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By Thesis for the Degree of Doctor of Philosophy
COMPARATIVE ANATOMY AND HISTOCHEMISTRY OF TIIE ASSOCIATION OF PUCCIiVIA POARUM WITH ITS ALTERNATE HOSTS By TALIB aWAID AL-KHESRAJI Department of Botany~ Universiiy of SheffieZd Thesis for the degree of Doctor of Philosophy JUNE 1981 Vol 1 IMAGING SERVICES NORTH Boston Spa, Wetherby West Yorkshire, lS23 7BQ www.bl.uk BEST COpy AVAILABLE. VARIABLE PRINT QUALITY TO MY PARENTS i Ca.1PARATIVE ANATCl1Y AND HISTOCHEMISTRY OF THE ASSOCIATION OF PUCCINIA POARUM WITH ITS ALTERNATE HOSTS Talib Owaid Al-Khesraji Depaptment of Botany, Univepsity of Sheffield The relationship of the macrocyclic rust fungus PUccinia poarum with its pycnial-aecial host, Tussilago fapfaPa, and its uredial-telial host, Poa ppatensis, has been investigated, using light microscopy, electron microscopy and micro-autoradiography. Aspects of the morp hology and ontogeny of spores and sari, which were previously disputed, have been clarified. Monokaryotic hyphae grow more densely in the intercellular spaces of Tussilago leaves than the dikaryotic intercellular hyphae on Poa. Although ultrastructurally sbnilar, monokaryotic hyphae differ from dikaryotic hyphae in their interaction with host cell walls, often growing embedded in wall material which may project into the host cells. The frequency of penetration of Poa mesophyll cells by haustoria of the dikaryon is greater than that of Tussilago cells by the relatively undifferentiated intracellular hyphae of the monokaryon. Intracellular hyphae differ from haustoria in their irregular growth, septation, lack of a neck-band or markedly constricted neck, the deposition of host wall-like material in the external matrix bounded by the invaginated host plasmalemma and in the association of callose reactions \vith intracellular hyphae and adjacent parts of host walls. -
Diseases of Trees in the Great Plains
United States Department of Agriculture Diseases of Trees in the Great Plains Forest Rocky Mountain General Technical Service Research Station Report RMRS-GTR-335 November 2016 Bergdahl, Aaron D.; Hill, Alison, tech. coords. 2016. Diseases of trees in the Great Plains. Gen. Tech. Rep. RMRS-GTR-335. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 229 p. Abstract Hosts, distribution, symptoms and signs, disease cycle, and management strategies are described for 84 hardwood and 32 conifer diseases in 56 chapters. Color illustrations are provided to aid in accurate diagnosis. A glossary of technical terms and indexes to hosts and pathogens also are included. Keywords: Tree diseases, forest pathology, Great Plains, forest and tree health, windbreaks. Cover photos by: James A. Walla (top left), Laurie J. Stepanek (top right), David Leatherman (middle left), Aaron D. Bergdahl (middle right), James T. Blodgett (bottom left) and Laurie J. Stepanek (bottom right). To learn more about RMRS publications or search our online titles: www.fs.fed.us/rm/publications www.treesearch.fs.fed.us/ Background This technical report provides a guide to assist arborists, landowners, woody plant pest management specialists, foresters, and plant pathologists in the diagnosis and control of tree diseases encountered in the Great Plains. It contains 56 chapters on tree diseases prepared by 27 authors, and emphasizes disease situations as observed in the 10 states of the Great Plains: Colorado, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, and Wyoming. The need for an updated tree disease guide for the Great Plains has been recog- nized for some time and an account of the history of this publication is provided here. -
Bot 316 Mycology and Fungal Physiology
