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BOTANY,Semester 02,MBOTCC 06,Contemporary System of Classification:Armen Takhtajan,D.K.Jha (Lecture Series No
BOTANY,Semester 02,MBOTCC 06,Contemporary system of classification:Armen Takhtajan,D.K.Jha (lecture series no. 06). ARMEN TAKHTAJAN (B.1910) was Head of the Dept. Of Plant Science at Leningrad,Russia.He presented a system of classification of Angiosperms for the first in 1942 and thereafter it’s revised versions in 1954,1966,1969 and finally in 1980 in his book in English entitled Flowering Plants ;Origin and Dispersal.His system is basically inspired by Bassey_Hallier tradition as he also considered evidences from fields like Morphology,Anatomy, Embryology, Cytology,Palynology ,Chemistry etc. According to Takhtajan angiosperms aremonophyletic in origin and have derived from Gymnosperms.Monocots are derived from some primitive dicots. Takhtajans classification is based on some phyletic principles: 1Woody plants are primitive than herbaceous plants. 2.Deciduous woody plants are derived from evergreen plants. 3.Stomata without subsidiary cells are more advanced than stomata with subsidiary cells. 4 .Alternate lead phyllotaxy is more primitive than other types. 5.Parallel venation is advanced. 6.Cymose inflorescence is primitive than racehorse. 7.Polymerous flowers are primitive. 8 Pollen with smooth exine is primitive than sculptured exine. 9. Apocarpous gynoecium is more primitive than syncarpous. 10.Bitegmic ovules are more primitive than unitegmic. 11.Anatropous ovules are more primitive than others. 12.Polygonum type embryosac is most primitive. 13.Porogamic condition is more primitive than mesogamic and chalazogamic. 14. Many seeded follicle fruits are most primitive. 15. Endospermic seeds are primitive.Dicot embryo is primitive than monocot embryo. Brief outline of Takhtajans system Takhtajan has replaced traditional nomenclature of Angiosperm,Dicotyledonae and Monocotyledonae by Magnoliophyta,Magnoliopsida and Liliopsida respectively. -
Genome Sequence Analysis of Auricularia Heimuer Combined with Genetic Linkage Map
Journal of Fungi Article Genome Sequence Analysis of Auricularia heimuer Combined with Genetic Linkage Map Ming Fang 1, Xiaoe Wang 2, Ying Chen 2, Peng Wang 2, Lixin Lu 2, Jia Lu 2, Fangjie Yao 1,2,* and Youmin Zhang 1,* 1 Lab of genetic breeding of edible mushromm, Horticultural, College of Horticulture, Jilin Agricultural University, Changchun 130118, China; [email protected] 2 Engineering Research Centre of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China; [email protected] (X.W.); [email protected] (Y.C.); [email protected] (P.W.); [email protected] (L.L.); [email protected] (J.L.) * Correspondence: [email protected] (F.Y.); [email protected] (Y.Z.) Received: 3 March 2020; Accepted: 12 March 2020; Published: 16 March 2020 Abstract: Auricularia heimuer is one of the most popular edible fungi in China. In this study, the whole genome of A. heimuer was sequenced on the Illumina HiSeq X system and compared with other mushrooms genomes. As a wood-rotting fungus, a total of 509 carbohydrate-active enzymes (CAZymes) were annotated in order to explore its potential capabilities on wood degradation. The glycoside hydrolases (GH) family genes in the A. heimuer genome were more abundant than the genes in the other 11 mushrooms genomes. The A. heimuer genome contained 102 genes encoding class III, IV, and V ethanol dehydrogenases. Evolutionary analysis based on 562 orthologous single-copy genes from 15 mushrooms showed that Auricularia formed an early independent branch of Agaricomycetes. The mating-type locus of A. heimuer was located on linkage group 8 by genetic linkage analysis. -
A Revision of Schoenobryum (Cryphaeaceae, Bryopsida) in Africa1
