keyword
MENU ▼
Read by QxMD icon Read
search

Trichome

keyword
https://www.readbyqxmd.com/read/28916705/the-effects-of-the-exopolysaccharide-and-growth-rate-on-the-morphogenesis-of-the-terrestrial-filamentous-cyanobacterium-nostoc-flagelliforme
#1
Lijuan Cui, Haiyan Xu, Zhaoxia Zhu, Xiang Gao
The terrestrial cyanobacterium Nostoc flagelliforme, which contributes to carbon and nitrogen supplies in arid and semi-arid regions, adopts a filamentous colony form. Owing to its herbal and dietary values, this species has been overexploited. Largely due to the lack of understanding on its morphogenesis, artificial cultivation has not been achieved. Additionally, it may serve as a useful model for recognizing the morphological adaptation of colonial cyanobacteria in terrestrial niches. However, it shows very slow growth in native habitats and is easily disintegrated under laboratory conditions...
September 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28901804/histological-and-antimicrobial-study-of-ononis-arvensis-l
#2
Tünde Dénes, Sámuel Gergely Bartha, Mónika Kerényi, Erzsébet Varga, Viktória Lilla Balázs, Rita Csepregi, Nóra Papp
In this study field restharrow (Ononis arvensis) was investigated for histological and antimicrobial features. The aerial part and the root were embedded in synthetic resin and investigated following sectioning by a rotation microtome. The antimicrobial activity and minimum inhibitory concentration of the solvent fractions of the aerial part were studied against four bacterial strains and one fungus. According to histology, the root covered by rhizodermis contains contiguous vascular elements, which are surrounded by sclerenchyma cells...
September 2017: Acta Biologica Hungarica
https://www.readbyqxmd.com/read/28901723/the-arms-race-between-heliconiine-butterflies-and-passiflora-plants-new-insights-on-an-ancient-subject
#3
Érika C P de Castro, Mika Zagrobelny, Márcio Z Cardoso, Søren Bak
Heliconiines are called passion vine butterflies because they feed exclusively on Passiflora plants during the larval stage. Many features of Passiflora and heliconiines indicate that they have radiated and speciated in association with each other, and therefore this model system was one of the first examples used to exemplify coevolution theory. Three major adaptations of Passiflora plants supported arguments in favour of their coevolution with heliconiines: unusual variation of leaf shape within the genus; the occurrence of yellow structures mimicking heliconiine eggs; and their extensive diversity of defence compounds called cyanogenic glucosides...
September 13, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28889249/papillae-formation-on-trichome-cell-walls-requires-the-function-of-the-mediator-complex-subunit-med25
#4
Christy Fornero, Bangxia Suo, Mais Zahde, Katelyn Juveland, Viktor Kirik
Glassy Hair 1 (GLH1) gene that promotes papillae formation on trichome cell walls was identified as a subunit of the transcriptional mediator complex MED25. The MED25 gene is shown to be expressed in trichomes. The expression of the trichome development marker genes GLABRA2 (GL2) and Ethylene Receptor2 (ETR2) is not affected in the glh1 mutant. Presented data suggest that Arabidopsis MED25 mediator component is likely involved in the transcription of genes promoting papillae deposition in trichomes. The plant cell wall plays an important role in communication, defense, organization and support...
September 9, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28884325/the-occurrence-of-toxic-cyanobacterium-cylindrospermopsis-raciborskii-and-its-toxin-cylindrospermopsin-in-the-huong-river-thua-thien-hue-province-vietnam
#5
Thi Thu Lien Nguyen, Tien Hien Hoang, Trung Kien Nguyen, Thi Thuy Duong
This research reports the presence of species Cylindrospermopsis raciborskii and cylindrospermopsin (CYN) in the Huong River and the relationship between species with environmental factors to find a scientific basis for predicting the risk of pollution of the species and CYN in waters. Strains of C. raciborskii isolated from the river were also identified as potentially toxin-producing through the determination of the presence of toxins in the cultures by ELISA; the presence of the genes involved by PCR confirms the CYN-producing ability of species C...
