美国加利福尼亚大学研究人员研究发现了植物产生抗病性的机理。该研究是由国家科学基金会资助进行的。试验采用由丁香假单胞菌番茄病理小种(Pseudomonas Syringae Pv.tomato)引起的细菌斑点病和番茄Pto抗性基因,结果证实,抗性机理是由植物中的抗性基因及侵染微生物中的“无致病性”基因激发的。因此,研究人员推测,该细菌无致病性基因 Researchers at the University of California, Los Angeles, discovered the mechanism by which plants develop disease resistance. The study was funded by the National Science Foundation. The test used the bacterial speck disease caused by Pseudomonas syringae pv. Tomato and the tomato Pto resistance gene. The results confirmed that the resistance mechanism is caused by the resistance genes in plants and the infecting microorganisms “Non-pathogenic ” gene-stimulated. Therefore, the researchers speculate that the bacteria are not pathogenic genes