keyword
https://read.qxmd.com/read/37595003/connecting-the-dots-path-model-to-identify-key-phenotypic-traits-for-screening-plants-with-tolerance-to-nitrogen-deficiency
#1
JOURNAL ARTICLE
Ranjeeta Adhikari, Krishna Nemali
Varieties that tolerate low nitrogen (N) application rates can reduce fertilizer costs, minimize nitrate leaching and runoff losses, and lower overall CO2 emissions associated with fertilizer manufacturing. The goal of our research is to show the usefulness of path models to identify key phenotypic traits for screening plants with a tolerance to low N application rates. We grew tolerant and sensitive cultivars of poinsettia (Euphorbia pulcherrima) using a water-soluble fertilizer (15-5-15 Cal Mag) in both optimal (electrical conductivity of 2...
2023: PloS One
https://read.qxmd.com/read/37279557/population-changes-of-bemisia-tabaci-hemiptera-aleyrodidae-on-different-colored-poinsettia-leaves-with-different-trichome-densities-and-chemical-compositions
#2
JOURNAL ARTICLE
Pei-Qiong Shi, Jing Liu, Jun-Xi Ye, Ting-Zhen Zhang, Yu-Chun Lin, Qiao-Bin Lao, Bao-Li Qiu, Hong-Kai Zhou, Jin Xu
The whitefly, Bemisia tabaci, is a destructive and invasive pest of many horticultural plants including poinsettia (Euphorbia pulcherrima). Outbreaks of B. tabaci cause serious damage by direct feeding on phloem sap, and spreading 100+ plant viruses to crops. Bemisia tabaci were observed more frequently on green than red poinsettia leaves, and the factors responsible for this are unknown. Here, we investigated the development rate, survivorship, fecundity of B. tabaci feeding on green versus red leaves, as well as the leaves' volatiles, trichome density, anthocyanin content, soluble sugars, and free amino acids...
June 4, 2023: Journal of Economic Entomology
https://read.qxmd.com/read/37255565/anthocyanin-metabolic-engineering-of-euphorbia-pulcherrima-advances-and-perspectives
#3
REVIEW
Edmundo Lozoya-Gloria, Fernando Cuéllar-González, Neftalí Ochoa-Alejo
The range of floral colors is determined by the type of plant pigment accumulated by the plant. Anthocyanins are the most common flavonoid pigments in angiosperms; they provide a wide range of visible colors from red-magenta to blue-purple, products of cyanidin and delphinidin biosynthesis, respectively. For the floriculture industry, floral color is one of the most important ornamental characteristics for the development of new commercial varieties; however, most plant species are restricted to a certain color spectrum, limited by their own genetics...
2023: Frontiers in Plant Science
https://read.qxmd.com/read/36775896/leaf-and-stem-anatomical-characterization-of-euphorbia-hirta-l-a-tolerant-species-to-glyphosate
#4
JOURNAL ARTICLE
Ana Carolina Oliveira Chapeta, Luiz Ricardo Dos Santos Tozin, Amanda Dos Santos Souza, Milena Gonçalves Costa, Jéssica Ferreira Lourenço Leal, Camila Ferreira de Pinho
Euphorbia hirta L. is a weed species that is tolerant to the most used herbicide in agriculture, glyphosate. The anatomical characteristics of plants influence the processes of absorption and translocation of herbicides. The objective of this work was to characterize the anatomy of the aerial vegetative axis (leaves and stem) of E. hirta , to support the establishment of strategies for better control of this species with herbicides. The plants were grown in a greenhouse under controlled conditions. When they reached sizes between 8 and 12 cm, samples of stems and leaves were collected, fixed in FAA 50, and stored in 70% ethanol...
February 12, 2023: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://read.qxmd.com/read/34776565/first-genome-edited-poinsettias-targeted-mutagenesis-of-flavonoid-3-hydroxylase-using-crispr-cas9-results-in-a-colour-shift
#5
JOURNAL ARTICLE
Daria Nitarska, Robert Boehm, Thomas Debener, Rares Calin Lucaciu, Heidi Halbwirth
The CRISPR/Cas9 system is a remarkably promising tool for targeted gene mutagenesis, and becoming ever more popular for modification of ornamental plants. In this study we performed the knockout of flavonoid 3 ' -hydroxylase ( F3 ' H ) with application of CRISPR/Cas9 in the red flowering poinsettia ( Euphorbia pulcherrima) cultivar 'Christmas Eve', in order to obtain plants with orange bract colour, which accumulate prevalently pelargonidin. F3'H is an enzyme that is necessary for formation of cyanidin type anthocyanins, which are responsible for the red colour of poinsettia bracts...
