Classification and Naming of Plants
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Glossary - Cellbiology
1 Glossary - Cellbiology Blotting: (Blot Analysis) Widely used biochemical technique for detecting the presence of specific macromolecules (proteins, mRNAs, or DNA sequences) in a mixture. A sample first is separated on an agarose or polyacrylamide gel usually under denaturing conditions; the separated components are transferred (blotting) to a nitrocellulose sheet, which is exposed to a radiolabeled molecule that specifically binds to the macromolecule of interest, and then subjected to autoradiography. Northern B.: mRNAs are detected with a complementary DNA; Southern B.: DNA restriction fragments are detected with complementary nucleotide sequences; Western B.: Proteins are detected by specific antibodies. Cell: The fundamental unit of living organisms. Cells are bounded by a lipid-containing plasma membrane, containing the central nucleus, and the cytoplasm. Cells are generally capable of independent reproduction. More complex cells like Eukaryotes have various compartments (organelles) where special tasks essential for the survival of the cell take place. Cytoplasm: Viscous contents of a cell that are contained within the plasma membrane but, in eukaryotic cells, outside the nucleus. The part of the cytoplasm not contained in any organelle is called the Cytosol. Cytoskeleton: (Gk. ) Three dimensional network of fibrous elements, allowing precisely regulated movements of cell parts, transport organelles, and help to maintain a cell’s shape. • Actin filament: (Microfilaments) Ubiquitous eukaryotic cytoskeletal proteins (one end is attached to the cell-cortex) of two “twisted“ actin monomers; are important in the structural support and movement of cells. Each actin filament (F-actin) consists of two strands of globular subunits (G-Actin) wrapped around each other to form a polarized unit (high ionic cytoplasm lead to the formation of AF, whereas low ion-concentration disassembles AF). -
Liliaceae S.L. (Lily Family)
Liliaceae s.l. (Lily family) Photo: Ben Legler Photo: Hannah Marx Photo: Hannah Marx Lilium columbianum Xerophyllum tenax Trillium ovatum Liliaceae s.l. (Lily family) Photo: Yaowu Yuan Fritillaria lanceolata Ref.1 Textbook DVD KRR&DLN Erythronium americanum Allium vineale Liliaceae s.l. (Lily family) Herbs; Ref.2 Stems often modified as underground rhizomes, corms, or bulbs; Flowers actinomorphic; 3 sepals and 3 petals or 6 tepals, 6 stamens, 3 carpels, ovary superior (or inferior). Tulipa gesneriana Liliaceae s.l. (Lily family) “Liliaceae” s.l. (sensu lato: “in the broad sense”) - Lily family; 288 genera/4950 species, including Lilium, Allium, Trillium, Tulipa; This family is treated in a very broad sense in this class, as in the Flora of the Pacific Northwest. The “Liliaceae” s.l. taught in this class is not monophyletic. It is apparent now that the family should be treated in a narrower sense and some of the members should form their own families. Judd et al. recognize 15+ families: Agavaceae, Alliaceae, Amarylidaceae, Asparagaceae, Asphodelaceae, Colchicaceae, Dracaenaceae (Nolinaceae), Hyacinthaceae, Liliaceae, Melanthiaceae, Ruscaceae, Smilacaceae, Themidaceae, Trilliaceae, Uvulariaceae and more!!! (see web reading “Consider the Lilies”) Iridaceae (Iris family) Photo: Hannah Marx Photo: Hannah Marx Iris pseudacorus Iridaceae (Iris family) Photo: Yaowu Yuan Photo: Yaowu Yuan Sisyrinchium douglasii Sisyrinchium sp. Iridaceae (Iris family) Iridaceae - 78 genera/1750 species, Including Iris, Gladiolus, Sisyrinchium. Herbs, aquatic or terrestrial; Underground stems as rhizomes, bulbs, or corms; Leaves alternate, 2-ranked and equitant Ref.3 (oriented edgewise to the stem; Gladiolus italicus Flowers actinomorphic or zygomorphic; 3 sepals and 3 petals or 6 tepals; Stamens 3; Ovary of 3 fused carpels, inferior. -
Rapid Assay Replicate
