Download or read book Biotechnology and Ecology of Pollen written by David L. Mulcahy and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Recognition of the Forgotten Generation D. L. MULCAHyl Pollen was long believed to serve primarily a single function, that of delivering male gametes to the egge A secondary and generally overlooked value of pollen is that it serves to block the transmission of many defective alleles and gene combinations into the next generation. This latter function comes about simply because pollen tubes carrying defective haploid genotypes frequently fail to complete growth through the entire length of the style. However, the beneficial consequences of this pollen selection are diluted by the fact that the same deleterious genotypes are often transmitted through the egg at strictly mendelian frequencies (Khush, 1973). Gene expression in the pollen might thus at least appear to be a phenomenon of trivial consequence. Indeed, Heslop-Harrison (1979) rightly termed the gametophytic portion of the angiosperm life cycle, the "forgotten generation." This neglect, however, came about despite subtle but constant indications that pollen is the site of intense gene activity and selection. For example, Mok and Peloquin (1975) demonstrated that relatively heterozygous diploid pollen shows heterotic characteristics whereas relatively homozygous diploid pOllen does not. This was proof positive that genes are expressed (that is, transcribed and translated) in the pollen. 1 Department of Botany, University of Massachusetts Amherst, MA 01003, USA viii However, the implications for pollen biology of even this recent and well known study were not widely recognized.
Download or read book Biotechnology and Ecology of Pollen written by D. L. Mulcahy and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biotechnology and Ecology of Pollen written by David L. Mulcahy and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In ruim 75 internationale bijdragen worden recente onderzoekswaarnemingen weergegeven o.a. in verband met het gemeenschappelijke karakter van gametofytische en sporofytische genotypen (nl. een groot deel van de structuurgenen bij bloeiende planten blijkt ook in stuifmeel voor te komen en wordt daardoor bepaald door haploide-selectie). De bijdragen zijn gerangschikt naar de hoofdonderwerpen: genen in stuifmeel, stuifmeel in de biotechnologie, zelf-incompatibiliteit en interacties tussen stuifmeel en stijl, stuifmeelultrastructuur en -ontwikkeling, stuifmeelfysiologie en -metabolisme, gametofytische ecologie
Download or read book Biotechnology and Ecology of Pollen written by and published by . This book was released on 1985 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pollen Biology and Biotechnology written by K R Shivanna and published by CRC Press. This book was released on 2019-04-24 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author offers an overview of pollen biology and biotechnology for students and researchers in areas such as reproductive biology, biotechnology, aeropalynology, plant breeding, horticulture, and forestry. Citing more than 1,500 references to pollen research, the text covers topics including advances in understanding pollen tube growth, the use
Download or read book Pollen Biotechnology written by Shyam S. Mohapatra and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last decade has seen tremendous progress in our knowledge of the pollen development and gene expression on one hand and the characterization of pollen specific proteins on the other. In compiling the chapters for this volume, we have pragmatically categorized these basic developments in pollen molecular biology and biotechnology into two sections based on their applications in agricul ture and implications in medicine. Pollen developmental biology and gene expression: applications in agricul ture. Pollen development is an extremely complex process encompassing a series of biochemical, physiological and genetic events. At the basic level, sporophyt ically expressed genes may expound our knowledge of unique processes of cellular differentiation which ultimately give rise to a full-fledged organism. At the applied level, the studies on the pollen and male sporophyte-specific gene expression, and of promoters and transcription factors of relevant genes have the potential to manipulate the fertility in certain cash crops leading to agricultural biotechnology.
Download or read book Pollen Biology written by K.R. Shivanna and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pollen grains are everywhere - in the air, in the water, in soil and in the food we eat. Pollen has direct relevance in agriculture, horticulture, plant breeding, crop improvement and biotechnology. They are further of use for montioring cytotoxic effects - by herbicides, pesticides and pollutants - testing for allergic reactions, and for basic studies on gene expression, research on differentiation and polarity. Detailed instructions of the standard techniques, which have all been tested and improvised by the authors, are given, such as collection and storage of pollen, pollen culture, germination, tests for viability, incompatibility and isolation of protoplasts. Introduced by an explanation of the principles involved, the step-by step protocols are complemented by personal notes and precautions, specifying the reagents used and various appendices on basic and specific requirements for laboratory exercises on pollen.
Download or read book Anther and Pollen written by Christophe Clement and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pollen, the plant structure most widely used by humans, is a key structure in plant reproduction giving rise to fruits and seeds. Moreover, the biotechnological use of pollen is of great importance for plant breeders since it allows to obtain varieties with better utilization and yield. In the first part, the successive steps of pollen development in the anther from floral induction to pollen germination and fertilization are thoroughly examined; the second part is devoted to pollen behaviour in vitro.
Download or read book Biotechnology and Ecology of Pollen written by David L. Mulcahy and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pollen Biotechnology written by Shyam S. Mohapatra and published by Springer. This book was released on 2012-07-11 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last decade has seen tremendous progress in our knowledge of the pollen development and gene expression on one hand and the characterization of pollen specific proteins on the other. In compiling the chapters for this volume, we have pragmatically categorized these basic developments in pollen molecular biology and biotechnology into two sections based on their applications in agricul ture and implications in medicine. Pollen developmental biology and gene expression: applications in agricul ture. Pollen development is an extremely complex process encompassing a series of biochemical, physiological and genetic events. At the basic level, sporophyt ically expressed genes may expound our knowledge of unique processes of cellular differentiation which ultimately give rise to a full-fledged organism. At the applied level, the studies on the pollen and male sporophyte-specific gene expression, and of promoters and transcription factors of relevant genes have the potential to manipulate the fertility in certain cash crops leading to agricultural biotechnology.
