【摘要】 植物源病毒抑制物WCT-Ⅱ喷施于接种烟草花叶病毒(TMV)的烟草上,与仅接种TMV未经WCT-Ⅱ处理的发病对照相比,烟草叶片中叶绿素含量提高了58.0%,碱溶性胞内几丁质酶和碱溶性胞间几丁质酶活性分别提高27.0% 和40.7%,碱溶性胞内和酸溶性胞间β-1,3-葡聚糖酶活性分别提高22.1% 和140.0%。上述研究结果表明,WCT-Ⅱ能启动植物的一系列抗病防御反应,诱导植物产生抗病性。更多还原

【Abstract】 Antivirus agent WCT-II obtained from plants was sprayed to the leaves of tobacco infected with tobacco mosaic virus (TMV), and the infected tobacco without spraying of antivirus agent WCT-II was taken as control. The activities of chitinase and β-1,3-glucanase and the chlorophyll content were determined. The leaf chlorophyll content was found to increase by 58.0% as compared to the control. The activities of basic-soluble chitinase stored in the vacuole and intercellular chitinase increased by 27.0% and 40.7% respectively, and the activities of basic-soluble stored in the vacuole and acid-soluble intercellular β-1,3-glucanase increased by 22.1% and 140.0% respectively in the leaf of tobacco infected by TMV and sprayed by the antivirus agent WCT-II. The results suggested that WCT-II stimulate defense reaction of plant and be induced to produce resistance to pathogens.更多还原