|Statement||by Alfred J. Ewart.|
|The Physical Object|
|Number of Pages||159|
Part of the Adaptations of Desert Organisms book series (DESERT ORGAN.) Desiccation tolerance is a feature of plants capable of experiencing protoplasmic dehydration without permanent injury. Except for the seed stage, this latter mechanism is poorly developed in the majority of higher by: 4. The majority of flowering-plant species can survive complete air-dryness in their seed and/or pollen. Relatively few species (‘resurrection plants’) express this desiccation tolerance in their foliage. Knowledge of the regulation of desiccation tolerance in resurrection plant foliage is reviewed. Elucidation of the regulatory mechanism in resurrection grasses may lead to identification of Cited by: 3. Desiccation tolerance (DT) is a survival strategy of terrestrial plants living under drought conditions and is defined as the ability to survive after losing up to 95% protoplasmic water. 1 It is. The deformation of living cells upon desiccation is called cytorrhysis. Note that the plasma membrane is pressed against the cell wall throughout desiccation (i.e., plasmolysis does not occur) because the hydrostatic pressure in cytoplasm remains greater than the hydrostatic pressure in apoplast (see also textbook Figure ).
The conundrum of desiccation tolerance dates to the beginning of the western scientific revolution with Antonie van Leeuwenhoek’s referral to ‘animalcules’ possessing revitalisation abilities upon exposure to moisture. In plants, vegetative desiccation tolerance is both a ubiquitous and a rare phenomenon. This apparent contradiction is due to the fact that many lower plants (e.g. lichens. contrast, plants that can survive desiccation only if water loss is gradual rely predominantly upon cellu-lar protection as a mechanism for tolerance (for full review, see Oliver & Bewley ). It is how these classes relate phylogenetically that is important in understanding the evolution of vegetative desiccation Cited by: Treating Desiccation Damage. Once your plant is damaged by desiccation, there’s no going back – those brown tissues are just dead. However, you can take steps to protect your plant from further damage throughout the year. Even though winter desiccation is the most dramatic, plants are at risk of desiccation all year long. Desiccation (from Latin de- "thorougly" + siccare "to dry") is the state of extreme dryness, or the process of extreme drying. A desiccant is a hygroscopic (attracts and holds water) substance that induces or sustains such a state in its local vicinity in a moderately sealed container. 3 Biology and ecology. DNA damage and repair.
Design Provisions For Withstanding Station Blackout At Nuclear Power Plants: IAEA Tecdoc Series No. [International Atomic Energy Agency] on *FREE* shipping on qualifying offers. International operating experience has shown that the loss of off-site power supply concurrent with a turbine trip and unavailability of the standby alternating current power system is a credible event. Plant growth regulators are the chemicals that regulate the growth and development of plants. on certain organic compounds to signal, regulate and control the growth of plants. These are collectively called as Plant Growth Regulators or Plant Growth Hormones. Induces dormancy in seeds and helps in withstanding desiccation and other. case for most nuclear power plants. The magnitude earthquake and consequential tsunami which occurred in Fukushima, Japan, in March , led to a common cause failure of on-site alternating current electrical power supply systems at the Fukushima Daiichi nuclear power plant as well as the off-site power grid. In addition. Desiccation tolerance of vegetative plant tissue is a phenomenon found throughout the plant kingdom (Bewley and Krochko, ).It is more common among lower plants, such as mosses and ferns, whereas it is rarely observed in angiosperm families (Alpert and Oliver, ).Plants that display desiccation tolerance are commonly called resurrection plants (Oliver, ), so named because of Cited by: