Topic
Phytoalexin
About: Phytoalexin is a research topic. Over the lifetime, 1161 publications have been published within this topic receiving 63405 citations. The topic is also known as: phytoalexins.
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TL;DR: Changes in pH values at the moment of elicitation of carrot cell suspension cultures influenced the amounts of both phytoalexins synthesized.
18 citations
TL;DR: The two phytoalexins accumulated in limited lesions (resistant reaction) in plant tissue in response to inoculation with B. cinerea at the same time as the growth of infection hyphae was restricted within the lesions, reaching 300–400 μg g −1 dry wt of tissue.
18 citations
TL;DR: Oryzalides A and B, and oryzalic acid A, which were isolated from healthy flag leaves of a bacterial leaf blight-resistant cultivar of rice plant as a group of novel antimicrobial compounds, were confirmed by chemical and spectroscopic studies to be ent-kaurane or ent-kaurene analogues.
Abstract: Oryzalides A and B, and oryzalic acid A, which were isolated from healthy flag leaves of a bacterial leaf blight-resistant cultivar of rice plant as a group of novel antimicrobial compounds, were confirmed by chemical and spectroscopic studies to be ent-kaurane (C19 and C20) or ent-kaurene (C19) analogues, i.e., oryzalide A, ent-15α,16-epoxy-1β-hydroxy-2-oxa-kauran-3-one; B, ent-1β,15α-dihydroxy-2-oxa-16-kauren-3-one; and oryzalic acid A, ent-15α,16-epoxy-2,3-secokauran-2,3-dioic acid.
18 citations
TL;DR: Arachidonic and linoleic acids induced necrosis and the accumulation of isoflavonoid phytoalexins in leaves of French bean cv.
Abstract: Arachidonic and linoleic, but not α-linolenic or γ-linolenic acids, induced necrosis and the accumulation of isoflavonoid phytoalexins in leaves of French bean (Phaseolus vulgaris L.) cv. ‘Red Mexican'. The levels of phytoalexins which accumulated were similar to those found in an incompatible interaction between cv. ‘Red Mexican’and an avirulent race 1 isolate of Pseudomonas syringae pv. phaseolicola. Maximum amounts of phytoalexins accumulated in response to 1.6 mM fattyacids, as opposed to 3.3 or 0.6 mM. The most severe tissue necrosis was not accompanied by the highest levels of phytoalexin accumulation. In contrast to leaves, only trace amounts of phytoalexins were elicited in hypocotyls. The possible significance of, these results is discussed in terms of mechanisms leading to plant cell death and phytoalexin accumulation.
18 citations
TL;DR: The phytoalexin phaseollidin is transformed into phaseollIDin hydrate by liquid mycelial cultures and cell-free culture filtrates of Fusarium solani f.sp.
18 citations