Hydrophobicity and surface electrostatic charge of conidia of the mycoparasite Coniothyrium minitans

Smith, S.N., Chohan, R., Armstrong, Richard A. and Whipps, J.M. (1998). Hydrophobicity and surface electrostatic charge of conidia of the mycoparasite Coniothyrium minitans. Mycological Research, 102 (2), pp. 243-249.

Abstract

The effect of increasing culture age on cell surface hydrophobicity (CSH) and cell surface electrostatic charge (measured as zeta potential) of conidia from five isolates of Coniothyrium minitans representing three different morphological types was examined. Conidial CSH of three isolates (A2 960/1, CH1 and CH2) decreased with culture age, whereas CSH of two others (B 1300/2 and IMI 134523) remained high for the whole 42 day experimental period. In contrast, cell surface electrostatic charge decreased uniformly in conidia of all five isolates for the first 34 d and then rose slightly at 42 d. The variation in cell surface electrostatic charge (spectrum width) of the sampled conidia decreased with age for all five isolates. In all five isolates cell surface electrostatic charge of conidia became increasingly negative as the pH of the buffer used to suspend conidia was increased from pH 3.0 to 9.0. No relationship between colony morphology of C. minitans and conidial CSH and cell surface electrostatic charge was found.

Publication DOI: https://doi.org/10.1017/S0953756297004796
Divisions: Life & Health Sciences > Biosciences
Life & Health Sciences > Optometry
Life & Health Sciences > Ophthalmic Research Group
Life & Health Sciences
Uncontrolled Keywords: culture age,cell surface hydrophobicity,cell surface electrostatic charge,conidia,Coniothyrium minitans
Published Date: 1998-02
Authors: Smith, S.N.
Chohan, R.
Armstrong, Richard A. ( 0000-0002-5046-3199)
Whipps, J.M.

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