Trans-aconitic acid inhibits the growth and photosynthesis of Glycine max
| Autor: | Josielle Abrahão, Graciene de Souza Bido, Gabriela Elen Barreto, Tiara da Silva Coelho Bortolo, Wanderley Dantas dos Santos, Joselaine Viganó, Rogério Marchiosi, Osvaldo Ferrarese-Filho, Rita de Cássia Siqueira-Soares, Ana Paula Ferro |
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| Rok vydání: | 2018 |
| Předmět: |
Chlorophyll
0106 biological sciences 0301 basic medicine Stomatal conductance Cell Membrane Permeability Membrane permeability Photosystem II Physiology Plant Science Root system Photosynthesis Plant Roots 01 natural sciences Fluorescence 03 medical and health sciences chemistry.chemical_compound Aconitic acid Genetics Incubation Photosystem Chemistry Aconitic Acid Hydrogen Peroxide Solutions 030104 developmental biology Plant Stomata Biophysics Gases Soybeans 010606 plant biology & botany |
| Zdroj: | Plant Physiology and Biochemistry. 132:490-496 |
| ISSN: | 0981-9428 |
| Popis: | Grasses producing trans-aconitic acid, a geometric isomer of cis-aconitic acid, are often used in Glycine max rotation systems. However, the effects of trans-aconitic acid on Glycine max are unknown. We conducted a hydroponic experiment to evaluate the effects of 2.5–10 mM trans-aconitic acid on Glycine max growth and photosynthesis. The results revealed that the enhanced H2O2 production in the roots increased the membrane permeability and reduced the water uptake. These effects culminated with a reduced stomatal conductance (gs), which seems to be the main cause for a decreased photosynthetic rate (A). Due to low gs, the limited CO2 assimilation may have overexcited the photosystems, as indicated by the high production of H2O2 in leaves. After 96 h of incubation, and due to H2O2-induced damage to photosystems, a probable non-stomatal limitation for photosynthesis contributed to reducing A. This is corroborated by the significant decrease in the quantum yield of electron flow through photosystem II in vivo (ΦPSII) and the chlorophyll content. Taken together, the damage to the root system and photosynthetic apparatus caused by trans-aconitic acid significantly reduced the Glycine max plant growth. |
| Databáze: | OpenAIRE |
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