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Trans-aconitic Acid Inhibits the Growth and Photosynthesis of Glycine Max

Trans-aconitic Acid Inhibits the Growth and Photosynthesis of Glycine Max

Tiara da Silva Coelho Bortolo, Rogério Marchiosi, Joselaine Viganó, Rita de Cássia Siqueira-Soares, Ana Paula Ferro, Gabriela Elen Barreto, Graciene de Souza Bido, Josielle Abrahão, Wanderley Dantas Dos Santos, etc.

Plant Physiol Biochem. 2018 Nov;132:490-496.

PMID: 30292981

Abstract:

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP585842	cis-Aconitic acid		585-84-2	Price

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