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EnglishPhysiological, biochemical and morpho-anatomical traits that determine the phenotypic plasticity of plants under drought were tested in two Arundinoideae with contrasting habitats, growth traits and metabolism: the fast-growing Arundo donax, which also is a strong isoprene emitter, and the slow-growing Hakonechloa macra that does not invest on isoprene biosynthesis. In control conditions, A. donax displayed not only higher photosynthesis but also higher concentration of carotenoids and lower phenylpropanoid content than H. macra. In drought-stressed plants, photosynthesis was similarly inhibited in both species, but substantially recovered only in A. donax after rewatering. Decline of photochemical and biochemical parameters, increased concentration of CO2 inside leaves, and impairment of chloroplast ultrastructure were only observed in H. macra indicating damage of photosynthetic machinery under drought. It is suggested that volatile and non-volatile isoprenoids produced by A. donax efficiently preserve the chloroplasts fromtransient drought damage, while H. macra invests on phenylpropanoids that are less efficient in preserving photosynthesis but likely offer better antioxidant protection under prolonged stress
Velikova, V.B.; Brunetti, C.; Tattini, M.; Doneva, D.; Ahrar, M.; Tsonev, T.; Stefanova, M.; Ganeva, T.; Gori, A.; Ferrini, F.; Varotto, C.; Loreto, F. (2016). Physiological significance of isoprenoids and phenylpropanoids in drought response of Arundinoideae species with contrasting habitats and metabolism. PLANT, CELL & ENVIRONMENT, 39 (10): 2185-2197. doi: 10.1111/pce.12785 handle: http://hdl.handle.net/10449/38131
| Citation: | Velikova, V.B.; Brunetti, C.; Tattini, M.; Doneva, D.; Ahrar, M.; Tsonev, T.; Stefanova, M.; Ganeva, T.; Gori, A.; Ferrini, F.; Varotto, C.; Loreto, F. (2016). Physiological significance of isoprenoids and phenylpropanoids in drought response of Arundinoideae species with contrasting habitats and metabolism. PLANT, CELL & ENVIRONMENT, 39 (10): 2185-2197. doi: 10.1111/pce.12785 handle: http://hdl.handle.net/10449/38131 | |
| Internal authors: | ||
| Organization unit: | CRI [2011-01 - today]: DEPARTMENT OF BIODIVERSITY AND MOLECULAR ECOLOGY | |
| Authors: | Velikova, V.B.; Brunetti, C.; Tattini, M.; Doneva, D.; Ahrar, M.; Tsonev, T.; Stefanova, M.; Ganeva, T.; Gori, A.; Ferrini, F.; Varotto, C.; Loreto, F. | |
| Title: | Physiological significance of isoprenoids and phenylpropanoids in drought response of Arundinoideae species with contrasting habitats and metabolism | |
| Journal: | PLANT, CELL & ENVIRONMENT | |
| Issue Date: | 2016 | |
| Scientific Disciplinary Area: | Settore BIO/02 - BOTANICA SISTEMATICA | |
| Keywords ENG: | Arundo donax Hakonechloa macra Abscisic acid Chloroplast ultrastructure Isoprene Leaf anatomy Xanthophylls | |
| Language: | English | |
| IF: | With Impact Factor ISI | |
| Publication status: | Published | |
| Nature of content: | Articolo in rivista/Article | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1111/pce.12785 | |
| EU grant: | 7° Programma quadro (FP7) | |
| EU grant agreement number: | 282910 | |
| Other grant project: | Autonomous Province of Trento (Italy), MAN-VIP project | |
| Appears in Collections: | 01 - Journal article |
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