Aspergillus germination

The functional role of the CaMK cascade in Aspergillus is based on loss of function studies. The deletion of the Cmkb gene is lethal, therefore the consequences of loss of function was assessed by disrupting the Cmkb promoter, which results in a 1-2 h delay in CMKB protein expression upon spore germination (Joseph and Means, 2000). This delay in expression results in a 2 h delay in nuclear division after germination (both for the first and the second nuclear divisions) which is consistent with a similar increase of the duration of the cell cycle (Joseph and Means, 2000). Together these results clearly demonstrate that CMKB regulates the cell cycle. 

In order to monitor closely the early steps of germination and development of hyphae, and to track the development of the main hypha, a flow-through cell has been designed by Spohr et al. [133]. The adhesion of Aspergillus oryzae... 

A. Nishi (1961). Role of polyphosphate and phospholipid in germinating of spores of Aspergillus niger. J. Bacteriol., 81, 10-17. 

C. J. Shepherd (1957). Changes occurring in the composition of Aspergillus nidulans conidia during germination. J. Gen. Microbiol., 16, 1-14. 

Diatase found in the germinating seeds of barley and other grains and in Aspergillus oryzce, etc., converts starch to maltose and dextrin. 

Fig. 136.—SlerigmatocysHs niger (Aspergillus niger) showing couidiophores and conidiospores formation with stages in germination of spores. (Harshberger, after Henri Coupin.)...

Plumridge, A., Hesse, S.J., Watson, A.J., Lowe, K.C., Stratford, M., and Archer, D.B. 2004. The weak acid preservative sorbic acid inhibits conidial germination and mycelial growth of Aspergillus niger through intracellular acidification. Applied and Environmental Microbiology 70 3506-3511. 

Aspergillus niger spore germination time as a function of a and NMR in small carbohy-drates starch (1 9 ratio) systems at various a . Relative intensity expressed as NMR active (detected) water. 

H and NMR in Aspergillus nidulans Germination Study (Lavoie and Chinachoti, 1995 Pham et al., 1999)... 

Aspergillus nidulans (biA-1 sorA-2) germination time and hyphae growth rate as a function of NMR and NMR T2 relaxation times of cellulose (c), sorbose (s), and orange serum broth solids with different s c ratios at 25°C. (Source From Brown, D. and Rothery, P. Models in Biology-Mathematics, Statistics and Computing, Wiley, Chichester, UK, 1993. With permission.)... 

Pham, X. Role of water mobility on germination and growth of Aspergillus nidulans. Masters Thesis, Department of Food Science, University of Massachusetts, Amherst, MA, USA, 1998. 

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