Download or read book Guide to Plant Spores written by Florence J Martin and published by . This book was released on 2020-08-21 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spore, a reproductive cell capable of developing into a new individual without fusion with another reproductive cell. Spores thus differ from gametes, which are reproductive cells that must fuse in pairs in order to give rise to a new individual. Spores are agents of asexual reproduction, whereas gametes are agents of sexual reproduction. Spores are produced by bacteria, fungi, algae, and plants.Bacterial spores serve largely as a resting, or dormant, stage in the bacterial life cycle, helping to preserve the bacterium through periods of unfavourable conditions. Spore production is particularly common among Bacillus and Clostridium bacteria, several species of which are disease-causing. Many bacterial spores are highly durable and can germinate even after years of dormancy.Bacillus megaterium, an endospore-forming bacterium. The nearly mature spore is visible within the mother cell (magnified about 17,000 times).Among the fungi, spores serve a function analogous to that of seeds in plants. Produced and released by specialized fruiting bodies, such as the edible portion of the familiar mushrooms, fungal spores germinate and grow into new individuals under suitable conditions of moisture, temperature, and food availability.Many larger algae reproduce by spores and are also capable of sexual reproduction. A number of red algae species produce monospores (walled nonflagellate spherical cells) that are carried by water currents and form a new organism upon germination. Some green algae produce nonmotile spores, called aplanospores, whereas others produce motile zoospores, which lack true cell walls and bear one or more flagella. The flagella allow zoospores to swim to a favourable environment in which to develop, whereas monospores and aplanospores must rely on passive transport by water currents.Among plants-all of which have a life cycle characterized by alternating generations of asexually and sexually reproducing individuals-spores are the reproductive agents of the asexual generation. Produced by the sporophyte (i.e., spore-bearing) generation, plant spores give rise to the haploid gametophyte (i.e., gamete-bearing) generation. Spores are most conspicuous in the non-seed-bearing plants, including liverworts, hornworts, mosses, and ferns. In these lower plants, as in fungi, the spores function much like seeds. In general, the parent plant sheds the spores locally; the spore-generating organs are frequently located on the undersides of leaves. The spores of plants that inhabit the edges of bogs or lakes are frequently shed into the water or are carried there by rain and are preserved in the sediments. Wind dispersal is a factor in plants that shed their spores explosively.Among the seed-bearing plants-the gymnosperms and the angiosperms-the haploid spores are far less conspicuous. They are not released from the parent plant, but rather they germinate into microscopic gametophyte individuals that are entirely dependent upon the diploid sporophyte plant. Gymnosperms and angiosperms form two kinds of spores: microspores, which give rise to male gametophytes, and megaspores, which produce female gametophytes.
Download or read book The Fungal Spore and Disease Initiation in Plants and Animals written by G.T. Cole and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: This treatise is focused on early aspects of fungal pathogenesis in plant and animal hosts. Our aim in choosing the topics and contributors was to demonstrate common approaches to studies of fungal-plant and fungal-animal interactions, particularly at the biochemical and molecular Ievels. For example, the initial events of adh«sion of fungal spores to the exposed surface tissues of the host are essential for subsequent invasion of the plant or animal and establishment of pathogenesis. A point of consensus among investigators who have directed their attention to such events in plants, insects, and vertebrates isthat spore adhesion to the host cuticle or epithelium is more than a simple binding event. lt is a complex and potentially pivotal process in fungal-plant interactions which "may involve the secretion of ftuids that prepare the infection court for the development of morphological stages of the germling" and subsequent invasion of the host (Nicholson and Epstein, Chapter 1). The attachment of the fungal propagule to the arthropod cuticle is also "mediated by the chemical components present on the outer layer of the spore wall and the epicuticle . . . . Initial attachment may be reinforced further by either the active secretion of adhesive materials or the modification of spore wall materiallocated at the [fungal spore arthropod] cuticle interface (Boucias and Pendland, Chapter 5).
Download or read book Fossil Plants and Spores written by Tim P. Jones and published by Geological Society of London. This book was released on 1999 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Spores and Other Microfossils from Upper Devonian and Lower Mississippian Rocks of Ohio written by Marcia R. Winslow and published by . This book was released on 1962 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stratigraphic occurrence, systemic classification, and illustration of plant microfossils.
Download or read book The Air Spora written by Maureen E. Lacey and published by Springer Science & Business Media. This book was released on 2007-02-03 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an illustrated guide to trapping, identifying and quantifying airborne biological particles such as fungus, plant spores and pollen. Including a comprehensive review of what is in the air and detailing the historical development of theories leading to modern aerobiology, the book explains the fundamental processes behind airborne dispersal and techniques used to sample, identify and quantify biological particles. Includes photographs and 9 colour reproductions of paintings of airborne particles.
