Arango, Jacobo

Cardoso Arango, Juan Andrés

Vega, José de

Villegas, Daniel

English

Villegas, Daniel Mauricio

CGSpace (CGIAR)

IntroductionObjective MethodologyResultsConclusionsAcknowledgments: The authors would like to acknowledge support from the UK Research and Innovation (UKRI) Global Challenges Research Fund (GCRF) GROW Colombia grant via the UK’s Biotechnology and Biological Sciences Research Council (BB/P028098/1).www.growcolombia.orgReferencesPHYTOEXTRACTION POTENTIAL OF TROPICAL FORAGE GRASSESAuthors: Juan Andrés Cardoso1, Daniel Villegas1, Jose de Vega2 and Jacobo Arango1Institutions: 1 The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT)2 Earlham Institute, Norwich, United Kingdom• Tropical forages (i.e., plants used to feed animals, mostly cattle) can lead to a more sustainable land management. • Latest reports suggest that Cadmium pollution is an increasing problem in Colombia, particularly prevalent in acid soils• Cadmium is both toxic to plants and animals• Most of Colombian territory is comprised by acidic to acid soils. • Acid soils facilitate cadmium uptake by plants.• Phytoextraction (the ability of plants to remove dangerous elements or compounds from soil or water, most usually heavy metals) seems to be  a cheap alternative for reclamation of contaminated land.  To identify tropical grasses able to tolerate and uptake Cadmium (solution culture).Comparison of Phytoextraction potential in two grasses• Two plants with contrasting type of growth were tested (B. humidicola, creeping plant; Napier grass, erect one)Our preliminary results show that:• Among a number of grasses tested, Napier grass can extract significant amounts of Cadmium, to the level of a hyper-accumulator plant.• It was possible to recover up to 90% cadmium from plant tissue. This might allow the use of such tissue for another purposes (e.g., feed for animals, biofuel).• Research is underway to test responses of a number of grasses for Cadmium phytoextraction soil and field conditions respectively.• We expect that information originated from this project will increase awareness of the roles and utilities that tropical forages can brought up at farm, catchment and landscape levels, and also can further enrich their multifunctional use in Colombia and elsewhere. • Yang et al. 2017. Phytoextraction of cadmium-contaminated soil and potential of regenerated tobaccio biomass for recovery of cadmium. Scientific Reports 7: 7210• Ishii et al. 2015. Cadmium phytoremediation potential of Napier grass cultivated in Kyushu, Japan. Applied and Environmental Soil Science 2015: 1Acknowledgments:The authors would like to acknowledge support from the UK Research and In ovation (UKRI) Global Challenges Research Fund (GCRF) GROW Colombia grant via the UK’s Biotechnology and Biological Research Council (BB/P028098/1)www. growcolombia.orgCGIAR Research Program on Livestockhttps://livestock.cgiar.org/To identify some physiological mechanisms or traits behind tolerance to Cadmium/phytoextractionn ability Test ability to extract cadmium from plant tissueTest identified material under soil conditions Hydroponic solution culture experiments with 100 ppm Cadmium added (to mimic Cadmium polluted soils).Harvesting of plants (fractioning of leaves, stems and roots) after 20 days of growth under solutions with or without added Cadmium.Analyses of biomass accumulation under different treatmets, Cadmium content in tissues and other relevant physiological responses (e.g., chlorophyll content, stomatal conductance, root elongation rates).Phytoextraction potential of Napier grass• Cadmium accumulated mostly in above ground tissue• Nutrient disorders were symptoms associated with excess of cadmium, but only noticeable after ~40 days old plants• > 90% of Cd could be recovered from shoot tissue by washing tissue on solutions of 0.5 N HCL 

Phytoextraction potential of tropical forage grasses

https://cgspace.cgiar.org/bitstream/10568/106857/1/Phytoextraction%20potential%20of%20tropical%20forages.pdf

Phytoextraction potential of tropical forage grasses

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