BOT 316 MYCOLOGY AND FUNGAL PHYSIOLOGY Dr Osondu Akoma 2011 BOT 316 MYCOLOGY AND FUNGAL PHYSIOLOGY INTRODUCTION HISTORICAL BACKGROUND Mycology is a classical translation of the Greek word Mykes logos which means mushroom discussion, thus mycology is the study of fungi. In the past this area of science was limited to the study of mushrooms but as science developed, the scope of the subject widened far beyond the objects seen with the naked eyes with the discovery of microscopes. The development of mycology cannot be isolated from that of science. The ancestry of fungi is ancient, dating back to the Devonian and Precambrian eras. The history is also influenced by calamities and man has always kept record from time and as such the first record of fungi was not that of observing fungi directly but that of their harmful effects. The Romans and Greeks have a lot in their records. Even in the Holy Bible there are many references of the fungi and their effects; Leviticus 14: 4-48, 1Kings 8:37, Deuteronomy 28:22. The first indication that man saw fungi as food was a report of death at Icarius. The first book devoted to fungi is the Van Sterbeek’s “Theatrum Fungerium” in 1675 and this work distinguished the edible from the poisonous mushrooms. The discovery of the microscope led to the systematic study of the fungi. Robert Hooke was credited with the first illustration of micro fungi in 1667 in his work titled Micrographa . The Greeks and Romans regarded fungi as mysterious things. They were regarded as the “evil formats of the earth originating from the mouth of vipers”. -
Study of Fungi- SBT 302 Mycology
MYCOLOGY DEPARTMENT OF PLANT SCIENCES DR. STANLEY KIMARU 2019 NOMENCLATURE-BINOMIAL SYSTEM OF NOMENCLATURE, RULES OF NOMENCLATURE, CLASSIFICATION OF FUNGI. KEY TO DIVISIONS AND SUB-DIVISIONS Taxonomy and Nomenclature Nomenclature is the naming of organisms. Both classification and nomenclature are governed by International code of Botanical Nomenclature, in order to devise stable methods of naming various taxa, As per binomial nomenclature, genus and species represent the name of an organism. Binomials when written should be underlined or italicized when printed. First letter of the genus should be capital and is commonly a noun, while species is often an adjective. An example for binomial can be cited as: Kingdom = Fungi Division = Eumycota Subdivision = Basidiomycotina Class = Teliomycetes Order = Uredinales Family = Pucciniaceae Genus = Puccinia Species = graminis Classification of Fungi An outline of classification (G.C. Ainsworth, F.K. Sparrow and A.S. Sussman, The Fungi Vol. IV-B, 1973) Key to divisions of Mycota Plasmodium or pseudoplasmodium present. MYXOMYCOTA Plasmodium or pseudoplasmodium absent, Assimilative phase filamentous. EUMYCOTA MYXOMYCOTA Class: Plasmodiophoromycetes 1. Plasmodiophorales Plasmodiophoraceae Plasmodiophora, Spongospora, Polymyxa Key to sub divisions of Eumycota Motile cells (zoospores) present, … MASTIGOMYCOTINA Sexual spores typically oospores Motile cells absent Perfect (sexual) state present as Zygospores… ZYGOMYCOTINA Ascospores… ASCOMYCOTINA Basidiospores… BASIDIOMYCOTINA Perfect (sexual) state -
Master Thesis
Swedish University of Agricultural Sciences Faculty of Natural Resources and Agricultural Sciences Department of Forest Mycology and Plant Pathology Uppsala 2011 Taxonomic and phylogenetic study of rust fungi forming aecia on Berberis spp. in Sweden Iuliia Kyiashchenko Master‟ thesis, 30 hec Ecology Master‟s programme SLU, Swedish University of Agricultural Sciences Faculty of Natural Resources and Agricultural Sciences Department of Forest Mycology and Plant Pathology Iuliia Kyiashchenko Taxonomic and phylogenetic study of rust fungi forming aecia on Berberis spp. in Sweden Uppsala 2011 Supervisors: Prof. Jonathan Yuen, Dept. of Forest Mycology and Plant Pathology Anna Berlin, Dept. of Forest Mycology and Plant Pathology Examiner: Anders Dahlberg, Dept. of Forest Mycology and Plant Pathology Credits: 30 hp Level: E Subject: Biology Course title: Independent project in Biology Course code: EX0565 Online publication: http://stud.epsilon.slu.se Key words: rust fungi, aecia, aeciospores, morphology, barberry, DNA sequence analysis, phylogenetic analysis Front-page picture: Barberry bush infected by Puccinia spp., outside Trosa, Sweden. Photo: Anna Berlin 2 3 Content 1 Introduction…………………………………………………………………………. 6 1.1 Life cycle…………………………………………………………………………….. 7 1.2 Hyphae and haustoria………………………………………………………………... 9 1.3 Rust taxonomy……………………………………………………………………….. 10 1.3.1 Formae specialis………………………………………………………………. 10 1.4 Economic importance………………………………………………………………... 10 2 Materials and methods……………………………………………………………... 13 2.1 Rust and barberry -
