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Unveiling the role of OsSAP17: Enhancing plant resistance to drought and salt.
Plant Physiol Biochem
December 2024
College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China; Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Monitoring for Heavy Metal Pollutants, Ministry of Ecology and Environment, Hunan, 410019, China. Electronic address:
With the intensification of climate change coupled with the inadequate agricultural management in certain regions, plants face numerous challenges due to various abiotic stresses. Stress associated proteins (SAPs) are essential functional genes in plants for coping with stress. This research provides a functional analysis of OsSAP17, a protein belonging to the SAP family in rice.
View Article and Find Full Text PDFRegioselective 1,4-Addition of P(O)-H Species to In SituFormed 1-Benzopyrylium Ion from C3-Substituted 2-Chromene Hemiketals to Construct C3-Functionalized C4-Phosphorylated 4-Chromenes.
J Org Chem
January 2025
Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, 2025 Chengluo Avenue, Chengdu 610016, P.R. China.
Herein, we report the first example that P(O)-H species including -phosphonates and -phosphine oxides could participate in a highly regioselective 1,4-addition to in situ generated 1-benzopyrylium ion from C3-substituted 2-chromene hemiketals, which provides a brand-new and effective approach for the synthesis of C4-phosphorylated 4-chromenes with diverse C3-functionality (ketone, ester, sulfonyl, aryl, and alkyl groups). In total, the reaction features the use of inexpensive Zn(ClO)·6HO as a catalyst, low catalyst loading (only 5 mol %), mild reaction conditions (60 °C, 10 min to 24 h), and broad substrate scope (46 examples) as well as good to high yields (>90% yield on average). More importantly, mechanistic experiments demonstrated the essential role of the C3-substituent on 2-chromene hemiketals in stabilizing the in situ generated 1-benzopyrylium ion and the regioselective 1,4-addition control.
View Article and Find Full Text PDFDissecting the Genetic Basis of Preharvest Sprouting in Rice Using a Genome-Wide Association Study.
J Agric Food Chem
January 2025
Collaborative Innovation Center of Regional Modern Agriculture and Environment Protection Co-constructed By the Province and Ministry, Huaiyin Normal University, Huai'an 223300, China.
Preharvest sprouting (PHS) is an unfavorable trait in cereal crops that significantly reduces grain yield and quality. However, the regulatory mechanisms underlying this complex trait are still largely unknown. Here, 276 rice accessions from the 3000 Rice Genomes Project were used to perform a genome-wide association study.
View Article and Find Full Text PDFSuperconductor-Insulator Transition Induced by Precise Subtripled Vapor Chemical Gating.
J Am Chem Soc
January 2025
State Key Laboratory of Precision and Intelligent Chemistry, CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
Recent progress in superconductor-insulator transition has shed light on the intermediate metallic state with unique electronic inhomogeneity. The microscopic model, suggesting that carrier spatial distribution plays a decisive role in the intermediate state, has been instrumental in understanding the quantum transition. However, the narrow carrier density window in which the intermediate state exists necessitates precise control of the gate dielectric layer, presenting a challenge to in situ map the carrier spatial distribution.
View Article and Find Full Text PDFAmphibian-Derived Peptides as Natural Inhibitors of SARS-CoV-2 Main Protease (Mpro): A Combined In Vitro and In Silico Approach.
Chem Biodivers
January 2025
Universidad Nacional del Litoral Facultad de Bioquimica y Ciencias Biologicas, Química Orgánica, Ciudad Universitaria. Paraje el Pozo S/N, Argentina, 3000, Santa Fe, ARGENTINA.
The COVID-19 pandemic, caused by the SARS-CoV-2 virus, has highlighted the urgent need for novel therapeutic agents targeting viral enzymes such as the main protease (Mpro), which plays a crucial role in viral replication. In this study, we investigate the inhibitory potential of 23 peptides isolated from the skin of amphibians belonging to the Hylidae and Leptodactylidae families against SARS-CoV-2 Mpro. Five peptides demonstrated significant inhibition using a colorimetric Mpro inhibition assay, with IC50 values ranging from 41 to 203 µM.
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