Academic Journal
Day and blue light modify growth, cell physiology and indole-3-acetic acid production of Azospirillum brasilense Az39 under planktonic growth conditions
| العنوان: | Day and blue light modify growth, cell physiology and indole-3-acetic acid production of Azospirillum brasilense Az39 under planktonic growth conditions |
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| المؤلفون: | Molina, Romina Micaela, Lopez, Gaston Alberto, Coniglio, Nayla Anahí, Furlan, Ana Laura, Mora, Maria Veronica, Rosas, Susana Beatriz, Cassan, Fabricio Dario |
| بيانات النشر: | Wiley Blackwell Publishing, Inc |
| المجموعة: | CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
| مصطلحات موضوعية: | AZOSPIRILLUM, BIOFILMS, CELL AGGREGATION, INDOLE-3-ACETIC ACID, LIGHT ENVIRONMENT, OXIDATIVE STRESS, https://purl.org/becyt/ford/1.6, https://purl.org/becyt/ford/1 |
| الوصف: | In this work, we evaluated the effects of light on growth, cell physiology and stress response of Azospirillum brasilense Az39, a non-photosynthetic rhizobacteria, under planktonic growth conditions. Methods and results: Exponential cultures of Az39 were exposed to blue (BL), red (RL) and daylight (DL) or maintained in darkness for 24, 48 and 72 h. The biomass production and indole 3-acetic acid (IAA) biosynthesis increased by exposition to DL. Conversely, BL decreased IAA concentration through a direct effect on the molecule. The DL increased superoxide dismutase activity, hydrogen peroxide and thiobarbituric acid reactive substances levels, but the last one was also increased by BL. Both DL and BL increased cell aggregation but only BL increased biofilm formation. Conclusions: We demonstrated that both BL and DL are stress effectors for A. brasilense Az39 under planktonic growth conditions. The DL increased biomass production, IAA biosynthesis and bacterial response to stress, whereas BL induced cell aggregation and biofilms formation, but decreased the IAA concentration by photooxidation. Significance and Impact of the Study: Blue light and DL changes growth capacity, cell physiology and plant growth promotion ability of A. brasilense Az39 and these changes could be considered to improve the production and functionality of biofertilizers. ; Fil: Molina, Romina Micaela. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones Agrobiotecnológicas - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Agrobiotecnológicas; Argentina ; Fil: Lopez, Gaston Alberto. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones Agrobiotecnológicas - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Agrobiotecnológicas; ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1364-5072 1365-2672 |
| Relation: | http://hdl.handle.net/11336/146483; Molina, Romina Micaela; Lopez, Gaston Alberto; Coniglio, Nayla Anahí; Furlan, Ana Laura; Mora, Maria Veronica; et al.; Day and blue light modify growth, cell physiology and indole-3-acetic acid production of Azospirillum brasilense Az39 under planktonic growth conditions; Wiley Blackwell Publishing, Inc; Journal of Applied Microbiology; 130; 5; 5-2021; 1671-1683; CONICET Digital; CONICET |
| الاتاحة: | http://hdl.handle.net/11336/146483 |
| Rights: | info:eu-repo/semantics/openAccess ; https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
| رقم الانضمام: | edsbas.8BA606E7 |
| قاعدة البيانات: | BASE |
| تدمد: | 13645072 13652672 |
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