NDLI: Fungal F8-Culture Filtrate Induces Tomato Resistance against Tomato Yellow Leaf Curl Thailand Virus

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Fungal F8-Culture Filtrate Induces Tomato Resistance against Tomato Yellow Leaf Curl Thailand Virus

Content Provider	MDPI
Author	Chiu, Yi-Shu Tzean, Yuh Chen, Yi-Hui Tsai, Chi-Wei Yeh, Hsin-Hung
Copyright Year	2021
Description	Tomato (Solanum lycopersicum) is an important economic crop worldwide. However, tomato production is jeopardized by the devastating tomato yellow leaf curl disease caused by whitefly-transmitted begomoviruses (WTBs). In this study, we evaluated the efficacy of our previously developed plant antiviral immunity inducer, fungal F8-culture filtrate, on tomato to combat tomato yellow leaf curl Thailand virus (TYLCTHV), the predominant WTB in Taiwan. Our results indicated that F8-culture filtrate treatment induced strong resistance, did not reduce the growth of tomato, and induced prominent resistance against TYLCTHV both in the greenhouse and in the field. Among TYLCTHV-inoculated Yu-Nu tomato grown in the greenhouse, a greater percentage of plants treated with F8-culture filtrate (43–100%) were healthy-looking compared to the $H_{2}$O control (0–14%). We found that TYLCTHV cannot move systemically only on the F8-culture filtrate pretreated healthy-looking plants. Tracking the expression of phytohormone-mediated immune maker genes revealed that F8-culture filtrate mainly induced salicylic acid-mediated plant immunity. Furthermore, callose depositions and the expression of the pathogen-induced callose synthase gene, POWDERY MILDEW RESISTANT 4 were only strongly induced by TYLCTHV on tomato pretreated with F8-culture filtrate. This study provides an effective way to induce tomato resistance against TYLCTHV.
Starting Page	1434
e-ISSN	19994915
DOI	10.3390/v13081434
Journal	Viruses
Issue Number	8
Volume Number	13
Language	English
Publisher	MDPI
Publisher Date	2021-07-23
Access Restriction	Open
Subject Keyword	Viruses Tomato Yellow Leaf Curl Disease Whitefly Transmitted Begomoviruses Tomato Yellow Leaf Curl Thailand Virus Virus Resistance Plant Immunity Inducer
Content Type	Text
Resource Type	Article

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