Yadav Priya, Singh Rahul Prasad, Hashem Abeer, Abd Allah Elsayed Fathi, Santoyo Gustavo, Kumar Ajay, Gupta Rajan Kumar
Laboratory of Algal Research, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
Microorganisms. 2023 Oct 7;11(10):2507. doi: 10.3390/microorganisms11102507.
In recent years, there has been a burgeoning interest in the utilization of cyanobacteria for the purpose of land rehabilitation via enhancements in soil fertility, prevent erosion, and counter desertification. This study evaluated the ability of BOT1, sp. BOT2, and their consortia to form biocrusts on the substrate of coarse sand, fine sand, and loamy soil. A nutrient- and water-deficient substrate was inoculated with cyanobacteria to facilitate biocrust formation and evaluate their impact on agriculture. Cyanobacteria inoculation resulted in significant improvements in soil fertility, especially in coarse and fine sand, which initially had the lowest fertility. The findings of this investigation underscore that the consortium of cyanobacteria exhibited greater efficacy than individual strains in enhancing soil fertility and stimulating plant growth. The loamy soil treated with the consortium had the highest plant growth across all soil types, in contrast to the individual strains. The consortium of cyanobacteria showed promising results in promoting biocrust formation and fostering rice seedling growth in fine sand. This study provides empirical evidence supporting the potential utility of cyanobacterial consortia as a valuable tool for the rehabilitation of degraded land. Furthermore, the results indicate that cyanobacterial species can persist in soil environments even following prolonged periods of desiccation.
近年来，人们对利用蓝细菌通过提高土壤肥力、防止侵蚀和对抗沙漠化来进行土地复垦的兴趣日益浓厚。本研究评估了BOT1菌株、BOT2菌株及其联合体在粗砂、细砂和壤土基质上形成生物结皮的能力。用缺乏养分和水分的基质接种蓝细菌，以促进生物结皮的形成并评估它们对农业的影响。接种蓝细菌显著提高了土壤肥力，尤其是在最初肥力最低的粗砂和细砂中。本研究结果强调，在提高土壤肥力和促进植物生长方面，蓝细菌联合体比单个菌株表现出更高的功效。与单个菌株相比，用联合体处理的壤土在所有土壤类型中植物生长最好。蓝细菌联合体在促进细砂中生物结皮的形成和促进水稻幼苗生长方面显示出有希望的结果。本研究提供了实证证据，支持蓝细菌联合体作为一种有价值的工具用于退化土地复垦的潜在效用。此外，结果表明，即使经过长时间干燥，蓝细菌物种仍能在土壤环境中存活。
