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| Table 4. Effect of plant growth regulators and of A. alternata on the secretion of endo-PGase from T. Harzianum. |
|
Additions to the submerged culture |
Endo-PG activity of T. harzianum (mM reducing sugars min-1) |
% endo-PG activity |
|
None1 |
0.7 + 0.1a |
100 |
|
40 ppm GA3 |
1.1 + 0.2b |
155 |
|
40 ppm IAA |
0.9 + 0.2b |
132 |
|
40 ppm BAP |
1.2 + 0.3c |
174 |
|
A. alternata (heat inactive.) |
0.7 + 0.1a |
100 |
|
A. alternata2 |
0.7 + 0.2a |
100 |
|
1 40 ppm of either GA3, IAA or BAP did not alter endo-PG activity, when added to the assay medium of control. |
| 2 A. alternata did not show endo-PG activity at day 12. Means within the column followed by the same letter are not significantly different at p<0.05. |
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