Revision of Schoenobryum 147 Tropical Bryology 24: 147-159, 2003 A revision of Schoenobryum (Cryphaeaceae, Bryopsida) in Africa1 Brian J. O’Shea 141 Fawnbrake Avenue, London SE24 0BG, U.K. Abstract. The nine species and two varieties of Schoenobryum reported for Africa were investigated, and no characters were found that uniquely identified any of the taxa to be other than the pantropical Schoenobryum concavifolium. The following nine names become new synonyms of S. concavifolium: Cryphaea madagassa, C. subintegra, Acrocryphaea robusta, A. latifolia, A. subrobusta, A. tisserantii, A. latifolia var. microspora, A. plicatula and A. subintegra var. idanreense; a lectotype is selected for Acrocryphaea latifolia var. microspora P.de la Varde. INTRODUCTION as the majority have not been examined since the type description, and many have never been A recent checklist of Sub-Saharan Africa illustrated. (O’Shea, 1999) included nine species and two varieties of Schoenobryum, most of quite limited The purpose of this paper is to provide an distribution. Recent collecting in both Malawi overview of the genus worldwide, and to review (O’Shea et al., 2001) and Uganda (Wigginton et the taxonomic position of the African taxa. al., 2001) has shown the genus to be not uncommon, although there was only one CRYPHAEACEAE SCHIMP. 1856. previously published collection from the two countries (O’Shea, 1993). Apart from one Cryphaeaceae Schimp., Coroll. Bryol. Eur. 97. African taxon occurring in nine countries, the 1856 [‘1855’]. Type: Cryphaea D.Mohr in other 10 occurred in an average of 1.7 countries. F.Weber This particular profile is typical of unrevised genera in Africa, and indicative of a possible A brief review of the circumscription and need for revision (O’Shea, 1997), particularly systematics of the family, and the distinctions from related families (e.g. -
Red Algae (Bangia Atropurpurea) Ecological Risk Screening Summary
Red Algae (Bangia atropurpurea) Ecological Risk Screening Summary U.S. Fish & Wildlife Service, February 2014 Revised, March 2016, September 2017, October 2017 Web Version, 6/25/2018 1 Native Range and Status in the United States Native Range From NOAA and USGS (2016): “Bangia atropurpurea has a widespread amphi-Atlantic range, which includes the Atlantic coast of North America […]” Status in the United States From Mills et al. (1991): “This filamentous red alga native to the Atlantic Coast was observed in Lake Erie in 1964 (Lin and Blum 1977). After this sighting, records for Lake Ontario (Damann 1979), Lake Michigan (Weik 1977), Lake Simcoe (Jackson 1985) and Lake Huron (Sheath 1987) were reported. It has become a major species of the littoral flora of these lakes, generally occupying the littoral zone with Cladophora and Ulothrix (Blum 1982). Earliest records of this algae in the basin, however, go back to the 1940s when Smith and Moyle (1944) found the alga in Lake Superior tributaries. Matthews (1932) found the alga in Quaker Run in the Allegheny drainage basin. Smith and 1 Moyle’s records must have not resulted in spreading populations since the alga was not known in Lake Superior as of 1987. Kishler and Taft (1970) were the most recent workers to refer to the records of Smith and Moyle (1944) and Matthews (1932).” From NOAA and USGS (2016): “Established where recorded except in Lake Superior. The distribution in Lake Simcoe is limited (Jackson 1985).” From Kipp et al. (2017): “Bangia atropurpurea was first recorded from Lake Erie in 1964. During the 1960s–1980s, it was recorded from Lake Huron, Lake Michigan, Lake Ontario, and Lake Simcoe (part of the Lake Ontario drainage). -
The Discovery of Pulmonary Circulation: from Imhotep to William Harvey
The discovery of pulmonary circulation: From Imhotep to William Harvey Mohamed ElMaghawry1,2 *, Alberto Zanatta2, and Fabio Zampieri2 1: Department of Cardiology, Aswan Heart Centre, Aswan, Egypt 2: Department of Cardiac, Thoracic and Vascular Science, University of Padua, Padua, Italy * [email protected] Abstract In his quest to comprehend his existence, Man has long been exploring his outer world (macro- cosmos), as well as his inner world (micro-cosmos). In modern times, monmental advances in the fields of physics, chemistry, and other natural sciences have reflected on how we understand the anatomy and physiology of the human body and circulation. Yet, humanity took a long and winding road to reach what we acknowledge today as solid facts of cardiovascular physiology. In this article, we will review some of the milestones along this road. “The history of the pulmonary circulation provides a measure of Man’s thinking about himself and his place in the Universe.” (1) Alfred P. Fishman (1918-1990), president of American Physiological Society. The heart in ancient Egyptian medicine The ancient Egyptians considered the heart as the central organ of the body, both physiologically and spiritually. The earliest hieroglyphic depiction of the heart was as an organ with eight vessels attached to it (Figure 1A). After the third Dynasty, the heart was modified to a simpler jar-shape (Figure 1B) (2). The Smith papyrus (ca. 1600 BC) is the oldest known surgical treatise on trauma. It was named after Edwin Smith, the American Egyptologist who purchased the scroll in Luxor in 1862. Many historians believe that the text of the Smith papyrus was copied from a much older document originally written by Imhotep, the prominent high priest and physician of the Old Kingdom (ca.3000-2500 BC). -
27April12acquatic Plants
International Plant Protection Convention Protecting the world’s plant resources from pests 01 2012 ENG Aquatic plants their uses and risks Implementation Review and Support System Support and Review Implementation A review of the global status of aquatic plants Aquatic plants their uses and risks A review of the global status of aquatic plants Ryan M. Wersal, Ph.D. & John D. Madsen, Ph.D. i The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO) concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The mention of speciic companies or products of manufacturers, whether or not these have been patented, does not imply that these have been endorsed or recommended by FAO in preference to others of a similar nature that are not mentioned.All rights reserved. FAO encourages reproduction and dissemination of material in this information product. Non-commercial uses will be authorized free of charge, upon request. Reproduction for resale or other commercial purposes, including educational purposes, may incur fees. Applications for permission to reproduce or disseminate FAO copyright materials, and all queries concerning rights and licences, should be addressed by e-mail to [email protected] or to the Chief, Publishing Policy and Support Branch, Ofice of Knowledge Exchange, -
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MarLIN Marine Information Network Information on the species and habitats around the coasts and sea of the British Isles Dabberlocks (Alaria esculenta) MarLIN – Marine Life Information Network Biology and Sensitivity Key Information Review Dr Harvey Tyler-Walters 2008-05-29 A report from: The Marine Life Information Network, Marine Biological Association of the United Kingdom. Please note. This MarESA report is a dated version of the online review. Please refer to the website for the most up-to-date version [https://www.marlin.ac.uk/species/detail/1291]. All terms and the MarESA methodology are outlined on the website (https://www.marlin.ac.uk) This review can be cited as: Tyler-Walters, H., 2008. Alaria esculenta Dabberlocks. In Tyler-Walters H. and Hiscock K. (eds) Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. DOI https://dx.doi.org/10.17031/marlinsp.1291.1 The information (TEXT ONLY) provided by the Marine Life Information Network (MarLIN) is licensed under a Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales License. Note that images and other media featured on this page are each governed by their own terms and conditions and they may or may not be available for reuse. Permissions beyond the scope of this license are available here. Based on a work at www.marlin.ac.uk (page left blank) Date: 2008-05-29 Dabberlocks (Alaria esculenta) - Marine Life Information Network See online review for distribution map Exposed sublittoral fringe bedrock with Alaria esculenta, Isles of Scilly. -
Anthurium Andraeanum) As a Cut Flower in Bangladesh
