| Full text | |
| Author(s): |
Lima, Leticia Rigonato
[1]
;
Silva, Higor Ferreira
[1]
;
Brignoni, Alcindo Souza
[1]
;
Silva, Fabiano Guimaraes
[1]
;
Camargos, Liliane Santos
[2]
;
Souza, Lucas Anjos
[3]
Total Authors: 6
|
| Affiliation: | [1] Inst Fed Educ Ciencia & Tecnol Goiano, Campus Rio Verde, Rio Verde, GO - Brazil
[2] Univ Estadual Paulista UNESP, Fac Engn, Dept Biol & Zootecnia, Lab Fisiol Metab Vegetal, Ilha Solteira, SP - Brazil
[3] Inst Fed Educ Ciencia & Tecnol Goiano, Polo Inovacao Bioenergia & Graos, Campus Rio Verde, Rio Verde, GO - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS; v. 25, n. 2, p. 433-441, MAR 2019. |
| Web of Science Citations: | 3 |
| Abstract | |
In order to decrease the concentration of toxic metals in contaminated lands, phytoextraction can be suitable considering the use of plant species with high potential for biomass production, such as biomass sorghum (Sorghum bicolor L.). We assessed a biomass sorghum (BRS716) potential as a copper phytoextractor as well as the physiological stability under this stressful condition. A completely randomized experimental design was used for a greenhouse experiment in which sorghum plants were submitted to a range of Cu2+ concentrations: 2.3, 10.9, 19.6, 30.5, 37.6 and 55.6mgdm(-3). The plant growth was not affected by increasing Cu2+ concentrations, suggesting that this species is tolerant to copper. There was a decrease in photosynthetic rate according to the increase in Cu2+ concentration, but not at a level that could disturb plant metabolism and eventual death. The values obtained for transfer index ranged from 0.62 to 0.11 which evidenced the restriction of Cu2+ transport to the aerial parts. The more Cu2+ available in soil, the smaller the amount of Cu2+ transported to aerial partsof sorghum. So, our results show that biomass sorghum has potential to be used for Cu2+ phytoextraction in concentration of up to 20mgdm(-3). Also, in heavily Cu2+ polluted sites, it can be used to produce biomass for bioenergy purpose, promoting a low rate of Cu2+ extraction. (AU) | |
| FAPESP's process: | 15/09567-9 - Evaluation of the phytoremediation potential of leguminous trees in soil contaminated with lead (Pb) and their combined use with Stizolobium aterrimum, a forage Pb-tolerant |
| Grantee: | Liliane Santos de Camargos |
| Support Opportunities: | Regular Research Grants |