Article (Scientific journals)
High temperatures limit plant growth but hasten flowering in root chicory (Cichorium intybus) independently of vernalisation.
Mathieu, Anne-Sophie; Lutts, Stanley; Vandoorne, Bertrand et al.
2013In Journal of Plant Physiology, 171 (2), p. 109-118
Peer Reviewed verified by ORBi
 

Files


Full Text
Mathieu et al 2013.doc
Author preprint (17.64 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Abstract :
[en] An increase in mean and extreme summer temperatures is expected as a consequence of climate changes and this might have an impact on plant development in numerous species. Root chicory (Cichorium intybus L.) is a major crop in northern Europe, and it is cultivated as a source of inulin. This polysaccharide is stored in the tap root during the first growing season when the plant grows as a leafy rosette, whereas bolting and flowering occur in the second year after winter vernalisation. The impact of heat stress on plant phenology, water status, photosynthesis-related parameters, and inulin content was studied in the field and under controlled phytotron conditions. In the field, plants of the Crescendo cultivar were cultivated under a closed plastic-panelled greenhouse to investigate heat-stress conditions, while the control plants were shielded with a similar, but open, structure. In the phytotrons, the Crescendo and Fredonia cultivars were exposed to high temperatures (35 °C day/ 28 °C night) and compared to control conditions (17 °C) over 10 weeks. In the field, heat reduced the root weight, the inulin content of the root and its degree of polymerisation in non-bolting plants. Flowering was observed in 12% of the heat stressed plants during the first growing season in the field. In the phytotron, the heat stress increased the total number of leaves per plant, but reduced the mean leaf area. Photosynthesis efficiency was increased in these plants, whereas osmotic potential was decreased. High temperature was also found to induce flowering of up to 50% of these plants, especially for the Fredonia cultivar. In conclusion, high temperatures induced a reduction in the growth of root chicory, although photosynthesis is not affected. Flowering was also induced, which indicates that high temperatures can partly substitute for the vernalisation requirement for the flowering of root chicory
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Mathieu, Anne-Sophie;  Université Catholique de Louvain - UCL > Groupe de Recherche en Physiologie végétale
Lutts, Stanley;  Université Catholique de Louvain - UCL > Groupe de Recherche en Physiologie végétale
Vandoorne, Bertrand
Descamps, Christophe
Périlleux, Claire ;  Université de Liège - ULiège > Département des sciences de la vie > Physiologie végétale
Dielen, Vincent;  Cosucra - Groupe Warcoing
Van Herck, Jean-Claude
Quinet, Muriel;  Université Catholique de Louvain - UCL > Groupe de Recherche en Physiologie végétale
Language :
English
Title :
High temperatures limit plant growth but hasten flowering in root chicory (Cichorium intybus) independently of vernalisation.
Publication date :
2013
Journal title :
Journal of Plant Physiology
ISSN :
0176-1617
Publisher :
Urban & Fischer, Jena, Germany
Volume :
171
Issue :
2
Pages :
109-118
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
SPW - DGO3
Available on ORBi :
since 23 September 2013

Statistics


Number of views
216 (7 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
19
Scopus citations®
without self-citations
13
OpenCitations
 
18

Bibliography


Similar publications



Contact ORBi