Phytophthora palmivora: a comparative study of typical and atypical isolates from cacao (Theobroma cacao)
Sixteen isolates of Phytophthora from cacao in 10 countries were compared for cultural, morphological, physiological, and biochemical characters. Twelve isolates were "typical" of P. palmivora and four were "atypical". The typical isolates had a characteristic stellate pattern on carrot agar while the atypical isolates produced profuse aerial mycelium with no distinct pattern. Elongate, caducous sporangia tapering to the base, with long pedicels attached to the often flat bases were formed by the atypical isolates in contrast to the ovoid, caducous sporangia with short pedicels attached to the round bases produced by the typical isolates. Chlamydospores were formed by the typical but not the atypical isolates. The atypical isolates grew at 9 C on semisynthetic agar medium whereas the typical isolates did not. Two types of electrophoretic protein-band patterns were detected among the 16 isolates one type of was common to the atypical isolates and the other to the typical isolates. The typical isolates correspond to Morphological Form 1 of P. palmivora and the atypical isolates to Morphological Form 4. The atypical group of isolates may represent a species distinct from P. palmivora
Main Authors: | 79551 Idosu, G.O., 133328 Zentmyer, G.A. |
---|---|
Format: | biblioteca |
Published: |
Set-
|
Subjects: | THEOBROMA CACAO, PHYTOPHTHORA PALMIVORA, ENFERMEDADES FUNGOSAS, AISLAMIENTOS, VARIABILIDAD, |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Taxonomic variants in the Phytophthora palmivora complex
by: 133328 Zentmyer, G.A., et al.
Published: (1977) -
Oospore morphology and germination in the Phytophthora palmivora complex from cacao
by: 82260 Kaosiri, T., et al.
Published: (Set-) -
Protein, esterase, and peroxidase patterns in the Phytophthora palmivora complex from cacao
by: 82260 Kaosiri, T., et al.
Published: (Set-) -
Reacción de cultivares de cacao a la inoculación de aislamientos de Phytophthora palmivora
by: Phillips, Willard 105069, et al.
Published: (1989) -
Cacao seedlings blight caused by Phytophthora palmivora
by: 126001 Uchida, J.Y., et al.
Published: (Dic )