Cruciform Nuclear Division in Woronina Pythii (Plasmodiophoromycetes)

Dylewski, Daniel P.; Miller, Charles E.

doi:10.1002/j.1537-2197.1983.tb07923.x

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…The pronounced modification of the metabolism of the host seems to be undoubtedly a universal process during infection by Phytomyxea. This conclusion is further supported by the observation that when the plasmodia surround the host nucleus it becomes enlarged and stays visible until the resting spores are formed (Karling, 1928 ; Karling, 1944 ; Miller, 1959 ; Dylewski & Miller, 1983 ; Kageyama & Asano, 2009 ).…”

Section: Indirect Changes In Food Webs By Altering Growth and Chemicamentioning

confidence: 73%

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The ecological potentials of Phytomyxea (“plasmodiophorids”) in aquatic food webs

2010

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The Phytomyxea (“plasmodiophorids”) including both Plasmodiophorida and Phagomyxida is a monophyletic group of Eukaryotes composed of obligate biotrophic parasites of green plants, brown algae, diatoms and stramenopiles commonly found in many freshwater, soil and marine environments. However, most research on Phytomyxea has been restricted to plant pathogenic species with agricultural importance, thereby missing the huge ecological potential of this enigmatic group of parasites. Members of the Phytomyxea can induce changes in biomass in their hosts (e.g. hypertrophies of the host tissue) under suitable environmental conditions. Upon infection they alter the metabolism of their hosts, consequently changing the metabolic status of their host. This results in an altered chemical composition of the host tissue, which impacts the diversity of species which feed on the tissues of the infected host and on the zoospores produced by the parasites. Furthermore, significant amounts of nutrients derived from the hosts, both primary producers (plants and algae) and primary consumers (litter decomposers and plant parasites [Oomycetes]), can enter the food web at different trophic levels in form of zoospores and resting spores. Large numbers of zoospores and resting spores are produced which can be eaten by secondary and tertiary consumers, such as grazing zooplankton and metazoan filter-feeders. Therefore, these microbes can act as energy-rich nutrient resources which may significantly alter the trophic relationships in fresh water, soil and marine habitats. Based on the presented data, Phytomyxea can significantly contribute to the complexity and energy transfer within food webs.

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Section: Indirect Changes In Food Webs By Altering Growth and Chemicamentioning

confidence: 73%

“…An anecdotal support that phytomyxids are prey in aquatic food webs was given by observations of Dylewski & Miller ( 1983 ) who reported that the survival of Woronina pythii Goldie-Sm. in hemp seed dual cultures with its host ( Pythium spp.)…”

Section: Ecological Rolesmentioning

confidence: 99%