Phytoalexins: Antiparasitics of higher plants

O’Neill, Melanie J.

doi:10.1016/0169-4758(86)90059-1

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…Numerous compounds are synthesized by plants after nematode attack; a large body of work has accumulated on the role of these compounds (Figure 7) in resistance to nematodes (25, 26,49,50,[52][53][54][55][56][57]. Although lack of space pre cludes a discussion of the function of postinfectionally synthesized compounds, several of these investigations are relevant to the scope of this article.…”

Section: Postinfectional Compoundsmentioning

confidence: 99%

Naturally Occurring Nematicides

Chitwood¹

1993

ACS Symposium Series

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This review of naturally occurring phytochemicals with biological activity against plant-parasitic nematodes focuses on several diverse classes of compounds, including polythienyls, alkaloids, phenolics, polyacetylenes, fatty acids, terpenoids, and others. The nematotoxic mode of action and physiological role of most of these compounds in plants are unknown, although some are synthesized in response to nematode infection. Only a few plant families, primarily the Asteraceae and Fabaceae, have been examined for existence of nematotoxic substances. In a few cases, synthetic analogs of naturally occurring compounds have been synthesized and have possessed stronger biological activity than the naturally occurring ones. Enhanced research and development of phytochemical nematicides and analogs could provide safe, selective compounds for minimizing the multibillion dollar annual losses inflicted by phytoparasitic nematodes in the U.S. Currently available chemicals for management of phytoparasitic nematodes are not only expensive but can also adversely affect the environment or human health (1-3). Consequently, several nematicides have been deregistered or restricted in use during the past decade, and others could face similar restrictions. Because phytoparasitic nematodes inflict annual agricultural losses of 6 billion dollars in the U.S. and 77 billion dollars in the world (4), better management tools are needed urgently.Because higher plants could be expected to be a rich reservoir of interesting compounds with biological activity against phytoparasitic nematodes, isolation and identification of naturally occurring phytochemicals with biological activity against nematodes would be a logical first step for development of new, environmentally safe nematicides. Indeed, higher plants are being increasingly examined as sources for novel compounds with activity against animal-parasitic This chapter not subject to U.S.

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