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Decomposition of Calcium Oxalate Crystals in under CO Limiting Conditions. | LitMetric

Decomposition of Calcium Oxalate Crystals in under CO Limiting Conditions.

Plants (Basel)

Laboratorio de Fisiología y Biología Molecular Vegetal, Instituto de Agroindustria, Departamento de Ciencias Agronómicas y Recursos Naturales, Facultad de Ciencias Agropecuarias y Forestales & Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, 1145 Temuco, Chile.

Published: October 2020

AI Article Synopsis

Article Abstract

Calcium oxalate (CaOx) crystals are widespread among plant species. Their functions are not yet completely understood; however, they can provide tolerance against multiple environmental stress factors. Recent evidence suggested that CaOx crystals function as carbon reservoirs since its decomposition provides CO that may be used as carbon source for photosynthesis. This might be advantageous in plants with reduced mesophyll conductance, such as the Antarctic plant , which have shown CO diffusion limitations. In this study, we evaluate the effect of two CO concentrations in the CaOx crystals decomposition and chlorophyll fluorescence of . Plants were exposed to airflows with 400 ppm and 11.5 ppm CO and the number and relative size of crystals, electron transport rate (ETR), and oxalate oxidase (OxO) activity were monitored along time (10 h). Here we showed that leaf crystal area decreases over time in plants with 11.5 ppm CO, which was accompanied by increased OxO activity and only a slight decrease in the ETR. These results suggested a relation between CO limiting conditions and the CaOx crystals decomposition in . Hence, crystal decomposition could be a complementary endogenous mechanism for CO supply in plants facing the Antarctic stressful habitat.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7600318PMC
http://dx.doi.org/10.3390/plants9101307DOI Listing

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