The effects of co-colonising ectomycorrhizal fungi on mycorrhizal colonisation and sporocarp formation in Laccaria japonica colonising seedlings of Pinus densiflora
The effects of co-colonising ectomycorrhizal fungi on mycorrhizal colonisation and sporocarp formation in Laccaria japonica colonising seedlings of Pinus densiflora
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DOI：
10.1007/s00572-019-00890-6
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发表时间：
2019-04
期刊：
影响因子：
3.9
通讯作者：
Shijie Zhang;Lu-Min Vaario;Yan Xia;N. Matsushita;Q. Geng;Momi Tsuruta;Hiroyuki Kurokochi;C. Lian
中科院分区：
文献类型：
--
作者：
Shijie Zhang;Lu-Min Vaario;Yan Xia;N. Matsushita;Q. Geng;Momi Tsuruta;Hiroyuki Kurokochi;C. Lian
森林树木被不同种类的外生菌根（ECM）真菌定殖，它们相互竞争或相互作用。大多数ECM真菌可以产生子实体。迄今为止，共定殖真菌物种对ECM真菌中子实体形成的影响仍然未知。在这项研究中，我们研究了寄主植物的生长，菌根定殖，和孢子果的形成时，赤松根Laccaria japonica和其他三种ECM真菌物种（Cenococcum geophilum，Pisolithussp.，和黄乳牛肝菌（Suillus luteus）。在整个实验期间记录孢子果数量。在幼苗移植后45天、62天和1年，还测量了幼苗的生物量、光合速率和菌根定殖率。结果表明，C. geophilum和S. luteus可能对L.日本。孢子果的形成。相关分析表明，杨树幼苗的生物量与菌根定殖呈正相关，而与菌根定殖呈负相关。密花。共生的ECM真菌主要与L. japonica的菌根定殖和子实体形成的影响。日本。不同ECM真菌物种之间的竞争性相互作用可能涉及多种机制，包括更快速地定殖根尖、获得土壤养分或产生抗生素的能力。这些机制需要在进一步的研究中得到证实。
Forest trees are colonised by different species of ectomycorrhizal (ECM) fungi that interact competitively or mutualistically with one another. Most ECM fungi can produce sporocarps. To date, the effects of co-colonising fungal species on sporocarp formation in ECM fungi remain unknown. In this study, we examined host plant growth, mycorrhizal colonisation, and sporocarp formation when roots ofPinus densifloraare colonised byLaccaria japonicaand three other ECM fungal species (Cenococcum geophilum,Pisolithussp., andSuillus luteus). Sporocarp numbers were recorded throughout the experimental period. The biomass, photosynthetic rate, and mycorrhizal colonisation rate of the seedlings were also measured at 45 days, 62 days, and 1 year after seedlings were transplanted. Results indicated thatC.geophilumandS. luteusmay negatively impact mycorrhizal colonisation and sporocarp formation inL. japonica. Sporocarp formation inL. japonicawas positively correlated with conspecific mycorrhizal colonisation but negatively correlated with the biomass of seedlings ofP. densiflora. The co-occurring ECM fungi largely competed withL. japonica, resulting in various effects on mycorrhizal colonisation and sporocarp formation inL. japonica. A variety of mechanisms may be involved in the competitive interactions among the different ECM fungal species, including abilities to more rapidly colonise root tips, acquire soil nutrients, or produce antibiotics. These mechanisms need to be confirmed in further studies.