Canna~Fangled Abstracts

Application of sulphate and cytokinin in assisted arsenic phytoextraction by industrial Cannabis sativa L

By April 23, 2021No Comments
. 2021 Apr 23.

doi: 10.1007/s11356-021-14074-3.

Online ahead of print.
Martina Grifoni 1, Irene Rosellini 2, Gianniantonio Petruzzelli 2, Francesca Pedron 2, Elisabetta Franchi 3, Meri Barbafieri 2
Affiliations 

Abstract

Phytoextraction is currently investigated to effectively remediate soil contaminated by metals and provide highly competitive biomass for energy production. This research aimed to increase arsenic (As) removal from contaminated soil using industrial Cannabis sativa L., a suitable energy crop for biofuel production. Assisted phytoextraction experiments were conducted on a microcosm scale to explore the ability of two friendly treatments, sodium sulphate (SO4) and exogenous cytokinin (CK), in increasing As phytoextraction efficiency. The results showed that the treatments significantly increased As phytoextraction. Cytokinin was the most effective agent for effectively increasing translocation and the amount of As in aerial parts of C. sativa. In fact, the concentration of As in the shoots of CK-treated plants increased by 172% and 44% compared to untreated and SO4-treated plants, respectively. However, the increased As amount accumulated in C. sativa tissues due to the two treatments negatively affected plant growth. Arsenic toxicity caused a significant decrease in aerial C. sativa biomass treated with CK and SO4 of about 32.7% and 29.8% compared to untreated plants, respectively. However, for our research purposes, biomass reduction has been counterbalanced by an increase in As phytoextraction, such as to consider C. sativa and CK an effective combination for the remediation of As-contaminated soils. Considering that C. sativa has the suitable characteristics to provide valuable resources for bioenergy production, our work can help improve the implementation of a sustainable management model for As contaminated areas, such as phytoremediation coupled with bioenergy generation.

 

Keywords: Cytokinin, Energy crops, Green and sustainable remediation, Phytobiomass, Plant growth regulator, Soil pollution

References

    1. Abbas G, Murtaza B, Bibi I, Shahid M, Niazi N, Khan M, Amjad M, Hussain M, Natasha (2018) Arsenic uptake, toxicity, detoxification, and speciation in plants: physiological, biochemical, and molecular aspects. Int J Environ Res Public Health 15:59. https://doi.org/10.3390/ijerph15010059 – DOI
    1. Austruy A, Wanat N, Moussard C, Vernay P, Joussein E, Ledoigt G, Hitmi A (2013) Physiological impacts of soil pollution and arsenic uptake in three plant species: Agrostis capillaris, Solanum nigrum and Vicia faba. Ecotoxicol Environ Saf 90:28–34. https://doi.org/10.1016/J.ECOENV.2012.12.008 – DOI
    1. Barbafieri M (2016) Use of phytohormones for strengthening metal (loid) phytoextraction: limitations and a case study. In: Ahammed GJ, Yu J (eds) Plant hormones under challenging environmental factors. Springer, Dordrecht, pp 157–179
    1. Barbafieri M, Japenga J, Romkens P, Petruzzelli G, Pedron F (2013) Protocols for applying phytotechnologies in metal-contaminated soils. In: Dharmendra Kumar Gupta (ed) Plant-Based Remediation Processes. Springer, Berlin Heidelberg, pp 19–37 – DOI
    1. Barbafieri M, Morelli E, Tassi E, Pedron F, Remorini D, Petruzzelli G (2018) Overcoming limitation of “recalcitrant areas” to phytoextraction process: the synergistic effects of exogenous cytokinins and nitrogen treatments. Sci Total Environ 639:1520–1529. https://doi.org/10.1016/J.SCITOTENV.2018.05.175 – DOI

Leave a Reply