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中国农学通报 ›› 2022, Vol. 38 ›› Issue (1): 7-14.doi: 10.11924/j.issn.1000-6850.casb2021-0050

所属专题: 生物技术 植物保护

• 农学·农业基础科学 • 上一篇    下一篇

宿主不同对丛枝菌根真菌扩繁效应的影响

马俊卿1,2(), 侯宁1,2, 孙晨瑜1,2, 杨怡森1,2, 覃圣峰1,2, 王勇1,3, 刘璐1,2, 廖虹霖1,2, 黄京华1,2,3()   

  1. 1广西大学农学院,南宁 530004
    2广西高校作物栽培学与耕作学重点实验室,南宁 530004
    3广西大学植物科学实验教学中心,南宁 530004
  • 收稿日期:2021-01-18 修回日期:2021-05-19 出版日期:2022-01-05 发布日期:2022-02-24
  • 通讯作者: 黄京华
  • 作者简介:马俊卿,男,1991年出生,在读博士,研究方向:作物环境与生态。通信地址:530000 广西南宁西乡塘大学路100号 广西大学农学院,E-mail: mjq130138@163.com
  • 基金资助:
    国家自然科学基金“丛枝菌根真菌诱导的黄花蒿根系形态变化及变化机理”(31260092);国家自然科学基金“基于蛋白质组学探究AMF诱导玉米根系形态及生理变化的分子机制”(31760137)

Effects of Different Hosts on Propagation of Arbuscular Mycorrhizal Fungi

MA Junqing1,2(), HOU Ning1,2, SUN Chenyu1,2, YANG Yisen1,2, QIN Shengfeng1,2, WANG Yong1,3, LIU Lu1,2, LIAO Honglin1,2, HUANG Jinghua1,2,3()   

  1. 1College of Agriculture, Guangxi University, Nanning 530004
    2Key Laboratory of Crop Cultivation and Agronomy in Guangxi University, Nanning 530004
    3Experimental Teaching Center of Plant Science, Guangxi University, Nanning 530004
  • Received:2021-01-18 Revised:2021-05-19 Online:2022-01-05 Published:2022-02-24
  • Contact: HUANG Jinghua

摘要:

丛枝菌根真菌(arbuscular mycorrhizal fungi,AMF)在土壤生态系统中发挥着巨大作用,但目前AMF还不能纯培养,只能通过与宿主植物共生的方式扩繁。为研究不同宿主植物对AMF的扩繁效应,本研究选择玉米(Zea mays)、高粱(Sorghum bicolor)、黑麦草(Lolium perenne)、三叶草(Trifolium pratense)作为宿主,分别对聚丛根孢囊霉(Rhizophagus aggregatus)和幼套近明球囊霉(Claroideoglomus etunicatum)进行扩繁。在种植后的第30、60、90和120天分别对接种AMF后宿主植物根系的AMF侵染率、基质中的AMF孢子密度以及AMF的接种势进行测定分析。结果显示,不同宿主对AMF的扩繁效应不同,扩繁结束后聚丛根孢囊霉及幼套近明球囊霉对宿主植物的侵染率由高到低依次为玉米>高粱>三叶草>黑麦草,聚丛根孢囊霉的孢子密度由高到低依次为玉米>高粱>黑麦草>三叶草,幼套近明球囊霉的孢子密度影响由高到低依次为高粱>玉米>三叶草>黑麦草。同一宿主对不同AMF的扩繁效应也不同,玉米和黑麦草对聚丛根孢囊霉的扩繁效应高于幼套近明球囊霉,三叶草和高粱对幼套近明球囊霉的扩繁效应高于聚丛根孢囊霉。试验还发现,AMF的孢子密度与其对植物的侵染率有关,并且存在极显著正相关的关系。本研究表明,玉米是聚丛根孢囊霉扩繁的最佳宿主植物,高粱是幼套近明球囊霉扩繁的最佳宿主植物。

关键词: 丛枝菌根真菌, 扩繁, 侵染率, 孢子密度, 宿主植物, 接种势

Abstract:

Arbuscular mycorrhizal fungi (AMF) play an important role in soil ecosystem, but currently AMF cannot be purely cultured, and can only be propagated by symbiosis with host plants. In order to research the effect of different host plants on the propagation of AMF, maize (Zea mays L.), sorghum (Sorghum bicolor (L.) Moench), ryegrass (Lolium perenne L.) and clover (Trifolium pratense L.) were selected as hosts to propagate Rhizophagus aggregatus and Claroideoglomus etunicatum, respectively. The colonization rate, spore density, and inoculum potential of AMF were measured on the 30th, 60th, 90th and 120th day after AMF inoculation. The results showed that the effects of different hosts on the propagation of AMF were different. The colonization rates of R. aggregatus and C. etunicatum from high to low were maize > sorghum > clover > ryegrass, and the order of spore density of R. aggregatus was maize> sorghum > ryegrass > clover, the order of spore density of C. etunicatum was sorghum > maize> clover > ryegrass. The propagation effect of the same host on different AMF was also different. The effect of maize and ryegrass on R. aggregatus was higher than that of C. etunicatum, but the effect of clover and sorghum on the propagation of C. etunicatum was higher than that of R. aggregatus. It was also found that the spore density of AMF was related to the colonization rate of AMF, and there was a significantly positive correlation. The results show that maize is the best host plant for R. aggregatus propagation and sorghum is the best host plant for C. etunicatum propagation.

Key words: arbuscular mycorrhizal fungi, propagation, colonization rate, spore density, host plants, inoculum potential

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