Abstract Olson, Eric Leonard
1 ABSTRACT 2 OLSON, ERIC LEONARD. Characterization of Stem Rust Resistance in US Wheat 3 Germplasm. (Under the direction of Gina Brown-Guedira.) 4 5 In 1999 in Uganda a race of stem rust, Puccinia gramins f. sp. tritici was 6 identified with virulence to Sr31. This race, designated as TTKS based on the North 7 American nomenclature system, combined Sr31 virulence with virulence to the majority 8 of Triticum aestivum L. derived stem rust resistance genes. The development of resistant 9 cultivars is needed as TTKS may reach global dispersal due to its unique virulence to 10 multiple known and unknown resistance genes and widespread cultivar susceptibility. 11 The ability to detect the presence of specific stem rust resistance genes using molecular 12 markers presents a viable method for identifying resistance to race TTKS in the absence 13 of the pathogen itself. The frequency of DNA markers associated with resistance genes 14 Sr24, Sr26, Sr36, and Sr1RSAmigo which confer resistance to TTKS was assessed in 15 diverse wheat cultivars and breeding lines from breeding programs throughout the United 16 States. The reliability of these markers in predicting the presence of the resistance genes 17 in diverse germplasm was evaluated through comparison with phenotypic data. 18 Introgression of undeployed seedling resistance genes is necessary to improve the 19 availability of resistance to TTKS. The stem rust resistance gene Sr22 confers resistance 20 to TTKS. Sr22 is present on a chromosomal translocation derived from Triticum 21 boeoticum Boiss. which is homoeologous to the A genome of T. aesitivum Linkage 22 analysis of SSR loci on 7AL was done to identify the loci most closely linked to Sr22. -
Auaust 17, 1929] NATURE 267
AuausT 17, 1929] NATURE 267 anxiety, especially among biologists, who are used to pycniospores of one sex are applied to a pycnium of checking the adequacy of their methods by control opposite sex, the pycniospores are stimulated to experiments. The difficulty of obtaining decisive germinate and to produce haploid hyphoo which grow results often flows from heterogeneity of material, down to the hypha! wefts near the lower epidermis and often from causes of bias, often, too, from the diffi there fuse with cells of opposite sex. The solution of culty of setting up an experiment in such a way as to the p:oblem of tracing the hyphoo from the germinating obtain a valid estimate of error. I have never known pycmospores to the base of the oocium must await difficulty to arise in biological work from imperfect further investigation. W. F. HANNA. normality of the variation, often though I have Dominion Rust Research Laboratory, examined data for this particular cause of difficulty; Winnipeg, June 24. nor is there, I believe, any case to the contrary in the literature. This is not to say that the deviation from The Crystal Structure of Solid Nitrogen. " Student's " t-distribution found by Shewhart and RECENT researches on the luminescence of solidified Winters, for samples from rectangular and triangular gases have shown that systems consisting of mixtures distributions, may not have a real application in some of nitrogen with inert gases give a great variety of technological work, but rather that such deviations oscillatory bands, which are intimately connected have not been found, and are scarcely to be looked for, with the oscillations which the nitrogen atoms are in biological research as ordinarily conducted. -
Objective Plant Pathology
