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Tomato Plant Flavonoids Increase Whitefly Resistance And Reduce Spread Of Tomato Yellow Leaf Curl Virus

文献类型: 外文期刊

作者: Yao, QX; Peng, ZK; Tong, H; Yang, FB; Xing, GS; Wang, LJ; Zheng, JJ; Zhang, YJ; Su, Q

作者机构:

关键词: Flavonoid; Solanum Lycopersicum; Bemisia Tabaci; Vector Resistance; Disease Control

期刊名称: JOURNAL OF ECONOMIC ENTOMOLOGY

ISSN: 0022-0493

年卷期: 2019 年 112 卷 6 期

页码:

收录情况: JCR(2021版)

摘要: Tomato yellow leaf curl virus (TYLCV), a begomovirus (genus Begomovirus) is the causal agent of tomato yellow leaf curl disease (TYLCD), which causes severe damage to tomato (Solanum lycopersicum) crops throughout tropical and subtropical regions of the world. TYLCV is transmitted by the whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) in a circulative and persistent manner. Our previous studies showed that tomato flavonoids deter B. tabaci oviposition, but the effects of tomato flavonoids on the settling and feeding behavior of B. tabaci and on its transmission of TYLCV are unknown. Using two near-isogenic tomato lines that differ greatly in flavonoid levels, we found that high flavonoid production in tomato deterred the landing and settling of B. tabaci. Moreover, electrical penetration graph studies indicated that high flavonoid levels in tomato reduced B. tabaci probing and phloem-feeding efficiency. As a consequence, high flavonoid levels in tomato reduced the primary and secondary spread of TYLCV. The results indicate that tomato flavonoids provide antixenosis resistance against B. tabaci and that the breeding of such resistance in new varieties could enhance TYLCD management.

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