Iron phytostabilization by Leucaena leucocephala

Autor(es)

Pires Bomfim, Nayane Cristina ^[1] ; Aguilar, Jailson Vieira ^[1] ; de Paiva, Wesller da Silva ^[1] ; de Souza, Lucas Anjos ^[2] ; Justino, Gilberto Costa ^{[3, 4]} ; Faria, Glaucia Amorim ^[5] ; Camargos, Liliane Santos ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, Dept Biol & Zootechny, Sch Engn, Ilha Solteira Plant Metab Physiol Lab, Rua Moncao 226, BR-15385000 Sao Paulo - Brazil

^[2] Inst Fed Goiano, Campus Rio Verde, Rio Verde, GO - Brazil

^[3] Fed Univ Alagoas State UFAL, Ave Lourival Melo Mota S-N, BR-57072900 Maceio, AL - Brazil

^[4] Hlth Sci Inst, Bot Setor, Ave Lourival Melo Mota S-N, BR-57072900 Maceio, AL - Brazil

^[5] Sao Paulo State Univ Unesp, Math Dept, Sch Engn, Av Brazil Sul, BR-15385000 Ilha Solteira, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SOUTH AFRICAN JOURNAL OF BOTANY; v. 138, p. 318-327, MAY 2021.
• Citações Web of Science: 1

Resumo

This study investigated the potential for tolerance, absorption, and translocation of iron (Fe) by Leucaena leucocephala, as well as the response of the photosynthetic mechanism and the phytoremediation potential of L. leucocephala grown in soil with concentrations of Fe (0, 100, 200, 300, 400, and 500 mg Fe/dm(3) of soil). The chlorophyll content and the photosynthetic apparatus showed a significant difference between treatments: the chlorophyll content, transpiration rate, and stomatal conductance were higher in the treatment 200 mg Fe/dm(3) of soil, while the photosynthetic rate was higher in the treatment 500 mg Fe/dm(3) of soil in relation to the control. From 300 mg Fe/dm(3) of soil onward, there was a significant reduction in the number of leaves, mass, and biomass of L. leucocephala. The species is tolerant to the Fe doses analyzed. Availability of Fe in the soil after the cultivation of L. leucocephala decreased, evidencing the plant capacity of Fe absorption, which accumulated mostly in the roots, and only % of Fe was translocated to the shoots. The highest Fe accumulation per biomass was 9.48 mg, at 200 mg Fe/dm(3) of soil. The amount of Fe translocated and accumulated in L. leucocephala is directly related to its biomass production thus the dose 200 mg Fe/dm(3) of soil allows the best performance of phytoremediation potential. Although plant growth is affected by treatments of 300, 400 and 500 mg Fe/dm(3) of soil and Fe accumulation is less, L. leucocephala is able to tolerate and phytostabilize soil Fe with potential for use in phytoremediation, mainly because it is a kind of phytostabilization of Fe. (C) 2021 SAAB. Published by Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 18/01498-6 - Avaliação do potencial fitorremediador de leguminosas tropicais em solos contaminados com cobre, boro e manganês
• Beneficiário: Liliane Santos de Camargos
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/13008-3 - Crescimento, tolerância e potencial fitorremediador de Leucaena leucocephala em solos contaminados por cobre e ferro
• Beneficiário: Nayane Cristina Pires Bomfim
• Modalidade de apoio: Bolsas no Brasil - Mestrado