De microflora of het blad vanBeta vulgaris

Kerling, L. C. P.

doi:10.1007/bf02137361

Cited by 23 publications

(8 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1) shows close similarities to the results with rye (Fokkema, 1971), both in the kinds of micro-orga- nism reported most frequently, and in the way these fungi were influenced by the presence of pollen on the leaves. The results do not compare closely with those of Kerling (1958) who worked with fodder beet which was not flowering. Numbers of micro-organisms recorded in her work did not exceed 5000 per cm 2 at any sample, resembling records made before flowering on sugarbeet.…”

Section: Discussioncontrasting

confidence: 78%

“…Studies by Last (1955), Kerling (1958), Dickinson (1967) and others have shown the presence of an active and changing fungal flora in the phyllosphere of living leaves. Fokkema (1968Fokkema ( , 1971 has shown that pollen is important in influencing the numbers of these fungi on leaves of rye, an anemophilous plant, and strongly increases numbers of the four groups of saprophytic fungi distinguished as pink yeasts, white yeasts, Aureobasidium pulluIans and Cladosporium spp.. Fokkema also found that pollen could enhance lesion production on rye leaves caused by Helminthosporium sativum, although this enhancement was lost if inoculations were made some time after pollen was shed naturally onto leaves, and when the saprophytic fungal leaf mieroflora had reached a high density.…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

The effect of pollen on the fungal leaf microflora of Beta vulgaris L. and on infection of leaves by Phoma betae

Warren¹

1972

Netherlands Journal of Plant Pathology

View full text Add to dashboard Cite

Studies were made on the leaf-inhabiting fungus flora of two plots of flowering sugarbeet. Flowers were removed from plants of one plot as they appeared. Changes in the numbers of micro-organisms on leaves were recorded by leaf washing and leaf homogenization techniques, and were found to follow closely the changes in numbers of pollen grains seen on cleared leaf discs. The main colonizers, grouped into pink yeasts, white yeasts, Cladosporium spp. and Aureobasidium pullulans, were all influenced by the natural presence of pollen and reached high numbers on leaves in the plot bearing flowers. Rainfall was not found to influence numbers of pollen grains or micro-organisms greatly, but high temperature led to isolation of smaller numbers of pink and white yeasts. Recovery of populations was swift after hot weather, and may be linked with the high contamination of fieldcollected sugarbeet pollen by components of the microflora. The spectrum of fungi growing from washed leaf discs differed qualitatively from assessments made by washing and homogenization.Rye pollen stimulates Phoma betae to aggressive infection of sugarbeet leaves on which, due to the prevention of a natural pollen deposit, the development of the leaf microflora is meagre. Sugarbeet plants in both plots were inoculated with conidia of P. betae with or without added rye pollen. The presence of a dense microflora, associated with a high natural pollen deposit, reduced the incidence of aggressive infection normally stimulated by the addition of rye pollen to inoculum.

show abstract

Section: Discussioncontrasting

confidence: 78%

Section: Introductionmentioning

confidence: 97%

The effect of pollen on the fungal leaf microflora of Beta vulgaris L. and on infection of leaves by Phoma betae

Warren¹

1972

Netherlands Journal of Plant Pathology

View full text Add to dashboard Cite

show abstract

“…Sclerographium phyllanticola on Phyllanthus discoideus (Last and Deighton, 1965), most phylloplane microbes (see Kerling, 1958) colonize a wide variety of plants. During the present study colonies of Tilletiopsis were cultured from hosts in the Polypodiaceae, Pinaceae, Aceraceae, Betulaceae, Caryophyllaceae, Compositae, Cruciferae, Cucurbitaceae, Fagaceae, Gramineae, Labiatae, Malvaceae, Onagraceae, Papilionaceae, Rosaceae and Scrophulariaceae.…”

Section: Observationsmentioning

confidence: 99%

Factors associated with the distribution of some phylloplane microbes

Last¹

1970

Netherlands Journal of Plant Pathology

View full text Add to dashboard Cite

Using the spore-fall method, colonies of Sporobolomyces and Tilletiopsis were isolated, during autumn, from leaves of ferns, conifers, mono-and di-cotyledonous plants. Colonies on agar, which mirror-imaged leaf surface distributions, indicated that the above-mentioned fungi were, on some hosts, restricted to leaf margins while on others they occurred mainly along veins, were absent from veins or were randomly distributed. Colonies were commonly more numerous on parasitized than on undamaged leaves. Increased numbers of Sporobolomyces were associated with rust and powdery mildew attacks and damage by (a) the nematode Aphelenchoides ritzema-bosi and (13) the mite Eriophyes macrorrhynchus. Only powdery mildews increased significantly the incidence of Tilletiopsis.

show abstract

“…Yeasts on pasture plant leaves in New Zealand reached peaks of over 10 7 / g wet weight, and were mainly species of the non-fermenting genera Cryptococcus and Rhodotorula (di Menna 1959). Bacteria and yeasts on leaves are rarely or never parasitic but live non-invasively on the leaf surface in a habitat called the phyllosphere (Last 1955;Ruinen 1956) or the phylloplane (Kerling 1958). Phyllo-sphere is a better term than phylloplane, for a habitat must have more than two dimensions, no matter how shallow the third.…”

Section: Introductionmentioning

confidence: 99%

Moulds on leaves of perennial ryegrass and white clover

Menna¹,

Parle²

1970

New Zealand Journal of Agricultural Research

View full text Add to dashboard Cite

Moulds demonstrable by routine culture techniques on leaves of pasture plants were examined to assess the incidence of toxinogenic groups. Perennial ryegrass, white clover, and litter from ryegrassdominant pasture were collected regularly for 2 years from sites in the Waikatc basin. Numbers of moulds were highest on litter, lower on ryegrass leaves, and lowest on clover. Numbers were greater in paddocks being grazed than in those from which stock were excluded. The most commonly recovered groups were, in approximate order of frequency, pycnidial forms; Cephalosporium spp.; Cladosporium herbarum; Fusarium spp., in particular F. nivale; Colletotrichum spp.; Rhyncosporium spp.; Verticillium spp.; Myrothecium spp.; Pithomyces chartarum; and Metarrhizium aniso pliae. F. nivale and two groups of Cephalosporium were virtually restricted to ryegrass leaves and litter, and Verticillium spp. and M. anisopliae to clover leaves; other groups were common to all types of substrate. The litter flora was qualitatively like that of green ryegrass leaves; that from some mixed pasture samples from Gisborne was similar to that from Waikato material.Almost all moulds isolated belonged to taxa known to have some pathogenicity to plants; they did not appear to be true members of the phyllosphere. No evidence was found for succession of populations, each group apparently varying independently of the others. P. chartarum, F. nivale, and Myrotheciurn spp. were the most commonly occurring groups known to be toxic to mammals. P. chartarum made up about 1% of the moulds isolated during the first half of 1968, when there was a widespread outbreak of facial eczema.

show abstract

De microflora of het blad vanBeta vulgaris

Cited by 23 publications

References 5 publications

The effect of pollen on the fungal leaf microflora of Beta vulgaris L. and on infection of leaves by Phoma betae

The effect of pollen on the fungal leaf microflora of Beta vulgaris L. and on infection of leaves by Phoma betae

Factors associated with the distribution of some phylloplane microbes

Moulds on leaves of perennial ryegrass and white clover

Contact Info

Product

Resources

About