Apomixis in Plants
Apomixis in Plants

Author: Lenn Jerling

Publisher: Routledge

Published: 2017-11-22

Total Pages: 324

ISBN-13: 1351466305

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Apomixis in Plants presents a comprehensive review of different aspects of asexual seed formation in plants. This is important in plant research since apomixis could greatly facilitate breeding in important crops. It is also interesting theoretically because it carries problems related to genetic variation and evolution to its extreme. The book features a broad selection of topics, including a historical review of ideas and landmarks in the field; comparisons with other types of asexual reproduction in higher plants and with related phenomena in animals and related plants; a presentation of cytology and embryology of apomicts and the diversified terminology in the field; views on the genetic background of apomixis and environmental effects on its expression; and the interrelation between apomixis and other traits. Additional topics covered include classical and modern theories of sexual versus asexual reproduction; geographical and taxonomical trends in apomicts; ecological implications of apomixis, and a review of future possibilities for using apomixis in plant breeding. Apomixis in Plants is an important reference volume for researchers and students in all areas of botany, ecology, and plant breeding.

Apomixis in Angiosperms
Apomixis in Angiosperms

Author: Diego Hojsgaard

Publisher: CRC Press

Published: 2022-08-19

Total Pages: 498

ISBN-13: 1000624013

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Apomixis is a difficult-to-analyse trait with a complex molecular basis and a substantive effect on the biology of a species. Thus, apomixis is an interesting characteristic for researchers and students working in different fields of plant science and agriculture, and technological advances are enabling and making apomixis studies more common. Apomixis in Angiosperms: Mechanisms, Occurrences, and Biotechnology provides a systematic introduction to the mechanisms and developmental types of apomixis along with an overview of alternative methodologies for identifying apomixis and a detailed reassessment of the occurrences of apomictic species among angiosperm families. Optional methods are illustrated with examples of all types of apomixis and biological levels of analysis, i.e. cells, ovules, seeds and offspring. Data on apomictic species are collected in tables along with information on ploidy, type of apomixis and references. Occurrences of apomixis are briefly discussed in phylogenetic and evolutionary contexts. An outline of the molecular basis of apomixis in plants is presented, together with prospects and challenges that remain for its biotechnological exploitation. This book: Provides a systematic overview of the mechanisms of apomixis, developmental types and methodology for apomixis research. Reassesses apomixis at the species level in angiosperm families. Contains tables summarizing relevant information on apomixis. Analyses occurrences of apomixis in phylogenetic and evolutionary contexts. Outlines the molecular basis and biotechnological perspective of apomixis breeding. This book presents an accessible overview of apomixis research and a curated dataset of apomictic species. It serves as a reference book for students, researchers and citizen scientists interested in apomixis, as well as researchers, business innovators and entrepreneurs pursuing apomixis breeding. It can also be used as a textbook in graduate courses on plant reproduction.

Molecular Basis of Apomixis in Plants
Molecular Basis of Apomixis in Plants

Author: Diego Hojsgaard

Publisher: MDPI

Published: 2021-09-08

Total Pages: 300

ISBN-13: 3036515089

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Apomixis is the consequence of a concerted mechanism that harnesses the sexual machinery and coordinates developmental steps in the ovule to produce an asexual (clonal) seed. Altered sexual developments involve widely characterized functional and anatomical changes in meiosis, gametogenesis, and embryo and endosperm formation. The ovules of apomictic plants skip meiosis and form unreduced female gametophytes whose egg cells develop into a parthenogenetic embryo, and the central cells may or may not fuse to a sperm to develop the seed endosperm. Thus, functional apomixis involves at least three components, apomeiosis, parthenogenesis, and endosperm development, modified from sexual reproduction that must be coordinated at the molecular level to progress through the developmental steps and form a clonal seed. Despite recent progress uncovering specific genes related to apomixis-like phenotypes and the formation of clonal seeds, the molecular basis and regulatory network of apomixis is still unknown. This is a central problem underlying the current limitations of apomixis breeding. This book collates twelve publications addressing different topics around the molecular basis of apomixis, illustrating recent discoveries and advances toward understanding the genetic regulation of the trait, discussing the possible origins of apomixis and the remaining challenges for its commercial deployment in plants.

