Final answer:
Disease Resistance Genes (DRGs) within Disease-Resistant Markers (DBMs) help plants resist diseases exacerbated by irrigation by triggering defense mechanisms. These genes, incorporated through genetic engineering, allow plants to maintain health in high-moisture conditions favorable to pathogens.
Step-by-step explanation:
The carrier that is well known to help a Disease-Resistant Marker (DBM) be resistant to irrigation is usually a type of gene often referred to as a Disease Resistance Gene (DRG). These genes are introduced into plants to help them withstand various environmental stressors, such as excessive water from irrigation that can sometimes create a favorable environment for pathogens. By utilizing biotechnology techniques, such as genetic engineering, specific DRGs can be incorporated into crops to enhance their resilience against diseases that are spread through water or facilitated by high-moisture conditions.
DRGs function by providing the plant with a means to recognize and respond effectively to pathogens, often leading to the activation of a range of defense mechanisms. These defense strategies can include heightened physical barriers, such as thicker cell walls, or the production of biochemical substances that are toxic to the pathogens. The result is a plant that remains healthy and functional despite exposure to conditions that otherwise would promote disease development.