Caggìa, Veronica; Wälchli, Jan; Deslandes-Hérold, Gabriel; Mateo, Pierre; Robert, Christelle A M; Guan, Hang; Bigalke, Moritz; Spielvogel, Sandra; Mestrot, Adrien; Schlaeppi, Klaus; Erb, Matthias (2024). Root-exuded specialized metabolites reduce arsenic toxicity in maize. Proceedings of the National Academy of Sciences of the United States of America - PNAS, 121(13) National Academy of Sciences 10.1073/pnas.2314261121
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cagg_a-et-al-2024-root-exuded-specialized-metabolites-reduce-arsenic-toxicity-in-maize.pdf - Published Version Available under License Creative Commons: Attribution-Noncommercial-No Derivative Works (CC-BY-NC-ND). Download (2MB) | Preview |
By releasing specialized metabolites, plants modify their environment. Whether and how specialized metabolites protect plants against toxic levels of trace elements is not well understood. We evaluated whether benzoxazinoids, which are released into the soil by major cereals, can confer protection against arsenic toxicity. Benzoxazinoid-producing maize plants performed better in arsenic-contaminated soils than benzoxazinoid-deficient mutants in the greenhouse and the field. Adding benzoxazinoids to the soil restored the protective effect, and the effect persisted to the next crop generation via positive plant-soil feedback. Arsenate levels in the soil and total arsenic levels in the roots were lower in the presence of benzoxazinoids. Thus, the protective effect of benzoxazinoids is likely soil-mediated and includes changes in soil arsenic speciation and root accumulation. We conclude that exuded specialized metabolites can enhance protection against toxic trace elements via soil-mediated processes and may thereby stabilize crop productivity in polluted agroecosystems.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) 08 Faculty of Science > Institute of Geography |
UniBE Contributor: |
Caggìa, Veronica Lucia Luigina, Deslandes, Gabriel, Mateo, Pierre, Robert, Christelle Aurélie Maud, Guan, Hang, Bigalke, Moritz, Schläppi, Klaus Bernhard, Erb, Matthias |
Subjects: |
500 Science > 580 Plants (Botany) 900 History > 910 Geography & travel 000 Computer science, knowledge & systems 500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry |
ISSN: |
1091-6490 |
Publisher: |
National Academy of Sciences |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
25 Mar 2024 14:14 |
Last Modified: |
26 Mar 2024 14:41 |
Publisher DOI: |
10.1073/pnas.2314261121 |
PubMed ID: |
38513094 |
Uncontrolled Keywords: |
W22 wild-type arsenic arsenic tolerance bx1 mutant secondary metabolites |
BORIS DOI: |
10.48350/194629 |
URI: |
https://boris.unibe.ch/id/eprint/194629 |
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