Distinct physiological and metabolic reprogramming by highbush blueberry (Vaccinium corymbosum) cultivars revealed during long-term UV-B radiation
Date
Authors
INOSTROZA BLANCHETEAU, CLAUDIO ANDRES
Luengo Escobar, Ana
Alberdi, Miren
Acevedo, Patricio
Machado, Mariana
Nunes-Nesi, Adriano
Inostroza-Blancheteau, Claudio
Reyes-Daiz, Marjorie
Luengo Escobar, Ana
Alberdi, Miren
Acevedo, Patricio
Machado, Mariana
Nunes-Nesi, Adriano
Inostroza-Blancheteau, Claudio
Reyes-Daiz, Marjorie
Authors
Date
Datos de publicación:
10.1111/ppl.12536
Keywords
Chern-Simons theory - BTZ black holes - quasinormal modes - torsion - Dirac fields
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Abstract
Despite the Montreal protocol and the eventual recovery of the ozone layer over Antarctica, there are still concerns about increased levels of ultraviolet-B (UV-B) radiation in the Southern Hemisphere. UV-B induces physiological, biochemical and morphological stress responses in plants, which are species-specific and different even for closely related cultivars. In woody plant species, understanding of long-term mechanisms to cope with UV-B-induced stress is limited. Therefore, a greenhouse UV-B daily course simulation was performed for 21 days with two blueberry cultivars (Legacy and Bluegold) under UV-B-BE irradiance doses of 0, 0.07 and 0.19Wm(-2). Morphological changes, photosynthetic performance, antioxidants, lipid peroxidation and metabolic features were evaluated. We found that both cultivars behaved differently under UV-B exposure, with Legacy being a UV-B-resistant cultivar. Interestingly, Legacy used a combined strategy: initially, in the first week of exposure its photoprotective compounds increased, coping with the intake of UV-B radiation (avoidance strategy), and then, increasing its antioxidant capacity. These strategies proved to be UV-B radiation dose dependent. The avoidance strategy is triggered early under high UV-B radiation in Legacy. Moreover, the rapid metabolic reprogramming capacity of this cultivar, in contrast to Bluegold, seems to be the most relevant contribution to its UV-B stress-coping strategy.
Description
Keywords
Chern-Simons theory , BTZ black holes , quasinormal modes , torsion , Dirac fields
Citation
10.1111/ppl.12536