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Plant reproductive biology has undergone a revolution during the
past five years, with the cloning, sequencing and localization of
the genes important in reproduction. These advantages in plant
molecular biology have led to exciting applications in plant
biotechnology, including the genetic engineering of male sterility
and other reproductive processes. This book presents an interesting
and contemporary account of these new developments from the
scientists in whose laboratories they have been made. The chapters
focus on two areas: the molecular biology of self-incompatibility,
which is the system of self-recognition controlled by the S-gene
and related genes; and the cellular and molecular biology of pollen
development and genetic dissection of male sterility. Some chapters
feature Arabidopsis, with its unique genetic system. Reproduction
is vital for seed production in crop plants, and this book presents
new approaches to manipulate plant breeding systems for the 21st
century.
Arabinogalactan-proteins are distributed throughout the plant
kingdom and are present in leaves, stems, roots, floral parts, and
seeds. At the subcellular level, AGPs are localized on the plasma
membrane, in the cell wall, in secretory and endocytotic pathway
organelles, in stylar and root secretions and in the medium of
cultured cells. The widespread distribution of AGPs indicates that
they perform important functions. An expansion of knowledge
regarding AGPs has been initiated and sustained through new
experimental approaches, including the development of monoclonal
antibody probes and cloning of cDNAs corresponding to core
polypeptides. Regulated expression and other evidence points to the
involvement of AGPs in plant reproductive development, pattern
formation, and somatic embryogenesis, as well as in the processes
of cell division, cell expansion, and cell death. AGPs also have an
importance to industry. One example is gum arabic, an exudate from
Acacia senegal, a mixture of AGPs and polysaccharides which has
unique viscosity and emulsifying properties that have led to many
uses in the food as well as other industries.
Arabinogalactan-proteins are distributed throughout the plant
kingdom and are present in leaves, stems, roots, floral parts, and
seeds. At the subcellular level, AGPs are localized on the plasma
membrane, in the cell wall, in secretory and endocytotic pathway
organelles, in stylar and root secretions and in the medium of
cultured cells. The widespread distribution of AGPs indicates that
they perform important functions. An expansion of knowledge
regarding AGPs has been initiated and sustained through new
experimental approaches, including the development of monoclonal
antibody probes and cloning of cDNAs corresponding to core
polypeptides. Regulated expression and other evidence points to the
involvement of AGPs in plant reproductive development, pattern
formation, and somatic embryogenesis, as well as in the processes
of cell division, cell expansion, and cell death. AGPs also have an
importance to industry. One example is gum arabic, an exudate from
Acacia senegal, a mixture of AGPs and polysaccharides which has
unique viscosity and emulsifying properties that have led to many
uses in the food as well as other industries.
Originally published in 1929, this book presents a comprehensive
biography of the clergyman, scientific pioneer and philanthropist
Stephen Hales (1677-1761). Aimed at the general reader, together
with botanists and physiologists, the text was produced upon
instruction from the Masters and Fellows of Corpus Christi College,
Cambridge to mark the 250th anniversary of the birth of Hales.
Illustrative figures and notes are incorporated throughout. This is
a highly readable book that will be of value to anyone with an
interest in the life and works of Hales or the history of science.
Originally published in 1946, this book presents the content of Sir
Lionel Whitby's inaugural lecture upon taking up the position of
Regius Chair of Physic at Cambridge University. This book will be
of value to anyone with an interest in the development of medicine
and the history of science.
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