Root-derived long-distance signals trigger ABA synthesis and enhance drought resistance in Arabidopsis
Copyright © 2024. Published by Elsevier Ltd..
Vascular plants have evolved intricate long-distance signaling mechanisms to cope with environmental stress, with reactive oxygen species (ROS) emerging as pivotal systemic signals in plant stress responses. However, the exact role of ROS as root-to-shoot signals in the drought response has not been determined. In this study, we reveal that compared with wild-type plants, ferric reductase defective 3 (frd3) mutants exhibit enhanced drought resistance concomitant with elevated NCED3 transcript levels and ABA contents in leaves as well as increased hydrogen peroxide (H2O2) levels in roots and leaves. Grafting experiments distinctly illustrate that drought resistance can be conferred by the frd3 rootstock regardless of the scion genotype, indicating that long-distance signals originating from frd3 roots promote an increase in ABA levels in leaves. Intriguingly, the drought resistance conferred by the frd3 mutant rootstock is weakened by the CAT2-overexpressing scion, suggesting that H2O2 may be involved in the long-distance signaling. Moreover, the results of comparative transcriptome and proteome analyses support the drought resistance phenotype of the frd3 mutant. Taken together, our findings substantiate the notion that frd3 root-derived long-distance signals trigger ABA synthesis in leaves and enhance drought resistance, providing new evidence for root-to-shoot long-distance signaling in the drought response of plants.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2024 |
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| Enthalten in: |
Journal of genetics and genomics = Yi chuan xue bao - (2024) vom: 28. März |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liu, Qian-Qian [VerfasserIn] |
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| Links: |
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| Themen: |
ABA |
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| Anmerkungen: |
Date Revised 30.03.2024 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1016/j.jgg.2024.03.007 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM370442970 |
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| 245 | 1 | 0 | |a Root-derived long-distance signals trigger ABA synthesis and enhance drought resistance in Arabidopsis |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status Publisher | ||
| 520 | |a Copyright © 2024. Published by Elsevier Ltd. | ||
| 520 | |a Vascular plants have evolved intricate long-distance signaling mechanisms to cope with environmental stress, with reactive oxygen species (ROS) emerging as pivotal systemic signals in plant stress responses. However, the exact role of ROS as root-to-shoot signals in the drought response has not been determined. In this study, we reveal that compared with wild-type plants, ferric reductase defective 3 (frd3) mutants exhibit enhanced drought resistance concomitant with elevated NCED3 transcript levels and ABA contents in leaves as well as increased hydrogen peroxide (H2O2) levels in roots and leaves. Grafting experiments distinctly illustrate that drought resistance can be conferred by the frd3 rootstock regardless of the scion genotype, indicating that long-distance signals originating from frd3 roots promote an increase in ABA levels in leaves. Intriguingly, the drought resistance conferred by the frd3 mutant rootstock is weakened by the CAT2-overexpressing scion, suggesting that H2O2 may be involved in the long-distance signaling. Moreover, the results of comparative transcriptome and proteome analyses support the drought resistance phenotype of the frd3 mutant. Taken together, our findings substantiate the notion that frd3 root-derived long-distance signals trigger ABA synthesis in leaves and enhance drought resistance, providing new evidence for root-to-shoot long-distance signaling in the drought response of plants | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a ABA | |
| 650 | 4 | |a H(2)O(2) | |
| 650 | 4 | |a drought resistance | |
| 650 | 4 | |a frd3 | |
| 650 | 4 | |a iron | |
| 650 | 4 | |a reactive oxygen species (ROS) | |
| 650 | 4 | |a root-to-shoot long-distance signals | |
| 700 | 1 | |a Xia, Jin-Qiu |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Jie |e verfasserin |4 aut | |
| 700 | 1 | |a Han, Yi |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Gui-Quan |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Ping-Xia |e verfasserin |4 aut | |
| 700 | 1 | |a Xiang, Cheng-Bin |e verfasserin |4 aut | |
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