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This NATO Advanced Research Workshop held 25-30 September, 1988 at
the Villa Gualino, Turin, Italy, was the first international
meeting of its kind to be devoted solely to cell separation in
plants. The partial or complete dissociation of one cell from
another is an integral process of differentiation. Partial cell
separations are basic physiological components of the overall
programme of plant development. Complete cell separations are major
events in the ripening of fruits, and the shedding of plant parts.
Unscheduled cell separations commonly occur when tissues are
subjected to pathogenic invasion. Environmental stresses too, evoke
their own separation responses. Over the past five years much new
knowledge has been acquired on the regulation of gene expression in
specific stages of cell differentiation. Specific molecular markers
have been identified that designate the competence of cells for
achieving separation. Certain of the chemical signals (hormones,
elicitors) that must be emitted or perceived by cells to initiate
and sustain separation, are now known to us, and the resulting cell
wall changes have come under close chemical scrutiny. The Turin
meeting was a focus for those currently involved in such
investigations. It assessed factors controlling cell separation in
a wide spectrum of different cell types under a variety of
conditions.
Meristematic cells in plants become the many different types of
cells found in a mature plant. This is achieved by a selective
response to chemical signals both from neighbouring cells and
distant tissues. It is these responses that shape the plant, its
time of flowering, the sex of its flowers, its length of survival
or progress to senescence and death. How do plants achieve this?
This treatise addresses this question using well-chosen examples to
illustrate the concept of target cells. The authors discuss how
each cell has the ability to discriminate between different
chemical signals, determining which it will respond to and which it
will ignore. The regulation of gene expression through signal
perception and signal transduction is at the core of this
selectivity and the Target Cell concept. This volume will serve as
a valuable reference for all researchers working in the field of
plant developmental biology.
Meristematic cells in plants (as with stem cells in animals) become
the many different types of cells found in a mature plant. This is
achieved by a selective response to chemical signals both from
neighbouring cells and distant tissues. It is these responses that
shape the plant, its time of flowering, the sex of its flowers, its
length of survival or progress to senescence and death. How do
plants achieve this? This up-to-date treatise addresses this
question using well-chosen examples to illustrate the concept of
target cells. The authors discuss how each cell has the ability to
discriminate between different chemical signals, determining which
it will respond to and which it will ignore. The regulation of gene
expression through signal perception and signal transduction is at
the core of this selectivity and the Target Cell concept. This
volume will serve as a valuable reference for all researchers
working in the field of plant developmental biology.
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