Algae Analysis Report and Data Set Customer ID: 000 Tracking Code: 200014-000 Sample ID: Rapid Assay Replicate: . Customer ID: 000 Sample Date: 4/30/2020 Sample Level: Epi Job ID: 1 Station: Sample Station Sample Depth: 0 System Name: Sample Lake Site: Sample Site Preservative: Glutaraldehyde Report Notes: Sample Report Note Division: Bacillariophyta Taxa ID Genus Species Subspecies Variety Form Morph Structure Relative Concentration 1109 Diatoma tenuis . Vegetative 1.00 1000936 Lindavia intermedia . Vegetative 18.00 9123 Nitzschia palea . Vegetative 1.00 1293 Stephanodiscus niagarae . Vegetative 2.00 Summary for Division ~ Bacillariophyta (4 detail records) Sum Total Bacillariophyta 22.00 Division: Chlorophyta Taxa ID Genus Species Subspecies Variety Form Morph Structure Relative Concentration 2683 *Chlorococcaceae spp . 2-9.9 um Vegetative 1.00 spherical 2491 Schroederia judayi . Vegetative 25.00 Summary for Division ~ Chlorophyta (2 detail records) Sum Total Chlorophyta 26.00 = Identification is Uncertain 200014-000 Monday, January 18, 2021 * = Family Level Identification Phytoplankton - Rapid Assay Page 2 of 13 Division: Cryptophyta Taxa ID Genus Species Subspecies Variety Form Morph Structure Relative Concentration 3015 Cryptomonas erosa . Vegetative 15.00 3043 Rhodomonas minuta . nannoplanctica . Vegetative 2.00 Summary for Division ~ Cryptophyta (2 detail records) Sum Total Cryptophyta 17.00 Division: Cyanophyta Taxa ID Genus Species Subspecies Variety Form Morph Structure Relative Concentration 4041 Aphanizomenon flos-aquae . -
Revised Glossary for AQA GCSE Biology Student Book
Biology Glossary amino acids small molecules from which proteins are A built abiotic factor physical or non-living conditions amylase a digestive enzyme (carbohydrase) that that affect the distribution of a population in an breaks down starch ecosystem, such as light, temperature, soil pH anaerobic respiration respiration without using absorption the process by which soluble products oxygen of digestion move into the blood from the small intestine antibacterial chemicals chemicals produced by plants as a defence mechanism; the amount abstinence method of contraception whereby the produced will increase if the plant is under attack couple refrains from intercourse, particularly when an egg might be in the oviduct antibiotic e.g. penicillin; medicines that work inside the body to kill bacterial pathogens accommodation ability of the eyes to change focus antibody protein normally present in the body acid rain rain water which is made more acidic by or produced in response to an antigen, which it pollutant gases neutralises, thus producing an immune response active site the place on an enzyme where the antimicrobial resistance (AMR) an increasing substrate molecule binds problem in the twenty-first century whereby active transport in active transport, cells use energy bacteria have evolved to develop resistance against to transport substances through cell membranes antibiotics due to their overuse against a concentration gradient antiretroviral drugs drugs used to treat HIV adaptation features that organisms have to help infections; they -
8 April 2021 Mr. Jon Kurland Assistant
8 April 2021 Mr. Jon Kurland Assistant Regional Administrator Protected Resources Division, Alaska Region National Marine Fisheries Service P.O. Box 21668 Juneau, Alaska 99082-1668 Dear Mr. Kurland: The Marine Mammal Commission (the Commission), in consultation with its Committee of Scientific Advisors on Marine Mammals, has reviewed the National Marine Fisheries Service’s (NMFS) 8 January 2021 Federal Register notice (86 Fed. Reg. 1452) revising its proposed designation of critical habitat for Arctic ringed seals (Phoca hispida hispida)1 and reopening the comment period on that proposal. The Commission offers the following comments and recommendations. Background On 28 December 2012, NMFS published a final rule listing the Arctic ringed seal as threatened under the Endangered Species Act (ESA) (77 Fed. Reg. 76706) and requesting information on physical and biological features essential to the conservation of Arctic ringed seals and on economic consequences of designating critical habitat for this species. Section 3(5)(A) of the ESA defines “critical habitat” as: (i) the specific areas within the geographical area occupied by the species, at the time it is listed in accordance with section 4 of this Act, on which are found those physical or biological features (I) essential to the conservation of the species and (II) which may require special management considerations or protection; and (ii) specific areas outside the geographical area occupied by the species at the time it is listed in accordance with the provisions of section 4 of this Act, upon a determination by the Secretary that such areas are essential for the conservation of the species. -
