Tomato responds to green peach aphid infestation with the activation of trehalose metabolism and starch accumulation.

Plant Signaling & Behavior
Vijay Singh, Jyoti Shah

Abstract

The disaccharide trehalose and trehalose-6-phosphate that are present in trace amounts are suggested to have a signaling function in plants. Recently, it was demonstrated that trehalose metabolism contributes to Arabidopsis thaliana defense against the green peach aphid (GPA; Myzus persicae Sülzer), an important insect pest of a large variety of plants. TPS11 (TREHALOSE PHOSPHATE SYNTHASE11)-dependent trehalose metabolism was shown to curtail GPA infestation by promoting starch accumulation and expression of the PAD4 (PHYTOALEXIN-DEFICIENT4) gene, which has important roles in regulating antibiosis and antixenosis against GPA. Here we show that trehalose metabolism is similarly activated in leaves of GPA-infested tomato (Solanum lycopersicum) plants and likely contributes to tomato defense against GPA. GPA-infested leaves of tomato accumulated trehalose, which was accompanied by the transient upregulation of SlTPS11, a homolog of the Arabidopsis TPS11. GPA-infestation was also accompanied by starch accumulation and the upregulation of SlPAD4, the tomato homolog of Arabidopsis PAD4. Furthermore, trehalose application induced SlPAD4 expression and starch accumulation, and curtailed GPA infestation, suggesting that like in Arabidop...Continue Reading

References

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Citations

Mar 22, 2014·The Plant Journal : for Cell and Molecular Biology·John Edward LunnMark Stitt
Feb 6, 2017·Plant, Cell & Environment·Camille PonzioRieta Gols
Jun 8, 2018·Plant Biotechnology Journal·Mingsheng QiLing Li
Mar 5, 2019·Frontiers in Physiology·Andrea NardelliGian Carlo Manicardi
Nov 26, 2019·Molecular Plant-microbe Interactions : MPMI·April M MacIntyreCaitilyn Allen
Feb 28, 2015·Journal of Proteome Research·Ritu ChaudharyIsgouhi Kaloshian
Aug 27, 2021·Plant Signaling & Behavior·Verónica Trujillo-PahuaCarla V Sánchez-Hernández
Oct 7, 2021·Plant Signaling & Behavior

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