Co-Application of Allicin and Chitosan Increases Resistance of <i>Rosa roxburghii</i> against Powdery Mildew and Enhances Its Yield and Quality
Powdery mildew, caused by <i>Sphaerotheca</i> sp., annually causes severe losses in yield and quality in <i>Rosa roxburghii</i> production areas of southwest China. In this study, the role of the co-application of allicin and chitosan in the resistance of <i>R. roxburgh...
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MDPI AG
2021-11-01
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| Series: | Antibiotics |
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| Online Access: | https://www.mdpi.com/2079-6382/10/12/1449 |
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| author | Jiaohong Li Rongyu Li Cheng Zhang Zhenxiang Guo Xiaomao Wu Huaming An |
| author_facet | Jiaohong Li Rongyu Li Cheng Zhang Zhenxiang Guo Xiaomao Wu Huaming An |
| author_sort | Jiaohong Li |
| collection | DOAJ |
| description | Powdery mildew, caused by <i>Sphaerotheca</i> sp., annually causes severe losses in yield and quality in <i>Rosa roxburghii</i> production areas of southwest China. In this study, the role of the co-application of allicin and chitosan in the resistance of <i>R. roxburghii</i> against powdery mildew and its effects on growth, yield and quality of <i>R. roxburghii</i> were investigated. The laboratory toxicity test results show that allicin exhibited a superior antifungal activity against <i>Sphaerotheca</i> sp. with EC<sub>50</sub> value of 148.65 mg kg<sup>−1</sup>. In the field, the foliar application of allicin could effectively enhance chitosan against powdery mildew with control efficacy of 85.97% by spraying 5% allicin microemulsion (ME) 100–time liquid + chitosan 100–time liquid, which was significantly (<i>p</i> < 0.01) higher than 76.70% of allicin, 70.93% of chitosan and 60.23% of polyoxin. The co-application of allicin and chitosan effectively enhanced the photosynthetic rate and chlorophyll of <i>R. roxburghii</i> compared with allicin, chitosan or polyoxin alone. Moreover, allicin used together with chitosan was more effective than allicin or chitosan alone in enhancing <i>R. roxburghii</i> plant growth and fruit yield as well as improving <i>R. roxburghii</i> fruit quality. This work highlights that the co-application of allicin and chitosan can be used as a green, cost-effective and environmentally friendly alternative strategy to conventional antibiotics for controlling powdery mildew of <i>R. roxburghii</i>. |
| first_indexed | 2024-03-10T04:39:59Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2079-6382 |
| language | English |
| last_indexed | 2024-03-10T04:39:59Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Antibiotics |
| spelling | doaj.art-cd81c36fe0694e67b753abdfe8ebac4e2023-11-23T03:30:00ZengMDPI AGAntibiotics2079-63822021-11-011012144910.3390/antibiotics10121449Co-Application of Allicin and Chitosan Increases Resistance of <i>Rosa roxburghii</i> against Powdery Mildew and Enhances Its Yield and QualityJiaohong Li0Rongyu Li1Cheng Zhang2Zhenxiang Guo3Xiaomao Wu4Huaming An5College of Forestry, Guizhou University, Guiyang 550025, ChinaInstitute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, ChinaInstitute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, ChinaInstitute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, ChinaInstitute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, ChinaResearch Center for Fruit Tree Engineering and Technology of Guizhou Province, College of Agriculture, Guizhou University, Guiyang 550025, ChinaPowdery mildew, caused by <i>Sphaerotheca</i> sp., annually causes severe losses in yield and quality in <i>Rosa roxburghii</i> production areas of southwest China. In this study, the role of the co-application of allicin and chitosan in the resistance of <i>R. roxburghii</i> against powdery mildew and its effects on growth, yield and quality of <i>R. roxburghii</i> were investigated. The laboratory toxicity test results show that allicin exhibited a superior antifungal activity against <i>Sphaerotheca</i> sp. with EC<sub>50</sub> value of 148.65 mg kg<sup>−1</sup>. In the field, the foliar application of allicin could effectively enhance chitosan against powdery mildew with control efficacy of 85.97% by spraying 5% allicin microemulsion (ME) 100–time liquid + chitosan 100–time liquid, which was significantly (<i>p</i> < 0.01) higher than 76.70% of allicin, 70.93% of chitosan and 60.23% of polyoxin. The co-application of allicin and chitosan effectively enhanced the photosynthetic rate and chlorophyll of <i>R. roxburghii</i> compared with allicin, chitosan or polyoxin alone. Moreover, allicin used together with chitosan was more effective than allicin or chitosan alone in enhancing <i>R. roxburghii</i> plant growth and fruit yield as well as improving <i>R. roxburghii</i> fruit quality. This work highlights that the co-application of allicin and chitosan can be used as a green, cost-effective and environmentally friendly alternative strategy to conventional antibiotics for controlling powdery mildew of <i>R. roxburghii</i>.https://www.mdpi.com/2079-6382/10/12/1449allicinchitosan<i>Sphaerotheca</i> sp.antibiotic<i>Rosa roxburghii</i> |
| spellingShingle | Jiaohong Li Rongyu Li Cheng Zhang Zhenxiang Guo Xiaomao Wu Huaming An Co-Application of Allicin and Chitosan Increases Resistance of <i>Rosa roxburghii</i> against Powdery Mildew and Enhances Its Yield and Quality Antibiotics allicin chitosan <i>Sphaerotheca</i> sp. antibiotic <i>Rosa roxburghii</i> |
| title | Co-Application of Allicin and Chitosan Increases Resistance of <i>Rosa roxburghii</i> against Powdery Mildew and Enhances Its Yield and Quality |
| title_full | Co-Application of Allicin and Chitosan Increases Resistance of <i>Rosa roxburghii</i> against Powdery Mildew and Enhances Its Yield and Quality |
| title_fullStr | Co-Application of Allicin and Chitosan Increases Resistance of <i>Rosa roxburghii</i> against Powdery Mildew and Enhances Its Yield and Quality |
| title_full_unstemmed | Co-Application of Allicin and Chitosan Increases Resistance of <i>Rosa roxburghii</i> against Powdery Mildew and Enhances Its Yield and Quality |
| title_short | Co-Application of Allicin and Chitosan Increases Resistance of <i>Rosa roxburghii</i> against Powdery Mildew and Enhances Its Yield and Quality |
| title_sort | co application of allicin and chitosan increases resistance of i rosa roxburghii i against powdery mildew and enhances its yield and quality |
| topic | allicin chitosan <i>Sphaerotheca</i> sp. antibiotic <i>Rosa roxburghii</i> |
| url | https://www.mdpi.com/2079-6382/10/12/1449 |
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