"Phylum" for "Division" for Groups Treated As Plants Author(S): H
Proposal (10) to Substitute the Term "Phylum" for "Division" for Groups Treated as Plants Author(s): H. C. Bold, A. Cronquist, C. Jeffrey, L. A. S. Johnson, L. Margulis, H. Merxmüller, P. H. Raven and A. L. Takhtajan Reviewed work(s): Source: Taxon, Vol. 27, No. 1 (Feb., 1978), pp. 121-122 Published by: International Association for Plant Taxonomy (IAPT) Stable URL: http://www.jstor.org/stable/1220504 . Accessed: 15/08/2012 04:49 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. International Association for Plant Taxonomy (IAPT) is collaborating with JSTOR to digitize, preserve and extend access to Taxon. http://www.jstor.org TAXON 27 (1): 121-132 FEBRUARY 1978 NOMENCLATURE TYPIFICATION OF MICROORGANISMS: A PROPOSAL Ralph A. Lewin * & G. E. Fogg** Rules and recommendations for the typification of many kinds of microorganisms, in- cluding microscopic algae and fungi, need to be updated for a variety of reasons. Improve- ments of fixation techniques normally make it unnecessary to invoke Article 9, Note 1, which relates to "the name of a species of infraspecific taxon of Recent plants of which it is impossible to preserve a specimen..." On the other hand, more and more taxonomy is being based on electron-microscopy, biochemistry, serology or other modern techniques for which living material may be needed, and for which a herbarium sheet is generally inadequate and a drawing, or even a photomicrograph, is for various reasons unsatisfactory. -
Determining the Transgene Containment Level Provided by Chloroplast Transformation
Determining the transgene containment level provided by chloroplast transformation Stephanie Ruf, Daniel Karcher, and Ralph Bock* Max-Planck-Institut fu¨r Molekulare Pflanzenphysiologie, Am Mu¨hlenberg 1, D-14476 Potsdam-Golm, Germany Edited by Maarten Koornneef, Wageningen University and Research Centre, Wageningen, The Netherlands, and approved February 28, 2007 (received for review January 2, 2007) Plastids (chloroplasts) are maternally inherited in most crops. cybrids (8, 9), which has been suggested to contribute substan- Maternal inheritance excludes plastid genes and transgenes from tially to the observed paternal leakage (2). However, to what pollen transmission. Therefore, plastid transformation is consid- extent hybrid effects and/or differences in the plastid mutations ered a superb tool for ensuring transgene containment and im- and markers used in the different studies account for the proving the biosafety of transgenic plants. Here, we have assessed different findings is unknown, and thus, reliable quantitative the strictness of maternal inheritance and the extent to which data on occasional paternal plastid transmission are largely plastid transformation technology confers an increase in transgene lacking. Because such data are of outstanding importance to the confinement. We describe an experimental system facilitating critical evaluation of the biosafety of the transplastomic tech- stringent selection for occasional paternal plastid transmission. In nology as well as to the mathematical modeling of outcrossing a large screen, we detected low-level paternal inheritance of scenarios, we set out to develop an experimental system suitable transgenic plastids in tobacco. Whereas the frequency of transmis- for determining the frequency of occasional paternal transmis- ؊5 .sion into the cotyledons of F1 seedlings was Ϸ1.58 ؋ 10 (on 100% sion of plastid transgenes cross-fertilization), transmission into the shoot apical meristem We have set up the system for tobacco (Nicotiana tabacum) for was significantly lower (2.86 ؋ 10؊6). -
Specification and Maintenance of the Floral Meristem: Interactions Between Positively- Acting Promoters of Flowering and Negative Regulators
