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园艺学报 ›› 2023, Vol. 50 ›› Issue (6): 1243-1254.doi: 10.16420/j.issn.0513-353x.2022-0546

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

信号分子H2O2调控糙皮侧耳菌盖颜色形成的机制初探

侯潞丹1,3, 颜克兴1, 董帅1, 刘星雨1, 常明昌1,2, 孟俊龙1,2,*()   

  1. 1山西农业大学食品科学与工程学院,山西太谷 030801
    2山西省食用菌工程技术研究中心,山西太谷 030801
    3黄土高原食用菌山西省重点实验室,山西太谷 030801
  • 收稿日期:2022-12-15 修回日期:2023-04-21 出版日期:2023-06-25 发布日期:2023-06-27
  • 通讯作者: * (E-mail:mengjunlongseth@hotmail.com
  • 基金资助:
    山西省博士毕业生、博士后研究人员来晋工作奖励经费科研项目(SXBYKY2022029);山西农业大学博士科研启动项目(2021BQ90)

Preliminary Study on the Mechanism of Signal Molecule H2O2 Regulating the Formation of Pleurotus ostreatus Cap Color

HOU Ludan1,3, YAN Kexing1, DONG Shuai1, LIU Xingyu1, CHANG Mingchang1,2, MENG Junlong1,2,*()   

  1. 1College of Food Science and Engineering,Shanxi Agricultural University,Taigu,Shanxi 030801,China
    2Shanxi Engineering Research Center of Edible Fungi,Taigu,Shanxi 030801,China
    3Shanxi Key Laboratory of Edible Fungi for Loess Plateau,Taigu,Shanxi 030801,China
  • Received:2022-12-15 Revised:2023-04-21 Published:2023-06-25 Online:2023-06-27

摘要:

通过外源喷施H2O2及其清除剂N, N'-二甲基硫脲(N, N'-Dimethylthiourea,DMTU)试验明确了H2O2能够参与调控糙皮侧耳(Pleurotus ostreatus)菌盖颜色的形成。利用已报道的双孢蘑菇(Agaricus bisporus)黑色素合成途径为参考,通过序列比对鉴定出28个参与黑色素合成途径的基因,并通过qPCR分析外源H2O2对不同途径中关键酶基因相对表达量的影响。结果表明H2O2信号分子一方面可调控不同黑色素合成途径中关键酶基因的表达,使得糙皮侧耳中不同类型黑色素比例发生变化而影响菌盖颜色;另一方面可促进铜转录因子基因mac、铜转运蛋白基因ctr及多酚氧化酶基因ppo1的高表达,进而影响菌盖颜色形成。

关键词: 糙皮侧耳, 菌盖颜色, 过氧化氢, 多酚氧化酶, 铜离子转运

Abstract:

By spraying H2O2 and its scavenger N,N'-dimethylthiourea(DMTU)externally,it was clarified that H2O2 can participate in regulating the formation of Pleurotus ostreatus cap color. Using the reported Agaricus bisporus as a reference,28 genes involved in the melanin synthesis pathways were identified through sequence alignment,and the effect of exogenous H2O2 on the relative expression of key enzyme genes in different pathways was analyzed by qPCR. The results showed that H2O2 signaling molecule can change the proportion of different types of melanin in P. ostreatus and affecting the color of the cap by regulating the expression of key enzyme genes in different melanin synthesis pathways. On the other hand,it can promote the high expression of copper transcription factor genes mac,copper transporter genes ctr and polyphenol oxidase gene ppo1,and finally affect the formation of cap color.

Key words: Pleurotus ostreatus, cap color, hydrogen peroxide, polyphenol oxidase, copper ion transport

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