1887

Abstract

Garlic virus X (GarVX) ORF3 encodes a p11 protein, which contributes to virus cell-to-cell movement and forms granules on the endoplasmic reticulum (ER) in . Expression of p11 either from a binary vector, PVX or TMV induced ER stress and the unfolded protein response (UPR), as demonstrated by an increase in transcription of the ER luminal binding protein () and genes. UPR-related programmed cell death (PCD) was elicited by PVX : p11 or TMV : p11 in systemic infected leaves. Examination of p11 mutants with deletions of two transmembrane domains (TM) revealed that both were required for generating granules and for inducing necrosis. TRV-based VIGS was used to investigate the correlation between expression and p11-induced UPR-related PCD. Less necrosis was observed on local and systemic leaves of knockdown plants when infected with PVXp11, suggesting that plays an important role in the UPR-related PCD response to p11 in .

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2016-06-01
2024-04-26
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