September 7, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28878497/biochemical-basis-of-improvement-of-defense-in-tomato-plant-against-fusarium-wilt-by-cacl2
#6
Nilanjan Chakraborty, Swarnendu Chandra, Krishnendu Acharya
The objective of this study was to investigate the effectiveness of calcium chloride (CaCl2), as potential elicitor, on tomato plants against Fusarium oxysporum f. sp. lycopersici. Foliar application of CaCl2 showed significant reduction of wilt incidence after challenge inoculation. Increased production of defense and antioxidant enzymes was observed in elicitor treated sets over control. Simultaneously, altered amount of phenolic acids were analyzed spectrophotometrically and by using high performance liquid chromatography...
July 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/28867182/deficiency-of-klf4-compromises-the-lung-function-in-an-acute-mouse-model-of-allergic-asthma
#7
Jeanette A Nimpong, Wintana Gebregziabher, Udai P Singh, Prakash Nagarkatti, Mitzi Nagarkatti, Johnie Hodge, Chunming Liu, Daping Fan, Walden Ai
Asthma is a chronic inflammatory disease of the airways and the mechanisms are not fully understood. Myeloid-derived suppressor cells (MDSCs) are a heterogeneous group of monocytes, granulocyte and myeloid cells at early stage of differentiation. They possess phenotypic plasticity and regulate airway inflammation. We recently reported that Kruppel-like factor 4 (KLF4) regulates MDSC differentiation into fibrocytes, emerging effectors in chronic inflammation. However, the role of KLF4 in asthma is not known...
August 31, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28863374/uptake-of-the-natural-radioactive-gas-radon-by-an-epiphytic-plant
#8
Peng Li, Ruiwen Zhang, Mintian Gu, Guiling Zheng
Radon ((222)Rn) is a natural radioactive gas and the major radioactive contributor to human exposure. The present effective ways to control Rn contamination are ventilation and adsorption with activated carbon. Plants are believed to be negligible in reducing airborne Rn. Here, we found epiphytic Tillandsia brachycaulos (Bromeliaceae) was effective in reducing airborne Rn via the leaves. Rn concentrations in the Rn chamber after Tillandsia plant treatments decreased more than those in the natural situation...
August 29, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28859320/role-of-pats-and-cell-type-on-the-heterocyst-spacing-pattern-in-a-filamentous-branching-cyanobacterium
#9
Laura A Antonaru, Dennis J Nürnberg
Cell differentiation is one of the marks of multicellular organisms. Terminally specialised nitrogen-fixing cells, termed heterocysts, evolved in filamentous cyanobacteria more than 2 Gya. The development of their spacing pattern has been thoroughly investigated in model organisms such as Anabaena sp. PCC 7120. This paper focuses on the more complex, branching cyanobacterium Mastigocladus laminosus (Stigonematales). Contrary to what has been previously published, a heterocyst spacing pattern is present in M...
August 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28853706/evolutionary-routes-to-biochemical-innovation-revealed-by-integrative-analysis-of-a-plant-defense-related-specialized-metabolic-pathway
#10
Gaurav D Moghe, Bryan J Leong, Steven Hurney, A Daniel Jones, Robert L Last
The diversity of life on Earth is a result of continual innovations in molecular networks influencing morphology and physiology. Plant specialized metabolism produces hundreds of thousands of compounds, offering striking examples of these innovations. To understand how this novelty is generated, we investigated the evolution of the Solanaceae family-specific, trichome-localized acylsugar biosynthetic pathway using a combination of mass spectrometry, RNA-seq, enzyme assays, RNAi and phylogenomics in different non-model species...
August 30, 2017: ELife
https://www.readbyqxmd.com/read/28838953/bioenergetics-of-monoterpenoid-essential-oil-biosynthesis-in-non-photosynthetic-glandular-trichomes
#11
Sean R Johnson, Iris Lange, Narayanan Srividya, Bernd Markus Lange
The commercially important essential oils of peppermint (Mentha x piperita L.) and its relatives in the mint family (Lamiaceae) are accumulated in specialized anatomical structures called glandular trichomes (GTs). A genome-scale stoichiometric model of secretory phase metabolism in peppermint GTs was constructed based on current biochemical and physiological knowledge. Fluxes through the network were predicted based on metabolomic and transcriptomic data. Using simulated reaction deletions, this model predicted that two processes, the regeneration of ATP and ferredoxin (in its reduced form), exert substantial control over flux toward monoterpenes...