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/305442822 Objective plant pathology Book · July 2013 CITATIONS READS 0 34,711 3 authors: Surendra Nath M. Gurivi Reddy Tamil Nadu Agricultural University Acharya N G Ranga Agricultural University 5 PUBLICATIONS 2 CITATIONS 15 PUBLICATIONS 11 CITATIONS SEE PROFILE SEE PROFILE Prabhukarthikeyan S. R ICAR - National Rice Research Institute, Cuttack 48 PUBLICATIONS 108 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Management of rice diseases View project Identification and characterization of phytoplasma View project All content following this page was uploaded by Surendra Nath on 20 July 2016. The user has requested enhancement of the downloaded file. Objective Plant Pathology (A competitive examination guide)- As per Indian examination pattern M. Gurivi Reddy, M.Sc. (Plant Pathology), TNAU, Coimbatore S.R. Prabhukarthikeyan, M.Sc (Plant Pathology), TNAU, Coimbatore R. Surendranath, M. Sc (Horticulture), TNAU, Coimbatore INDIA A.E. Publications No. 10. Sundaram Street-1, P.N.Pudur, Coimbatore-641003 2013 First Edition: 2013 © Reserved with authors, 2013 ISBN: 978-81972-22-9 Price: Rs. 120/- PREFACE The so called book Objective Plant Pathology is compiled by collecting and digesting the pertinent information published in various books and review papers to assist graduate and postgraduate students for various competitive examinations like JRF, NET, ARS conducted by ICAR. It is mainly helpful for students for getting an in-depth knowledge in plant pathology. The book combines the basic concepts and terminology in Mycology, Bacteriology, Virology and other applied aspects. -
New Species and Reports of Rust Fungi (Basidiomycota, Uredinales) of South America
Mycol Progress (2007) 6:27–34 DOI 10.1007/s11557-006-0522-9 ORIGINAL ARTICLE New species and reports of rust fungi (Basidiomycota, Uredinales) of South America Reinhard Berndt & Anja Rössel & Francisco Freire Received: 12 July 2006 /Revised: 12 December 2006 /Accepted: 13 December 2006 / Published online: 30 January 2007 # German Mycological Society and Springer-Verlag 2007 Abstract Four new species of rust fungi (Basidiomycota, Introduction Uredinales) are proposed: Edythea soratensis on Berberis phyllacantha (Berberidaceae), Prospodium bicristatum on Rust specimens collected recently in Brazil and Peru and a Mansoa sp. (Bignoniaceae), Uromyces cearensis on Ipo- herbarium specimen originating from Bolivia were found to moea sp. (Convolvulaceae) and Uredo cavernula on Ribes represent species that are new to science. The present paper weberbaueri (Grossulariaceae). U. cavernula most proba- aims to contribute to the knowledge of the rust mycobiota bly belongs to the genus Goplana. Phakopsora phyllanthi of these countries by a detailed description and illustrations and Phakopsora vernoniae are newly reported for Brazil of the new species. and the New World. The uredinial stage of the latter is the same as Uredo toroiana, known so far from Hispaniola in the Caribbean. The parasitic mycelium of Esalque holwayi Materials and methods was studied. It is strictly intracellular but comprises well- defined haustoria and intracellular hyphae. Spores and hand sections of herbarium material were mounted in lactophenol and gently heated to boiling. The preparations were examined with C. Zeiss “Axioskop” or “Axiophot” light microscopes, and photographs were taken Taxonomical novelties with a C. Zeiss MC-80 camera on Kodak Ektachrome 64 Edythea soratensis Ritschel Professional slide film. -
Organization Op the Telial Sorus in the Pine Rust, Gallowaya Pinícola Arth 1
ORGANIZATION OP THE TELIAL SORUS IN THE PINE RUST, GALLOWAYA PINÍCOLA ARTH 1 By B. O. DODGE Pathologist, Fruit-Disease Investigations, Bureau of Plant Industry, United States Department of Agriculture INTRODUCTION The short-cycled pine rust now commonly referred to as Gallowaya (2)2 was first reported under the name Coleosporium pini by Galloway (9), who later (10) described its effects on the host Pinus virginiana. Although he was not fully aware of the exact nature of the germina- tion of the teleutospores, he figured in some detail various stages in the development of the elements of the sorus and brought out some of the most characteristic features of the fungus. The writer was enabled to make a further study of the fungus from