PDF(Pubmed)
Abstract：
Chili peppers (Capsicum annuum L.) are economically valuable crops belonging to the Solanaceae family and are popular worldwide because of their unique spiciness and flavor. In this study, differences in the metabolomes of landrace (Subicho) and disease-resistant pepper cultivars (Bulkala and Kaltanbaksa) widely grown in Korea are investigated using a 1H NMR-based metabolomics approach. Specific metabolites were abundant in the pericarp (GABA, fructose, and glutamine) and placenta (glucose, asparagine, arginine, and capsaicin), highlighting the distinct physiological and functional roles of these components. Both the pericarp and placenta of disease-resistant pepper cultivars contained higher levels of sucrose and hexoses and lower levels of alanine, proline, and threonine than the traditional landrace cultivar. These metabolic differences are linked to enhanced stress tolerance and the activation of defense pathways, imbuing these cultivars with improved resistance characteristics. The present study provides fundamental insights into the metabolic basis of disease resistance in chili peppers, emphasizing the importance of multi-resistant varieties to ensure sustainable agriculture and food security. These resistant varieties ensure a stable supply of high-quality peppers, contributing to safer and more sustainable food production systems.
摘要：
辣椒（CapsicumannuumL.）是属于茄科的经济价值作物，由于其独特的辣味和风味而在世界范围内流行。在这项研究中,使用基于1HNMR的代谢组学方法研究了在韩国广泛种植的地方品种（Subicho）和抗病辣椒品种（Bulkala和Kaltanbaksa）的代谢组差异。果皮中特定的代谢物丰富(GABA，果糖,和谷氨酰胺）和胎盘（葡萄糖，天冬酰胺,精氨酸和辣椒素)，强调这些成分的独特生理和功能作用。抗病辣椒品种的果皮和胎盘均含有较高水平的蔗糖和己糖，而丙氨酸含量较低，脯氨酸,和苏氨酸比传统的地方品种。这些代谢差异与增强的应激耐受性和防御途径的激活有关，使这些品种具有改善的抗性。本研究为辣椒抗病性的代谢基础提供了基本见解，强调多抗性品种对确保可持续农业和粮食安全的重要性。这些抗性品种保证了优质辣椒的稳定供应,促进更安全和更可持续的粮食生产系统。
