Academic Journal
UV-B induced accumulation of tocopherol in Arabidopsis thaliana is not dependent on individual UV photoreceptors
| العنوان: | UV-B induced accumulation of tocopherol in Arabidopsis thaliana is not dependent on individual UV photoreceptors |
|---|---|
| المؤلفون: | Uthman O. Badmus, Gaia Crestani, Remi D. O'Connell, Natalie Cunningham, Marcel A.K. Jansen |
| المصدر: | Plant Stress, Vol 5, Iss , Pp 100105- (2022) |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2022 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Biosynthesis impairment, Induction, Metabolite, Photoreceptor, Photosynthesis, Tocopherol, Plant ecology, QK900-989 |
| الوصف: | Tocopherols are lipophilic antioxidants in plants. Their potential role in protecting UV-B exposed plants has been alluded to, but not shown. Here we have determined UV-B induced accumulation of tocopherol in the model plant Arabidopsis thaliana and asked (1) whether induction relies on UV-B application duration, (2) if UV (UVR8) or blue light (phototropins or cryptochrome) photoreceptors mediate the accumulation of tocopherol and, (3) whether tocopherol contributes to UV-B photoprotection. Results show that UV-B induces accumulation of tocopherols in plants, with the strongest induction of α-tocopherol. The induction is dependent on exposure duration but not individual photoreceptors. Plants with impaired tocopherol biosynthesis show no UV-B induction of tocopherol and are found to be UV-sensitive. Overall, the results show for the first time that tocopherol accumulation is a component of UV-B acclimation and that impeding their responses leads to increased UV-susceptibility of the photosynthetic machinery. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2667-064X |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2667064X22000501; https://doaj.org/toc/2667-064X; https://doaj.org/article/1ffad2e3ef7e4fed9d38ab57b62695a7 |
| DOI: | 10.1016/j.stress.2022.100105 |
| الاتاحة: | https://doi.org/10.1016/j.stress.2022.100105 https://doaj.org/article/1ffad2e3ef7e4fed9d38ab57b62695a7 |
| رقم الانضمام: | edsbas.9882ECBA |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 2667064X |
|---|---|
| DOI: | 10.1016/j.stress.2022.100105 |