Synthesis of Novel Pyrimethanil Grafted Chitosan Derivatives with Enhanced Antifungal Activity.
Synthesis of Novel Pyrimethanil Grafted Chitosan Derivatives with Enhanced Antifungal Activity.
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合成具有更强抗真菌活性的新型嘧菌酯接枝壳聚糖衍生物。
DOI：
10.1155/2016/8196960
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发表时间：
2016
影响因子：
--
通讯作者：
Li P
中科院分区：
文献类型：
--
作者：
Li Y;Liu S;Qin Y;Xing R;Chen X;Li K;Li P
本研究合成了三种嘧霉胺接枝壳聚糖衍生物。通过红外光谱、核磁共振氢谱和元素分析确证了产物的结构。通过HPLC测量接枝率。研究了嘧霉胺接枝壳聚糖衍生物（PML-g-CS）在100、200和400 mg/L浓度下对水稻纹枯病菌和玉米赤霉菌的抑菌活性。PML-g-CS衍生物与壳聚糖相比具有更强的抗真菌活性。PML-g-CS-1的抗真菌活性最强。solani的抑菌指数为58.32%。PML-g-CS-2对G.玉米的抑菌指数为53.48%。壳聚糖与嘧霉胺的偶联具有协同增效作用。我们开发的PML-g-CS衍生物显示了进一步研究和应用于作物保护的潜力。
In this study, three pyrimethanil grafted chitosan (PML-g-CS) derivatives were obtained. The structures of the conjugates were confirmed by FT-IR, 1H NMR, and EA. The grafting ratios were measured by HPLC. Antifungal properties of pyrimethanil grafted chitosan (PML-g-CS) derivatives against the plant pathogenic fungi Rhizoctonia solani and Gibberella zeae were investigated at concentrations of 100, 200, and 400 mg/L. The PML-g-CS derivatives showed enhanced antifungal activity in comparison with chitosan. The PML-g-CS-1 showed the best antifungal activity against R. solani, whose antifungal index was 58.32%. The PML-g-CS-2 showed the best antifungal activity against G. zeae, whose antifungal index was 53.48%. The conjugation of chitosan and pyrimethanil showed synergistic effect. The PML-g-CS derivatives we developed showed potential for further study and application in crop protection.