OsSAUR2, a small auxin-up RNA gene, is crucial for arsenic tolerance and accumulation in rice

Environmental and Experimental Botany, Journal Year: 2024, Volume and Issue: 226, P. 105894 - 105894

Published: July 17, 2024

Language: Английский

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Recent Advances in Transcriptome Analysis Within the Realm of Low Arsenic Rice Breeding

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 606 - 606

Published: Feb. 17, 2025

Arsenic (As), a toxic element, is widely distributed in soil and irrigation water. Rice (Oryza sativa L.), the staple food Southern China, exhibits greater propensity for As uptake compared to other crops. pollution paddy fields not only impairs rice growth but also poses serious threat security human health. Nevertheless, molecular mechanism underlying response toxicity has been completely revealed until now. Transcriptome analysis represents powerful tool revealing mechanisms conferring phenotype formation employed crop breeding. Consequently, this review focuses on recent advances transcriptome within realm of low breeding rice. It particularly highlights applications identifying genes responsive toxicity, gene interaction regulatory modules analyzing secondary metabolite biosynthesis pathways. Furthermore, tolerance are updated, outcomes summarized. Finally, challenges associated with applying low-As deliberated upon, future research directions envisioned, aim providing references expedite high-yield low-arsenic

Language: Английский

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E3 Ubiquitin Ligase OsRFI2 Regulates Salinity Tolerance by Targeting Ascorbate Peroxidase OsAPX8 for its Degradation in Rice

Rice, Journal Year: 2025, Volume and Issue: 18(1)

Published: March 10, 2025

Salinity is a major abiotic stress that adversely affects rice growth and production. However, the detailed regulatory mechanisms of salt response in remain largely unexplored. In this study, we established RING-type E3 ubiquitin ligase OsRFI2 plays negative role tolerance rice. Knockout mutants (Osrfi2) exhibited high tolerance, whereas OsRFI2-overexpressed transgenic lines (OE-OsRFI2) were more sensitive to stress. has activity interacts with ascorbate peroxidase OsAPX8 chloroplast, catalyzes its ubiquitination degradation through 26 S proteasome pathway. The Osapx8 mutants, like OE-OsRFI2 lines, showed sensitivity concentrations, accumulating greater amounts MDA, H2O2 O2−, which lead compromised cell permeability ROS accumulation. Thus, OsRFI2-OsAPX8 module adds novel clues for better understanding mechanism

Language: Английский

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New nano-ferro-silicon biochar promotes plant growth and grain yield under arsenic stress in rice

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: May 2, 2025

Arsenic (As) is a ubiquitous and toxic metalloid in nature, posing significant risks to living organisms. Developing sustainable strategies mitigate As stress reduce accumulation rice critical for ensuring food safety contaminated regions. Herein, we synthesized new nano-ferro-silicon biochar (NNFB) composed of biochar, γ-Fe 2 O 3 , SiO which effectively adsorbed from aqueous solutions soil. NNFB alleviated toxicity by promoting seeding root growth at the seed germination stages. Under 40 μM As(III) treatment, application 0.25% 0.5% regulated reactive oxygen species (ROS) balance reducing H enhancing peroxidase (POD) activity leaves. Additionally, reduced uptake regulating expression transport genes OsABCC1 OsLsi1 OsLsi2 stage. In pot experiments with mg/kg As(III)-contaminated soil, significantly improved aboveground biomass, tiller number, effective count. Notably, number per plant increased 6.93- 7.93-fold 1% treatments compared control. These findings demonstrate that efficiently adsorbs As, mitigates multiple stages, enhances productivity, offering promising solution As-contaminated agricultural systems.

Language: Английский

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Overexpression of the RAV Transcription Factor OsAAT1 Confers Enhanced Arsenic Tolerance by Modulating Auxin Hemostasis in Rice

Journal of Agricultural and Food Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Characterization of arsenic (As)-responsive genes is fundamental to solving the issue As contamination in rice. Herein, we establish involvement an RAV transcription factor OsAAT1 (

Language: Английский

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OsbHLH6, a basic helix–loop–helix transcription factor, confers arsenic tolerance and root‐to‐shoot translocation in rice

The Plant Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 7, 2024

Arsenic (As) is extremely toxic to plants, posing a serious concern for food safety. Identification of genes responsive As significative figuring out this issue. Here, we identified bHLH transcription factor OsbHLH6 that was involved in mediating the processes tolerance, uptake, and root-to-shoot translocation rice. The expression gene strongly induced after 3 48 h arsenite [As(III)] treatment. OsbHLH6-overexpressed transgenic rice (OE-OsbHLH6) sensitive to, while knockout mutant (Osbhlh6) tolerant As(III) stress by affecting contents reactive oxygen species (ROS) non-protein thiols (NPT), etc. Knockout increased significantly concentration roots, but decreased extensively accumulation shoots, compared OE-OsbHLH6 WT plants. transcripts phytochelatins (PCs) synthetase encoding OsPCS1 OsPCS2, as well transporter OsLsi1 OsABCC1 were greatly abundant Osbhlh6 mutants than plants under stress. In contrast, OsLsi2 suppressed mutants. acted transcriptional activator bind directly promoter regulate OsPrx2 encodes peroxidase precursor. Moreover, overexpression resulted significant change amounts abiotic stress-related genes, which might partially contribute sensitivity These findings may broaden our understanding molecular mechanism OsbHLH6-mediated response provide novel useful stress-resistant breeding.

Language: Английский

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Influence of freeze-thaw process on As migration and microorganisms in aggregates of paddy soil

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 370, P. 122847 - 122847

Published: Oct. 11, 2024

Language: Английский

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