Root-exuded specialized metabolites reduce arsenic toxicity in maize
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.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:121 |
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| Enthalten in: |
Proceedings of the National Academy of Sciences of the United States of America - 121(2024), 13 vom: 26. März, Seite e2314261121 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Caggìa, Veronica [VerfasserIn] |
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| Links: |
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| Themen: |
Arsenic |
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| Anmerkungen: |
Date Completed 25.03.2024 Date Revised 05.04.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1073/pnas.2314261121 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM370026748 |
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| 520 | |a 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 | ||
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| 700 | 1 | |a Wälchli, Jan |e verfasserin |4 aut | |
| 700 | 1 | |a Deslandes-Hérold, Gabriel |e verfasserin |4 aut | |
| 700 | 1 | |a Mateo, Pierre |e verfasserin |4 aut | |
| 700 | 1 | |a Robert, Christelle A M |e verfasserin |4 aut | |
| 700 | 1 | |a Guan, Hang |e verfasserin |4 aut | |
| 700 | 1 | |a Bigalke, Moritz |e verfasserin |4 aut | |
| 700 | 1 | |a Spielvogel, Sandra |e verfasserin |4 aut | |
| 700 | 1 | |a Mestrot, Adrien |e verfasserin |4 aut | |
| 700 | 1 | |a Schlaeppi, Klaus |e verfasserin |4 aut | |
| 700 | 1 | |a Erb, Matthias |e verfasserin |4 aut | |
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