SPECIAL SECTION: EMBRYOLOGY OF FLOWERING PLANTS Specification and maintenance of the floral meristem: interactions between positively- acting promoters of flowering and negative regulators Usha Vijayraghavan1,*, Kalika Prasad1 and Elliot Meyerowitz2,* 1Department of MCB, Indian Institute of Science, Bangalore 560 012, India 2Division of Biology 156–29, California Institute of Technology, Pasadena, CA 91125, USA meristems that give rise to modified leaves – whorls of A combination of environmental factors and endoge- nous cues trigger floral meristem initiation on the sterile organs (sepals and petals) and reproductive organs flanks of the shoot meristem. A plethora of regulatory (stamens and carpels). In this review we focus on mecha- genes have been implicated in this process. They func- nisms by which interactions between positive and nega- tion either as activators or as repressors of floral ini- tive regulators together pattern floral meristems in the tiation. This review describes the mode of their action model eudicot species A. thaliana. in a regulatory network that ensures the correct temporal and spatial control of floral meristem specification, its maintenance and determinate development. Maintenance of the shoot apical meristem and transitions in lateral meristem fate Keywords: Arabidopsis thaliana, floral activators, flo- ral mesitem specification, floral repressors. The maintenance of stem cells is brought about, at least in part, by a regulatory feedback loop between the ho- THE angiosperm embryo has a well established apical- meodomain transcription factor WUSCHEL (WUS) and basal/polar axis defined by the positions of the root and genes of the CLAVATA (CLV) signaling pathway2. WUS shoot meristems. Besides this, a basic radial pattern is is expressed in the organizing centre and confers a stem also established during embryogenesis. -
Congolius, a New Genus of African Reed Frog Endemic to The
www.nature.com/scientificreports OPEN Congolius, a new genus of African reed frog endemic to the central Congo: A potential case of convergent evolution Tadeáš Nečas1,2*, Gabriel Badjedjea3, Michal Vopálenský4 & Václav Gvoždík1,5* The reed frog genus Hyperolius (Afrobatrachia, Hyperoliidae) is a speciose genus containing over 140 species of mostly small to medium-sized frogs distributed in sub-Saharan Africa. Its high level of colour polymorphism, together with in anurans relatively rare sexual dichromatism, make systematic studies more difcult. As a result, the knowledge of the diversity and taxonomy of this genus is still limited. Hyperolius robustus known only from a handful of localities in rain forests of the central Congo Basin is one of the least known species. Here, we have used molecular methods for the frst time to study the phylogenetic position of this taxon, accompanied by an analysis of phenotype based on external (morphometric) and internal (osteological) morphological characters. Our phylogenetic results undoubtedly placed H. robustus out of Hyperolius into a common clade with sympatric Cryptothylax and West African Morerella. To prevent the uncovered paraphyly, we place H. robustus into a new genus, Congolius. The review of all available data suggests that the new genus is endemic to the central Congolian lowland rain forests. The analysis of phenotype underlined morphological similarity of the new genus to some Hyperolius species. This uniformity of body shape (including cranial shape) indicates that the two genera have either retained ancestral morphology or evolved through convergent evolution under similar ecological pressures in the African rain forests. African reed frogs, Hyperoliidae Laurent, 1943, are presently encompassing almost 230 species in 17 genera. -
§ 112 Implications for Genus Claims Lisa Larrimore Ouellette Genus and Species Claims
Advanced Patent Law Institute: Silicon Valley § 112 Implications for Genus Claims Lisa Larrimore Ouellette Genus and Species Claims genus fastener species screw R1 mammalian insulin cDNA R2 CH CH sequence 2 3 for rat CH3 insulin cDNA Genus and Species Claims: Anticipation . Single species always anticipates genus. Genus anticipates species only if species can be “at once envisaged” from genus. Generic chemical formula that represents limited number of compounds that PHOSITA can easily draw or name anticipates each compound. Generic chemical formula for vast number of compounds doesn’t anticipate each—and such a claim likely has § 112 problems… Genus and Species Claims: Section 112 . How can a patentee adequately describe and enable a genus? . When does a generic disclosure describe and enable a species? genus Disclosures required by § 112 serve not