Munir N, Hameed A A, Haq R, Naz S
Department of Biotechnology, Lahore College for Women University - LCWU, Lahore, Pakistan.
Braz J Biol. 2019 Oct-Dec;79(4):742-748. doi: 10.1590/1519-6984.193791. Epub 2019 Apr 18.
Citrus fruit production occupies a place of considerable importance in the economy of the world including Pakistan. Tristeza disease caused by Citrus Tristeza Virus (CTV) exists in various forms that may or may not cause symptoms in the plants. The bioactive compounds and antioxidants are naturally present in plants and provide a defense mechanism that is generally accelerated in response to a stress. The objective of the present study was to target and analyze the citrus plants that were CTV positive to observe the changes in the enzymatic and non-enzymatic antioxidants of citrus (Sweet Oranges only). It was observed that in response to CTV infection, both the non-enzymatic antioxidants (total flavonoid, ascorbic acid, phenolic acid) and enzymatic antioxidants (catalase, superoxide dismutase and peroxidase) activities showed an increasing trend overall. The profiling of antioxidants in response to a viral infection may help in the discovery of new biomarkers that can be used as a monitoring tool in disease management.
柑橘类水果生产在包括巴基斯坦在内的世界经济中占有相当重要的地位。由柑橘衰退病毒（CTV）引起的衰退病有多种形式，这些形式在植物中可能会也可能不会引发症状。生物活性化合物和抗氧化剂天然存在于植物中，并提供一种防御机制，这种防御机制通常会因应激而加速。本研究的目的是针对并分析CTV呈阳性的柑橘类植物，以观察柑橘（仅甜橙）中酶促和非酶促抗氧化剂的变化。据观察，响应CTV感染，非酶促抗氧化剂（总黄酮、抗坏血酸、酚酸）和酶促抗氧化剂（过氧化氢酶、超氧化物歧化酶和过氧化物酶）的活性总体上均呈上升趋势。针对病毒感染对抗氧化剂进行分析，可能有助于发现新的生物标志物，这些生物标志物可作为疾病管理中的监测工具。
