Interactions between mycorrhizae and diseases caused by soil‐borne fungi

Perrin, R.

doi:10.1111/j.1475-2743.1990.tb00834.x

Cited by 61 publications

(28 citation statements)

References 38 publications

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“…It is evident from these that (i), the biocontrol response is variable, with protection against fungal and nematode pathogens frequent but not universal, (ii), because experiments in the past have only usually tested single AMF and a single host genotype, * FAX No: +441224713423. E-mail: j.norman@ab.sac.ac.uk diversity within AMF for biocontrol of plant pathogens is unknown and (iii), very little is understood of the mechanisms involved in AMF invoked protection (Perrin, 1990). An understanding of the latter is particularly important if the consistency of response required for commercial application of AMF as agents of biocontrol is to be achieved.…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungal-induced alteration to root architecture in strawberry and induced resistance to the root pathogenPhytophthora fragariae

Atkinson²,

1996

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Three strawberry cultivars Elsanta, Cambridge Favourite and Rhapsody were inoculated with either Glomus fasciculatum or GIomus etunicatum and their growth compared with non-inoculated plants. The roots of all inoculated plants were 55 to 70% colonised after 98 days. Increases in both root and shoot dry weights were measured. Root architecture was atso determined and increases in branching were evident in AMF colonised root systems. The remaining plants were then inoculated with the root pathogen Phytophthorafragariae and allowed to grow for a further 58 days before harvest. In two of the cultivars, Cambridge Favourite and Elsanta, AMF reduced root necrosis by approximately 60 and 30% respectively. Only in the least susceptible cultivar, Rhapsody, was no reduction measured in AMF colonised plants. There were differences in the control conferred by the two arbuscular mycorrhizal fungi and this suggests there may be practical benefits of inoculation. Relationships between the presence of roots of different orders, on inoculation with the pathogen, and subsequent necrosis provided a mechanism for identifying root-architecture driven alteration to susceptibility. Root system necrosis was positively correlated with the proportion of the root system made up of higher order roots (3 ° to 4 °) in non-colonised plants and negatively correlated in AMF colonised plants. These data suggest that root-architecture changes are not important per se but factors expressed concurrently may be.

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Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungal-induced alteration to root architecture in strawberry and induced resistance to the root pathogenPhytophthora fragariae

Atkinson²,

1996

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“…Plant diseases caused by soilborne fungi are usually affected by the formation of mycorrhizas, and mycorrhizas are known to be effective in inhibiting the development of pathogens and reducing incidence of the disease (Dehne, 1982;Caron, 1989;Perrin, 1990). Although most plant species, including a large number of crops, can develop mycorrhizas, Cruciferae is an exceptional plant family, with few or no mycorrhizas (Ocampo et al, 1980).…”

Section: Introductionmentioning

confidence: 99%

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

Narisawa¹,

1998

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Root‐colonizing fungi were isolated from a total of 663 root segments of Chinese cabbage plants grown in soils collected from wheat, rape, Chinese cabbage, and napier grass fields. Most of the 322 isolates were from the wheat field soil and comprised 18 genera and two septate fungal groups. Hyaline and dark septate fungi accounted for approximately half the isolates from the wheat field soil. Sixteen isolates almost completely suppressed clubroot in sterile soil. Amongst these 16 isolates, two from Heteroconium chaetospira were also effective in nonsterile soil. Chinese cabbage seedlings from seed treated with these two isolates appeared healthy, and inoculation with one isolate promoted growth. Hyphae of the fungus covered the root surface and extensively colonized the inner cortical tissues.

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“…Table 1 indicates that the maximum increase in root length was found in dual inoculation of A.laevis plus T.viride. Perrin(1990) found that mycorrhizal inoculation protects the roots from soil pathogens and tends to increase growth of roots. The maximum increase in root length might be due to mycelial network of AM fungi which extends deeper to invade nutrient depletion zone.…”

Section: Resultsmentioning

confidence: 99%

Influence of arbuscular mycorrhizal fungi and Trichoderma viride on growth performance of Salvia officinalis Linn.

Kumar

Aggarwal

Kaushish

2009

JANS

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: Salvia officinalis (Sage) is a popular kitchen herb, member of mint (Lamiaceae) family has been cultivated for its wide range of medicinal values. Arbuscular mycorrhizae (AM) are beneficial symbionts for plant growth and development and offer a viable replacement of high input agricultural technology employed for production of environmentally hazardous fertilizers. Therefore, the present study was focused to analyze the effect of two AM fungi (Acalospora laevis and Glomus mosseae) along with Trichoderma viride, alone and in combination, on different growth parameters of S.officinalis in a green house pot experiment with sterilized soil. AM inoculum and T.viride showed significant increase of different growth parameters after 45 and 90 days of inoculation. Among all treatments, dual combination of A.laevis plus T.viride was most effective in increasing shoot length, leaf area, root length, root weight, AM spore number and percent root colonization. Moreover, maximum increase in shoot biomass was found in plant treated with T.viride.

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Interactions between mycorrhizae and diseases caused by soil‐borne fungi

Cited by 61 publications

References 38 publications

Arbuscular mycorrhizal fungal-induced alteration to root architecture in strawberry and induced resistance to the root pathogenPhytophthora fragariae

Arbuscular mycorrhizal fungal-induced alteration to root architecture in strawberry and induced resistance to the root pathogenPhytophthora fragariae

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

Influence of arbuscular mycorrhizal fungi and Trichoderma viride on growth performance of Salvia officinalis Linn.

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