Tomato yellow leaf curl virus (TYLCV-IL): A seed-transmissible geminivirus in tomatoes

Eui Joon Kil, Sunhoo Kim, Ye Ji Lee, Hee Seong Byun, Jungho Park, Haneul Seo, Chang Seok Kim, Jae Kyoung Shim, Jung Hwan Lee, Ji Kwang Kim, Kyeong Yeoll Lee, Hong Soo Choi, Sukchan Lee

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123 Scopus citations

Abstract

Tomato yellow leaf curl virus (TYLCV) is one of the most well-known tomato-infecting begomoviruses and transmitted by Bemisia tabaci. Seed transmission has previously been reported for some RNA viruses, but TYLCV has not previously been described as a seed-borne virus. In 2013 and 2014, without whitefly-mediated transmission, TYLCV was detected in young tomato plants germinated from fallen fruits produced from TYLCV-infected tomato plants in the previous cultivation season. In addition, TYLCV-Israel (TYLCV-IL) was also detected in seeds and their seedlings of TYLCV-infected tomato plants that were infected by both viruliferous whitefly-mediated transmission and agro-inoculation. The seed infectivity was 20-100%, respectively, and the average transmission rate to seedlings was also 84.62% and 80.77%, respectively. TYLCV-tolerant tomatoes also produced TYLCV-infected seeds, but the amount of viral genome was less than seen in TYLCV-susceptible tomato plants. When tomato plants germinated from TYLCV-infected seeds, non-viruliferous whiteflies and healthy tomato plants were placed in an insect cage together, TYLCV was detected from whiteflies as well as receiver tomato plants six weeks later. Taken together, TYLCV-IL can be transmitted via seeds, and tomato plants germinated from TYLCV-infected seeds can be an inoculum source of TYLCV. This is the first report about TYLCV seed transmission in tomato.

Original languageEnglish
Article number19013
JournalScientific Reports
Volume6
DOIs
StatePublished - 8 Jan 2016

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