By Ashwani Pareek, S.K. Sopory, Hans J. Bohnert, Govindjee
Environmental insults corresponding to extremes of temperature, extremes of water prestige in addition to deteriorating soil stipulations pose significant threats to agriculture and nutrients defense. utilizing modern instruments and methods from all branches of technological know-how, makes an attempt are being made around the globe to appreciate how vegetation reply to abiotic stresses with the purpose to aid manage plant functionality that might be higher suited for stand up to those stresses. This ebook on abiotic tension makes an attempt to look for attainable solutions to numerous uncomplicated questions with regards to plant responses in the direction of abiotic stresses. provided during this booklet is a holistic view of the overall rules of rigidity conception, sign transduction and law of gene expression. additional, chapters examine not just version platforms yet extrapolate interpretations bought from versions to vegetation. finally, discusses how stress-tolerant crop or version vegetation were or are being raised via plant breeding and genetic engineering techniques. Twenty 3 chapters, written through foreign specialists, combine molecular information with total plant constitution and body structure, in a text-book kind, together with key references.
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Additional resources for Abiotic Stress Adaptation in Plants: Physiological, Molecular and Genomic Foundation
Sex P Rep 10:67–73 Sardans J, Penuelas J (2007) Drought changes phosphorus and potassium accumulation patterns in an evergreen Mediterranean forest. Functional Ecol 21:191–201 Shipler L, Blum A (1990) Heat tolerance for yield and its components in different wheat cultivars. Euphytica 51:257–263 Singh VP, Singh RK, Singh BB, Zeigler RS (eds) (1996) Physiology of stress tolerance in rice. Proceedings of the International Conference on Stress Physiology of Rice. Lucknow, India, p 239 Varma A, Verma S, Sudha SN, Biitehorn B, Franken P (1999) Piriformospora indica, a cultivable plant-growth-promoting endophyte.
Sub-zero temperatures affect the cell membrane lipids and if chilling is protracted, there is loss of cell contents leading to cell death. Plants have different mechanisms to resist freezing injury. Cauliflower and cabbage have waxy leaf surfaces that avoid physical contact of the leaf epidermis with water droplets as they roll down the waxy leaf surface and this avoids frost damage. Succulent solanaceous crops like potato, tomato and chilies are generally more vulnerable to frost and cold injury.
In this long ordeal, farmers worldwide selected and domesticated various plants, now grouped as land races, folk varieties and farmer’s varieties. And many of these varieties possess genes for tolerance to various abiotic stresses. Modern high-yielding cultivars, particularly rice and wheat, have greater potential under well managed conditions. The vulnerability of modern crops to abiotic stresses causes wide annual yield fluctuations between bad years and good years. And there is a major global food deficit as the demand for food, and plant based by-products, is higher than what is being produced.