Abstract
Yellow leaf caused by Sugarcane yellow leaf virus (SCYLV) is a serious constraint to sugarcane production in India and currently the disease epidemics occur on many of the susceptible varieties under field conditions. Studies were conducted on the virus transmission by sugarcane aphid Melanaphis sacchari in sugarcane by inoculating virus-free meristem derived from micro- propagated plants of sugarcane cv Co 86032 with viruliferous aphids. Virus transmission was confirmed through RT-PCR assays and subsequently SCYLV population was established through RT-qPCR. A maximum of 22.3 × 103, 3.16 × 106 and 4.78 × 106 copies of SCYLV-RNA targets were recorded in the plants after 7, 180 and 300 days, respectively. This study showed that the aphid species M. sacchari acts as an effective vector of SCYLV. The relative standard curve method in RT-qPCR efficiently detected the increment in SCYLV copy numbers in sugarcane following transmission through M. sacchari.
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The authors are grateful to Dr. N. Vijayan Nair, the Director of the Institute for providing necessary facilities and support to conduct the work. The first author is thankful to the Department of Biotechnology, New Delhi for the support of Senior Research Fellow under NCS-TCP.
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Chinnaraja, C., Viswanathan, R. Quantification of sugarcane yellow leaf virus in sugarcane following transmission through aphid vector, Melanaphis sacchari . VirusDis. 26, 237–242 (2015). https://doi.org/10.1007/s13337-015-0267-7
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DOI: https://doi.org/10.1007/s13337-015-0267-7