Suppression of clubroot and<i>Verticillium</i>yellows in Chinese cabbage in the field by the root endophytic fungus,<i>Heteroconium chaetospira</i>

Narisawa, Kazuhiko; Ohki, Kazuo; Hashiba, Teruyoshi

doi:10.1046/j.1365-3059.2000.00425.x

Cited by 71 publications

(67 citation statements)

References 12 publications

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“…These fungi, naturally occurring within healthy plants were reported to be more adapted to the ecological niche harboring targeted pathogens and exhibiting, thus, interesting activities in bioprotection of their hosts [39]. They can colonize plant tissues including those of Growth inhibition score (GIS) estimated using an arbitrary 0-4 scale where 0 = pathogen colony overgrowing antagonist, 1 = GI comprised between 1 and 25% and 4 = GI comprised between 76 and 100%.…”

Section: Discussionmentioning

confidence: 99%

Bio-suppression of Fusarium Wilt Disease in Potato Using Nonpathogenic Potato-associated Fungi

Mejdoub-Trabelsi¹,

Abdallah²

2016

J Plant Pathol Microbiol

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Section: Discussionmentioning

confidence: 99%

Bio-suppression of Fusarium Wilt Disease in Potato Using Nonpathogenic Potato-associated Fungi

Mejdoub-Trabelsi¹,

Abdallah²

2016

J Plant Pathol Microbiol

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“…The group has a broad host range encompassing approximately 600 plant species, suggesting little or no host specificity (9). H. chaetospira is able to colonize the roots of plants from eight families (4,12). Members of the Gramineae family are no exception, but one gramineous crop, barley, is not suitable for H. chaetospira and P. fortinii which have little the ability to grow in the roots of axenically grown plants (12).…”

mentioning

confidence: 99%

“…Fourteen other fungal endophytes (available from K. Narisawa) including C. finlandica (AY606311, PK34 and 608), H. chaetospira (J1HE1, BHM2 and BC2HB2), P. fortinii (J2PM4 and J2PM2) and other unidentified DSE (YG45, T39, 309-4, 309-2, 309-8 and 312-6) collected in Canada and Japan were also tested (12,13). Endophytes were grown on 6-cm Petri dishes filled with oatmeal agar medium.…”

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confidence: 99%

A New Fungal Endophyte, Helminthosporium velutinum, Promoting Growth of a Bioalcohol Plant, Sweet Sorghum

et al. 2010

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A new fungal isolate that grows endophytically in sweet sorghum was identified as Helminthosporium velutinum Link ex Ficinus & Schubert. Light-microscopy of cross-sections of colonized sweet sorghum roots showed that the intercellular, pigmented hyphae of the fungus was mostly limited to the epidermal layer and formed outer mantle-like structures. This endophyte has the ability to significantly increase sweet sorghum biomass. This is the first report of Helminthosporium as an endophyte and could help realize sustainable the biomass production for biofuel purposes.Key words: endophyte, Helminthosporium, sweet sorghumThere is growing interest in biofuel production as an alternative to non-renewable energy sources (2). All renewable fuels of biological origin including fuel wood, bioalcohol and biogas, and purpose-grown crops such as sugarcane, maize, sweet sorghum, and rape seeds, represent an important source of biomass to satisfy increasing demand, raising hopes but also concerns related to competition (water and land) for food production. Assigning abandoned or nonarable lands to the production of purpose-grown biomass could help eliminate risks. Such a strategy would require growth-promoting measures.Dark septate endophtytic fungi (DSE) live in symbiosis with certain plants, improving the ability of these plants to tolerate unfavorable conditions (8,14). When isolated in pure cultures, colonies of DSE are generally non-descript, range in color from olivaceous to brown or almost black, and often lack conidia or other taxonomically distinctive characteristics (9). Taxa that have sporulated in culture include Phialocephala fortinii Wang & Wilcox, Phialocephala sphaeroides Wilson, Cadophora finlandica (Wang & Wilcox) Harr & McNew (as "finlandia"), Leptodontidium orchidicola Sigler & Currah and Heteroconium chaetospira (Grove) Ellis. P. fortinii is the most commonly reported representative of this group. All these fungi have the ability, through mechanisms such as the transfer of nitrogen and uptake of phosphorus, to provide nutrients to host plants (6,15,16). The group has a broad host range encompassing approximately 600 plant species, suggesting little or no host specificity (9). H. chaetospira is able to colonize the roots of plants from eight families (4, 12). Members of the Gramineae family are no exception, but one gramineous crop, barley, is not suitable for H. chaetospira and P. fortinii which have little the ability to grow in the roots of axenically grown plants (12).The purpose of the present study was to identify fungal endophytes which promote the growth of their host plants, particularly sweet sorghum. To obtain such endophytes from the natural environment, it is necessary to choose an appropriate method of isolation with respect to the targeted parts of plants. Therefore, surface sterilization was used to isolate fungal endophytes from living roots, leaves-stems and winter buds, known to be inhabited endophytes (1, 7, 10). We performed a pathogenicity test as a first screening for endophytes and exa...