species just teaching function but also evidentiary function—showing what inventor actually possessed. Key policy lever for limiting claim scope to inventive contribution. Genus and Species Claims: Section 112 . How can a patentee adequately describe and enable a genus? . Ariad v. Eli Lilly . What is a representative number of species? . When is functional claiming ok? . When do you have to enable and describe unrecited elements? . Are § 112 genus claims only problematic in biotech? Ariad v. Eli Lilly (en banc 2010) . Genus claims for all methods of reducing binding of a certain transcription factor. inadequate description . Need “disclosure of either a representative number of species … or structural features common to the members of the genus so that one of skill in the art can ‘visualize or recognize’ the members of the genus.” . -
Development and Cell Cycle Activity of the Root Apical Meristem in the Fern Ceratopteris Richardii
G C A T T A C G G C A T genes Article Development and Cell Cycle Activity of the Root Apical Meristem in the Fern Ceratopteris richardii Alejandro Aragón-Raygoza 1,2 , Alejandra Vasco 3, Ikram Blilou 4, Luis Herrera-Estrella 2,5 and Alfredo Cruz-Ramírez 1,* 1 Molecular and Developmental Complexity Group at Unidad de Genómica Avanzada, Laboratorio Nacional de Genómica para la Biodiversidad, Cinvestav Sede Irapuato, Km. 9.6 Libramiento Norte Carretera, Irapuato-León, Irapuato 36821, Guanajuato, Mexico; [email protected] 2 Metabolic Engineering Group, Unidad de Genómica Avanzada, Laboratorio Nacional de Genómica para la Biodiversidad, Cinvestav Sede Irapuato, Km. 9.6 Libramiento Norte Carretera, Irapuato-León, Irapuato 36821, Guanajuato, Mexico; [email protected] 3 Botanical Research Institute of Texas (BRIT), Fort Worth, TX 76107-3400, USA; [email protected] 4 Laboratory of Plant Cell and Developmental Biology, Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; [email protected] 5 Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA * Correspondence: [email protected] Received: 27 October 2020; Accepted: 26 November 2020; Published: 4 December 2020 Abstract: Ferns are a representative clade in plant evolution although underestimated in the genomic era. Ceratopteris richardii is an emergent model for developmental processes in ferns, yet a complete scheme of the different growth stages is necessary. Here, we present a developmental analysis, at the tissue and cellular levels, of the first shoot-borne root of Ceratopteris. -
Developmental Regulation of the Expression of Amaryllidaceae Alkaloid Biosynthetic Genes in Narcissus Papyraceus
G C A T T A C G G C A T genes Article Developmental Regulation of the Expression of Amaryllidaceae Alkaloid Biosynthetic Genes in Narcissus papyraceus Tarun Hotchandani 1, Justine de Villers 1 and Isabel Desgagné-Penix 1,2,* 1 Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 boulevard des Forges, Trois-Rivières, QC G9A 5H7, Canada 2 Plant Biology Research Group, Trois-Rivières, QC G9A 5H7, Canada * Correspondence: [email protected]; Tel.: +1-819-376-5011 Received: 6 July 2019; Accepted: 5 August 2019; Published: 7 August 2019 Abstract: Amaryllidaceae alkaloids (AAs) have multiple biological effects, which are of interest to the pharmaceutical industry. To unleash the potential of Amaryllidaceae plants as pharmaceutical crops and as sources of AAs, a thorough understanding of the AA biosynthetic pathway is needed. However, only few enzymes in the pathway are known. Here, we report the transcriptome of AA-producing paperwhites (Narcissus papyraceus Ker Gawl). We present a list of 21 genes putatively encoding enzymes involved in AA biosynthesis. Next, a cDNA library was created from 24 different samples of different parts at various developmental stages of N. papyraceus. The expression of AA biosynthetic genes was analyzed in each sample using RT-qPCR. In addition, the alkaloid content of each sample was analyzed by HPLC. Leaves and flowers were found to have the highest abundance of heterocyclic compounds, whereas the bulb, the lowest. Lycorine was also the predominant AA. The gene expression results were compared with the heterocyclic compound profiles for each sample. In some samples, a positive correlation was observed between the gene expression levels and the amount of compounds accumulated.