Shinde Ranjeet, Ayyanath Murali-Mohan, Shukla Mukund, El Kayal Walid, Saxena Praveen, Subramanian Jayasankar
Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada.
Department of Plant Agriculture, University of Guelph, Vineland Station, ON L0R 2E0, Canada.
Plants (Basel). 2023 Oct 21;12(20):3638. doi: 10.3390/plants12203638.
Black Knot (BK) is a deadly disease of European () and Japanese () plums caused by the hemibiotrophic fungus . After infection, the appearance of warty black knots indicates a phytohormonal imbalance in infected tissues. Based on this hypothesis, we quantified phytohormones such as indole-3-acetic acid, tryptophan, indoleamines (N-acetylserotonin, serotonin, and melatonin), and cytokinins (zeatin, 6-benzyladenine, and 2-isopentenyladenine) in temporally collected tissues of susceptible and resistant genotypes belonging to European and Japanese plums during of BK progression. The results suggested auxin-cytokinins interplay driven by appears to be vital in disease progression by hampering the plant defense system. Taken together, our results indicate the possibility of using the phytohormone profile as a biomarker for BK resistance in plums.
黑节病（BK）是由半活体营养型真菌引起的欧洲李和日本李的一种致命病害。感染后，疣状黑色节瘤的出现表明受感染组织中植物激素失衡。基于这一假设，我们在黑节病发展过程中，对欧洲李和日本李易感和抗病基因型的不同时期采集的组织中的植物激素进行了定量分析，如吲哚-3-乙酸、色氨酸、吲哚胺（N-乙酰血清素、血清素和褪黑素）以及细胞分裂素（玉米素、6-苄基腺嘌呤和2-异戊烯基腺嘌呤）。结果表明，由[未明确内容]驱动的生长素-细胞分裂素相互作用似乎通过阻碍植物防御系统在病害发展中至关重要。综上所述，我们的结果表明，利用植物激素谱作为李子抗黑节病生物标志物具有可能性。
