Quantitative Resistance mechanisms, plant

Induced resistance is the qualitative or quantitative enhancement of a plant s defense mechanisms against pests in response to extrinsic physical or chemical stimuli. These extrinsic stimuli are known as inducers or elicitors. 

Cross-resistant plants have the ability to survive herbicides from different chemical classes. Cross-resistance may be conferred either by a single gene or, in the case of quantitative inheritance, by two or more genes influencing a single mechanism. Two types of mechanisms for cross-resistance are ... 

Temperature acclimation of plants is Icnown to be connected with the increased resistance of munerous cellular structures and functions (1,2). But if some authors think that adaptation is based on temperature induced conformational rearrangements of macromolecules (1), the others see its reason in a quantitative and qualitative changes observed in the protein complex of a cell (3) We believed (4), that both above mechanisms function in plants mutually supplemeting each other. It is assumed that a real contribution of each of them is dependent on the Intensity and duration of temperature effects, biological characteristics of the object and on occumpanying conditions (illumination, humidity, etc). 

Both kinds of nuclear plants have experienced SCC problems of neutron-irradiated material in the core, and some of the most ambitious corrosion research of the past two decades has dealt with the resulting blend of material property alteration, microstructure, and SCC behavior using advances in modeling and characterization. As a result of experimentation and basic research, material life can be predicted more accurately, and recommendations exist for new alloys with enhanced resistance to this specialized form of SCC. The ultimate goal is quantitative prediction of life once the corrosion and degradation mechanisms have been frilly understood. 

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