Journal of Bangladesh Academy of Sciences, Vol. 37, No. 1, 103-107, 2013 VARIETAL STUDY OF ANTHURIUM (ANTHURIUM ANDRAEANUM) AS A CUT FLOWER IN BANGLADESH M.S. ISLAM, H. MEHRAJ, M.Z.K. RONI, S. SHAHRIN AND A.F.M. JAMAL UDDIN* Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh ABSTRACT Five varieties viz., Caesar, Aymara, Ivory, Jewel, and Triticaca were in use for the study in Randomized Complete Block Design with five replications. Significant differences among cultivars were noted for all attributes evaluated. Variety ‘Triticaca’ had maximum stalk length and diameter, spathe length and breadth, spadix length, vase life and flowers per plant. Through present analysis it is noticed that, variety ‘Titicaca’ are exceedingly preferred because of its attractive flowers, excellent flower size, yield potentiality and long shelf life. Key words: Anthurium, Cut flower, Vase life INTRODUCTION Anthurium (Anthurium andraeanum) is a slow-growing perennial flowering plant that requires shady, humid conditions as found in tropical forests. The genus anthurium is evergreen and belongs to the family Araceae as the plant possesses an underground rhizome with adventitious roots, characteristic of the family. Anthurium characteristically produces numerous inflorescences subtended by brightly colored spathes, which are carried on long, slender peduncles. Spathes are characteristically heart-shaped, flat, puckered and shiny and flowers have a wide range of spathe colors viz., white, pink, salmon-pink, red, light-red, dark-red, brown, green, lavender, cream or multi-colored. The colorful spathe is long-lasting. However, the ‘true’ flowers are found on the spadix and have large numbers of pistils, each surrounded by four stamens. -
Historical Review of Systematic Biology and Nomenclature - Alessandro Minelli
BIOLOGICAL SCIENCE FUNDAMENTALS AND SYSTEMATICS – Vol. II - Historical Review of Systematic Biology and Nomenclature - Alessandro Minelli HISTORICAL REVIEW OF SYSTEMATIC BIOLOGY AND NOMENCLATURE Alessandro Minelli Department of Biology, Via U. Bassi 58B, I-35131, Padova,Italy Keywords: Aristotle, Belon, Cesalpino, Ray, Linnaeus, Owen, Lamarck, Darwin, von Baer, Haeckel, Sokal, Sneath, Hennig, Mayr, Simpson, species, taxa, phylogeny, phenetic school, phylogenetic school, cladistics, evolutionary school, nomenclature, natural history museums. Contents 1. The Origins 2. From Classical Antiquity to the Renaissance Encyclopedias 3. From the First Monographers to Linnaeus 4. Concepts and Definitions: Species, Homology, Analogy 5. The Impact of Evolutionary Theory 6. The Last Few Decades 7. Nomenclature 8. Natural History Collections Glossary Bibliography Biographical Sketch Summary The oldest roots of biological systematics are found in folk taxonomies, which are nearly universally developed by humankind to cope with the diversity of the living world. The logical background to the first modern attempts to rationalize the classifications was provided by Aristotle's logic, as embodied in Cesalpino's 16th century classification of plants. Major advances were provided in the following century by Ray, who paved the way for the work of Linnaeus, the author of standard treatises still regarded as the starting point of modern classification and nomenclature. Important conceptual progress was due to the French comparative anatomists of the early 19th century UNESCO(Cuvier, Geoffroy Saint-Hilaire) – andEOLSS to the first work in comparative embryology of von Baer. Biological systematics, however, was still searching for a unifying principle that could provide the foundation for a natural, rather than conventional, classification.SAMPLE This principle wasCHAPTERS provided by evolutionary theory: its effects on classification are already present in Lamarck, but their full deployment only happened in the 20th century. -
Effect of Media Type and BAP Concentrations on Micropropagation During Multiplication Stage on Ponytail Palm (Beaucarnea Recurvata Lem.) Abdel Kawy, Waly; Yehia M
