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Disinfection treatments eliminated tomato brown rugose fruit virus in tomato seeds
European Journal of Plant Pathology ( IF 1.8 ) Pub Date : 2020-10-31 , DOI: 10.1007/s10658-020-02151-1
N. Samarah , A. Sulaiman , N. M. Salem , M. Turina

Tomato brown rugose fruit virus (ToBRFV), belonging to the genus Tobamovirus, is a highly-virulent emerging virus species, causing disease outbreaks and significant crop losses worldwide. No effective measure has been identified to control ToBRFV infection. Therefore, the objectives of this study were to investigate the effectiveness of three seed disinfection treatments on the elimination of ToBRFV in tomato seeds and their effect on seed quality. Seeds extracted from ToBRFV-infected fruits were treated with 2% hydrochloric acid (HCl) for 30 min, 10% trisodium phosphate (TSP) for 3 h, dry heat at 72 °C for 72 h, or their combinations; then, the seeds were tested for the presence of the virus using serological, molecular, and biological assays. Parallel treatments of seeds in distilled water (hydropriming) or untreated seeds were included for comparison. The quality of the treated seeds was also evaluated in terms of seed standard germination, mean time to germination (MTG), and seedling growth. Seeds extracted from ToBRFV-infected fruits had a 100% contamination rate. Treatment of ToBRFV-contaminated seeds with 2% HCl for 30 min or 10% TSP for 3 h resulted in a 100% disinfection rate, while heat treatment at 72 °C for 72 h or hydropriming treatments resulted in a 0% disinfection rate. Furthermore, seed treatment with HCl or hydropriming for 3 h significantly improved seed germination percentage, reduced MTG (faster speed of germination), and increased seedling length. In conclusion, seed treatment with 2% HCl for 30 min not only resulted in a 100% disinfection rate of seeds from the ToBRFV but also improved seed quality of tomato compared to untreated seeds.



中文翻译:

消毒处理消除了番茄种子中的番茄褐皱果病毒

番茄褐色皱纹水果病毒(ToBRFV),属于Tobamovirus,是一种高毒的新兴病毒,在世界范围内引起疾病爆发和重大农作物损失。尚未发现控制ToBRFV感染的有效措施。因此,本研究的目的是研究三种种子消毒处理对消除番茄种子中ToBRFV的效果及其对种子质量的影响。从ToBRFV感染的果实中提取的种子用2%盐酸(HCl)处理30分钟,10%磷酸三钠(TSP)处理3 h​​,在72°C下干热处理72 h,或将它们的混合物处理;然后,使用血清学,分子和生物学方法测试种子中是否存在病毒。为了进行比较,还包括了用蒸馏水(加氢处理)或未经处理的种子对种子进行的平行处理。还根据种子标准发芽,平均发芽时间(MTG)和幼苗生长来评估处理过的种子的质量。从被ToBRFV感染的果实中提取的种子的污染率为100%。用2%HCl处理被ToBRFV污染的种子30分钟或10%TSP处理3 h​​产生100%的消毒率,而在72°C热处理72 h或加水引发处理导致0%消毒率。此外,用HCl或加水引发处理种子3小时可显着提高种子发芽率,降低MTG(加快发芽速度)和增加苗长。总之,用2%HCl处理种子30分钟,不仅使ToBRFV种子的消毒率达到100%,而且与未经处理的种子相比,还提高了番茄的种子质量。平均发芽时间(MTG)和幼苗生长。从被ToBRFV感染的果实中提取的种子的污染率为100%。用2%HCl处理被ToBRFV污染的种子30分钟或10%TSP处理3 h​​产生100%的消毒率,而在72°C热处理72 h或加水引发处理导致0%消毒率。此外,用HCl或加水引发处理种子3小时可显着提高种子发芽率,降低MTG(加快发芽速度)和增加苗长。总之,用2%HCl处理种子30分钟,不仅使ToBRFV种子的消毒率达到100%,而且与未经处理的种子相比,还提高了番茄的种子质量。平均发芽时间(MTG)和幼苗生长。从被ToBRFV感染的果实中提取的种子的污染率为100%。用2%HCl处理被ToBRFV污染的种子30分钟或10%TSP处理3 h​​产生100%的消毒率,而在72°C热处理72 h或加水引发处理导致0%消毒率。此外,用HCl或加水引发处理种子3小时可显着提高种子发芽率,降低MTG(加快发芽速度)和增加苗长。总之,用2%HCl处理种子30分钟,不仅使ToBRFV种子的消毒率达到100%,而且与未经处理的种子相比,还提高了番茄的种子质量。用2%HCl处理被ToBRFV污染的种子30分钟或10%TSP处理3 h​​产生100%的消毒率,而在72°C热处理72 h或加水引发处理导致0%消毒率。此外,用HCl或加水引发处理种子3小时可显着提高种子发芽率,降低MTG(加快发芽速度)和增加苗长。总之,用2%HCl处理种子30分钟,不仅使ToBRFV种子的消毒率达到100%,而且与未经处理的种子相比,还提高了番茄的种子质量。用2%HCl处理被ToBRFV污染的种子30分钟或10%TSP处理3 h​​产生100%的消毒率,而在72°C热处理72 h或加水引发处理导致0%消毒率。此外,用HCl或加水引发处理种子3小时可显着提高种子发芽率,降低MTG(加快发芽速度)和增加苗长。总之,用2%HCl处理种子30分钟,不仅使ToBRFV种子的消毒率达到100%,而且与未经处理的种子相比,还提高了番茄的种子质量。使用HCl或加水引发处理种子3小时可以显着提高种子发芽率,降低MTG(加快发芽速度)和增加苗长。总之,用2%HCl处理种子30分钟,不仅使ToBRFV种子的消毒率达到100%,而且与未经处理的种子相比,还提高了番茄的种子质量。使用HCl或加水引发处理种子3小时可以显着提高种子发芽率,降低MTG(加快发芽速度)和增加苗长。总之,用2%HCl处理种子30分钟,不仅使ToBRFV种子的消毒率达到100%,而且与未经处理的种子相比,还提高了番茄的种子质量。

更新日期:2020-11-02
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