August 24, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28837995/microscopic-and-phytochemical-comparison-of-the-three-leonurus-species-l-%C3%A2-cardiaca-l-%C3%A2-japonicus-and-l-%C3%A2-sibiricus
#12
Anna Pitschmann, Christine Waschulin, Christina Sykora, Sodnomtseren Purevsuren, Sabine Glasl
At least three Leonurus species, Leonurus cardiaca, Leonurus japonicus, and Leonurus sibiricus, are used in various traditional medicinal systems for different therapeutic purposes. The plant names "L. sibiricus" and "L. japonicus" are often used as synonyms, which causes confusion in literature and implies that several studies may be based on improperly identified plant material. To avoid further confusion, the current status of the identification of these three species is illustrated. Characteristics for their unequivocal identification are presented using stereo and light microscopy as well as HPTLC...
August 24, 2017: Planta Medica
https://www.readbyqxmd.com/read/28830833/the-european-wool-carder-bee-anthidium-manicatum-eavesdrops-on-plant-volatile-organic-compounds-vocs-during-trichome-collection
#13
Kelsey K Graham, Steve Brown, Stephanie Clarke, Ursula S R Röse, Philip T Starks
The plant-pollinator relationship is generally considered mutualistic. This relationship is less clear, however, when pollinators also cause tissue damage. Some Megachilidae bees collect plant material for nests from the plants they pollinate. In this study, we examined the relationship between Anthidium manicatum, the European wool-carder bee, and the source of its preferred nesting material - Stachys byzantina, lamb's ear. Female A. manicatum use their mandibles to trim trichomes from plants for nesting material (a behaviour dubbed "carding")...
August 19, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28830755/naringin-attenuates-thioacetamide-induced-liver-fibrosis-in-rats-through-modulation-of-the-pi3k-akt-pathway
#14
Kholoud Alaa El-Mihi, Hany Ibrahim Kenawy, Amro El-Karef, Nehal Mohsen Elsherbiny, Laila Ahmed Eissa
AIMS: Naringin (NR) is a flavanone glycoside extracted from grapefruits and citrus fruits. The aim of this study is to investigate the antifibrotic efficacy of NR in thioacetamide (TAA)-induced hepatic fibrosis in rats through evaluating NR effect on the PI3K/Akt pathway. MAIN METHODS: Hepatic fibrosis was induced in rats by intraperitoneal injection of TAA (200mg/kg) twice per week for 6weeks. Simultaneously, NR (40mg/kg/day, p.o.) was given along with TAA injection...
August 19, 2017: Life Sciences
https://www.readbyqxmd.com/read/28830020/plant-secretory-structures-more-than-just-reaction-bags
#15
REVIEW
Alain Tissier
Plants have a remarkable capacity for the production of a wide range of metabolites. Much has been reported and reviewed on the diversity of these metabolites and how it is achieved, for example through the evolution of enzyme families. In comparison, relatively little is known on the extraordinary metabolic productivity of dedicated organs where many of these metabolites are synthesized and accumulate. Plant glandular trichomes are such specialized metabolite factories, for which recent omics analyses have shed new light on the adaptive metabolic strategies that support high metabolic fluxes...
August 19, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28829638/herbivore-mediated-interaction-promotes-the-maintenance-of-trichome-dimorphism-through-negative-frequency-dependent-selection
#16
Yasuhiro Sato, Hiroshi Kudoh
Natural plant populations exhibit genetic variation in defense traits against herbivores. Despite a growing body of evidence for herbivore-mediated selection on plant defenses, we still know little about how genetic variation persists in antiherbivore defense traits. Here we present field and experimental evidence for herbivore-mediated frequency-dependent selection that promotes the maintenance of trichome-producing (hairy) and trichomeless (glabrous) plants of Arabidopsis halleri subsp. gemmifera. First, in a natural population where the specialist leaf beetle Phaedon brassicae was prevalent, hairy plants were damaged less when the frequency of neighboring glabrous plants increased...
