1
|
Hao X, Wang L, Zhang X, Zhong Q, Hajano JUD, Xu L, Wu Y. A Real-Time Loop-Mediated Isothermal Amplification for Detection of the Wheat Dwarf Virus in Wheat and the Insect Vector Psammotettix alienus. PLANT DISEASE 2021; 105:4113-4120. [PMID: 34003037 DOI: 10.1094/pdis-10-20-2279-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wheat dwarf virus (WDV; genus Mastrevirus, family Geminiviridae) is an economically important and widespread pathogen of cereal crops. It causes huge yield loss in wheat because of the unavailability of resistant varieties and rapid transmission by the vector leafhopper, Psammotettix alienus (Dahlb). To monitor and forecast this viral disease, an early diagnosis method is required for WDV detection in both infected plants and the virus vectors. In this study, we developed a real-time loop-mediated isothermal amplification (LAMP) assay for WDV detection. The positive sample could be detected within 28 to 32 min by following a simple, cost-effective procedure. The real-time LAMP assay showed a sensitivity of 2.7 × 105-6 copies/μl for detection and a high specificity for WDV amplification, with a similar accuracy to quantitative PCR. Furthermore, a closed-tube dye method facilitates the inspection of the LAMP reaction and avoids cross-contamination in the detection of the virus. This valuable detection assay could serve as an important tool for diagnosis and forecasting wheat dwarf disease intensity in the field.
Collapse
Affiliation(s)
- Xingan Hao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Licheng Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Xudong Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Qinrong Zhong
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Jamal-U-Ddin Hajano
- Department of Plant Pathology, Faculty of Crop Protection, Sindh Agriculture University, Tandojam 70060, Pakistan
| | - Liangsheng Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Yunfeng Wu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| |
Collapse
|
2
|
Chatzivassiliou EK. An Annotated List of Legume-Infecting Viruses in the Light of Metagenomics. PLANTS 2021; 10:plants10071413. [PMID: 34371616 PMCID: PMC8309371 DOI: 10.3390/plants10071413] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 11/16/2022]
Abstract
Legumes, one of the most important sources of human food and animal feed, are known to be susceptible to a plethora of plant viruses. Many of these viruses cause diseases which severely impact legume production worldwide. The causal agents of some important virus-like diseases remain unknown. In recent years, high-throughput sequencing technologies have enabled us to identify many new viruses in various crops, including legumes. This review aims to present an updated list of legume-infecting viruses. Until 2020, a total of 168 plant viruses belonging to 39 genera and 16 families, officially recognized by the International Committee on Taxonomy of Viruses (ICTV), were reported to naturally infect common bean, cowpea, chickpea, faba-bean, groundnut, lentil, peas, alfalfa, clovers, and/or annual medics. Several novel legume viruses are still pending approval by ICTV. The epidemiology of many of the legume viruses are of specific interest due to their seed-transmission and their dynamic spread by insect-vectors. In this review, major aspects of legume virus epidemiology and integrated control approaches are also summarized.
Collapse
Affiliation(s)
- Elisavet K Chatzivassiliou
- Plant Pathology Laboratory, Department of Crop Science, School of Plant Sciences, Agricultural University of Athens, 11855 Athens, Greece
| |
Collapse
|
3
|
Li M, Li XJ, Su YL. Flue-cured tobacco confirmed as a reservoir host plant for Tomato yellow leaf curl virus by agro-inoculation and Bemisia tabaci MED-mediated transmission. PLoS One 2017; 12:e0190013. [PMID: 29272279 PMCID: PMC5741240 DOI: 10.1371/journal.pone.0190013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 12/06/2017] [Indexed: 11/18/2022] Open
Abstract
Tomato yellow leaf curl virus (TYLCV) causes great losses in tomato production. In addition to tomato, TYLCV infects many crops or weeds as alternative hosts. These alternative hosts may serve as reservoirs for TYLCV survival and spread. Here, we tested the capability of cultivated, flue-cured tobacco to act as a reservoir host plant for TYLCV. TYLCV DNA was detected in nine flue-cured tobacco cultivars inoculated with an infectious TYLCV clone, although no visible symptoms developed on TYLCV-infected tobacco plants. The percentage of whiteflies with viral DNA increased with an increasing acquisition access period (AAP) and reached 100% after a 12 h AAP on infected tobacco plants. Using infected tobacco plants as virus resources, TYLCV was capable of being transmitted to tobacco and tomato plants by whiteflies, and typical symptoms of TYLCV infection were observed on infected tomato plants but not on infected tobacco plants. Our results suggest that flue-cured tobacco can serve as a reservoir host plant for TYLCV and may play an important role in the spread of TYLCV epidemics in China.
Collapse
Affiliation(s)
- Meng Li
- School of Food and Bioengineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, China
| | - Xiao-Juan Li
- School of Food and Bioengineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, China
| | - Yun-Lin Su
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Science, Guangzhou, China
| |
Collapse
|
4
|
Sun WJ, Lv WJ, Li LN, Yin G, Hang X, Xue Y, Chen J, Shi Z. Eugenol confers resistance to Tomato yellow leaf curl virus (TYLCV) by regulating the expression of SlPer1 in tomato plants. N Biotechnol 2016; 33:345-54. [PMID: 26776605 DOI: 10.1016/j.nbt.2016.01.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 12/14/2015] [Accepted: 01/07/2016] [Indexed: 10/22/2022]
Abstract
Tomato yellow leaf curl virus (TYLCV) is one of the most devastating plant diseases, and poses a significant agricultural concern because of the lack of an efficient control method. Eugenol is a plant-derived natural compound that has been widely used as a food additive and in medicine. In the present study, we demonstrated the potential of eugenol to enhance the resistance of tomato plants to TYLCV. The anti-TYLCV efficiency of eugenol was significantly higher than that of moroxydine hydrochloride (MH), a widely used commercial antiviral agent. Eugenol application stimulated the production of endogenous nitric oxide (NO) and salicylic acid (SA) in tomato plants. The full-length cDNA of SlPer1, which has been suggested to be a host R gene specific to TYLCV, was isolated from tomato plants. A sequence analysis suggested that SlPer1 might be a nucleobase-ascorbate transporter (NAT) belonging to the permease family. The transcript levels of SlPer1 increased markedly in response to treatment with eugenol or TYLCV inoculation. The results of this study also showed that SlPer1 expression was strongly induced by SA, MeJA (jasmonic acid methyl ester), and NO. Thus, we propose that the increased transcription of SlPer1 contributed to the high anti-TYLCV efficiency of eugenol, which might involve in the generation of endogenous SA and NO. Such findings provide the basis for the development of eugenol as an environmental-friendly agricultural antiviral agent.
Collapse
Affiliation(s)
- Wei-Jie Sun
- College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Wen-Jing Lv
- College of Horticulture, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Li-Na Li
- College of Horticulture, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Gan Yin
- Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
| | - Xiaofang Hang
- Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China, 50 Zhongling Street, Nanjing 210014, China
| | - Yanfeng Xue
- Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China; Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China, 50 Zhongling Street, Nanjing 210014, China
| | - Jian Chen
- Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China; Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China, 50 Zhongling Street, Nanjing 210014, China.
| | - Zhiqi Shi
- College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China; Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China; Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, China, 50 Zhongling Street, Nanjing 210014, China.
| |
Collapse
|