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Kanda Y, Shinya T, Maeda S, Mujiono K, Hojo Y, Tomita K, Okada K, Kamakura T, Galis I, Mori M. BSR1, a Rice Receptor-like Cytoplasmic Kinase, Positively Regulates Defense Responses to Herbivory. Int J Mol Sci 2023; 24:10395. [PMID: 37373546 DOI: 10.3390/ijms241210395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/16/2023] [Accepted: 06/17/2023] [Indexed: 06/29/2023] Open
Abstract
Crops experience herbivory by arthropods and microbial infections. In the interaction between plants and chewing herbivores, lepidopteran larval oral secretions (OS) and plant-derived damage-associated molecular patterns (DAMPs) trigger plant defense responses. However, the mechanisms underlying anti-herbivore defense, especially in monocots, have not been elucidated. The receptor-like cytoplasmic kinase Broad-Spectrum Resistance 1 (BSR1) of Oryza sativa L. (rice) mediates cytoplasmic defense signaling in response to microbial pathogens and enhances disease resistance when overexpressed. Here, we investigated whether BSR1 contributes to anti-herbivore defense responses. BSR1 knockout suppressed rice responses triggered by OS from the chewing herbivore Mythimna loreyi Duponchel (Lepidoptera: Noctuidae) and peptidic DAMPs OsPeps, including the activation of genes required for biosynthesis of diterpenoid phytoalexins (DPs). BSR1-overexpressing rice plants exhibited hyperactivation of DP accumulation and ethylene signaling after treatment with simulated herbivory and acquired enhanced resistance to larval feeding. As the biological significance of herbivory-induced accumulation of rice DPs remains unexplained, their physiological activities in M. loreyi were analyzed. The addition of momilactone B, a rice DP, to the artificial diet suppressed the growth of M. loreyi larvae. Altogether, this study revealed that BSR1 and herbivory-induced rice DPs are involved in the defense against chewing insects, in addition to pathogens.
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Affiliation(s)
- Yasukazu Kanda
- Institute of Agrobiological Sciences, NARO (NIAS), Tsukuba 305-8634, Japan
- Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science, Noda 278-8510, Japan
| | - Tomonori Shinya
- Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan
| | - Satoru Maeda
- Institute of Agrobiological Sciences, NARO (NIAS), Tsukuba 305-8634, Japan
| | - Kadis Mujiono
- Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan
- Faculty of Agriculture, Mulawarman University, Samarinda 75119, Indonesia
| | - Yuko Hojo
- Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan
| | - Keisuke Tomita
- Agro-Biotechnology Research Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Kazunori Okada
- Agro-Biotechnology Research Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Takashi Kamakura
- Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science, Noda 278-8510, Japan
| | - Ivan Galis
- Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan
| | - Masaki Mori
- Institute of Agrobiological Sciences, NARO (NIAS), Tsukuba 305-8634, Japan
- Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science, Noda 278-8510, Japan
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Knoch E, Kovács J, Deiber S, Tomita K, Shanmuganathan R, Serra Serra N, Okada K, Becker C, Schandry N. Transcriptional response of a target plant to benzoxazinoid and diterpene allelochemicals highlights commonalities in detoxification. BMC PLANT BIOLOGY 2022; 22:402. [PMID: 35974304 PMCID: PMC9382751 DOI: 10.1186/s12870-022-03780-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 07/28/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Plants growing in proximity to other plants are exposed to a variety of metabolites that these neighbors release into the environment. Some species produce allelochemicals to inhibit growth of neighboring plants, which in turn have evolved ways to detoxify these compounds. RESULTS In order to understand how the allelochemical-receiving target plants respond to chemically diverse compounds, we performed whole-genome transcriptome analysis of Arabidopsis thaliana exposed to either the benzoxazinoid derivative 2-amino- 3H-phenoxazin-3-one (APO) or momilactone B. These two allelochemicals belong to two very different compound classes, benzoxazinoids and diterpenes, respectively, produced by different Poaceae crop species. CONCLUSIONS Despite their distinct chemical nature, we observed similar molecular responses of A. thaliana to these allelochemicals. In particular, many of the same or closely related genes belonging to the three-phase detoxification pathway were upregulated in both treatments. Further, we observed an overlap between genes upregulated by allelochemicals and those involved in herbicide detoxification. Our findings highlight the overlap in the transcriptional response of a target plant to natural and synthetic phytotoxic compounds and illustrate how herbicide resistance could arise via pathways involved in plant-plant interaction.
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Affiliation(s)
- Eva Knoch
- LMU Biocenter, Faculty of Biology, Ludwig-Maximilians-University Munich, 82152, Martinsried, Germany
- Gregor Mendel Institute of Molecular Plant Biology GmbH, Austrian Academy of Sciences, Vienna BioCenter (VBC), 1030, Vienna, Austria
| | - Judit Kovács
- Gregor Mendel Institute of Molecular Plant Biology GmbH, Austrian Academy of Sciences, Vienna BioCenter (VBC), 1030, Vienna, Austria
| | - Sebastian Deiber
- Gregor Mendel Institute of Molecular Plant Biology GmbH, Austrian Academy of Sciences, Vienna BioCenter (VBC), 1030, Vienna, Austria
| | - Keisuke Tomita
- Agro-Biotechnology Research Center (AgTECH), Graduate School of Agricultural and Life Sciences (GSALS), The University of Tokyo, Tokyo, 113-8657, Japan
| | - Reshi Shanmuganathan
- LMU Biocenter, Faculty of Biology, Ludwig-Maximilians-University Munich, 82152, Martinsried, Germany
- Gregor Mendel Institute of Molecular Plant Biology GmbH, Austrian Academy of Sciences, Vienna BioCenter (VBC), 1030, Vienna, Austria
| | - Núria Serra Serra
- Gregor Mendel Institute of Molecular Plant Biology GmbH, Austrian Academy of Sciences, Vienna BioCenter (VBC), 1030, Vienna, Austria
| | - Kazunori Okada
- Agro-Biotechnology Research Center (AgTECH), Graduate School of Agricultural and Life Sciences (GSALS), The University of Tokyo, Tokyo, 113-8657, Japan
| | - Claude Becker
- LMU Biocenter, Faculty of Biology, Ludwig-Maximilians-University Munich, 82152, Martinsried, Germany.
- Gregor Mendel Institute of Molecular Plant Biology GmbH, Austrian Academy of Sciences, Vienna BioCenter (VBC), 1030, Vienna, Austria.
| | - Niklas Schandry
- LMU Biocenter, Faculty of Biology, Ludwig-Maximilians-University Munich, 82152, Martinsried, Germany.
- Gregor Mendel Institute of Molecular Plant Biology GmbH, Austrian Academy of Sciences, Vienna BioCenter (VBC), 1030, Vienna, Austria.
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