湖北农业科学 ›› 2022, Vol. 61 ›› Issue (15): 117-120.doi: 10.14088/j.cnki.issn0439-8114.2022.15.019

• 资源·环境 • 上一篇    下一篇

藤茶内生真菌的分离鉴定及对宿主硒富集的影响

周防震1,2, 周志1,2, 刘水松2, 龚琪雯2, 陈梦洁2, 鄢鹏飞2   

  1. 1.硒食品营养与健康智能技术湖北省工程研究中心,湖北 恩施 445000;
    2.湖北民族大学生物科学与技术学院,湖北 恩施 445000
  • 收稿日期:2021-09-02 出版日期:2022-08-10 发布日期:2022-08-25
  • 作者简介:周防震(1976-),男,湖北浠水人,副教授,博士,主要从事林特资源开发与利用研究,(电话)13593600191(电子信箱)517495529@qq.com。
  • 基金资助:
    硒食品营养与健康湖北省工程研究中心开放基金项目(PT082013); 教育部新农科研究与改革实践项目(教高厅函[2020]20号)

Isolation and identification of endophytic fungi from Amepelopsis grossedentata and its effects on selenium enrichment in host

ZHOU Fang-zhen1,2, ZHOU Zhi1,2, LIU Shui-song2, GONG Qi-wen2, CHEN Meng-jie2, YAN Peng-fei2   

  1. 1. Hubei Engineering Research Center of Selenium Food Nutrition and Health Intelligent Technology, Enshi 445000, Hubei, China;
    2. College of Biological Science and Technology, Hubei Minzu University, Enshi 445000, China
  • Received:2021-09-02 Online:2022-08-10 Published:2022-08-25

摘要: 为了探讨内生真菌对藤茶(Amepelopsis grossedentata)硒积累的影响,从藤茶种子中分离优势内生真菌,通过形态观察和rDNA- ITS序列分析进行鉴定。藤茶实生苗根际灌施亚硒酸钠溶液,同时制备高、低浓度内生真菌孢子悬液,施于藤茶实生苗叶面,适时收集藤茶样本,经干燥处理后,利用原子荧光光谱法测定硒含量。结果表明,分离得到优势内生真菌LZC-1,经鉴定为镰孢菌属菌种(Fusarium sp.);LZC-1处理能显著降低藤茶对土壤中硒的富集(P<0.01),其中高浓度孢子悬液对宿主硒富集的抑制作用显著强于低浓度孢子悬液(P<0.05)。由此可知,施硒可以增加藤茶硒富集,而内生真菌LZC-1可以降低宿主藤茶的硒富集。

关键词: 藤茶(Amepelopsis grossedentata), 内生真菌, 硒富集

Abstract: To investigate the effect of endophytic fungi on selenium accumulation in vine tea (Amepelopsis grossedentata), the dominant endophytic fungi were isolated from vine tea seed and identified by morphological observation and rDNA-ITS sequence analysis. Sodium selenite solution was injected into the rhizosphere of vine tea seedlings, and high and low concentrations of endophytic fungal spore suspension were prepared and applied to the leaf surface of vine tea seedlings. Vine tea samples were collected in time. After drying, the selenium content was determined by atomic fluorescence spectrometry. The results showed that the dominant endophytic fungus LZC-1 was isolated and identified as Fusarium sp.; LZC-1 treatment could significantly reduce the enrichment of selenium in soil by vine tea (P<0.01), and the inhibitory effect of high concentration spore suspension on host selenium enrichment was significantly stronger than that of low concentration spore suspension (P<0.05). From this it can be seen that selenium application can increase the selenium enrichment of vine tea, while endophytic fungus LZC-1 can reduce the selenium enrichment of host vine tea.

Key words: vine tea(Amepelopsis grossedentata), endophytic fungi, selenium enrichment

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