Sasa Gacnik, Alenka Munda, Robert Veberic, Metka Hudina, Maja Mikulic-Petkovsek
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引用次数: 0
摘要
本研究评估了水杨酸(SA)采收前或/和采收后处理对桃果实理化质量的影响,以及不同桃皮组织在水杨酸(SA)处理下的真菌感染和酚类物质对感染的反应。采收前的 SA 处理仅在三次喷洒 SA 的桃子采收时对物理质量参数有影响,其色调角更低,红晕比例更高,表明果实着色更好。研究发现,采收前的 SA 处理不会影响棉铃虫感染的强度,只有在采收后将桃果浸泡在 SA 溶液中才会产生影响。与未浸泡的果实相比,在浸泡过 SA 的桃果上,赤霉病菌的传播速度为 1.8 至 3.9 毫米/天,感染后五天的感染强度降低了 34%。与未浸泡的果实(68.9%)相比,收获后用 SA 处理过的桃果的孢子果比例(7.8%)也明显较低。不同组织的酚类反应也不同,受感染果实的健康组织中羟基肉桂酸和花青素的比例较高,而受感染果实的边界组织中黄烷醇的比例较高。酚类物质对感染和 SA 处理的最强反应是新绿原酸、花青素-3-葡萄糖苷和花青素-3-芸香糖苷含量较高。
The use of preharvest and postharvest treatments with salicylic acid to control brown rot and the response to its infection with the synthesis of phenolic compounds in peach fruit
The effects of preharvest or/and postharvest treatments with salicylic acid (SA) on the physicochemical quality of peach fruit, infection with the fungus Monilinia laxa and the phenolic response to infection in SA treatments in different peach peel tissues were evaluated. Preharvest SA treatments had an effect on the physical quality parameters only at harvest on three times SA-sprayed peaches, with which a lower hue angle and a higher percentage of red blush occurred, indicating better coloration of the fruit. It was found that the intensity of M. laxa infection was not affected by preharvest SA treatments, only by soaking peach fruit in SA solution after harvest. On SA soaked peach fruit, M. laxa spread between 1.8 and 3.9 mm/day slower than on non-soaked fruit, resulting in a 34% lower intensity of infection five days after infection. Peach fruit treated with SA after harvest also had a significantly lower percentage of sporulating fruit (7.8%) compared to non-soaked fruit (68.9%). The phenolic response differed between tissues, since the proportion of hydroxycinnamic acids and anthocyanins was higher in the healthy tissue of infected fruit, while the proportion of flavanols was higher in the boundary tissue of infected fruit. The strongest phenolic response to infection and treatments with SA was in higher levels of neochlorogenic acid, cyanidin-3-glucosides and cyanidin-3-rutinosides.
期刊介绍:
Horticulture, Environment, and Biotechnology (HEB) is the official journal of the Korean Society for Horticultural Science, was launched in 1965 as the "Journal of Korean Society for Horticultural Science".
HEB is an international journal, published in English, bimonthly on the last day of even number months, and indexed in Biosys Preview, SCIE, and CABI.
The journal is devoted for the publication of original research papers and review articles related to vegetables, fruits, ornamental and herbal plants, and covers all aspects of physiology, molecular biology, biotechnology, protected cultivation, postharvest technology, and research in plants related to environment.