Zebra chip-diseased potato tubers are characterized by increased levels of host phenolics, amino acids, and defense-related proteins
- 作者：Christopher M. Wallis ; christopher.wallis@ars.usda.gov ; Jianchi Chen ; Edwin L. Civerolo
- 关键词：Phenolics ; Pathogenesis-related (PR) proteins ; Defense induction ; Amino acids ; Malliard reaction ; Solanum tuberosum ; &lsquo ; Candidatus Liberibacter solanacearum&rsquo
- 刊名：Physiological and Molecular Plant Pathology
- 出版年：2012
- 期刊代码：183_08855765
- 类别：bio
- 出版时间：April, 2012
- 卷：78
- 期：Complete
- 页码：66-72
- 文件大小：284 K
摘要
Little is known about specific host chemistry effects on zebra chip disease symptom development in potatoes (Solanum tuberosum). This research compared chemical profiles and defense-related enzyme levels between non-symptomatic and zebra chip-symptomatic potato tubers. Levels of phenolics, five amino acids, peroxidases, polyphenol oxidases, chitinases, and 尾-1,3-glucanases were greater in symptomatic tubers than non-symptomatic tubers, and many of these compounds also were positively correlated with zebra chip disease severity. 鈥?em>Candidatus Liberibacter solanacearum鈥?was consistently present in symptomatic tubers. However, the lack of associations between titers and tuber chemistry suggests a complicated relationship between this bacterium and zebra chip symptoms.