Peach fruit is susceptible to fungal contamination during postharvest storage and logistics. Brown rot resulting from Monilinia fructicola infection is one serious disease. Plant glycerol, a natural biodegradable sugar alcohol, can restrain several plant diseases. The inhibitory effect and its mechanism of plant glycerol treatment on brown rot of peach fruit were studied in current study. The findings revealed that 50 mg/g plant glycerol combined with 0.02 % Silwet L-77 surfactant could effectively delay the onset of brown rot caused by M. fructicola. But no concentrations of plant glycerol had significant inhibitory effect on sporangium germination and mycelium growth of M. fructicola. The activities of β-1,3-glucanase (GNS) and chitinase (CHI), the gene relative expression of β-1,3-glucanase (PpGNS), chitinase (PpCHI), pathogenesis-related gene 1 (PpPR1) and nonexpresser of pathogenesis-related gene 1 (PpNPR1) and salicylic acid (SA) content were markedly promoted by plant glycerol treatment. The contents of O₂⁻, H₂O₂ and oleic acid were significantly repressed, but the activities of superoxide dismutase (SOD) and peroxidase (POD) and the expressions of glycerol kinase 1 (PpGLI1) and glycerol triphosphate dehydrogenase (PpGPDH) were significantly improved. Plant glycerol treatment could induce disease resistance through systemic acquired resistance (SAR) in peach fruit, which might be related to improving the synthesis of polyunsaturated fatty acids. Therefore, plant glycerol treatment is effective on inhibiting brown rot development and possesses potential application in postharvest peach fruit.

桃果实在采后储存和物流过程中容易受到真菌污染。由Monilinia fructicola感染引起的褐腐病是一种严重的疾病。植物甘油是一种天然可生物降解的糖醇，可以抑制多种植物病害。本研究旨在研究植物甘油处理对桃果实褐腐病的抑制效果及其机制。研究结果表明，50 mg/g植物甘油与0.02% Silwet L-77表面活性剂混合可有效延缓褐腐病的发生。果果霉。但没有任何浓度的植物甘油对孢子囊萌发和菌丝体生长有明显的抑制作用。果果霉。β-1,3-葡聚糖酶（GNS）和几丁质酶（CHI）活性，β-1,3-葡聚糖酶（PpGNS）、几丁质酶（PpCHI）、发病相关基因1（PpPR1）和非表达基因的相对表达量植物甘油处理显着提高了发病相关基因1（PpNPR1）和水杨酸（SA）含量。_{O 2} ^-、H ₂ O ₂和油酸的含量显着受到抑制，但超氧化物歧化酶（SOD）和过氧化物酶（POD）的活性以及甘油激酶1（PpGLI1）和三磷酸甘油脱氢酶（PpGPDH）的表达受到抑制。显着改善。植物甘油处理可通过桃果实的系统获得性抗性（SAR）诱导抗病性，这可能与改善多不饱和脂肪酸的合成有关。因此，植物甘油处理可有效抑制褐腐病的发生，在桃采后果实中具有潜在的应用前景。