Trans-aconitic acid inhibits the growth and photosynthesis of Glycine max.

Autor: Bortolo TDSC; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Marchiosi R; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Viganó J; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Siqueira-Soares RC; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Ferro AP; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Barreto GE; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Bido GS; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Abrahão J; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Dos Santos WD; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil., Ferrarese-Filho O; Laboratory of Plant Biochemistry, Department of Biochemistry, University of Maringá, Paraná, Brazil. Electronic address: osferrarese@gmail.com.
Jazyk: angličtina
Zdroj: Plant physiology and biochemistry : PPB [Plant Physiol Biochem] 2018 Nov; Vol. 132, pp. 490-496. Date of Electronic Publication: 2018 Sep 28.
DOI: 10.1016/j.plaphy.2018.09.036
Abstrakt: 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 H 2 O 2 production in the roots increased the membrane permeability and reduced the water uptake. These effects culminated with a reduced stomatal conductance (g s ), which seems to be the main cause for a decreased photosynthetic rate (A). Due to low g s , the limited CO 2 assimilation may have overexcited the photosystems, as indicated by the high production of H 2 O 2 in leaves. After 96 h of incubation, and due to H 2 O 2 -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 (Φ PSII ) 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.
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Databáze: MEDLINE
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