Physiological and transcriptomic study reveal SeNPs-mediated AsIII stress detoxification mechanisms involved modulation of antioxidants, metal transporters, and transcription factors in Glycine max L. (Merr.) roots
文献类型: 外文期刊
第一作者: Zeeshan, Muhammad
作者: Zeeshan, Muhammad;Hu, Yu Xin;Sun, Chen Yu;Ahmad, Shakeel;Muhammad, Ihsan;Nasar, Jamal;Jahan, Mohammad Shah;Zhou, Xun Bo;Zeeshan, Muhammad;Zeeshan, Muhammad;Guo, Xiao Hong;Salam, Abdul;Fahad, Shah
作者机构:
关键词: RNA-Seq; Soybean; Nano-selenium; Arsenite stress; Genome-wide expression
期刊名称:ENVIRONMENTAL POLLUTION ( 影响因子:8.9; 五年影响因子:9.5 )
ISSN: 0269-7491
年卷期: 2023 年 317 卷
页码:
收录情况: SCI
摘要: Physiological changes and genome-wide alteration in gene expression were performed in soybean (Glycine max [L.] Merr.) roots exposed to AsIII (25 mu mol/L) alone and supplemented with selenium nanoparticles (SeNPs) at the concentration of 10 and 25 mu mol/L at the V2 growth stage. Excessive arsenic in the root zone poses a potential threat to soybean yield, particularly to roots, due to the limited translocation of AsIII from root to shoot in the case of soybean. We hypothesized that SeNPs can relieve AsIII toxicity to soybean root by reducing the AsIII uptake and regulating the internal tolerance mechanism of the plants. Results accomplished that SeNPs had positive impact on soybean dry weight and roots parameters under AsIII stress. Then, we further evaluated physiological indexes, whole genome transcriptomic analysis and quantitative real-time PCR to elucidate the underlying mechanism of AsIII tolerance under SeNPs supplementation. Under the condition of AsIII-stress, SeNPs exposure significantly reduced the electrolyte leakage, O-2(-center dot), H2O2 and MDA accumulation while increasing the antioxidants level. The RNA-seq dataset revealed total of 5819 up and 7231 down expressed DEGs across all libraries. The number of exclusively regulated genes were higher under As + SeNP10 (4909) treatment than in the AsIII-alone (4830) and As + SeNP25 (3311) treatments. The KEGG and GO analyses revealed that stress responsive DEGs such as glutathione S-transferase, glutathione peroxidase, ascorbate, glutaredoxin, thioredoxin, and phytochelatins synthase are responsible for AsIII tolerance under the SeNPs supplementation. Similarly, sulfate transporter, and ABC transporters (ATP-binding cassettes) expression were induced, and aquaporin channels related DEGs expression were reduced under SeNPs application in AsIII exposure condition. Furthermore, the expression of molecular chaperones (HSP) and transcription factors (MYB, bZIP, bHLH, and HSFs) were increased in SeNPs treatment groups. These results provide vital information of AsIII tolerance mechanism in response to SeNPs in soybean. We suggest that functional characterization of these genes will help us learn more about the SeNPs responsive arsenic tolerance mechanism in soybean.
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