material furnished by W. W. Diehl, who collected quantities of the rust for him in the vicinity of Washington, D. C. It will be shown that there is formed a distinct and persistent peridial buffer structure which functions in rupturing the leaf tissues overlying the ^oung sorus and that, following cell fusions, teleutospores are borne in chains. The spores are not sessile in the sense that only one spore is cut off from a basal cell as in Coleosporium. Neither does the basal cell bud to form the spores as in ruccinia. , ,. ,T 4 THE GAMETOPHYTIC ELEMENTS As no one had questioned the results of Galloway's infection work in demonstrating that the rust is short-pycled, it was to be expected that the cells of the mycelium in the pine leaf would be uninucfeated. This is clearly the case. -
ASCOMYCOTINA the 'Sac Fungi'
ASCOMYCOTINA The ‘Sac fungi’ General character of ASCOMYCOTINA • Largest group of fungi – more than 32,000 species in 3,400 genera • Name derived from Greek word: askos – bag or bladder and mykes – fungus • Sexually produced spores (ascospores) are contained within a sac (ascus) • Include both saprophytic and parasitic species • Some are symbionts – about 40% of lichen have ascomycotina members as fungal partner • Majority are terrestrial but few are aquatic – marine and fresh water Vegetative structure • Thallus may be unicellular (Yeast) or mycelial • Mycelium is well developed with branched and septate hyphae • Septa with simple pore • Hyphae compactly or loosely arranged • Mycelium may be homokaryotic – all neclei are genetically similar or heterokaryotic – nuclei are genetically different • Some members (Eg. Xylaria, Claviceps) form hyphal aggregations – Stroma, Sclerotium Reproduction • Asexual or Sexual reproduction Asexual reproduction • By formation of spores • Conidia, Oidia or Chlamydospores Conidia • Important mode of asexual reproduction in Ascomycotina • Exogenous, non-motile spores • Produced on tip of conidiophores – branched or unbranced / unicellular or multicellular • Single or many chains of conidia are formed on a conidiophore • Conidia are generally formed basipetally • Formation of conidia on conidiophore (conidiogenesis) occurs in two ways – Blastic conidiogenesis: conidium develops by blowing out of wall of a cell, usually from the tip of a hypha – Thallic conidiogenesis: conidium develops from a pre-existing -
Tamilnadu Board Class 11 Bio-Botany Chapter 1
Unit I: Diversity of Living World Chapter 1 Living World Learning Objectives The learner will be able to, • Differentiate living and non-living things. • Appreciate the attributes of living organisms. • Compare the different classifications proposed by biologists. • Recognize the general characters, structure and reproduction of Bacteria. • Identify the characteristic features of Archaebacteria, Cyanobacteria, Earth was formed some 4.6 billion years Mycoplasma and Actinomycetes. ago. It is the life supporting planet with • Describe the characteristic features land forms like mountains, plateaus, of fungi. glaciers, etc., Life on earth exists within • Discuss on the structure and uses a complex structure called biosphere. of Mycorrhizae and Lichens. There exist many mysteries and wonders in the living world some are not visible but the activity of some capture the attention of all. For example the response Chapter Outline of sun flower to the sunlight, the twinkling 1.1 Attributes of Living firefly in the dark forest, the rolling water organisms droplets on the surface of lotus leaf, the closure of the leaf of venus fly trap on 1.2 Viruses insect touch and a squid squeezing ink to 1.3 Classification of escape from its predator. From this it is Living world clear that the wonder planet earth harbors 1.4 Bacteria both landforms and life forms. Have you 1.5 Fungi thought of DNA molecule? It is essential for the regulation of life and is made up 1 TN_GOVT_BOTANY_XI_Page 001-041 CH01.indd 1 02-06-2018 13:43:38 of carbon, hydrogen, oxygen, nitrogen cells. Therefore, growth in living thing is and phosphorus thus nonliving and living intrinsic.