Embryology of Angiosperms
Embryology of Angiosperms

Author: B. M. Johri

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 850

ISBN-13: 3642693024

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Thirty-four years have elapsed since the publication of the late Professor P. Maheshwari's text, An Introduction to the Embryology of Angiosperms, a work which for many years served as an invaluable guide for students and a rich source book for research workerso Various texts dealing with sections of the braad spectrum oftopics encompassed by Maheshwari in his book have appeared in the interim, but a compendious modem work dealing with the whole field has been lacking. This present volume splendidly meets the need, and it is altogether fitting that Professor B. M. lohri, long an associate and close colleague of Professor Maheshwari and himself a prolific contributor to the subject, should have undertaken the task of editing it. When Maheshwari wrote, it was stiIl feasible for one author to handIe the subject, but today even someone with his fine bread th of vision and depth of understanding could not, alone, do it justice. So the effort has to be a collaborative one; and Professor lohri's achievement has been to bring together a team of authoritative collaborators, assign them their responsibilities, and put them to work to produce a text as integrated in its treatment as the diversity of the subject would allow. The product vividly illustrates the advances that have been made in the study of angiosperm reproductive systems in the last 30 years, and the book is surely destined to become the new standard for student and researcher alike.

Plant Development and Evolution
Plant Development and Evolution

Author:

Publisher: Academic Press

Published: 2019-01-04

Total Pages: 660

ISBN-13: 0128098058

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Plant Development and Evolution, the latest release in the Current Topics in Developmental Biology series, highlights new advances in the field, with this new volume presenting interesting chapters on the Evolution of the plant body plan, Lateral root development and its role in evolutionary adaptation, the Development of the vascular system, the Development of the shoot apical meristem and phyllotaxis, the Evolution of leaf diversity, the Evolution of regulatory networks in land plants, The role of programed cell death in plant development, the Development and evolution of inflorescence architecture, the Molecular regulation of flower development, the Pre-meiotic another development, and much more. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the Current Topics in Developmental Biology series Updated release includes the latest information on Plant Development and Evolution

Seed Genomics
Seed Genomics

Author: Philip W. Becraft

Publisher: John Wiley & Sons

Published: 2013-01-15

Total Pages: 294

ISBN-13: 1118525515

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This up-to-date review of seed genomics, from basic seed biology to practical applications in crop science, provides a thorough background understanding of seed biology from a basic science perspective. A valuable resource for advanced graduate students, post-docs, researchers and professionals in the Plant and Crop Sciences, this book brings together top researchers in the field to cover three general themes: genomic approaches to studying seeds, genomic analysis of basic seed biology, and crop seed genomics. A valuable resource for advanced graduate students, post-docs, researchers and professionals in the Plant and Crop Sciences

Apomixis in Angiosperms
Apomixis in Angiosperms

Author: Tamara N. Naumova

Publisher: CRC Press

Published: 2018-01-10

Total Pages: 275

ISBN-13: 1351086650

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Apomixis in Angiosperms: Nucellar and Integumentary Embryony is based on original cytoembryological data and critically reviewed literature on more than 250 species from 57 families of angiosperms. The book covers the complete process of nucellar and integumentary embryo formation and viable seed development within species, families, and among angiosperms in general. Many species (some of which are economically important) characterized by adventive embryony are listed. The book also provides an original simple classification of apomixis and offers a new approach to differentiating embryological structures in cases of apomixis and amphimixis. Apomixis in Angiosperms: Nucellar and Integumentary Embryony will be a useful reference for embryologists, botanists, cytologists, geneticists, and plant breeders. It will also benefit any researcher interested in studying somatic embryo formation in tissue culture.

Biotechnology and the Politics of Plants
Biotechnology and the Politics of Plants

Author: Matt Hodges

Publisher: Routledge

Published: 2021-04-13

Total Pages: 167

ISBN-13: 100040336X

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Biotechnology and the Politics of Plants explores the mysterious phenomenon of ‘apomixis’, the ability of certain plants to ‘self-clone’, and its potential as a revolutionary tool for agriculture and enhancing food security, that may soon be a reality. Through historical anthropological and ethnographic study, Matt Hodges traces the development of the CIMMYT Apomixis Project, a prominent frontier research initiative, and its reinvention as a leading public-private partnership. He analyzes the fast-moving historical transition from public sector, mixed plant breeding approaches grounded in genetics, to a contemporary era of agricultural biotechnology and genomics where PPPs are a leading format, and explores how social contexts of research shape how knowledge is produced, as well as what remains ‘unknown’, and constrain the development of an ‘Apomixis Technology’. The chapters present an inventive approach informed by the anthropology of time, science and technology studies, and dialogue with the work of Gilles Deleuze, Paul Rabinow, Hannah Arendt, Andrew Pickering, and Eduardo Viveiros de Castro. Hodges outlines novel ways of integrating notions of history and becoming, and considers how apomixis offers up an alternative image of thought to theoretical concepts such as the well-known ‘rhizome’. The book makes a valuable contribution to both the growing social scientific literature on genomics and biotechnology, and recent anthropological debates on time and history.