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• W3179061061 abstract "Abstract In Brassicaceae , hypersensitive-like (HR-like) cell death is a central component of direct defenses triggered against eggs of the large white butterfly Pieris brassicae . The signaling pathway leading to HR-like in Arabidopsis is mainly dependent on salicylic acid (SA) accumulation, but downstream components are unclear. Here, we found that treatment with P. brassicae egg extract (EE) trigger changes in expression of sphingolipid metabolism genes in Arabidopsis and Brassica nigra . Disruption of ceramide synthase activity led to a significant decrease of EE-induced HR-like whereas SA signaling and reactive oxygen species levels were unchanged, suggesting that ceramides are downstream activators of HR-like. Sphingolipid quantifications showed that ceramides with C16:0 side-chains accumulated in both species, and this response was independent on SA accumulation. Finally, we provide genetic evidence that the modification of fatty acyl chains of sphingolipids modulates HR-like. Altogether, these results show that sphingolipids play a key and specific role during insect egg-triggered HR-like." @default.
• W3179061061 created "2021-07-19" @default.
• W3179061061 creator A5019629618 @default.
• W3179061061 creator A5066047889 @default.
• W3179061061 creator A5066486398 @default.
• W3179061061 creator A5087424935 @default.
• W3179061061 date "2021-07-11" @default.
• W3179061061 modified "2023-09-25" @default.
• W3179061061 title "Sphingolipids are involved in <i>Pieris brassicae</i> egg-induced cell death in <i>Arabidopsis thaliana</i>" @default.
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• W3179061061 doi "https://doi.org/10.1101/2021.07.09.451813" @default.
• W3179061061 hasPublicationYear "2021" @default.
• W3179061061 type Work @default.

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