La aplicación de nanoparticulas de SiO2 como pretratamiento disminuye el impacto de la sequía en la performance fisiológica de Prunus mahaleb (Rosaceae)
| Autor: | Mehrdad Zarafshar, Masoud Tabari, Gustavo Gabriel Striker, Daniel K. Struve, Javad Mirzaie, Peyman Ashkavand, S K Bordbar, Amirreza Nikpour |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Irrigation Stomatal conductance Rosaceae STRESS ALLEVIATION Plant Science drought Photosynthesis 01 natural sciences Prunus Dry weight PRE-TREATMENT lcsh:Botany lcsh:Science SILICA NANOPARTICLES Ecology Evolution Behavior and Systematics DROUGHT Transpiration photosynthesis biology PHOTOSYNTHESIS 04 agricultural and veterinary sciences biology.organism_classification Pre-treatment Silica nanoparticles lcsh:QK1-989 Horticulture Sio2 nanoparticles 040103 agronomy & agriculture 0401 agriculture forestry and fisheries lcsh:Q stress alleviation 010606 plant biology & botany |
| Zdroj: | Boletín de la Sociedad Argentina de Botánica Vol.53, no.2 FAUBA Digital (UBA-FAUBA) Universidad de Buenos Aires. Facultad de Agronomía instacron:UBA-FAUBA Boletín de la Sociedad Argentina de Botánica, Vol 53, Iss 2 (2018) |
| Popis: | Fil: Ashkavand, Peyman. Tarbiat Modares University. Faculty of Natural Resources and Marine Sciences, Department of Forestry. Iran. Fil: Zarafshar, Mehrdad. Fars Agricultural and Natural Resources Research and Education Center. Department of Natural Resources. Fars, Iran. Fil: Tabari, Masoud. Tarbiat Modares University, Faculty of Natural Resources and Marine Sciences, Department of Forestry. Iran. Fil: Mirzaie, Javad. University of Ilam. Faculty of Agriculture. Department of Forest Sciences. Iran. Fil: Nikpour, Amirreza. University of Agricultural Sciences and Natural Resources. Department of Forest Sciences. Gorgan, Iran. Fil: Bordbar, Seyed Kazem. Fars Agricultural and Natural Resources Research and Education Center. Department of Natural Resources. Fars, Iran. Fil: Struve, Daniel. The Ohio State University. Department of Horticulture and Crop Science. USA. Fil: Striker, Gustavo Gabriel. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. We studied the physiological responses of Prunus mahaleb (Mahaleb) seedlings to drought stress when previously irrigated (or not) with different concentrations of SiO2 nanoparticles (SNPs). SNPs were applied at four concentrations (0, 10, 50 and 100 mg L-1) for 45 days, and then seedlings were subjected to three watering treatments including low (300 mL water every 3 d), moderate (150 mL water every 3 d) and severe drought stress (no irrigation) for 19 days. Results showed that gas exchange – photosynthesis, stomatal conductance, and transpiration rate – were significantly less impacted by severe drought stress when seedlings were pretreated with SNPs at high concentrations. Beneficial effects of SNPs pretreatment were evident in the nutritional status of the plants as the concentration of N, P and K, were maintained at similar levels than in well-watered seedlings. Pretreated seedlings were able to maintain the root length and to reduce the impact of severe drought on root dry mass accumulation. Therefore, application of SNPs as pretreatment should be considered as a promising agronomic practice in sites prone to suffer from water deficit. grafs., tbls. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|