The level of environmental noise affects the physiological performance of Glycine max under water deficit
| Autor: | Bertolli, Suzana Chiari [UNESP], Souza, Gustavo M. |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade do Oeste Paulista, Univ Oeste Paulista |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Theoretical and Experimental Plant Physiology, Volume: 25, Issue: 1, Pages: 36-45, Published: 2013 SciELO Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Theoretical and Experimental Plant Physiology v.25 n.1 2013 Theoretical and Experimental Plant Physiology Sociedade Brasileira de Fisiologia Vegetal (SBFV) instacron:SBFV Web of Science |
| Popis: | Made available in DSpace on 2020-12-10T16:54:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Plants in natural environments are subjected to a multitude of environmental cues. However, studies addressing physiological analyzes are usually focused on the isolation of a stress factor, making it difficult to understand plants behavior in their extremely complex natural environments. Herein, we analyzed how environmental variability (noise) may influence physiological processes of Glycine max under water deficit conditions. The plants were kept in a greenhouse (semi-controlled environment - E-SC) and in a growth chamber (controlled environment - E-C) under two water regime conditions (100 and 30% of replacement of the water lost by evapotranspiration) for 30 days. The environmental variability was daily monitored with automatic sensors to record temperature, humidity, and irradiance. The physiological responses were analyzed by leaf gas exchanges, chlorophyll fluorescence, biomembrane integrity, and growth parameters. The results showed that water deficiency caused significant reductions in the physiological parameters evaluated. However, the environment with high variability (E-SC) caused more extensive damages to biomembranes, regardless the water regime likely compromising physiological efficiency. The lower variability of E-C promoted higher efficiency of total biomass production in both water regimes compared to the E-SC. Therefore, our results support the hypothesis that more variable environmental conditions can limit the growth of Glycine max in response to the fluctuation of resources, therefore amplifying the effect of water deficit. Univ Estadual Paulista Julio de Mesquita Filho UN, Bot Dept, Rio Claro, SP, Brazil Univ Oeste Paulista, Plant Ecol Cognit Lab, Presidente Prudente, SP, Brazil Univ Estadual Paulista Julio de Mesquita Filho UN, Bot Dept, Rio Claro, SP, Brazil FAPESP: 2008/57571-1 FAPESP: 2009/11212-3 |
| Databáze: | OpenAIRE |
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