Liang Sheng-Min, Zheng Feng-Ling, Fathi Abd Allah Elsayed, Muthuramalingam Pandiyan, Wu Qiang-Sheng, Hashem Abeer
Ministry of Education, Engineering Research Center of Ecology and Agricultural Use of Wetland, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei 434025, China.
Plant Production Department, Faculty of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia.
Saudi J Biol Sci. 2021 Nov;28(11):6495-6499. doi: 10.1016/j.sjbs.2021.07.024. Epub 2021 Jul 12.
Arbuscular mycorrhizal (AM) fungi have beneficial effects on host plants, but their growth is influenced by various factors. This study was carried out to analyze the variation of AM fungi in soils and roots of peach ( L. var. Golden Honey 3, a yellow-flesh variety) trees in different soil layers (0-40 cm) and their correlation with soil properties. The peach tree could be colonized by indigenous AM fungi (2.2-8.7 spores/g soil and 1.63-3.57 cm hyphal length/g soil), achieving 79.50-93.55% of root AM fungal colonization degree. The mycorrhizal growth, root sugars, soil three glomalins, NH -N, NO -N, available P and K, and soil organic matter (SOM) had spatial heterogeneity. Soil spores, but not soil hyphae contributed to soil glomalin, and soil glomalin also contributed to SOM. There was a significant correlation of soil hyphae with spore density, soil NO -N, and SOM. Root mycorrhiza was positively correlated with spore density, NH -N, NO -N, and easily extractable glomalin-related soil protein. Notably, spore density positively correlated with NO -N, available K, SOM, and root fructose and glucose, while negatively correlated with available P and root sucrose. These findings concluded that mycorrhiza of peach showed spatial distribution, and soil properties mainly affected/altered based on the soil spore density.
丛枝菌根（AM）真菌对宿主植物具有有益作用，但其生长受到多种因素的影响。本研究旨在分析不同土壤层（0 - 40厘米）中桃（L. var. Golden Honey 3，黄肉品种）树土壤和根系中AM真菌的变化及其与土壤性质的相关性。桃树可被本地AM真菌定殖（2.2 - 8.7个孢子/克土壤和1.63 - 3.57厘米菌丝长度/克土壤），根AM真菌定殖程度达到79.50 - 93.55%。菌根生长、根糖、土壤三种球囊霉素、NH₄⁺ - N、NO₃⁻ - N、有效磷和钾以及土壤有机质（SOM）具有空间异质性。土壤孢子而非土壤菌丝对土壤球囊霉素有贡献，且土壤球囊霉素对SOM也有贡献。土壤菌丝与孢子密度、土壤NO₃⁻ - N和SOM存在显著相关性。根菌根与孢子密度、NH₄⁺ - N、NO₃⁻ - N和易提取的球囊霉素相关土壤蛋白呈正相关。值得注意的是，孢子密度与NO₃⁻ - N、有效钾、SOM以及根果糖和葡萄糖呈正相关，而与有效磷和根蔗糖呈负相关。这些发现得出结论，桃树菌根呈现空间分布，且土壤性质主要基于土壤孢子密度受到影响/改变。