Hortscience Journal of Suez Canal University, 2018 Effect of Media Type and BAP Concentrations on Micropropagation during Multiplication Stage on Ponytail Palm (Beaucarnea recurvata Lem.) Abdel Kawy, Waly; Yehia M. Abdel Fattah and Ali A. Shoman Department of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt. Received: 28/10/2018 Abstract: Ponytail palm (Beaucarnea recurvet Lem.; Family Asparagaceae) is one of the most important plants in the internal and external coordination. This work was carried out to study the effect of media type (MS, B5 and WPM) and Benzylaminopurine BAP at 0, 0.2, 0.4 and 0.6 mg/l during multiplication stage. The shoot tips were collected from in vitro seedlings cultured on MS medium without growth regulators. B5 medium supplemented with 0.4 mg/l (BAP) increased number of shoots (3.40 shoots/clump) and number of leaves (24) plant compared with other treatments. The B5 medium is preferable within mass production and featured commercial. The BAP Concentration 0.4 mg/l promotes shoots initiation and development with B5 medium more than MS and WPM. Keywords: Ponytail palm, Beaucarnea recurvata, tissue culture, micropropagation, BAP, media type, MS, B5, WPM INTRODUCTION MATERIALS AND METHODS Beaucarnea (Asparagaceae) is a Mexican and This study was carried out in the plant tissue Guatemalan genus that inhabits dry tropical areas. Most culture laboratory in the Department of Horticulture, of the species are endangered under the Mexican Faculty of Agriculture, Suez Canal University, Ismailia legislation because they have a high horticultural during the period 2013 – 2015. demand and are threatened by habitat destruction. -
Ornamental Garden Plants of the Guianas, Part 3
; Fig. 170. Solandra longiflora (Solanaceae). 7. Solanum Linnaeus Annual or perennial, armed or unarmed herbs, shrubs, vines or trees. Leaves alternate, simple or compound, sessile or petiolate. Inflorescence an axillary, extra-axillary or terminal raceme, cyme, corymb or panicle. Flowers regular, or sometimes irregular; calyx (4-) 5 (-10)- toothed; corolla rotate, 5 (-6)-lobed. Stamens 5, exserted; anthers united over the style, dehiscing by 2 apical pores. Fruit a 2-celled berry; seeds numerous, reniform. Key to Species 1. Trees or shrubs; stems armed with spines; leaves simple or lobed, not pinnately compound; inflorescence a raceme 1. S. macranthum 1. Vines; stems unarmed; leaves pinnately compound; inflorescence a panicle 2. S. seaforthianum 1. Solanum macranthum Dunal, Solanorum Generumque Affinium Synopsis 43 (1816). AARDAPPELBOOM (Surinam); POTATO TREE. Shrub or tree to 9 m; stems and leaves spiny, pubescent. Leaves simple, toothed or up to 10-lobed, to 40 cm. Inflorescence a 7- to 12-flowered raceme. Corolla 5- or 6-lobed, bluish-purple, to 6.3 cm wide. Range: Brazil. Grown as an ornamental in Surinam (Ostendorf, 1962). 2. Solanum seaforthianum Andrews, Botanists Repository 8(104): t.504 (1808). POTATO CREEPER. Vine to 6 m, with petiole-tendrils; stems and leaves unarmed, glabrous. Leaves pinnately compound with 3-9 leaflets, to 20 cm. Inflorescence a many- flowered panicle. Corolla 5-lobed, blue, purple or pinkish, to 5 cm wide. Range:South America. Grown as an ornamental in Surinam (Ostendorf, 1962). Sterculiaceae Monoecious, dioecious or polygamous trees and shrubs. Leaves alternate, simple to palmately compound, petiolate. Inflorescence an axillary panicle, raceme, cyme or thyrse. -
On the Higher Taxa of Embryobionta Author(S): Arthur Cronquist, Armen Takhtajan and Walter Zimmermann Source: Taxon, Vol
On the Higher Taxa of Embryobionta Author(s): Arthur Cronquist, Armen Takhtajan and Walter Zimmermann Source: Taxon, Vol. 15, No. 4 (Apr., 1966), pp. 129-134 Published by: International Association for Plant Taxonomy (IAPT) Stable URL: http://www.jstor.org/stable/1217531 . Accessed: 05/04/2014 08:26 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 This content downloaded from 212.238.120.34 on Sat, 5 Apr 2014 08:26:21 AM All use subject to JSTOR Terms and Conditions APRIL 1966 VOL. XV No. 4 f TAXON"""" News Bulletin of the International Association for Plant Taxonomy. - Published by the InternationalBureau for Plant Taxonomy and Nomenclature, 106 Lange Nieuwstraat, Utrecht, Netherlands ON TIHE HIGHER TAXA OF EMBRYOBIONTA Arthur Cronquist (New York), Armen Takhtajan (Leningrad) and Walter Zimmermann (Tiibingen) The general system of plants and the nomenclature of higher taxa at the level of divisions and classes are now unstable and in a state of confusion. The well known schemes of classification by which all plants are grouped into only 4 or 5 divisions have been largely abandoned because they do not adequately reflect the great diversity within the plant kingdom.