Literature DB >> 31270609

Fusarium oxysporum KB-3 from Bletilla striata: an orchid mycorrhizal fungus.

Jianwei Jiang1, Ke Zhang1,2, Sheng Cheng1, Qianwen Nie1, Shen-Xian Zhou3, Qingqing Chen1, Jinglong Zhou1, Xiao Zhen1, Xue Ting Li1, Tong Wen Zhen1, Mingyue Xu1, Tom Hsiang4, Zhengxiang Sun5, Yi Zhou6.   

Abstract

Orchid mycorrhizal fungi are essential for the seed germination and vegetative growth of orchids. The orchid Bletilla striata has great medical value in China because its tuber is rich in mannan. Some endophytic fungi were isolated from the roots of B. striata. The isolate KB-3 was selected for experiments because it could promote the germination of B. striata seeds. Based on morphological characters and phylogenetic analysis, the isolate KB-3 was identified as Fusarium oxysporum. Co-cultivation experiments of KB-3 with B. striata and Dendrobium candidum were performed to demonstrate orchid mycorrhizal structures. Microscopic examination showed that KB-3 established colonization and produced coiled hyphal structures known as pelotons within the cortical cells of both orchid roots. The results confirm that F. oxysporum KB-3 can behave as an orchid mycorrhizal fungus.

Entities:  

Keywords:  Fusarium oxysporum; GFP transformation; Hyphal peloton; Mycorrhizal fungus

Mesh：

Year:  2019        PMID： 31270609     DOI： 10.1007/s00572-019-00904-3

Source DB:  PubMed          Journal:  Mycorrhiza        ISSN： 0940-6360            Impact factor:   3.387


  22 in total

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4.  Isolation and identification of beneficial orchid mycorrhizal fungi in Paphiopedilum barbigerum (Orchidaceae).

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5.  Plant Growth-Promoting Ability of Mycorrhizal Fusarium Strain KB-3 Enhanced by Its IAA Producing Endohyphal Bacterium, Klebsiella aerogenes.

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6.  Colonization with non-mycorrhizal culturable endophytic fungi enhances orchid growth and indole acetic acid production.

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  9 in total

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