Mycorrhizal and dark septate endophytic fungi of <Emphasis Type="Italic">Pedicularis</Emphasis> species from northwest of Yunnan Province,China |
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Authors: | Ai-Rong Li Kai-Yun Guan |
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Institution: | (1) Kunming Botanical Garden of Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650204, China |
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Abstract: | Colonization of mycorrhizal and root endophytic fungi in 14 Pedicularis species from northwest of Yunnan Province, southwest China, was examined. These species included: Pedicularis gracilis Wall., Pedicularis longipes Maxim., Pedicularis axillaris Franch., Pedicularis cephalantha Franch., Pedicularis tenuisecta Franch., Pedicularis tapaoensis Tsoong, Pedicularis likiangensis Franch., Pedicularis dichotoma Bonati, Pedicularis yui Li, Pedicularis rhinanthoides Schrenk, Pedicularis rex C.B. Clarke, Pedicularis longiflora Rudolph., Pedicularis siphonantha Don, and Pedicularis oxycarpa Franch., among which nine are endemic to China (one to Yunnan). Three types of potentially beneficial fungi associated with
roots of these species were observed, namely, arbuscular mycorrhizal fungi, ectomycorrhizal fungi, and dark septate endophytic
fungi (DSEF), with DSEF as the most common colonizers. An unexpected high colonization level was detected in this hemiparasitic
genus. Of the 19 sampling sites examined, 10 gave colonization frequency of above 50% and 6 showed a colonization index of
above 50. Heavy colonization suggested a significant ecological role of these fungi and their potential to be applied to successful
cultivation of these intractable plants. |
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Keywords: | Mycorrhizal fungi Root endophytic fungi Hemiparasitism Orobanchaceae |
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