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Netherlands Journal of Plant Pathology

, Volume 76, Issue 3, pp 140–143 | Cite as

Factors associated with the distribution of some phylloplane microbes

  • F. T. Last
Article

Abstract

Using the spore-fall method, colonies ofSporobolomyces andTilletiopsis 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 ofSporobolomyces were associated with rust and powdery mildew attacks and damage by (a) the nematodeAphelenchoides ritzema-bosi and (b) the miteEriophyes macrorrhynchus. Only powdery mildews increased significantly the incidene ofTilletiopsis.

Samenvatting

Gebruik makend van de sporeval-methode werden gedurende de herfst kolonies vanSporobolomyces enTilletiopsis geïsoleerd van bladeren van varens, coniferen, en mono- en dicotyle planten. De verdeling van de kolonies op agar, die zich naar het spiegelbeeld van de verspreiding op het bladoppervlak ontwikkelde, gaf aan dat beide schimmels zich op sommige waardplanten beperkten tot de bladranden, terwijl zij zich op andere voornamelijk langs de nerven bevonden, niet bij de nerven voorkwamen, of willekeurig verspreid waren.

De kolonies waren gewoonlijk talrijker op aangetaste bladeren dan op onbeschadigde bladeren. De toename vanSporobolomyces ging samen met roest- en meeldauwaantastingen en schade door (a) de nematodeAphelenchoides rtizema-bosi en (b) de mijtEriophyes macrorrhynchus. Een belangrijke toename vanTilletiopsis werd alleen door meeldauwen verrorzaakt.

Keywords

Agar Plant Pathology Microbe Powdery Mildew Leaf Surface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Koninklijke Nederlandse Planteziektenkundige Vereniging 1970

Authors and Affiliations

  • F. T. Last
    • 1
  1. 1.Glasshouse Crops Research InstituteLittlehamptonU.K.

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