Chen Yaping, Li Qiang, Wu Wendou, Liu Xiaohui, Cheng Jie, Deng Xiujuan, Cai Xiaobo, Yuan Wenxia, Xie Jin, Zhang Shihao, Wang Baijuan
College of Tea Science, Yunnan Agricultural University, Kunming, China.
College of Plant Protection, Yunnan Agricultural University, Kunming, China.
Front Microbiol. 2022 May 23;13:911226. doi: 10.3389/fmicb.2022.911226. eCollection 2022.
Lightning rods have been developed to prevent damage caused by lightning to organisms. However, the biological effect of the current transmitted into the soil through lightning rods is unknown. In this study, we analyzed the effects of lightning on soil properties, the microbial community, and the active components of Pu-erh tea ( var. ) near lightning rods. The results showed that the contents of organic matter and available potassium, copper, and calcium in rhizosphere soil near the lightning rod were significantly higher than those in control soil ( < 0.05), while the contents of total potassium, phosphorus, iron, magnesium, and aluminum decreased. Lightning significantly increased the bacterial diversity of Pu-erh rhizosphere soil compared to control soil samples ( < 0.05). , and were significantly enriched in soil samples near the lightning rod compared to soil samples far from the lightning rod. Clusters of Orthologous Groups (COG) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses indicated that adenosine/AMP kinase, chitodextrinase, flavorubredoxin, nucleotide metabolism, and carbohydrate digestion and absorption were significantly enriched in the rhizosphere soil samples near the lightning rod compared to the control samples ( < 0.05). β diversity analysis indicated the grounding of the lightning rod contributed to the community differentiation of rhizosphere bacteria. Amino acids, polyphenols, and soluble sugar increased in Pu-erh tea near the lightning rod, while the contents of catechin and anthocyanin decreased in Pu-erh tea near the lightning rod compared with the control sample ( < 0.05). Significant correlations were found among microbial indicators, soil properties, and Pu 'er tea components. This study serves as the first report on the effects of lightning rods on soil properties, microecology, and plant metabolism, which promotes the understanding of the biological effects of lightning, and provides a reference for the rational use of lightning resources.
避雷针已被开发用于防止闪电对生物体造成损害。然而，通过避雷针传入土壤的电流的生物效应尚不清楚。在本研究中，我们分析了闪电对避雷针附近土壤性质、微生物群落和普洱茶（品种）活性成分的影响。结果表明，避雷针附近根际土壤中有机质、有效钾、铜和钙的含量显著高于对照土壤（P<0.05），而全钾、磷、铁、镁和铝的含量则下降。与对照土壤样品相比，闪电显著增加了普洱茶根际土壤的细菌多样性（P<0.05）。与远离避雷针的土壤样品相比，[具体物种名称未给出]、[具体物种名称未给出]和[具体物种名称未给出]在避雷针附近的土壤样品中显著富集。直系同源簇（COG）和京都基因与基因组百科全书（KEGG）分析表明，与对照样品相比，避雷针附近根际土壤样品中腺苷/AMP激酶、几丁质糊精酶、黄素氧还蛋白、核苷酸代谢以及碳水化合物消化和吸收显著富集（P<0.05）。β多样性分析表明，避雷针接地有助于根际细菌群落分化。避雷针附近的普洱茶中氨基酸、多酚和可溶性糖增加，而与对照样品相比，避雷针附近的普洱茶中儿茶素和花青素含量下降（P<0.05）。在微生物指标、土壤性质和普洱茶成分之间发现了显著相关性。本研究首次报道了避雷针对土壤性质、微生态和植物代谢的影响，有助于理解闪电的生物效应，并为合理利用闪电资源提供参考。
