TABLE 1.
Species, plant host, source and designation of isolates of Phytophthora species used in PCR experiments
| Species and taxo- nomic groupa | Plant host (no. of isolates) | Isolate designation and sourceb |
|---|---|---|
| Group I | ||
| P. cactorum | Unknown (3) | 127 77, 234 81 (L. Cooke); 1298 (G. Weidemann) |
| Group II | ||
| P. capsici | Pepper (24) | 1, 17–33, 82–88 (J. Ristaino) |
| Tomato (5) | 34–38 (J. Ristaino) | |
| Pumpkin (3) | 39–41 (J. Ristaino) | |
| Squash (3) | 52, 55, 57 (J. Ristaino) | |
| Cucumber (1) | 61 (J. Ristaino) | |
| P. citrophthora | Citrus (5) | M86, M139, M140, M189, M259 (J. Menge) |
| Walnut (1) | 34-4-7 (J. Mircetich) | |
| P. nicotianae | Tobacco (5) | Rmt 6, 332, 340, 335, 435 (D. Shew) |
| Tomato (5) | 1-3A, 6-1A, 5-3A, 2HB, 6-H (J. Ristaino) | |
| Walnut (1) | 35-1-5 (J. Mircetich) | |
| Boxwood (1) | 2107 (M. Benson) | |
| Vinca (1) | 2127 (M. Benson) | |
| Rhododendron (1) | 2109, 116 (M. Benson) | |
| Azalea (1) | 2121 (M. Benson) | |
| Citrus (5) | D-1, R-1, H-2, BHG-1, B-1 (J. Graham) | |
| P. palmivora | Milkweed (1) | P66 (J. Graham) |
| Citrus (6) | P8, P29, P40, P44, P48, Shaw (J. Graham) | |
| Group III | ||
| P. citricola | Avocado (5) | M213, M215, M220, M265, M266 (J. Menge) |
| Group IV | ||
| P. infestans | Tomato (5) | US-7 NY (W. Fry); PINC 93-2, PINC 93-1, PINC 93-4, PINC 93-5 (P. Shoemaker) |
| Potato (8) | US-6 NY (W. Fry); PINC 94-8-1, PINC 94-19, PINC 94-1, PINC 94-7, PINC 94-37 (P. Shoemaker); US-1, US-8 (B. Christ) | |
| P. mirabilis | Mirabilis jalapa (1) | 0S0016 (W. Fry) |
| Group V | ||
| P. fragariae | Strawberry (5) | A-8, R-4, NC-1, R-1, R-6 (B. Milholland) |
| P. megasperma | Raspberry (2) | NY 318, NY 321 (W. Wilcox) |
| Apricot (1) | NY 222 (W. Wilcox) | |
| Cherry (2) | NY 344, NY 346 (W. Wilcox) | |
| Peach (1) | NY 412 (W. Wilcox) | |
| Walnut (1) | 33-2-9 (J. Mircetich) | |
| P. sojae | Soybean (6) | R1, R3, R4, R8, R13, R25 (X. Yang) |
| Group VI | ||
| P. cinnamomi | Rhododendron (1) | 2301 (M. Benson) |
| Fraser fir (1) | 2302 (M. Benson) | |
| Camellia (1) | 2322 (M. Benson) | |
| Shore juniper (1) | 2325 (M. Benson) | |
| Leucothe (1) | 2349 (M. Benson) | |
| Walnut (1) | 34-2-8 (J. Mircetich) | |
| P. cryptogea | Safflower (2) | PCR-1, 34-1-7 (J. Duniway) |
| P. erythroseptica | Potato (3) | 4, 10, 1 (J. Duniway) |
a
Groups I to VI are taxonomic groups devised by Waterhouse (40) and Stamps et al. (35) to separate the species within the genus. Taxonomic groups are based on morphological and physiological characters of the pathogen.
b
Isolate designation and source indicates the isolate number and name of the investigator from whom the culture was obtained.