[en] During evolution, plants have faced countless stresses of both biotic and abiotic nature developing very effective mechanisms able to perceive and counteract adverse signals. The biggest challenge is the ability to fine-tune the trade-off between plant growth and stress resistance. The Antarctic plant Colobanthus quitensis has managed to survive the adverse environmental conditions of the white continent and can be considered a wonderful example of adaptation to prohibitive conditions for millions of other plant species. Due to the progressive environmental change that the Antarctic Peninsula has undergone over time, a more comprehensive overview of the metabolic features of C. quitensis becomes particularly interesting to assess its ability to respond to environmental stresses. To this end, a differential proteomic approach was used to study the response of C. quitensis to different environmental cues. Many differentially expressed proteins were identified highlighting the rewiring of metabolic pathways as well as defense responses. Finally, a different modulation of oxidative stress response between different environmental sites was observed. The data collected in this paper add knowledge on the impact of environmental stimuli on plant metabolism and stress response by providing useful information on the trade-off between plant growth and defense mechanisms.
Bertini, Laura; Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
Proietti, Silvia ; Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
Fongaro, Benedetta ; Université de Liège - ULiège > Integrative Biological Sciences (InBioS) ; Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35100 Padova, Italy
Holfeld, Aleš; Institute of Molecular Systems Biology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland
Picotti, Paola; Institute of Molecular Systems Biology, Department of Biology, ETH Zurich, 8093 Zurich, Switzerland
Falconieri, Gaia Salvatore ; Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
Bizzarri, Elisabetta; Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
Capaldi, Gloria; Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
Polverino de Laureto, Patrizia ; Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35100 Padova, Italy
Caruso, Carla ; Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
Language :
English
Title :
Environmental Signals Act as a Driving Force for Metabolic and Defense Responses in the Antarctic Plant Colobanthus quitensis.
MIUR - Ministry of Education, University and Research [IT]
Funding text :
This research was funded by Ministry of University and Scientific Research (MUR), in the framework of the PNRA (National Program for Antarctic Research), grant number PNRA16_00068.The authors wish to thank the INACH (Instituto Antártico Chileno) for the logistic support from Chile to King George Island and vice versa and the Henrik Arctowski Research Station members for their great hospitality and collaboration with logistics. We also thank our colleague Cristina Moscatelli for the soil texture analyses. This paper is dedicated to the beloved memory of our colleague and friend Marina Tucci.
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