Organ-specific metabolic responses to drought in Pinus pinaster Ait
| Autor: | Nuria de María, Marina de Miguel, Nalini Desai, María-Teresa Cervera, Estrella Cadahía, Jose Antonio Mancha, David Sánchez-Gómez, Ismael Aranda, Luis Diaz, Brígida Fernández de Simón, M. Ángeles Guevara |
|---|---|
| Přispěvatelé: | Biodiversité, Gènes & Communautés (BioGeCo), Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology (INIA) |
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
0301 basic medicine Candidate gene Antioxidant Physiology genotype [SDV]Life Sciences [q-bio] medicine.medical_treatment Drought tolerance drought Plant Science Biology 01 natural sciences Malate dehydrogenase Plant Roots 03 medical and health sciences Malate Dehydrogenase Stress Physiological Botany Genetics medicine Juvenile Plant Proteins 2. Zero hunger pinus pinaster heterophylly fungi metabolic profiling food and beverages Water Metabolism root biology.organism_classification Pinus 030104 developmental biology Organ Specificity aerial organs Pinus pinaster 010606 plant biology & botany Transcription Factors |
| Zdroj: | Repositorio de Resultados de Investigación del INIA Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA Plant Physiology and Biochemistry Plant Physiology and Biochemistry, Elsevier, 2016, 102, pp.17-26. ⟨10.1016/j.plaphy.2016.02.013⟩ INIA: Repositorio de Resultados de Investigación del INIA |
| ISSN: | 1873-2690 0981-9428 |
| Popis: | Drought is an important driver of plant survival, growth, and distribution. Water deficit affects different pathways of metabolism, depending on plant organ. While previous studies have mainly focused on the metabolic drought response of a single organ, analysis of metabolic differences between organs is essential to achieve an integrated understanding of the whole plant response. In this work, untargeted metabolic profiling was used to examine the response of roots, stems, adult and juvenile needles from Pinus pinaster Ait. full-sib individuals, subjected to a moderate and long lasting drought period. Cyclitols content showed a significant alteration, in response to drought in all organs examined, but other metabolites increased or decreased differentially depending on the analyzed organ. While a high number of flavonoids were only detected in aerial organs, an induction of the glutathione pathway was mainly detected in roots. This result may reflect different antioxidant mechanisms activated in aerial organs and roots. Metabolic changes were more remarkable in roots than in the other organs, highlighting its prominent role in the response to water stress. Significant changes in flavonoids and ascorbate metabolism were also observed between adult and juvenile needles, consistent with previously proven differential functional responses between the two developmental stages. Genetic polymorphisms in candidate genes coding for a Myb1 transcription factor and a malate dehydrogenase (EC 1.1.1.37) were associated with different concentration of phenylalanine, phenylpropanoids and malate, respectively. The results obtained will support further research on metabolites and genes potentially involved in functional mechanisms related to drought tolerance in trees. © 2016 Elsevier Masson SAS. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect