1887

Abstract

The time course of germination of conidia of in the presence of different germination stimulants is consistent with the postulate that the stimulation of germination by anthranilic acid can be attributed to its previously established conversion to 2,3-dihydroxybenzoic acid in conidia. The activity of a number of synthetic chelating agents, such as EDTA and 1,10-phenanthroline, in promoting germination of the same order as 2,3-dihydroxybenzoic acid at about the same molarity provides support for the hypothesis that the chelating properties of the latter compound are important in its biological action.

Experiments with conidia produced on media of different iron concentrations indicate that in the absence of a germination stimulant there is a high inverse correlation between the percentage germination of conidia and conidial iron content. However, in the presence of anthranilic acid there is no significant correlation between these parameters, percentage germination remaining uniformly high regardless of the conidial iron concentration. It is concluded that conidial iron is involved in the inhibition of germination and that this inhibition can be relieved non-specifically by a variety of chelating agents.

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/content/journal/micro/10.1099/00221287-121-1-169
1980-11-01
2021-10-22
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References

  1. Harper D.B., Swinburne T.R. 1979; 2,3- Dihydroxy-benzoic acid and related compounds as stimulants of germination of conidia of Colletotri- chum musae (Berk, and Curt.) Arx.. Physiological Plant Pathology 14:363–370
    [Google Scholar]
  2. Lankford C.E. 1973; Bacterial stimulation of iron.. C.R.C. Critical Reviews in Microbiology 2:273–331
    [Google Scholar]
  3. Mccracken A.R., Swinburne T.R. 1979; Siderophores produced by saprophytic bacteria as stimulants of germination of conidia of Colletotrichum musae.. Physiological Plant Pathology 15:331–340
    [Google Scholar]
  4. Mccracken A.R., Swinburne T.R. 1980; Effect of bacteria isolated from the surface of banana fruits on the germination of conidia of Colletotrichum musae (Berk, and Curt.) Arx.. Transactions of the British Mycological Society 74:18–20
    [Google Scholar]
  5. Neilands J.B. 1973; Microbial iron transport compounds.. In Inorganic Biochemistry pp. 167–202 Edited by Eichkorn G. Amsterdam: Elsevier;
    [Google Scholar]
  6. Swinburne T.R. 1976; Stimulants of germination and appressoria formation by Colletotrichum musae (Berk, and Curt.) Arx in banana leachate.. Phytopathologische Zeitschrift 87:74–90
    [Google Scholar]
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