浙江农业学报 ›› 2020, Vol. 32 ›› Issue (2): 337-347.DOI: 10.3969/j.issn.1004-1524.2020.02.18

• 食品科学 • 上一篇    下一篇

松乳菇子实体两个发育时期的转录组分析

宋志强1, 丁祥2, 唐贤1, 朱淼1, 侯怡铃1,*   

  1. 1.西华师范大学 生命科学学院,西南野生动植物资源保护教育部重点实验室,四川 南充 637009;
    2.西华师范大学 环境科学与工程学院,四川 南充 637009
  • 收稿日期:2019-05-10 出版日期:2020-02-25 发布日期:2020-03-13
  • 通讯作者: *侯怡铃,E-mail:starthlh@126.com
  • 作者简介:宋志强(1995—),男,安徽淮北人,硕士研究生,主要从事细胞生物学研究。E-mail:1484655071@qq.com
  • 基金资助:
    四川省科技厅应用基础重点项目(2018JY0087); 四川省科技厅重点研发项目(2018NZ0055); 南充市科技局项目(16YFZJ0043)

Transcriptome analysis of fruiting bodies of Lactarius deliciosus at two developmental stages

SONG Zhiqiang1, DING Xiang2, TANG Xian1, ZHU Miao1, HOU Yiling1,*   

  1. 1. Key Laboratory of Southwest China Wildlife Resources Conservation, Ministry of Education, College of Life Sciences, China West Normal University, Nanchong 637009, China;
    2. College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China
  • Received:2019-05-10 Online:2020-02-25 Published:2020-03-13

摘要: 以松乳菇子实体为研究材料,采用de novo测序对松乳菇子实体进行测序与生物信息学分析,探究松乳菇子实体生长发育过程中幼菇期(LDG-1)和成熟期(LDG-2)基因表达的差异,并探寻影响松乳菇生长发育相关的主要基因和代谢通路。测序结果显示,共获得7.44G(LDG-1)和7.21G(LDG-2)的分析数据(clean reads)。KOG功能注释结果显示,松乳菇在幼菇期(LDG-1)和成熟期(LDG-2)具有全面而复杂的基因功能类别。GO富集结果提示,松乳菇在不同生长阶段(LDG-1和LDG-2)的生物代谢功能存在一定的差异。基因表达水平与聚类分析显示,ATP酶、多功能伴侣蛋白等家族基因为LDG-1和LDG-2主要高表达基因,在能量代谢与参与调控细胞周期中起重要作用。分析差异表达基因发现,相较于LDG-1期,LDG-2期有16 789个差异表达基因,其中7 635个基因上调,9 154个基因下调。差异表达基因KEGG富集通路分析结果显示,氧化磷酸化途径是松乳菇幼菇期生长发育过程中能量代谢的关键途径。进一步分析显示,MAPK信号通路是影响松乳菇子实体发育的关键信号通路,在促进松乳菇子实体进行有性生殖和调控菌丝体的极性生长中起重要作用。

关键词: 松乳菇, de novo测序, 差异表达基因, 氧化磷酸化, MAPK信号通路

Abstract: In this study, the fruiting bodies of Lactarius deliciosus were sequenced by de novo sequencing and bioinformatics analysis. The differences of gene expression between young mushroom (LDG-1) and mature mushroom (LDG-2) during the growth and development of fruiting bodies of Lactarius deliciosus were explored, and the main genes and metabolic pathways related to the growth and development of Lactarius deliciosus were also studied. The sequencing results showed that a total of 7.44G (LDG-1) and 7.21G (LDG-2) clean reads were obtained. The results of KOG functional annotation showed that Lactarius deliciosus had comprehensive and complex gene functional categories at LDG-1 and LDG-2. The results of GO enrichment indicated that there were some differences in the bio-metabolic functions of Lactarius deliciosus at different growth stages (LDG-1 and LDG-2). The analysis of gene expression level and cluster showed that the main high-expression genes were ATPase, multifunctional chaperone family genes, etc., which played an important role in energy metabolism and cell cycle regulation. Analysis of differentially expressed genes showed that compared with LDG-1, there were 16 789 differentially expressed genes in LDG-2, in which 7 635 genes were up-regulated and 9 154 genes were down-regulated. KEGG pathway enrichment of differential expression gene results showed that oxidative phosphorylation was the key pathway of energy metabolism during the growth and development of Lactarius deliciosus. Further analysis showed that MAPK signaling pathway was the key signaling pathway affecting the development of fruiting body of Lactarius deliciosus, which plays an important role in promoting sexual reproduction and regulating polar growth of mycelium of fruiting body of Lactarius deliciosus.

Key words: Lactarius deliciosus, de novo sequencing, differentially expressed genes, oxidative phosphorylation, MAPK signaling pathway

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