Biochemical and physiological responses to long‐term Citrus tristeza virus infection in Mexican lime plants

摘要: Reactions that occur when the plant is subjected to Citrus tristeza virus (CTV) infection often result in triggering numerous defence mechanisms fight infection. The reactions vary regarding strain, host genotype, time exposure and environmental conditions. No study has examined, date detail, consequence of ten-year CTV on biochemical physiological status susceptible Mexican lime plants (Citrus aurantifolia). To understand such kind changes nutrient status, total proteins, enzyme activity involved scavenging stressed condition, photosynthetic transpiration rates, chlorophyll content, membrane permeability water content were analysed between different strains healthy plants. superoxide dismutase polyphenol oxidase significantly decreased infected leaves, as well which lower Macro- micro-nutrient elements changed: concentrations leaf nitrogen, zinc, magnesium iron elevated but potassium concentration depressed relation non-infected control leaves. found with other elements, enzymes, photosynthesis stomatal conductance, relative content. As shown this clear among none strains. Data suggests some mechanism investigated here supressed due continuous long-term pressure biotic stress. This article protected by copyright. All rights reserved.