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Viruses 2017, 9(5), 115; doi:10.3390/v9050115

Label-Free Quantitative Proteomic Analysis of Chitosan Oligosaccharide-Treated Rice Infected with Southern Rice Black-Streaked Dwarf Virus

1
State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
2
Hainan ZhengyeZhongnong High Techchnolngy Co., Ltd/National Joint Engineering Laboratory of marine biological pesticide discovery, Haikou 570206, China
*
Authors to whom correspondence should be addressed.
Academic Editor: K. Andrew White
Received: 19 April 2017 / Revised: 10 May 2017 / Accepted: 12 May 2017 / Published: 18 May 2017
(This article belongs to the Section Viruses of Plants, Fungi and Protozoa)
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Abstract

Southern rice black-streaked dwarf virus (SRBSDV) has spread from thesouth of China to the north of Vietnam in the past few years and severelyinfluenced rice production. Its long incubation period and early symptoms are not evident; thus, controlling it is difficult. Chitosan oligosaccharide (COS) is a green plant immunomodulator. Early studies showed that preventing and controlling SRBSDV have a certain effect and reduce disease infection rate, but its underlying controlling and preventing mechanism is unclear. In this study, label-free proteomics was used to analyze differentially expressed proteins in rice after COS treatment. The results showed that COS can up-regulate the plant defense-related proteins and down-regulate the protein expression levels of SRBSDV. Meanwhile, quantitative real-time PCR test results showed that COS can improve defense gene expression in rice. Moreover, COS can enhance the defense enzymatic activities of peroxidase, superoxide dismutase and catalase through mitogen-activated protein kinase signaling cascade pathway, and enhance the rice disease resistance. View Full-Text
Keywords: chitosan oligosaccharide; Southern rice black-streaked dwarf virus; label-free proteomics; mechanism; defensive reaction; catalase chitosan oligosaccharide; Southern rice black-streaked dwarf virus; label-free proteomics; mechanism; defensive reaction; catalase
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Yang, A.; Yu, L.; Chen, Z.; Zhang, S.; Shi, J.; Zhao, X.; Yang, Y.; Hu, D.; Song, B. Label-Free Quantitative Proteomic Analysis of Chitosan Oligosaccharide-Treated Rice Infected with Southern Rice Black-Streaked Dwarf Virus. Viruses 2017, 9, 115.

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