| Effects of Trichoderma asperellum on antioxidant enzyme activity of sunflower seedlings and control of Sclerotinia sclerotiorum |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2023.05.26 |
| Key Words: Trichoderma asperellum sunflower Sclerotinia sclerotiorun antioxidant enzyme activity control efficacy |
| Author Name | Affiliation | | MA Guangshu | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing， Heilongjiang 163319, China | | JIANG Bo | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing， Heilongjiang 163319, China | | LIAN Hua | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing， Heilongjiang 163319, China | | CHEN Yurong | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing， Heilongjiang 163319, China | | ZHAO Zhenhan | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing， Heilongjiang 163319, China | | LI Mei | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | LI Runzhe | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing， Heilongjiang 163319, China | | ZHANG Ting | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing， Heilongjiang 163319, China |
|
| Hits: 458 |
| Download times: 375 |
| Abstract: |
| Trichoderma asperellum 581 with good control effect against sunflower Sclerotinia sclerotiorun was selected, and the effects of different strains application concentrations on the seedling growth, antioxidant enzyme activity and control effects against Sclerotinia sclerotiorun of sunflower through pot culture were evaluated from May to August 2021. The results showed that application concentrations of T. asperellum 581 effectively improved the control effect of Sclerotinia sclerotiorum of sunflower, and T3 of T. asperellum 581（1×105 spores·mL-1 of Trichoderma asperellum application concentration）was the most effective, with disease control efficacy of 98.77%. Different application concentrations of T. asperellum 581 all improved the plant height, stem diameter, whole plant fresh weight and root shoot ratio of sunflower seedlings compared with CK1 (only using sunflower Sclerotinia sclerotiorum to irrigate roots without Trichoderma suspension). Of which the T3 treatment of T. asperellum 581 had the best promoting effect on the morphogenesis and material accumulation of sunflower seedlings. Compared with CK1, plant height, stem diameter, whole plant fresh weight, whole plant dry weight, root shoot ratio and strong seedling index of sunflower seedlings increased by 64.71%、193.55%、99.15%、188.24%、50.00% and 416.67% respectively. Different application concentrations of T. asperellum 581 all increased the activity of peroxidase（POD）, catalase（CAT）, superoxide dismutase（SOD）, phenylalnine ammonialyase（PAL）, ascorbate peroxidase（APX）and polyphenol oxidase（PPO）in the leaves of sunflower seedlings. Of which the T3 treatment of T. asperellum 581 had the best effect on promoting the antioxidant enzyme activity of sunflower seedlings. Compared with CK1, the activity of POD, CAT, SOD, PAL, APX and PPO in the leaves of sunflower seedlings increased by 64.35%, 35.62%, 59.14%, 50.02%, 43.39% and 41.16% respectively at 35 days after sowing. The results showed that T. asperellum 581 in this study increased the antioxidant enzyme activity, promoted the morphogenesis and material accumulation of sunflower seedlings and improved the control effect of sunflower Sclerotinia sclerotiorun. |
|
|
|