ArticleBMC plant biology2024
Glutathione S-transferase activity facilitates rice tolerance to the barnyard grass root exudate DIMBOA.
Article in BMC plant biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 5 citations in OpenAlex.
- Herbicide Application Under Co-Cultivation Is Associated with Early Microbiome Assembly Shifts and Later Physiological Decline in Rice.Microorganisms · 2026Article
- Characterization of resistance to bacterial panicle blight in rice revealed by transcriptome and QTL mapping analyses.Frontiers in plant science · 2026Article
- Herbicidal Control Potential of the Endophytic BacteriumMicroorganisms · 2025Article
- The role of pangenomics in orphan crop improvement.Nature communications · 2025Review
- Biotechnological frontiers in harnessing allelopathy for sustainable crop production.Functional & integrative genomics · 2024Review
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundIn paddy fields, the noxious weed barnyard grass secretes 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one (DIMBOA) to interfere with rice growth. Rice is unable to synthesize DIMBOA. Rice cultivars with high or low levels of allelopathy may respond differently to DIMBOA.
resultsIn this study, we found that low concentrations of DIMBOA (≤ 0.06 mM) promoted seedling growth in allelopathic rice PI312777, while DIMBOA (≤ 0.08 mM) had no significant influence on the nonallelopathic rice Lemont. DIMBOA treatment caused changes in the expression of a large number of glutathione S-transferase (GST) proteins, which resulting in enrichment of the glutathione metabolic pathway. This pathway facilitates plant detoxification of heterologous substances. The basal levels of GST activity in Lemont were significantly higher than those in PI312777, while GST activity in PI312777 was slightly induced by increasing DIMBOA concentrations. Overexpression of GST genes (Os09g0367700 and Os01g0949800) in these two cultivars enhanced rice resistance to DIMBOA.
conclusionsTaken together, our results indicated that different rice accessions with different levels of allelopathy have variable tolerance to DIMBOA. Lemont had higher GST activity, which helped it tolerate DIMBOA, while PI312777 had lower GST activity that was more inducible. The enhancement of GST expression facilitates rice tolerance to DIMBOA toxins from barnyard grass root exudates.
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