September 2017: American Naturalist
https://www.readbyqxmd.com/read/28812643/a-submarine-volcanic-eruption-leads-to-a-novel-microbial-habitat
#17
Roberto Danovaro, Miquel Canals, Michael Tangherlini, Antonio Dell'Anno, Cristina Gambi, Galderic Lastras, David Amblas, Anna Sanchez-Vidal, Jaime Frigola, Antoni M Calafat, Rut Pedrosa-Pàmies, Jesus Rivera, Xavier Rayo, Cinzia Corinaldesi
Submarine volcanic eruptions are major catastrophic events that allow investigation of the colonization mechanisms of newly formed seabed. We explored the seafloor after the eruption of the Tagoro submarine volcano off El Hierro Island, Canary Archipelago. Near the summit of the volcanic cone, at about 130 m depth, we found massive mats of long, white filaments that we named Venus's hair. Microscopic and molecular analyses revealed that these filaments are made of bacterial trichomes enveloped within a sheath and colonized by epibiotic bacteria...
April 24, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28810231/cr-induced-cellular-injury-and-necrosis-in-glycine-max-l-biochemical-mechanism-of-oxidative-damage-in-chloroplast
#18
Kalimuthu Balasaraswathi, Sivalingam Jayaveni, Janardhanam Sridevi, Dhanasingh Sujatha, Kavati Phebe Aaron, Chellan Rose
Chromium-induced toxicity and mechanisms of cell death involved in plants are yet to be fully elucidated. To understand the events of these processes, the stress response of the soybean plant using trivalent and hexavalent chromium compounds, namely, basic chromium sulphate (BCS) and potassium dichromate (K2Cr2O7) was investigated. The leaf surface morphology for stomatal aperture, wax deposition and presence of trichomes for chromium accumulation was examined by SEM-EDAX and light microscopy. The leaf mesophyll cell integrity was identified by trypan blue staining; chlorophyll autofluorescence, ROS generation and mitochondrial function were studied by fluorescence microscopy using different dyes...
August 2, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28806605/phytochemistry-of-european-primula-species
#19
REVIEW
Paola S Colombo, Guido Flamini, Graziella Rodondi, Claudia Giuliani, Laura Santagostini, Gelsomina Fico
The genus Primula is the largest among the Primulaceae and is widespread mainly in the cold and temperate regions of the Northern Hemisphere. Since the beginning of the Twentieth century, several studies on the phytochemical composition of different species of Primula have been carried out. The main constituents examined were tissue and epicuticular flavonoids and saponins, which are of therapeutic significance. Only in recent years studies of the volatiles emitted by leaves and flowers have been carried out as well, but they are restricted to a small number of species...
August 11, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28798890/evaluation-of-cortez-onestep-chlamydia-rapicard%C3%A2-insta-test-for-the-detection-of-chlamydia-trachomatis-in-pregnant-women-at-mbare-polyclinic-in-harare-zimbabwe
#20
Stephen Stephen, Chiwoneso Gwyneth Elizabeth Muchaneta-Kubara, Marshall Wesley Munjoma, Gibson Mandozana
BACKGROUND: Cervical chlamydia infection poses high risk of pregnancy complications and neonatal infection. Reference methods for the detection of chlamydia infection are not available for routine use in developing countries. Point-of-care (POC) tests can bridge this gap. This study evaluated Cortez Onestep Chlamydia Rapicard™ insta test for the detection of Chlamydia trachomatis in pregnant women at Mbare Polyclinic and determined the prevalence of C. trachomatis. METHODS: This was a cross sectional study in 242 pregnant women aged ≥18 years attending their first ANC visit at Mbare polyclinic in Harare, Zimbabwe...
2017: International Journal of MCH and AIDS
keyword
keyword
106179
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"