Download or read book Aerial Dispersal of Pollen and Spores written by Donald E. Aylor and published by . This book was released on 2017 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microspores Evolution and Ontogeny written by S. Blackmore and published by Academic Press. This book was released on 2016-04-20 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: An understanding of the processes of plant reproduction is increasingly important in the exploitation of plant resources. Microspore formation is a major event in the life cycles of land plants, allowing the transition from diploid sporophyte generation to the haploid gametophyte generation, and varies greatly between taxa in the diversity of processes involved. Despite the wealth of information available, there are very few sources which bring together the results of research work on the reproduction in all the major plant groups.**Microspores fills this gap by reviewing microsporogenesis from a systematic and evolutionary perspective in groups ranging from algae to angiosperms. Special chapters focus on structure, function, cell and molecular processes, and potential biotechnological applications of plant spores and pollen. The result is an up-to-date guide to the applications of modern techniques in the classic area of botany.**This work bridges several disciplines to provide a coherent and authoritative account which will be essential reading for research scientists and lecturers in botany, evolution, ultrastructure, reproductive and developmental biology, and palynology.
Download or read book Pollen and Spores written by S N Agashe and published by CRC Press. This book was released on 2019-10-16 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Palynology finds applications in various fields. Some of them are taxonomy, plant evolution, plant breeding programmes, biotechnology, microbiology of water, soil and air, the pharmaceutical industry, cosmetic industry, energy food industry, forensic science, aerobiology, allergy, epidemiology, meteorology, fossil fuel exploration and biodiversity.
Download or read book The Fungi which Cause Plant Disease written by Frank Lincoln Stevens and published by . This book was released on 1913 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pollen and Spores written by S N Agashe and published by CRC Press. This book was released on 2019-10-16 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Palynology finds applications in various fields. Some of them are taxonomy, plant evolution, plant breeding programmes, biotechnology, microbiology of water, soil and air, the pharmaceutical industry, cosmetic industry, energy food industry, forensic science, aerobiology, allergy, epidemiology, meteorology, fossil fuel exploration and biodiversity.
Download or read book Pollen spore and aerobiology vol 26 written by A. J. Solomon Raju and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Spores and Other Microfossils from Upper Devonian and Lower Mississippian Rocks of Ohio written by Marcia R. Winslow and published by . This book was released on 1962 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spores written by Maria Lodovica Gullino and published by Springer Nature. This book was released on 2021-08-17 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to describe, though in a quite light way, the social role of plant diseases, letting the reader know the topical importance of plant pathology, as well as the role of plant pathologists in our society. Plant diseases caused, in the past, significant economic losses, deaths, famine, wars, and migration. Some of them marked the history of entire countries. One example among many: the potato late blight in Ireland in 1845. Today plant diseases are still the cause of deaths, often silent, in developing countries, and relevant economic losses in the industrialized ones. This book, written with much passion, neither wants to be a plant pathology text. On the contrary, it wants to describe, in simple words, often enriched by the author's personal experience, various plant diseases that, in different times and countries, did cause severe losses and damages. Besides the so-called “historical plant diseases”, in the process of writing this book, she wanted to describe also some diseases that, though not causing famine or billions of losses, because of their peculiarity, might be of interest for the readers. Thus, this book has not been conceived and written for experts, but for a broader audience, of different ages, willing to learn more about plant health and to understand the reasons why so many people in the past and nowadays choose to be plant pathologists. This is because plants produce most of the food that we consume, that we expect to be healthy and safe, and because plants make the world beautiful. The title “Spores” is evocative of the reproduction mean of fungi. Spores are small, light structures, often moving fast. The chapters of this book are short and concise. Just like spores!
Download or read book Spore Discharge in Land Plants written by Cecil Terence Ingold and published by . This book was released on 1939 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pollen and spore morphology plant taxonomy written by Gunnar Erdtman and published by . This book was released on 1972 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pollen and Spore Morphology Plant Taxonomy written by Gunnar Erdtman and published by . This book was released on 1957 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pollen and Spore Morphology plant Taxonomy Gymnospermae Pteriodophyta Bryophyta Illustrations written by G (Gunnar) 1897- Erdtman and published by Legare Street Press. This book was released on 2023-07-22 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This definitive guide to pollen and spore morphology provides detailed illustrations and descriptions of plant taxa from Gymnospermae to Bryophyta. Indispensable for anyone studying plant taxonomy, the book provides a valuable reference for botanists and plant enthusiasts alike. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
