Traumatic Acid : an Accelerator of Abscission in Cotton Explants

Strong, Frank E.; Kruitwagen, Els

doi:10.1038/2151380b0

Cited by 12 publications

(9 citation statements)

References 5 publications

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“…1). However, traumatic acid was not detected under the conditions used here for GC-MS. Traumatic acid, which is produced from both linoleic acid and linolenic acids, is associated with wounding and cell proliferation in plants (Vick and Zimmerman, 1987a) and causes abscission in cotton buds (Strong and Kruitwagen, 1967). It appeared to have no effect on the rate of growth of bacterial cells in liquid culture at the concentrations tested, and we conclude that a direct antibacteria1 role is unlikely.…”

Section: Dlscusslonmentioning

confidence: 75%

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Volatile Products of the Lipoxygenase Pathway Evolved from Phaseolus vulgaris (L.) Leaves Inoculated with Pseudomonas syringae pv phaseolicola

Croft¹,

Jüttner²,

Slusarenko³

1993

Plant Physiol.

479

279

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Activation of the "lipoxygenase pathway" in plants gives rise to a series of products derived from fatty acids. Analysis by gas chromatography-mass spectroscopy of volatile products produced by Phaseolus vulgaris (1.) cv Red Mexican leaves during a hypersensitive resistance response (HR) to the plant pathogenic bacterium Pseudomonas syringae pv phaseolicola showed evolution of several lipid-derived volatiles, including cis-3-hexenol and trans-2-hexena1, which arise from the 13-hydroperoxide of linolenic acid. These compounds were not produced in detectable amounts by buffer-inoculated leaves, nor did they evolve to such a high degree during comparable stages of the susceptible response. The absence of frans-2,cis-6-nonadienal, a product expected from 9-hydroperoxide of linolenic acid, suggests that lipid peroxidation during the HR proceeded primarily enzymically via bean lipoxygenase, which produces the 13-hydroperoxide, and not via autoxidative processes. The effects of trans-2-hexena1, cis-3-hexeno1, and traumatic acid on P.s pv phaseolicola were investigated. trans-2-Hexenal appeared to be highly bactericidal at low concentrations, whereas cis-3-hexenol was bactericidal only at much higher concentrations. Traumatic acid appeared to have no effect on P.s. pv. phaseolicola at the concentrations tested. These results demonstrate that during plant defense responses against microbial attack, several lipidderived compounds are produced by the plant, some of which possess antimicrobial activity and conceivably are involved in plant disease resistance. The time of production of these substances, in amounts that would be expected to be antibacterial in vitro, correlated with a slowing down of the growth rate of bacteria in the leaves and was seen at a time before the accumulation of isoflavonoid phytoalexins in the host.

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Section: Dlscusslonmentioning

confidence: 75%

“…1). The CI2 product, 12-0x0-cis-9-dodecenoic acid, is a precursor of the plant wound hormone traumatic acid (Strong and Kruitwagen, 1967;Vick and Zimmerman, 1987a;Anderson, 1989;Siedow, 1991). The 9-hydroperoxide of linolenic acid, when present, is converted in bean to truns-2,cis-6-nonadienal by a corresponding lyase activity (Matthew and Galliard, 1978).…”

mentioning

confidence: 99%

Volatile Products of the Lipoxygenase Pathway Evolved from Phaseolus vulgaris (L.) Leaves Inoculated with Pseudomonas syringae pv phaseolicola

Croft¹,

Jüttner²,

Slusarenko³

1993

Plant Physiol.

479

279

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“…It is this dicarboxylic acid that is commercially available and is often used in place of the less stable oxoacid which may have a higher biological activity [77]. For example, traumatic acid causes abscission of cotyledon petioles in cotton explants, and this effect is reduced by auxin treatment [68]. Several other studies reporting the effects of traumatin on plants or pathogens have employed traumatic acid and in some cases it is not clear if the authors were aware of the difference between these molecules.…”

Section: The Traumatin Familymentioning

confidence: 99%

Fatty acid signalling in plants and their associated microorganisms

Farmer

1994

Plant Mol Biol

167

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“…Stimulation of growth of vascular plants and fungi has been reported using traumatin and ODA (Strong, Kruitwagen 1967;Zimmerman, Coudron 1979;Mau, Beelman 1996, Grechkin 2002. However, it is also been proposed that traumatin causes DNA and protein damage, and possesses cytotoxic properties (Grechkin 2002).…”

Section: Introductionmentioning

confidence: 99%

The influence of traumatic acid on the growth and metabolite content of the green alga Chlorella vulgaris Beijerinck

Pietryczuk

Piotrowska

Czerpak

2008

Oceanological and Hydrobiological Studies

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The effect of exogenous traumatic acid, (2E)-dodecene-1,12-dioic acid (TA), at concentrations of 10 -6 -10 -3 M on the growth and development of the unicellular green alga Chlorella vulgaris was examined over 7 days. TA plays an important role in algal growth and development. Treatment with 10 -5 M TA resulted in the greatest increase in cell numbers, by 77%, chlorophyll a content, by 126%, chlorophyll b, by 45%, total carotenoids, by 65%, monosaccharides, by 111%, and water-soluble proteins, by 37%, in relation to the control. After three days of treatment with 10 -5 M TA cultures were analysed by SDS-PAGE, which showed the presence of new polypeptides with molecular weights 13-103 kDa.

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Traumatic Acid : an Accelerator of Abscission in Cotton Explants

Cited by 12 publications

References 5 publications

Volatile Products of the Lipoxygenase Pathway Evolved from Phaseolus vulgaris (L.) Leaves Inoculated with Pseudomonas syringae pv phaseolicola

Volatile Products of the Lipoxygenase Pathway Evolved from Phaseolus vulgaris (L.) Leaves Inoculated with Pseudomonas syringae pv phaseolicola

Fatty acid signalling in plants and their associated microorganisms

The influence of traumatic acid on the growth and metabolite content of the green alga Chlorella vulgaris Beijerinck

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