التفاصيل البيبلوغرافية
| العنوان: |
Chloroplast redox state changes mark cell‐to‐cell signaling in the hypersensitive response. |
| المؤلفون: |
Lukan, Tjaša, Županič, Anže, Mahkovec Povalej, Tjaša, Brunkard, Jacob O., Kmetič, Mirjam, Juteršek, Mojca, Baebler, Špela, Gruden, Kristina |
| المصدر: |
New Phytologist; Jan2023, Vol. 237 Issue 2, p548-562, 15p |
| مصطلحات موضوعية: |
POTATO virus Y, APOPTOSIS, OXIDATION-reduction reaction, POTATOES, CHLOROPLASTS, REACTIVE oxygen species, SALICYLIC acid, CHLOROPLAST formation |
| مستخلص: |
Summary: Hypersensitive response (HR)‐conferred resistance is associated with induction of programmed cell death and pathogen spread restriction in its proximity. The exact role of chloroplastic reactive oxygen species and its link with salicylic acid (SA) signaling in HR remain unexplained.To unravel this, we performed a detailed spatiotemporal analysis of chloroplast redox response in palisade mesophyll and upper epidermis to potato virus Y (PVY) infection in a resistant potato genotype and its transgenic counterpart with impaired SA accumulation and compromised resistance.Besides the cells close to the cell death zone, we detected individual cells with oxidized chloroplasts further from the cell death zone. These are rare in SA‐deficient plants, suggesting their role in signaling for resistance. We confirmed that chloroplast redox changes play important roles in signaling for resistance, as blocking chloroplast redox changes affected spatial responses at the transcriptional level.Through spatiotemporal study of stromule induction after PVY infection, we show that stromules are induced by cell death and also as a response to PVY multiplication at the front of infection. Overall induction of stromules is attenuated in SA‐deficient plants. [ABSTRACT FROM AUTHOR] |
|
Copyright of New Phytologist is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder