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Chloroplasts alter their morphology and accumulate at the pathogen interface during infection by Phytophthora infestans by Zachary Savage; Cian Duggan; Alexia Toufexi; Pooja Pandey; Yuxi Liang; María Eugenia Segretin; Lok Him Yuen; David C. A. Gaboriau; Alexandre Y. Leary; Yasin Tumtas; Virendrasinh Khandare; Andrew D. Ward; Stanley W. Botchway; Benji C. Bateman; Indranil Pan; Martin Schattat; Imogen Sparkes; Tolga O. Bozkurt is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Summary Upon immune activation, chloroplasts switch off photosynthesis, produce antimicrobial compounds and associate with the nucleus through tubular extensions called stromules. Although it is well established that chloroplasts alter their position in response to light, little is known about the dynamics of chloroplast movement in response to pathogen attack. Here, we report that during infection with the Irish potato famine pathogen Phytophthora infestans, chloroplasts accumulate at the pathogen interface, associating with the specialized membrane that engulfs the pathogen haustorium. The chemical inhibition of actin polymerization reduces the accumulation of chloroplasts at pathogen haustoria, suggesting that this process is partially dependent on the actin cytoskeleton. However, chloroplast accumulation at haustoria does not necessarily rely on movement of the nucleus to this interface and is not affected by light conditions. Stromules are typically induced during infection, embracing haustoria and facilitating chloroplast interactions, to form dynamic organelle clusters. We found that infection‐triggered stromule formation relies on BRASSINOSTEROID INSENSITIVE 1‐ASSOCIATED

Who reads Chloroplasts alter their morphology and accumulate at the pathogen interface during infection by Phytophthora infestans?

Author

Zachary Savage; Cian Duggan; Alexia Toufexi; Pooja Pandey; Yuxi Liang; María Eugenia Segretin; Lok Him Yuen; David C. A. Gaboriau; Alexandre Y. Leary; Yasin Tumtas; Virendrasinh Khandare; Andrew D. Ward; Stanley W. Botchway; Benji C. Bateman; Indranil Pan; Martin Schattat; Imogen Sparkes; Tolga O. Bozkurt

Publisher

Wiley

Published

2021

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)