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N-vanillyl-octanamide represses growth of fungal phytopathogens in vitro and confers postharvest protection in tomato and avocado fruits against fungal-induced decay
Protoplasma ( IF 2.5 ) Pub Date : 2021-01-07 , DOI: 10.1007/s00709-020-01586-x
Saúl Vázquez-Fuentes 1 , Ramón Pelagio-Flores 2 , José López-Bucio 1 , Alejandro Torres-Gavilán 3 , Jesús Campos-García 1 , Homero Reyes de la Cruz 1 , Jesús Salvador López-Bucio 4
Affiliation  

Plant diseases caused by pathogenic fungi result in considerable losses in agriculture. The use of fungicides is an important alternative to combat these pathogens, but may affect both the environment and human health. Plants produce many bioactive compounds to defend themselves from biotic challenges and an increasing number of secondary metabolites have been identified, which may be used to control fungal infections. Here, the bioactivity of a synthetic capsaicinoid, N-vanillyl-octanamide, also termed ABX-I, in the growth of five phytopathogenic fungi was assessed in vitro. The compound inhibited growth of Colletotrichum gloeosporioides, Botrytis cinerea, Colletotrichum acutatum, Fusarium sp., and Rhizoctonia solani AG2, while the magnitude of this effect differed from capsaicin. To investigate if ABX-I could effectively protect crops against phytopathogens, fungal challenges were performed in tomato leaves and fruits, as well as avocado fruits co-infiltrated with Botrytis cinerea or Colletotrichum gloeosporioides, respectively. In both tomato leaves and fruits and avocado fruits, ABX-I decreased the fungal damage not only in vegetative but also in edible tissues, and diminished decay symptoms compared with untreated fruits, which were highly sensitive to the pathogens. Furthermore, ABX-I spray application to tomato or avocado plants did not compromise growth and development, whereas it repressed spore germination and growth of C. gloeosporioides, which suggests its potential as an affordable and promising resource to control fungal diseases in the agronomic sector.

中文翻译:

N-香草基辛酰胺在体外抑制真菌植物病原体的生长,并赋予番茄和鳄梨果实的采后保护,防止真菌引起的腐烂

由病原真菌引起的植物病害在农业上造成相当大的损失。使用杀菌剂是对抗这些病原体的重要替代方法,但可能会影响环境和人类健康。植物会产生许多生物活性化合物来抵御生物挑战,并且已经鉴定出越来越多的次级代谢物,它们可用于控制真菌感染。在这里,在体外评估了合成辣椒素、N-香草基辛酰胺(也称为 ABX-I)在五种植物病原真菌的生长中的生物活性。该化合物抑制了胶孢炭疽菌、灰葡萄孢菌、尖头炭疽菌、镰刀菌属和立枯丝核菌 AG2 的生长,而这种作用的程度与辣椒素不同。为了研究 ABX-I 是否可以有效地保护作物免受植物病原体的侵害,分别在番茄叶和果实以及与灰葡萄孢或胶孢炭疽菌共同浸润的鳄梨果实中进行了真菌攻击。在番茄叶和果实以及鳄梨果实中,与未经处理的果实相比,ABX-I 不仅减少了营养组织中的真菌损伤,还减少了可食用组织中的真菌损伤,并减少了腐烂症状,后者对病原体高度敏感。此外,向番茄或鳄梨植物喷洒 ABX-I 不会影响生长和发育,但它抑制了球孢子菌的孢子萌发和生长,这表明其作为控制农艺部门真菌病害的经济实惠且有前景的资源的潜力。真菌挑战分别在番茄叶和果实中进行,以及分别与灰霉病菌或胶孢炭疽菌共同浸润的鳄梨果实。在番茄叶和果实以及鳄梨果实中,与未经处理的果实相比,ABX-I 不仅减少了营养组织中的真菌损伤,还减少了可食用组织中的真菌损伤,并减少了腐烂症状,后者对病原体高度敏感。此外,向番茄或鳄梨植物喷洒 ABX-I 不会影响生长和发育,但它抑制了球孢子菌的孢子萌发和生长,这表明其作为控制农艺部门真菌病害的经济实惠且有前景的资源的潜力。真菌挑战分别在番茄叶和果实中进行,以及分别与灰霉病菌或胶孢炭疽菌共同浸润的鳄梨果实。在番茄叶和果实以及鳄梨果实中,与未经处理的果实相比,ABX-I 不仅减少了营养组织中的真菌损伤,还减少了可食用组织中的真菌损伤,并减少了腐烂症状,后者对病原体高度敏感。此外,向番茄或鳄梨植物喷洒 ABX-I 不会影响生长和发育,但它抑制了球孢子菌的孢子萌发和生长,这表明其作为控制农艺部门真菌病害的经济实惠且有前景的资源的潜力。在番茄叶和果实以及鳄梨果实中,与未经处理的果实相比,ABX-I 不仅减少了营养组织中的真菌损伤,还减少了可食用组织中的真菌损伤,并减少了腐烂症状,后者对病原体高度敏感。此外,向番茄或鳄梨植物喷洒 ABX-I 不会影响生长和发育,但它抑制了球孢子菌的孢子萌发和生长,这表明其作为控制农艺部门真菌病害的经济实惠且有前景的资源的潜力。在番茄叶和果实以及鳄梨果实中,与未经处理的果实相比,ABX-I 不仅减少了营养组织中的真菌损伤,还减少了可食用组织中的真菌损伤,并减少了腐烂症状,后者对病原体高度敏感。此外,向番茄或鳄梨植物喷洒 ABX-I 不会影响生长和发育,但它抑制了球孢子菌的孢子萌发和生长,这表明其作为控制农艺部门真菌病害的经济实惠且有前景的资源的潜力。
更新日期:2021-01-07
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