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| Table 3. Preliminary characterization of extracellular bacterial supernatants from P. tunicata (Pt). H. marina (Hm) and Alteromonas sp (Ni1-LEM) on the settlement of the common biofouling diatoms Nitzschia sp1 (Nc), Amphora sp (Amp), Cylindrotheca closterium (Cc), Nitzschia ovalis arnott (Fp), Chaetoceros minutissimus (Nm), Navicula sp1 (Nav sp1), Navicula sp2 (Nav sp2) and Nitzschia sp2 (Nitz sp2) and in the settlement and germination of the spores of U. lactuca. The letters presented are the degree of inhibition of settlement. |
Treatments |
Microorganisms |
||||||||
|
Nc |
Amp |
Cc |
Fp |
Nm |
Nav sp1 |
Nav sp2 |
Nitz sp1 |
U. lactuca |
Enzymic |
|||||||||
Pt + Prot |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Pt + Pept |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Hm + Prot |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Hm + Pept |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Ni1-LEM + Prot |
C |
C |
C |
C |
C |
C |
C |
C |
A (A) |
Ni1-LEM + Pept |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Heat denatured |
|||||||||
Pt 80ºC |
A |
A |
A |
A |
A |
A |
A |
A |
C (C) |
Hm 80ºC |
C |
C |
C |
C |
C |
C |
C |
C |
C (C) |
Ni1-LEM 80ºC |
C |
C |
C |
C |
C |
C |
C |
C |
C (C) |
Dyalizates |
|||||||||
Pt 3500 Da |
C |
C |
C |
C |
C |
C |
C |
C |
C (C) |
Pt 10000 Da |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Hm 3500 Da |
B |
B |
B |
B |
C |
B |
C |
C |
C (C) |
Hm 10000 Da |
C |
C |
B |
C |
C |
C |
B |
C |
B (C) |
Ni1 3500 Da |
C |
C |
C |
C |
C |
C |
C |
C |
C (C) |
Ni1 10000 Da |
C |
C |
C |
C |
C |
C |
C |
C |
C (C) |
Organic phase (non polar) |
|||||||||
Pt |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Hm |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Ni1-LEM |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Aqueous phase (polar) |
|||||||||
Pt |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
Hm |
B |
B |
B |
B |
A |
A |
B |
A |
B (B) |
Ni1-LEM |
A |
A |
A |
A |
A |
A |
A |
A |
A (A) |
The letters in ( ) represent the
percentage germination of U. lactuca zoospores. Prot: Pronase E; Pept: Carboxypeptidase
G. |
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