2021: Plant Cell, Tissue and Organ Culture
https://read.qxmd.com/read/33757424/a-highly-mutable-gst-is-essential-for-bract-colouration-in-euphorbia-pulcherrima-willd-ex-klotsch
#6
JOURNAL ARTICLE
Vinicius Vilperte, Robert Boehm, Thomas Debener
BACKGROUND: Mutation breeding is an extraordinary tool in plant breeding to increase the genetic variability, where mutations in anthocyanin biosynthesis are targets to generate distinctive phenotypes in ornamental species. In poinsettia, ionizing radiation is routinely applied in breeding programs to obtaining a range of colours, with nearly all pink and white varieties being obtained after γ- or X-ray mutagenesis of red varieties. In the present study we performed a thorough characterization of a potential mutagenesis target gene as the main responsible for the 'white paradox' in poinsettia...
March 23, 2021: BMC Genomics
https://read.qxmd.com/read/30285622/the-rare-orange-red-colored-euphorbia-pulcherrima-cultivar-harvest-orange-shows-a-nonsense-mutation-in-a-flavonoid-3-hydroxylase-allele-expressed-in-the-bracts
#7
JOURNAL ARTICLE
Daria Nitarska, Carmen Stefanini, Christian Haselmair-Gosch, Silvija Miosic, Benjamin Walliser, Maja Mikulic-Petkovsek, Ionela Regos, Ana Slatnar, Thomas Debener, Diro Terefe-Ayana, Vinicius Vilperte, Johannes Hadersdorfer, Karl Stich, Heidi Halbwirth
BACKGROUND: Commercially available poinsettia (Euphorbia pulcherrima) varieties prevalently accumulate cyanidin derivatives and show intense red coloration. Orange-red bract color is less common. We investigated four cultivars displaying four different red hues with respect to selected enzymes and genes of the anthocyanin pathway, putatively determining the color hue. RESULTS: Red hues correlated with anthocyanin composition and concentration and showed common dark red coloration in cultivars 'Christmas Beauty' and 'Christmas Feeling' where cyanidin derivatives were prevalent...
October 3, 2018: BMC Plant Biology
https://read.qxmd.com/read/26445953/studies-on-phytochemical-antioxidant-anti-inflammatory-and-analgesic-activities-of-euphorbia-dracunculoides
#8
JOURNAL ARTICLE
Muhammad Majid, Muhammad Rashid Khan, Naseer Ali Shah, Ihsan Ul Haq, Muhammad Asad Farooq, Shafi Ullah, Anam Sharif, Zartash Zahra, Tahira Younis, Moniba Sajid
BACKGROUND: Plants provide an alternative source to manage various human disorders due to diverse metabolites. Euphorbia dracunculoides of family Euphorbiaceae is used by local practitioners in rheumatism, epilepsy, edema, snake bite, warts and also possesses diuretic and purgative effects. The present study evaluated the antioxidant, anti-inflammatory and analgesic activities of various extracts of E. dracunculoides. Further, phytochemical constituents of the leading extracts were also investigated...
2015: BMC Complementary and Alternative Medicine
https://read.qxmd.com/read/25097888/effect-of-pseudomonas-putida-on-growth-and-anthocyanin-pigment-in-two-poinsettia-euphorbia-pulcherrima-cultivars
#9
JOURNAL ARTICLE
Ramon Zulueta-Rodriguez, Miguel Victor Cordoba-Matson, Luis Guillermo Hernandez-Montiel, Bernardo Murillo-Amador, Edgar Rueda-Puente, Liliana Lara
Pseudomonas putida is plant growth promoting rhizobacteria (PGPR) that have the capacity to improve growth in plants. The purpose of this study was to determine growth and anthocyanin pigmentation of the bracts in two poinsettia Euphorbia pulcherrima cultivars (Prestige and Sonora Marble) using three strains of P. putida, as well as a mixture of the three (MIX). Comparison with the control group indicated for the most part that Prestige grew better than the Sonora Marble cultivars with the PGPR strains. Prestige with the MIX strain grew better compared to control for the number of cyathia (83 versus 70...