Download or read book Pollen Biology and Biotechnology written by K. R. Shivanna and published by Turtleback. This book was released on 2003-01-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: NULL
Download or read book Pollen Biotechnology for Crop Production and Improvement written by K. R. Shivanna and published by Cambridge University Press. This book was released on 1997-04-13 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, for the first time in a single volume, are all the ideas and techniques developed in the last two decades concerning the manipulation of pollen and pollen tubes in plant breeding and biotechnology.
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 Advances in Pollen Research Biology Biotechnology and Plant Breeding Applications written by Concepción Gómez-Mena and published by Frontiers Media SA. This book was released on 2022-04-19 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Angiosperm Pollen and Ovules written by E. Ottaviano and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this volume is the reproductive biology of plants. A steadily growing interest in this field is the result of at least two factors, as pointed out with great foresight by one of the driving forces in the field, H.E Linskens (Linskens 1964): most of the food consumed by humans takes the form of plant reproductive parts, and molecular biology now provides pow erful tools for investigating and manipulating plant reproductive systems. Molecular biology and the allied discipline of biotechnology are solidly represented in the papers in this book. The editors of Angiosperm Pollen and Ovules believe that the chapters herein contain some of the most excit ing findings of contemporary biology, and hope that the readers of this book will share their enthusiasm. The editors express sincere and grateful thanks for help from Carla Frova, Enrico Pe, and especially to Giorgio Binelli, all of the University of Milan. Without these three tireless and enthusiastic individuals it would not have been possible to maintain the apparently effortless proceeding of this congress. We thank also the organizing committee and the organizations that generously provided financial support (both listed below). Finally, we extend thanks to M. Cresti, D. Charlesworth, D. Hess, E Hoekstra, R. Bruce Knox, J.P. Mascarenhas, M.E. Nasrallah, P.L. Pfahler, A. Snow, and M.T.M. Willemse for chairing sessions.
Download or read book Reproductive Ecology of Flowering Plants A Manual written by K.R. Shivanna and published by Springer. This book was released on 2014-09-01 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Successful reproduction is the basis not only for the stability of the species in their natural habitat but also for productivity of our crop plants. Therefore, knowledge on reproductive ecology of wild and cultivated plants is important for effective management of our dwindling biodiversity and for the sustainability and improvement of the yield in crop species. Conservation and management of our plant diversity is going to be a major challenge in the coming decades, particularly in the tropical countries which are rich in biodiversity. Reproductive failure is the main driver for pushing a large number of tropical species to vulnerable category. Available data on reproductive ecology on tropical species is very limited and there is an urgent need to initiate research on these lines. A major limitation for the beginners to take up research is the absence of simple concise work manuals that provide step-wise procedures to study all aspects of reproductive ecology. The Manual fills this void. Over 60 protocols described in the manual cover the whole spectrum of reproductive ecology - study sites and species, phenology, floral morphology and sexuality, pollen and pistil biology, pollination ecology, breeding system, seed biology, seed dispersal and seedling recruitment. Each chapter gives a concise conceptual account of the topic before describing the protocols. The Manual caters to researchers, teachers and students who are interested in any aspect of reproductive ecology of flowering plants -- botanists, ecologists, agri-horticulturists, foresters, entomologists, plant breeders and conservation biologists.
Download or read book Pollen Chemistry Biotechnology written by Nesrin Ecem Bayram and published by Springer Nature. This book was released on 2024-01-17 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pollen is made up of many chemical constituents such as proteins, sugars, lipids, minerals and phytochemicals. These components make pollen products an excellent source of nutrients and antioxidants for consumers. However, mycotoxigenic fungi are also common in pollen, creating contamination from generated mycotoxins. With adequate monitoring, sampling, processing and storage of pollen the development of mycotoxins can be significantly prevented. Since pollen grain has strong membranes which can limit the bioavailability of some nutrients and phytochemicals, novel methods and pretreatments are required with special emphasis on microbiological pretreatment methodologies. Pollen Chemistry & Biotechnology summarizes current knowledge of the chemical composition of pollen, its importance as a functional food ingredient and its health promoting properties. As Introduction part a short elaborate about botanical characteristics and data, including morphology and anatomy of pollen and bee preferences, is given. Important factors such as the botanical and geographical origin, best practices for preservation of nutritional composition, bioactivity and safety of pollen are covered in full. The nutritional profile of pollen based on data for minerals, lipids and nutrients is presented. A detailed phytochemical profile of pollen based on data for phenolics, flavonoids, carotenoids, vitamins, bioactive compounds is also covered. Areas for the improvement of the bioavailability of different nutrients and bioactive compounds of pollen via applied pretreatments are presented, as are best practices for adequate pollen collection, procession and storage in order to obtain safe products. At the end, an overview about pollen bioactivity as reason to use it as source of pharmaceuticals is made.
