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- Title
Can sugar metabolism in the cambial region explain the water deficit tolerance in poplar?
- Authors
Traversari, Silvia; Francini, Alessandra; Sebastiani, Luca; Traversi, Maria Laura; Emiliani, Giovanni; Sorce, Carlo; Giovannelli, Alessio
- Abstract
Drought dramatically affects wood production by adversely impacting cambial cells and their derivatives. Photosynthesis and assimilate transport are also affected by drought conditions. Two poplar genotypes, Populus deltoides ‘Dvina’ and Populus alba ‘Marte’, demonstrated contrasting growth performance and water–carbon balance strategies; a mechanistic understanding of the water deficit response was provided by these poplar species. ‘Marte’ was found to be more anisohydric than ‘Dvina’. This characteristic was associated with the capacity to reallocate carbohydrates during water deficits. In contrast, ‘Dvina’ displayed more conservative water management; carbohydrates were preferably stored or used for cellulose production rather than to achieve an osmotic balance between the phloem and the xylem. Data confirmed that the more ‘risk-taking’ characteristic of ‘Marte’ allowed a rapid recovery following water deficit and was connected to a different carbohydrate metabolism.
- Subjects
CAMBIUM; CARBOHYDRATE content of plants; PLANT metabolism; EFFECT of drought on plants; POPULUS alba
- Publication
Journal of Experimental Botany, 2018, Vol 69, Issue 16, p4083
- ISSN
0022-0957
- Publication type
Article
- DOI
10.1093/jxb/ery195