to the consumption of birds that otherwise eat fruits, thus pollinating the plants in an unusual plant-animal interaction. (peerj.com)
- Background and Aims The angiosperm family Myrtaceae comprises 17 tribes with more than half of the estimated 5500 species being referred to the fleshy-fruited and predominantly rainforest associated Syzygieae and Myrteae. (edu.au)
- Based on previous preliminary in vitro screening and on chemotaxonomy, nine species from the Myrtaceae family were selected. (biomedcentral.com)
- This study determined chromosome numbers of Eugenia L. (Myrtaceae, x = 11) for 26 populations of 14 species by conventional cytogenetic techniques. (geneticsmr.com)
Genus1
- A Monograph of the Genus Myrceugenia (Myrtaceae). (nybgshop.org)
Eugenia1
- ETHNOPHARMACOLOGICAL RELEVANCE: Eugenia uniflora Linn, popularly known as 'pitanga', is a native plant endemic to Brazil that belongs to the Myrtaceae family. (bvsalud.org)
Myrtoideae1
- The division of the Myrtaceae into Leptospermoideae and Myrtoideae was challenged by a number of authors, including Johnson and Briggs (1984), who identified 14 tribes or clades within Myrtaceae, and found Myrtoideae to be polyphyletic. (wikipedia.org)
Family4
- Scientists hypothesize that the family Myrtaceae arose between 60 and 56 million years ago (Mya) during the Paleocene era. (wikipedia.org)
- Guava Family: Myrtaceae Photography: Vinisha K. (tifr.res.in)
- We determined the antimicrobial efficacy and cytotoxicity of some under-investigated plants from the Myrtaceae family endemic to South Africa. (biomedcentral.com)
- Syzygium cumini, locally known as Jamun in Asia, is a fruit-bearing crop belonging to the Myrtaceae family. (lu.se)
Myrteae2
- It is found that Syzygieae and Myrteae have experienced elevated diversification rates relative to other lineages of Myrtaceae. (edu.au)
- Conclusions Fleshy fruits have evolved independently in Syzygieae and Myrteae, and this is accompanied by exceptional diversification rate shifts in both instances, suggesting that the evolution of fleshy fruits is a key innovation for rainforest Myrtaceae. (edu.au)
Psidium2
- The aims of this study were to evaluate the wound healing potential in vivo and the cytotoxic effects in vitro of Psidium guajava (Myrtaceae) leaf extract and commonly used corticosteroids. (bvsalud.org)
- 10. Belemtougri RG, Constantin B, Cognard C, Raymond G, Sawadogo L. Effects of two medicinal plants Psidium guajava L. (Myrtaceae) and Diospyros mespiliformis L. (Ebenaceae) leaf extracts on rat skeletal muscle cells in primary culture. (bvsalud.org)
Juss1
- Myrtaceae Juss. (funet.fi)
Fleshy1
- A phylogenetic hypothesis and estimate divergence times for Myrtaceae is developed as a basis to explore the evidence for, and drivers of, elevated diversification rates among the fleshy-fruited tribes of Myrtaceae. (edu.au)
Luma1
- 2023. Luma ( Myrtaceae ) in Kew Science Plants of the World Online . (wikimedia.org)
Lineages1
- These two genera are presently believed to be the earliest arising and surviving lineages of Myrtaceae. (wikipedia.org)
Plant1
- this plant seems to be myrtaceae … please help to identify Image is too small to see any details. (efloraofindia.com)
Data1
- Key Results Analyses of the sequence data provide a strongly supported phylogenetic hypothesis for Myrtaceae. (edu.au)
Syzygium2
- Clove ( Syzygium aromaticum L. Myrtaceae) is an aromatic plant widely cultivated in tropical and subtropical countries, rich in volatile compounds and antioxidants such as eugenol, β-caryophyllene, and α-humulene. (nih.gov)
- Family Myrtaceae Syzygium cumini (Linn. (forestrypedia.com)
Genera1
- These two genera are presently believed to be the earliest arising and surviving lineages of Myrtaceae. (wikipedia.org)
Familia1
- Planta de la familia MYRTACEAE. (bvsalud.org)
Leaf1
- Myrtaceae) leaf aqueous extract. (nih.gov)