Plant Aging - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Plant Aging write by Roberto Rodríguez. This book was released on 2012-12-06. Plant Aging available in PDF, EPUB and Kindle. For many, the terms aging, maturation and senescence are synonymous and used interchangeably, but they should not be. Whereas senescence represents an endogenously controlled degenerative programme leading to plant or organ death, genetiC aging encompasses a wide array of passive degenerative genetiC processes driven primarily by exogenous factors (Leopold, 1975). Aging is therefore considered a consequence of genetiC lesions that accumulate over time, but by themselves do not necessarily cause death. These lesions are probably made more severe by the increase in size and complexity in trees and their attendant physiology. Thus while the withering of flower petals following pollination can be considered senescence, the loss of viability of stored seeds more clearly represents aging (Norden, 1988). The very recent book "Senescence and Aging in Plants" does not discuss trees, the most dominant group of plants on the earth. Yet both angiospermic and gymnospermic trees also undergo the above phenomena but less is known about them. Do woody plants senesce or do they just age? What is phase change? Is this synonymous with maturation? While it is now becoming recognized that there is no programmed senescence in trees, senescence of their parts, even in gymnosperms (e. g. , needles of temperate conifers las t an average of 3. 5 years), is common; but aging is a readily acknowledged phenomenon. In theory, at least, in the absence of any programmed senescence trees should -live forever, but in practice they do not.
Senescence and Aging in Plants
Senescence and Aging in Plants - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Senescence and Aging in Plants write by L.D. Nooden. This book was released on 2012-12-02. Senescence and Aging in Plants available in PDF, EPUB and Kindle. Senescence and Aging in Plants reviews the state of knowledge in the processes involved in plant senescence and aging. The book begins by discussing the emergence of senescence as a concept; experimental analysis of senescence; and patterns of senescence. It then examines membrane deterioration during senescence; photosynthesis in relation to leaf senescence; senescence of detached plant organs; changing patterns of nucleic acid and protein synthesis during senescence; and degradative and associated assimilatory aspects of nitrogen removal. This is followed by chapters on aspects of ethylene that may impinge upon its role in promoting senescence of higher plants; the role of cytokinins in plant senescence; the promoters and retardants of senescence; and the role of calcium in plant senescence. The concept of whole plant senescence is discussed, which can be subdivided into patterns, correlative controls, cessation of vegetative growth, declining assimilatory processes, assimilate partitioning, and hormonal controls. The final chapters cover the deterioration of cellular membranes during the plant aging process and seed aging.
Senescence Signalling and Control in Plants
Senescence Signalling and Control in Plants - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Senescence Signalling and Control in Plants write by Maryam Sarwat. This book was released on 2018-11-29. Senescence Signalling and Control in Plants available in PDF, EPUB and Kindle. Senescence Signalling and Control in Plants discusses the studies showing the importance of hormone action on developmental senescence. It shows the involvement of various signaling components (such as EIN2, LOX2) and transcription factors (such as oresara1 or ORE1) in controlling hormonal activity during senescence. Further, the involvement of various micro RNAs (miR164, miR319) in regulating leaf senescence are discussed. Through this book, the authors throw light on all the reverse and forward genetic approaches to reveal the role of various other phytohormones regulating plant senescence and the molecular mechanisms involved. Chapters on relevant topics are contributed by experts working in the area, making this a comprehensive treatise designed to provide an in-depth analysis on the subject matter. - Throws light on the involvement of hormones (other than the well- known hormones cytokine and ethylene) in plant senescence - Shows the underlying mechanisms on the hormonal actions during senescence - Exhibits the involvement of microRNAs during this important plant developmental process
Processes and Control of Plant Senescence
Processes and Control of Plant Senescence - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Processes and Control of Plant Senescence write by Y.Y. Leshem. This book was released on 2012-12-02. Processes and Control of Plant Senescence available in PDF, EPUB and Kindle. This monograph provides basic and empiric information underlying processes believed to be involved in the doubtless multifunctional plant senescence syndrome. While essentially assuming a `basic science' approach the authors, drawing on data obtained from many of the main laboratories and research centres involved in senescence research the world over, and also on findings of the research groups they are associated with, have described how principles of basic science have been applied to practical problems, and have outlined the partial means presently available to man for achieving plant senescence control. Moreover, information is provided on current problems in the forefront of senescence research. This approach will hopefully engender further enquiry and lead at least to partial solutions to some of the as yet unsolved problems.The book will be an asset to the book shelves of students on advanced courses in agriculture, biology and biochemistry as well as scientists and research workers, university and agricultural research station libraries and horticulturalists.
The Longevity of Plants
The Longevity of Plants - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Longevity of Plants write by Hans Molisch. This book was released on 1938. The Longevity of Plants available in PDF, EPUB and Kindle.
