A 2-kb Mycovirus Converts a Pathogenic Fungus into a Beneficial Endophyte for Brassica Protection and Yield Enhancement
| Autor: | Zhenzhen Zhao, Bo Li, Tao Chen, Jiatao Xie, Binnian Tian, Daohong Jiang, Yanping Fu, Zheng Qu, Xinqiang Liu, Qianqian Wang, Jiasen Cheng, Hongxiang Zhang, Shufen Cheng, David B. Collinge |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine biological control Brassica Flowers Plant Science Fungal Viruses DNA MYCOVIRUS Biology 01 natural sciences Endophyte Microbiology 03 medical and health sciences Ascomycota mycovirus Endophytes PLANT Molecular Biology Pathogen Gene CHESTNUT BLIGHT FUNGUS SCLEROTINIA-SCLEROTIORUM HYPOVIRULENCE rapeseed stem rot Host (biology) Brassica napus Sclerotinia sclerotiorum food and beverages Pathogenic fungus biology.organism_classification GENE Circadian Rhythm 030104 developmental biology Mycovirus GROWTH VIRUS Stem rot endophyte BIOLOGICAL-CONTROL RESISTANCE 010606 plant biology & botany |
| Zdroj: | Zhang, H, Xie, J, Fu, Y, Cheng, J, Qu, Z, Zhao, Z, Cheng, S, Chen, T, Li, B, Wang, Q, Liu, X, Tian, B, Collinge, D B & Jiang, D 2020, ' A 2-kb Mycovirus Converts a Pathogenic Fungus into a Beneficial Endophyte for Brassica Protection and Yield Enhancement ', Molecular Plant, vol. 13, no. 10, pp. 1420-1433 . https://doi.org/10.1016/j.molp.2020.08.016 |
| ISSN: | 1674-2052 |
| DOI: | 10.1016/j.molp.2020.08.016 |
| Popis: | Mycoviruses are viruses that infect fungi, and hypovirulence-associated mycoviruses have the potential to control fungal diseases. However, it is unclear how mycovirus-mediated hypovirulent strains live and survive in the field, and no mycovirus has been applied for field crop protection. In this study, we found that a previously identified small DNA mycovirus (SsHADV-1) can convert its host, Sclerotinia sclerotiorum, from a typical necrotrophic pathogen to a beneficial endophytic fungus. SsHADV-1 downregulates the expression of key pathogenicity factor genes in S. sclerotiorum during infection. When growing in rapeseed, the SsHADV-1-infected strain DT-8 significantly regulates the expression of rapeseed genes involved in defense, hormone signaling, and circadian rhythm pathways. As a result, plant growth is promoted and disease resistance is enhanced. Field experiments showed that spraying DT-8 at the early flowering stage can reduce the disease severity of rapeseed stem rot by 67.6% and improve yield by 14.9%. Moreover, we discovered that SsHADV-1 could also infect other S. sclerotiorum strains on DT-8-inoculated plants and that DT-8 could be recovered from dead plants. These findings suggest that the mycoviruses may have the ability to shape the origin of endophytism. Our discoveries suggest that mycoviruses may influence the origin of endophytism and may also offer a novel strategy for disease control in which mycovirus-infected strains are used to improve crop health and release mycoviruses into the field. |
| Databáze: | OpenAIRE |
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