Southwest University of Science and Technology

About: Southwest University of Science and Technology is a education organization based out in Mianyang, China. It is known for research contribution in the topics: Adsorption & Graphene. The organization has 10017 authors who have published 8923 publications receiving 94850 citations. The organization is also known as: Xīnán Kējìdàxué.

Tomato UV-B receptor SlUVR8 mediates plant acclimation to UV-B radiation and enhances fruit chloroplast development via regulating SlGLK2.

Abstract: Plants utilize energy from sunlight to perform photosynthesis in chloroplast, an organelle that could be damaged by solar UV radiation. The ultraviolet-B (UV-B) photoreceptor UVR8 is required for UV-B perception and signal transduction. However, little is known about how UVR8 influence chloroplast development under UV-B radiation. Here, we characterized tomato UVR8 gene (SlUVR8) and our results indicated that SlUVR8 facilitate plant acclimation to UV-B stress by orchestrating expression of the UVB-responsive genes (HY5 and CHS) and accumulating UV-absorptive compounds. In addition, we also discovered that SlUVR8 promotes fruit chloroplast development through enhancing accumulation of transcription factor GOLDEN2-LIKE2 (SlGLK2) which determines chloroplast and chlorophyll levels. Furthermore, UV-B radiation could increase expression of SlGLK2 and its target genes in fruits and leaves. SlUVR8 is required for UVB-induced SlGLK2 expression. Together, our work not only identified the conserved functions of SlUVR8 gene in response to UV-B stress, but also uncovered a novel role that SlUVR8 could boost chloroplast development by accumulating SlGLK2 proteins.

Cooperativity by Multi-Metals Confined in Supertetrahedral Sulfide Nanoclusters To Enhance Electrocatalytic Hydrogen Evolution

Abstract: Few multi-metal-based systems were created to probe the regulation mechanism in electrocatalytic reactions. Herein, we select supertetrahedral metal sulfide nanoclusters (MSNCs) with preconfined and precisely positioned multi-metal ions as a structure model and have successfully developed MSNC-based electrocatalysts. Unprecedentedly, those new materials based on M–Ga–Sn–S NCs (M = Mn, Co, and Zn) show the synergistic effect of multi-metal ions on hydrogen evolution reaction (HER) via experiments and density functional theory (DFT) calculations. Among various multi-metal possibilities studied here, the most efficient one is that codoped with Mn, Co, and Zn, and it achieves a low overpotential of 176 mV at 10 mA cm–2 and a small Tafel slope of 43 mV dec–1. Such unique model system allows for systematic investigation of catalytic activities of low-coordinated sulfur ions in well-defined chemical environment and could have long-lasting and fundamental impacts on creating new types of chalcogenide-based electr...