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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of silicon on aluminum toxicity in upland rice plants

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Author(s):
de Freitas, Lucas Barbosa [1] ; Fernandes, Dirceu Maximino [2] ; Mendonca Maia, Suelen Cristina [3] ; Fernandes, Adalton Mazetti [4]
Total Authors: 4
Affiliation:
[1] Fac La Salle, Univ Ave, 1000 W, BR-78455000 Lucas Rio Do Verde - Brazil
[2] Sao Paulo State Univ UNESP, Dept Soil & Environm Resources, Coll Agr Sci, Jose Barbosa Barros St 1780, BR-18610307 Botucatu, SP - Brazil
[3] Goiano Fed Inst IF Goiano, Adv Campus Cristalina, Araguaia St, POB 166, BR-73850000 Cristalina - Brazil
[4] Sao Paulo StateUnivers UNESP, Ctr Trop Roots & Starches, Jose Barbosa Barros St 1780, BR-17801861 Botucatu, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: PLANT AND SOIL; v. 420, n. 1-2, p. 263-275, NOV 2017.
Web of Science Citations: 5
Abstract

This study aimed to determine the capacity of Si to mitigate Al toxicity in upland rice plants (Oryza sativa L.) by evaluating plant growth and the Si and Al uptake kinetics. Plants were grown for 40 days, after which the Si and Al uptake kinetics (Cmin, Km and Imax) were analyzed. Then, the shoots and roots were separated, and the dry matter, root morphology and Si and Al concentration and accumulation in the plant were evaluated. Aluminum decreased plant growth and the Si uptake capacity by decreasing the root growth and Si transport system efficiency in the upland rice roots (> Km and > Cmin). Silicon mitigated Al toxicity in the upland rice plants by decreasing Al transport to the plant shoots, although it did not reduce the Al uptake rate (Imax). Si treatment increased the growth of upland rice plant shoots grown in the presence of Al without influencing the root growth. The alleviation of Al toxicity by Si is more evident in the susceptible upland rice cultivar Maravilha. Silicon mitigated Al toxicity in the upland rice plants by decreasing Al transport to the plant shoots but did not reduce the Al uptake rate by roots. (AU)

FAPESP's process: 11/09283-0 - INTERACTION SILICON AND ALUMINUM IN UPLAND RICE AND CASTOR OIL PLANT
Grantee:Lucas Barbosa de Freitas
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 11/22182-8 - Interaction silicon and aluminum in upland rice and castor oil plant
Grantee:Dirceu Maximino Fernandes
Support Opportunities: Regular Research Grants