2014: TheScientificWorldJournal
https://read.qxmd.com/read/25015465/preliminary-phytochemical-screening-antimicrobial-and-antioxidant-activities-of-euphorbia-milli
#10
JOURNAL ARTICLE
Abdur Rauf, Ajmal Khan, Nizam Uddin, Muhammad Akram, Mohammad Arfan, Ghias Uddin, Muhammad Qaisar
Euphorbia milii is a Pakistani herb used for various infectious diseases. In this study we have carried out phytochemical, antibacterial and antioxidant investigation of different extracts/fractions. Phytochemical studies showed the presence of cardiac glycosides, steroids/phytosterols, anthocyanin, proteins, terpenoids, flavonoids and tannins. Susceptibility testing by well diffusion assay of its chloroform and methanol fractions revealed good antimicrobial activity against Klebsiella pneumonia and Staph epidermis...
July 2014: Pakistan Journal of Pharmaceutical Sciences
https://read.qxmd.com/read/24270331/selection-of-a-high-and-stable-pigment-producing-strain-in-cultured-euphorbia-millii-cells
#11
JOURNAL ARTICLE
Y Yamamoto, R Mizuguchi, Y Yamada
A high pigment-producing strain of cultured Euphorbia millii cells was isolated by clonal selection. The pigment obtained was red and consisted mainly of anthocyanin. The amount of this pigment obtained after 24 selections was seven times that found in the original cells. Statistical and cell-pedigree analyses proved that this cell strain has stable productivity for this red pigment.
June 1982: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://read.qxmd.com/read/24258751/chemical-constituents-of-cultured-cells-of-euphorbia-tirucalli-and-e-millii
#12
JOURNAL ARTICLE
Y Yamamoto, R Mizuguchi, Y Yamada
We induced calluses from two Euphorbia species and analyzed the lipids and pigments of their cells. Growth was promoted when malt extract was added to the medium for callus induction. The lipid constituents of both E. tirucalli and E. millii calluses were the same; sitosterol, stigmasterol, campesterol, palmitic acid and linoleic acid. In addition, an anthocyanin, cyanidin glycoside, was isolated from callus that had been induced from E. millii leaves cultured on medium containing 0.1 ppm 2,4-D.
August 1981: Plant Cell Reports
https://read.qxmd.com/read/18930798/antisickling-activity-of-anthocyanins-from-bombax-pentadrum-ficus-capensis-and-ziziphus-mucronata-photodegradation-effect
#13
JOURNAL ARTICLE
P T Mpiana, V Mudogo, D S T Tshibangu, E K Kitwa, A B Kanangila, J B S Lumbu, K N Ngbolua, E K Atibu, M K Kakule
AIM OF THE STUDY: A survey was conducted in Lubumbashi city (Democratic Republic of Congo) in order to: (a) identify medicinal plants used by traditional healers in the management of sickle cell anaemia, (b) verify their antisickling activity in vitro, (c) determine the most active plants, and (d) verify if anthocyanins are responsible of the bioactivity and study their photodegradation effect. MATERIALS AND METHODS: The Emmel test was used in vitro, for the antisickling activity assays of aqueous and ethanolic extracts of different parts of these plants when a UV lamp and solar irradiations were used to induce the photodegradation effect...
December 8, 2008: Journal of Ethnopharmacology
https://read.qxmd.com/read/18158306/anthocyanin-inhibits-propidium-iodide-dna-fluorescence-in-euphorbia-pulcherrima-implications-for-genome-size-variation-and-flow-cytometry
#14
JOURNAL ARTICLE
Michael D Bennett, H James Price, J Spencer Johnston
BACKGROUND: Measuring genome size by flow cytometry assumes direct proportionality between nuclear DNA staining and DNA amount. By 1997 it was recognized that secondary metabolites may affect DNA staining, thereby causing inaccuracy. Here experiments are reported with poinsettia (Euphorbia pulcherrima) with green leaves and red bracts rich in phenolics. METHODS: DNA content was estimated as fluorescence of propidium iodide (PI)-stained nuclei of poinsettia and/or pea (Pisum sativum) using flow cytometry...
April 2008: Annals of Botany
https://read.qxmd.com/read/16655069/anthocyanins-in-bracts-of-euphorbia-pulcherrima-as-revealed-by-paper-chromatographic-and-spectrophotometric-methods
#15
JOURNAL ARTICLE
S Asen
No abstract text is available yet for this article.
January 1958: Plant Physiology
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