Gaysina Lira A
Department of Bioecology and Biological Education, M. Akmullah Bashkir State Pedagogical University, 450008 Ufa, Russia.
All-Russian Research Institute of Phytopathology, 143050 Bolshye Vyazemy, Russia.
Plants (Basel). 2024 Jan 25;13(3):357. doi: 10.3390/plants13030357.
Terrestrial algae are a group of photosynthetic organisms that can survive in extreme conditions. pH is one of the most important factors influencing the distribution of algae in both aquatic and terrestrial ecosystems. The impact of different pH levels on the cell volume and other morphological characteristics of authentic and reference strains of , , , , and were studied. , and were the most resistant species, retaining their morphology in the range of pH 4-11.5 and pH 3.5-11, respectively. The change in pH towards acidic and alkaline levels caused an increase in the volume of and cells, according to a polynomial regression model. The volume of cells increased from a low to high pH according to a linear regression model. Changes in pH levels did not have a significant impact on the volume of and cells. Low and high levels of pH caused an increase in oil-containing substances in and cells. Our study revealed a high resistance of the studied species to extreme pH levels, which allows for us to recommend these strains for broader use in biotechnology and conservation studies of natural populations.
陆生藻类是一类能够在极端条件下生存的光合生物。pH值是影响水生和陆生生态系统中藻类分布的最重要因素之一。研究了不同pH水平对真养产碱杆菌、嗜碱假单胞菌、嗜碱芽孢杆菌、嗜碱栖热放线菌和嗜碱栖热放线菌参考菌株的细胞体积及其他形态特征的影响。嗜碱假单胞菌、嗜碱芽孢杆菌和嗜碱栖热放线菌是最具抗性的物种，分别在pH 4 - 11.5和pH 3.5 - 11范围内保持其形态。根据多项式回归模型，pH值向酸性和碱性水平的变化导致嗜碱栖热放线菌和嗜碱栖热放线菌细胞体积增加。根据线性回归模型，嗜碱芽孢杆菌细胞体积随pH值从低到高而增加。pH值的变化对嗜碱假单胞菌和嗜碱栖热放线菌的细胞体积没有显著影响。低pH值和高pH值导致嗜碱栖热放线菌和嗜碱栖热放线菌细胞中含油物质增加。我们的研究表明，所研究的物种对极端pH水平具有高度抗性，这使我们能够推荐这些菌株在生物技术和自然种群保护研究中更广泛地使用。
