Use of cellophane to study the infection structures of PNG cocoa isolates of Phytophthora palmivora in vitro
| Autor: | Francine Perrine-Walker |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Oomycete Appressorium Hypha biology Phytophthora palmivora Cellophane New guinea Plant Science biology.organism_classification 01 natural sciences In vitro law.invention 03 medical and health sciences Horticulture 030104 developmental biology law In vitro study 010606 plant biology & botany |
| Zdroj: | Australasian Plant Pathology. 49:701-705 |
| ISSN: | 1448-6032 0815-3191 |
| Popis: | Cocoa pod isolates of Phytophthora palmivora (Ppal) from different locations in Papua New Guinea (PNG) were grown in the presence of cellophane to determine their abilities to mechanically penetrate this barrier and to gain access to the growth media below. Four Ppal isolates, MAG14, MAG30, MAG50, NSP11 and the plant root pathogenic oomycete P. cinnamomi for comparison, were tested for their cellophane penetrating ability. All were able to penetrate the cellophane by forming appressoria and infection peg-like structures. All Ppal isolates formed frond-like structures which grew at various depths within the cellophane while P. cinnamomi formed hyphal aggregations and frond-like structures within the cellophane. This is the first in vitro study demonstrating how Ppal can modify its hyphal morphology to form lobed structures upon contact to the cellophane surface and branched aggregating hyphae within cellophane to gain access to growth media below. |
| Databáze: | OpenAIRE |
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