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Increased water salinity applied to tomato plants accelerates the development of the leaf miner Tuta absoluta through bottom-up effects.


ABSTRACT: Variation in resource inputs to plants may trigger bottom-up effects on herbivorous insects. We examined the effects of water input: optimal water vs. limited water; water salinity: with vs. without addition of 100?mM NaCl; and their interactions on tomato plants (Solanum lycopersicum), and consequently, the bottom-up effects on the tomato leaf miner, Tuta absoluta (Meytick) (Lepidoptera: Gelechiidae). Plant growth was significantly impeded by limited water input and NaCl addition. In terms of leaf chemical defense, the production of tomatidine significantly increased with limited water and NaCl addition, and a similar but non-significant trend was observed for the other glycoalkaloids. Tuta absoluta survival did not vary with the water and salinity treatments, but the treatment "optimal water-high salinity" increased the development rate without lowering pupal mass. Our results suggest that caution should be used in the IPM program against T. absoluta when irrigating tomato crops with saline water.

SUBMITTER: Han P 

PROVIDER: S-EPMC5020321 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

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Increased water salinity applied to tomato plants accelerates the development of the leaf miner Tuta absoluta through bottom-up effects.

Han Peng P   Wang Zhi-Jian ZJ   Lavoir Anne-Violette AV   Michel Thomas T   Seassau Aurélie A   Zheng Wen-Yan WY   Niu Chang-Ying CY   Desneux Nicolas N  

Scientific reports 20160913


Variation in resource inputs to plants may trigger bottom-up effects on herbivorous insects. We examined the effects of water input: optimal water vs. limited water; water salinity: with vs. without addition of 100 mM NaCl; and their interactions on tomato plants (Solanum lycopersicum), and consequently, the bottom-up effects on the tomato leaf miner, Tuta absoluta (Meytick) (Lepidoptera: Gelechiidae). Plant growth was significantly impeded by limited water input and NaCl addition. In terms of l  ...[more]

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