Non-specific phospholipase C3 is involved in endoplasmic reticulum stress tolerance in Arabidopsis

© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For commercial re-use, please contact reprintsoup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink serv...

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Publié dans:Journal of experimental botany. - 1985. - 75(2024), 20 vom: 30. Okt., Seite 6489-6499
Auteur principal: Ngo, Anh H (Auteur)
Autres auteurs: Angkawijaya, Artik Elisa, Nakamura, Yuki, Kanehara, Kazue
Format: Article en ligne
Langue:English
Publié: 2024
Accès à la collection:Journal of experimental botany
Sujets:Journal Article Arabidopsis thaliana ER stress endoplasmic reticulum (ER) non-specific phospholipase C (NPC) phosphocholine (PCho) phospholipids unfolded protein response (UPR) Arabidopsis Proteins Tunicamycin plus... 11089-65-9 Type C Phospholipases EC 3.1.4.- Phosphorylcholine 107-73-3
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520 |a Non-specific phospholipase C (NPC) is an emerging family of lipolytic enzymes unique to plants and bacteria that play crucial roles in growth and stress responses. Among six copies of NPC isoforms found in Arabidopsis, the role of NPC3 remains elusive to date. Here, we show that NPC3 is a functional non-specific phospholipase C involved in tolerance to tunicamycin (TM)-induced endoplasmic reticulum (ER) stress through the synthesis of phosphocholine (PCho), a reaction product of NPC3. The npc3 mutant exhibited reduced sensitivity to TM treatment. Recombinant NPC3 possessed pronounced phospholipase C activity that hydrolyses phosphatidylcholine (PC). The hyposensitivity of npc3 to TM treatment was complemented by exogenous PCho, suggesting that NPC3-catalysed PCho production is involved in TM-induced ER stress tolerance. NPC3 was localized at the ER and was predominantly expressed in the roots, and it was further induced by TM-induced ER stress. Intriguingly, npc3 mutants showed a markedly reduced PCho content in shoots under ER stress. Our results indicate that ER stress induces NPC3 to produce PCho, which is involved in TM-induced ER stress tolerance 
650 4 |a Journal Article 
650 4 |a Arabidopsis thaliana 
650 4 |a ER stress 
650 4 |a endoplasmic reticulum (ER) 
650 4 |a non-specific phospholipase C (NPC) 
650 4 |a phosphocholine (PCho) 
650 4 |a phospholipids 
650 4 |a unfolded protein response (UPR) 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a Tunicamycin  |2 NLM 
650 7 |a 11089-65-9  |2 NLM 
650 7 |a Type C Phospholipases  |2 NLM 
650 7 |a EC 3.1.4.-  |2 NLM 
650 7 |a Phosphorylcholine  |2 NLM 
650 7 |a 107-73-3  |2 NLM 
700 1 |a Angkawijaya, Artik Elisa  |e verfasserin  |4 aut 
700 1 |a Nakamura, Yuki  |e verfasserin  |4 aut 
700 1 |a Kanehara, Kazue  |e verfasserin  |4 aut 
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773 1 8 |g volume:75  |g year:2024  |g number:20  |g day:30  |g month:10  |g pages:6489-6499 
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