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Differences in photosynthesis and terpene content in leaves and roots of wild-type and transgenic Arabidopsis thaliana plants
Blanch Roure, Josep-Salvador (Centre de Recerca Ecològica i Aplicacions Forestals)
Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Llusià Benet, Joan (Centre de Recerca Ecològica i Aplicacions Forestals)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i Aplicacions Forestals)
Owen, Susan M. (Centre de Recerca Ecològica i Aplicacions Forestals)

Date: 2015
Abstract: We investigated the hypotheses that two different varieties of Arabidopsis thaliana show differences in physiology and terpene production. The two varieties of A. thaliana used in this study were wildtype (WT) and transgenic line (CoxIVFaNES I) genetically modified to emit nerolidol with linalool/nerolidol synthase (COX). Photosynthetic rate, electron transport rate, fluorescence, leaf volatile terpene contents and root volatile terpene contents were analyzed. For both types, we found coeluting αpinene+βocimene, limonene, and humulene in leaves; and in the roots we found coeluting αpinene+βocimene, sabinene+βpinene, βmyrcene, limonene, and humulene. At the end of the growing cycle, COX plants tended to have lower pools of terpene compounds in their leaves, with 78. 6% lower photosynthesis rates and 30. 8% lower electron transport rates, compared with WT plants at that time. The maximal photochemical efficiency Fv/Fm was also significantly lower (25. 5%) in COX plants, indicating that these varieties were more stressed than WT plants. However, COX plants had higher (239%) root terpene contents compared to WT plants. COX plants appear to favor root production of volatile terpenes rather than leaf production. Thus we conclude that there were significant differences between COX and WT plants in terms of terpenoid pools, stress status and physiology.
Note: Número d'acord de subvenció EC/FP7/610028
Note: Número d'acord de subvenció MINECO/CGL2013-48074-P
Note: Número d'acord de subvenció AGAUR/2014/SGR-274
Rights: Tots els drets reservats
Language: Anglès
Document: article ; recerca ; submittedVersion
Subject: Arabidopsis thaliana ; FaNES I ; Leaf terpene contents ; Root terpene contents ; Photosynthesis
Published in: Russian Journal of Plant Physiology, Vol. 62, No. 6, p. 823-829 (2015) , ISSN 1021-4437

DOI: 10.1134/S1021443715060035


Pre-print
20 p, 234.4 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
Articles > Research articles
Articles > Published articles

 Record created 2015-10-05, last modified 2020-08-16



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