Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), School of Food and Biological Engineering, Chengdu University, No. 2025 Chengluo Avenue, Chengdu 610106, China.
College of Food Science, Tibet Agriculture and Animal Husbandry University, Linzhi 860000, China.
Food Chem. 2022 Jul 1;381:132292. doi: 10.1016/j.foodchem.2022.132292. Epub 2022 Feb 1.
A combination of transcriptomic and metabolomic analyses was performed to systematically understand the metabolic changes in Tricholoma matsutake fruiting bodies during cold storage. In total, 800 metabolites were identified and 19,964 annotated unigenes were quantified. The unigenes related to the catabolism of proteins, carbohydrates, and lipids were mainly upregulated during cold storage, but the related primary metabolites were not accumulated, which indicated complete degradation and loss of nutrients. Concurrently, the synthesis and metabolism of the main components of the cell wall, chitin and β-1,3-glucan, were regulated, indicating the dynamic remodeling of the T. matsutake cell wall structure. Additionally, indole-3-acetic acid and components of its synthesis pathway were found in T. matsutake, indicating their potential role as a communicator between T. matsutake and its symbiotic plants. The results provide new information to improve the understanding of the metabolic mechanism of T. matsutake fruit bodies during postharvest cold storage.
采用转录组学和代谢组学联合分析的方法，系统地研究了松露子实体在冷藏过程中的代谢变化。共鉴定了 800 种代谢物，定量了 19964 个注释的基因。冷藏过程中，与蛋白质、碳水化合物和脂类分解代谢相关的基因主要上调，但相关的初级代谢物并未积累，表明营养物质完全降解和损失。同时，细胞壁的主要成分几丁质和β-1,3-葡聚糖的合成和代谢受到调节，表明松露子实体细胞壁结构的动态重塑。此外，在松露中发现了吲哚-3-乙酸及其合成途径的成分，表明它们可能作为松露与其共生植物之间的通讯物质。该研究结果为提高对松露子实体采后冷藏过程中代谢机制的理解提供了新的信息。
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