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“…Recently, H. chaetospira was isolated from roots of Chinese cabbage grown in wheat field soil. This fungus suppressed incidents of clubroot and Verticillium yellows in pot and field trials (Narisawa et al 1998(Narisawa et al , 2000. The endophytic, dematiaceous hyphomycete H. chaetospira colonized the root tissues of 19 plant species, including Chinese cabbage, without visible symptoms such as wilt or necrosis (Narisawa et al 1998(Narisawa et al , 2000, suggesting its affinity with DSE.…”

mentioning

confidence: 99%

“…Potential agents of biocontrol for soil-borne diseases require an organism that not only is persistent in the field but which also can be recovered readily (Narisawa et al 2000). Heteroconium chaetospira can be recovered with relative ease during the course of an experiment in Chinese cabbage fields, but formation of any dispersal or resistant structures, such as conidia or microsclerotia, has not been found in the root tissue of the Chinese cabbage (Narisawa et al 2000).…”

mentioning

confidence: 99%

Colonization process of the root endophytic fungus Heteroconium chaetospira in roots of Chinese cabbage

et al. 2002

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Dark septate endophytic fungi (DSE) may have an important functional relationship with host plants, but these functions and the colonization process remain unknown. We made microscopic observations of the growth of an endophytic hyphomycete in Chinese cabbage roots to understand its colonization process. This hyphomycete was Heteroconium chaetospira, a suspected DSE. Three weeks post inoculation, some hyphae became irregularly lobed and formed microsclerotia within host epidermal cells of healthy plants. In stunted plants, hyphae formed closely packed masses of fungal cells within host epidermal cells, but conidiophores rarely broke through the cell walls to produce conidia.Key words Colonization process · Heteroconium chaetospira · Microsclerotium · Root endophytic fungus · Dematiaceous hyphomycete Roots of most plants are infected by fungi, and their relationships range from antagonism to mutualism (Read et al. 1992). For example, mycorrhizal fungi associate with many plant species and benefit their host plants. Besides mycorrhizal fungi, root-associated dark septate endophytic fungi

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Suppression of clubroot andVerticilliumyellows in Chinese cabbage in the field by the root endophytic fungus,Heteroconium chaetospira

Cited by 71 publications

References 12 publications

Bio-suppression of Fusarium Wilt Disease in Potato Using Nonpathogenic Potato-associated Fungi

Bio-suppression of Fusarium Wilt Disease in Potato Using Nonpathogenic Potato-associated Fungi

A New Fungal Endophyte, Helminthosporium velutinum, Promoting Growth of a Bioalcohol Plant, Sweet Sorghum

Colonization process of the root endophytic fungus Heteroconium chaetospira in roots of Chinese cabbage

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