Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang Guizhou, China.
School of Life Science, Guizhou Normal University, Guiyang Guizhou, China.
Pol J Microbiol. 2021 Sep;70(3):359-372. doi: 10.33073/pjm-2021-034. Epub 2021 Sep 17.
Latent pathogenic fungi (LPFs) affect plant growth, but some of them may stably colonize plants. LPFs were isolated from healthy rhizomes to reveal this mechanism and identified as , an unidentified fungal sp., and . Sterile seedlings were cultivated in sterile or non-sterile soils and inoculated with the LPFs, followed by the plants' analysis. The antifungal activity of rhizome crude extracts on LPF were determined. The effect of inoculation of sterile seedlings by LPFs on the concentrations of rhizome phenolics was evaluated. The rates of growth inhibition amongst LPFs were determined. The LPFs had a strong negative effect on in sterile soil; microbiota in non-sterile soil eliminated such influence. There was an interactive inhibition among LPFs; the secondary metabolites also regulated their colonization in rhizomes. LPFs changed the accumulation of phenolics in . The results provide that colonization of LPFs in rhizomes was regulated by the colonizing microbiota of , the secondary metabolites in the rhizomes, and the mutual inhibition and competition between the different latent pathogens.
潜伏致病性真菌（LPFs）会影响植物生长，但其中一些真菌可能会稳定地定殖在植物上。本研究从健康的根茎中分离 LPFs，以揭示这种机制，并将其鉴定为、一种未鉴定的真菌和。无菌幼苗在无菌或非无菌土壤中培养，并接种 LPFs，然后对植物进行分析。测定根茎粗提物对 LPF 的抗真菌活性。评估无菌幼苗接种 LPF 对根茎酚类浓度的影响。测定 LPF 生长抑制率。LPFs 对无菌土壤中的有很强的负作用；非无菌土壤中的微生物群消除了这种影响。LPFs 之间存在相互抑制作用；次生代谢物也调节它们在根茎中的定殖。LPFs 改变了的酚类物质在中的积累。研究结果表明，LPFs 在根茎中的定殖受的定殖微生物群、根茎中的次生代谢物以及不同潜伏病原体之间的相互抑制和竞争的调节。
