Ecology of Endogone

Dowding, Eleanor Silver

doi:10.1016/s0007-1536(59)80045-0

Cited by 50 publications

(12 citation statements)

References 19 publications

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“…Others could be traced from outside the roots, on to the surface and into the cortical cells producing vesicules in the manner described for Endogone spp. by Mosse (l959a), Nicolson (1959), and Dowling (1959) (see Jackson in press-a). Invasion of root hairs was observed on several occasions.…”

Section: Direct Examination Of Hyphae On Root Surfacesmentioning

confidence: 98%

Studies of fungi in pasture soils

Thornton¹

1965

New Zealand Journal of Agricultural Research

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Fungi colon ising roots of perennial ryegrass (Lalhun perenne L.) and of white clover (Trifolium repens L) were studied by microscopical examination and by cultivation of 2 mm segments cut from washed roots.Sampling sites were selected so that comparisons could be made between plants growing in grazed pastures on: (a) soils from similar parent materials but under different climates: and (b) soils from different parent materials but under similar climates.The incidence of hyphae on roots varied with the type of root examined. The incidence of hyphae on old roots was higher than that on young roots.

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Section: Direct Examination Of Hyphae On Root Surfacesmentioning

confidence: 98%

Studies of fungi in pasture soils

Thornton¹

1965

New Zealand Journal of Agricultural Research

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“…The same or a very similar endophyte occurs extensively in the native flora according to McNabb (1958). However, Gerdemann (1955), Mosse (1956Mosse ( , 1962, Dowding (1959), and Gerdemann and Nicolson (1962) have found large spores to be associated with the phycomycetous symbionts they describe. Neither these nor sporocarps have been seen with the Griselinia endophyte, nor were any recovered by wet-sieving (Gerdemann, 1955) from soils in which Griselinia was growing, including some long-established pot cultures.…”

Section: Host Range and Identity Of Endophytesmentioning

confidence: 99%

The mycorrhizal endophytes of`Griselinia littoralis`(Cornaceae)

Greenall

1963

New Zealand Journal of Botany

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The normal endophyte of Griselillia JitJoralis is an obligate symbiont identified as Rhiz()phaglu p()plliinlls Dangeard. Its morphology and behaviour, when attempts are made to establish agar cultures from root pieces, are similar to those reported by investigators in several countries studying a wide range of hosts. A fungus with similar arbuscles but smaller vesicles and narrower hrphae may occur independently, or with R. poplllilll11. Like R. p()plllilll11 it stimulates growth in poor soils. It is named R. Itllllis sp. nov, \X'hen pieces of root were placed on soil agar, hrphae of R. populinus emerged from 70-90% of them, and grew for 2-3 weeks in association with moulds and bacteria. It was impossible to ascertain whether the finer mycelium of R. lenuis behaved similarly. The growth of R. poplilinlil was greatly reduced when all other organisms were killed by surface sterilisation of root sections, and did not respond to nutrients in the agar, or to the presence of autoclaved hemp seed.Attempts to srnthesise mrcorrhizas using cultures of Pylhium or a culture of RhizophagllJ from Dr }. T. Barrett did not succeed. A search for Endogonaceous fructifications associated with the roots of G. littoralis was unsuccessful.

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“…Infection has been found in arid regions of the U.S. (R. M. Miller, 1979;Reeves et al, 1979), in xerophytic plants in Pakistan (Khan, 1974), and in Libyan soils (EI-Giahmi et al 1976). At the other extreme, VAM occur in the very wet soils of marshes (Dowding, 1959) but are comparatively rare under such conditions; this is because the vegetation may be dominated by intrinsically nonmycorrhizal hosts of the Cyperaceae and Juncaceae and other hydrophytes (Khan, 1974) and, most importantly, because the chemical and physical environment is unfavorable. Read et al (1976) reported low levels of infection in an English wetland, and Mejstrik (1965) found that infection intensity varied inversely with the height of the water table in plants of a Cladietum mariscii association.…”

Section: 22a Watermentioning

confidence: 99%