Fusarium oxysporum f. sp. fabae is the causal agent of fusarium wilt. Fusaric acid (FA), produced by F. oxysporum, plays an important role in the occurrence of disease, and intercropping is an effective measure for control of disease and for improving host resistance in plants. The objective of this study was to investigate the physiological and biochemical responses, and mechanisms of tissue structure resistance, of intercropped faba beans following exposure to different concentrations of FA. Results demonstrated that intercropping reduced the occurrence of fusarium wilt, and improved faba bean growth and yield. In addition, wheat intercropping significantly reduced red ink absorption of faba bean (33.2%), increased water content (3.1%), and increased activity of the root antioxidant enzymes peroxidase (POD) and catalase (CAT) (26.3% and 2.2.%, respectively). Furthermore, increased lignin content and callose deposition in plant vessels were observed (12.5% and 42.7%, respectively) when subjected to the highest concentration of FA stress (200 mg/L). Intercropping resulted in more intact root cell morphology, increased occurrence of intracellular vacuoles, increased cell wall thickness, and an increase in the number of mitochondria and rough endoplasmic reticulum. Intercropping alleviated the wilting effect of FA on faba bean via enhanced physiological, biochemical, and tissue structure resistance of faba bean root.

中文翻译：

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小麦/蚕豆间作提高了蚕豆对富铁酸胁迫的生理和结构抗性

尖孢镰刀菌f。sp。Fabae是枯萎病的病原体。镰孢菌酸（FA），由产生的尖孢镰孢间作在病害的发生中起重要作用，并且间作是控制病害和提高植物对宿主抗性的有效措施。这项研究的目的是调查间作蚕豆暴露于不同浓度的FA后的生理和生化反应以及组织结构抗性的机制。结果表明，间作减少了枯萎病的发生，并改善了蚕豆的生长和产量。此外，小麦间作显着降低了蚕豆的红色墨水吸收率（33.2％），水分含量（3.1％）的增加以及根部抗氧化酶过氧化物酶（POD）和过氧化氢酶（CAT）的活性的增加（26.3％和2.2。％）。 ， 分别）。此外，观察到木质素含量增加和植物容器中的call质沉积（12。最高浓度的FA应力（200 mg / L）时分别为5％和42.7％。间作导致更完整的根细胞形态，增加细胞内液泡的发生，增加细胞壁的厚度，增加线粒体和粗面内质网的数量。间作通过增强蚕豆根的生理，生化和组织结构抗性，减轻了FA对蚕豆的萎作用。