School of Agriculture, Ludong University, Yan Tai, China.
Plant Stem Cell Research Institute, Shandong Anran Nanometer Industrial Development Co., Ltd, Hangzhou, Weihai, China.
BMC Ecol Evol. 2024 Apr 25;24(1):54. doi: 10.1186/s12862-024-02239-w.
Bolete cultivation is economically and ecologically valuable. Ectomycorrhizae are advantageous for plant development and productivity. This study investigated how boletes affect the formation of Pinus thunbergii and Quercus acutissima ectomycorrhizae using greenhouse-based mycorrhizal experiments, inoculating P. thunbergii and Q. acutissima with four species of boletes (Suillus bovinus, Suillus luteus, Suillus grevillei, and Retiboletus sinensis).
Three months after inoculation, morphological and molecular analyses identified S. bovinus, S. luteus, S. grevillei and R. sinensis ectomycorrhizae formation on the roots of both tree species. The mycorrhizal infection rate ranged from 40 to 55%. The host plant species determined the mycorrhiza morphology, which was independent of the bolete species. Differences in plant growth, photosynthesis, and endogenous hormone secretion primarily correlated with the host plant species. Infection with all four bolete species significantly promoted the host plants' growth and photosynthesis rates; indole-3-acetic acid, zeatin, and gibberellic acid secretion increased, and the abscisic acid level significantly decreased. Indole-3-acetic acid was also detected in the fermentation broths of all bolete species.
Inoculation with bolete and subsequent mycorrhizae formation significantly altered the morphology and hormone content in the host seedlings, indicating growth promotion. These findings have practical implications for culturing pine and oak tree species.
牛肝菌的栽培具有经济和生态价值。外生菌根对于植物的生长和生产力具有优势。本研究通过温室菌根实验,调查了牛肝菌对黑松和麻栎外生菌根形成的影响,实验中给黑松和麻栎接种了四种牛肝菌(美味牛肝菌、红绒盖牛肝菌、格氏乳牛肝菌和中华乳菇)。
接种 3 个月后,形态学和分子分析鉴定出 S. bovinus、S. luteus、S. grevillei 和 R. sinensis 在两种树种的根上形成外生菌根。菌根感染率在 40%到 55%之间。宿主植物种类决定了菌根的形态,而与牛肝菌的种类无关。植物生长、光合作用和内源激素分泌的差异主要与宿主植物种类有关。所有四种牛肝菌的感染都显著促进了宿主植物的生长和光合作用速率;吲哚-3-乙酸、玉米素和赤霉素的分泌增加,而脱落酸水平显著降低。所有四种牛肝菌的发酵液中也检测到了吲哚-3-乙酸。
牛肝菌的接种和随后的菌根形成显著改变了宿主幼苗的形态和激素含量,表明其具有促进生长的作用。这些发现对于松科和壳斗科树种的栽培具有实际意义。