Production of carbon disulfide (CS2) from L-djenkolic acid in the roots of Mimosa pudica L.

Piluk, Jason; Hartel, Peter G.; Hanies, B. L.

doi:10.1007/978-94-011-5270-9_10

Cited by 5 publications

(13 citation statements)

References 31 publications

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“…In the course of these studies and in agreement with previous reports (Hartel and Reeder, 1993;Piluk et al, 1998), we detected a pungent, unpleasant sulfurous odor when 7-d-old gnotobiotically grown plants were dislodged from soil. However, more often than not, it was also observed that, when left undisturbed, neither seedlings germinated in soil nor plants germinated aseptically on agar exhibited an odor detectable to the human subjects performing the experiments.…”

Section: Pudica Roots Emit An Odor When Exposed To Certain Stimulisupporting

confidence: 92%

“…The identity of the compound represented by m/z 239 is unknown. Despite previous reports that the odor emitted by M. pudica roots is caused by CS 2 (Hartel and Reeder, 1993;Piluk et al, 1998), we never detected CS 2 by DART-HRMS, even though we analyzed more than 100 seedling roots of different ages, under various growth conditions (in soil and on agar), and at different periods in the growing season (spring, summer, fall, and winter). Since CS 2 was detected previously by GC-MS, we conducted GC-MS analyses of SPME fibers exposed to M. pudica root volatiles for 5 min under conditions Figure 3.…”

Section: Mass Spectrometric Analysis Of Seedling Roots Revealed the Ementioning

confidence: 77%

“…In previous studies where odor emission from M. pudica roots was reported (Hartel and Haines, 1992;Hartel and Reeder, 1993;Piluk et al, 1998), roots from gnotobiotically grown plants were detached from the aerial parts, washed with water, and subsequently crushed in an air-tight plastic syringe. After a 7-min delay, the headspace of the crushed roots was analyzed by gas chromatography-mass spectrometry (GC-MS).…”

Section: Pudica Seedlings Emit Organosulfur Compounds Into the Envmentioning

confidence: 99%

“…Furthermore, 40 taxa from nine genera within the subfamily Mimosoideae revealed that 29 taxa from six genera produced CS 2 and 19 of the 40 taxa produced COS (Piluk et al, 2001). It has been proposed that the COS and CS 2 are derived from a putative Cys lyase-mediated cleavage of djenkolic acid, an amino acid previously isolated from the plant (Piluk et al, 1998), but this has not been confirmed.…”

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confidence: 99%

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Mechanosensitivity below Ground: Touch-Sensitive Smell-Producing Roots in the Shy Plant Mimosa pudica

et al. 2015

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Section: Pudica Roots Emit An Odor When Exposed To Certain Stimulisupporting

confidence: 92%

Section: Mass Spectrometric Analysis Of Seedling Roots Revealed the Ementioning

confidence: 77%

Section: Pudica Seedlings Emit Organosulfur Compounds Into the Envmentioning

confidence: 99%

mentioning

confidence: 99%

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Mechanosensitivity below Ground: Touch-Sensitive Smell-Producing Roots in the Shy Plant Mimosa pudica

et al. 2015

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“…Neurotoxins in plants fall into several complex categories that include fairly common compounds like auxins and the more exotic compounds like djenkolic acid and mimosine from Mimosa pudica (D'Mello 1989;Piluk et al 1998). Plants produce more than 900 unique non-protein amino acids many of which are neurotoxins (Bell 2003).…”

Section: Neurotoxinsmentioning

confidence: 99%

Neurotransmitters, neuroregulators and neurotoxins in the life of plants

Cao¹,

Cole²,

Murch³

2006

Can. J. Plant Sci.

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Cao, J., Cole, I. B. and Murch, S. J. 2006. Neurotransmitters, neuroregulators and neurotoxins in the life of plants. Can. J. Plant Sci. 86: 1183-1188. Recent evidence has shown that neurologically active compounds play an important role in the physiology of higher plants. The human neurotransmitter melatonin (N-acetyl-5-methoxytryptamine) has been found in more than 140 different plant species and is associated with flower and seed development, reproductive capacity and root growth. Hyperforin, once thought to be characteristic of St. John's wort (Hypericum perforatum L.), has now been found in several other plant species and preliminary findings indicate that it may function as a modulator of plant cell polarity and ion flow. The excitotoxin, β-methylamino-L-alanine, has been used to selectively isolate glutamate receptor mutants in Arabidopsis, and these studies are leading to new understandings of plant cell development. The study of these and other plant neurochemicals may lead to a new understanding of plant signal transmission and the mechanisms by which plant cells sense, interpret and respond to environmental cues. Mots clés: Neuromédiateurs, mélatonine, hyperforine, plante médicinale Plant cells produce a wide range of common and uncommon chemical compounds that ensure the survival of the individual and the species. Most frequently, plant responsive compounds are thought of as secondary metabolites, compounds that are not essential for the growth and development of the plant, but that accumulate in response to environmental stressors. However, there is another group of phytochemicals that includes compounds historically classified as primary or secondary metabolites that are essential for the reallocation of resources in plants in response to changing environmental factors. Neurologically active compounds fall into this mixed category and include such diverse examples as indoleacetic acid, caffeine, epinephrine, acetylcholine, opiates, nicotine, levodopa, serotonin, melatonin, hyperforin and many others. In mammalian systems, neurologically active compounds mediate brain function so that external stimuli are translated into immediate responses. The human neurotransmitter melatonin (N-acetyl-5-methoxytryptamine) is a ubiquitous, highly conserved molecule associated with timing of circadian rhythms in many organisms, including higher plants. Other compounds such as hyperforin, now isolated from several plant species, may function as serotonin transport inhibitors or nonspecific cation channel activators in human brains and potentially in higher plants. A different group of neuroregulatory molecules produced by plants overstimulate human neurons, resulting in neuronal cell damage and death. Excitotoxins such as β-methylamino-L-alanine not only affect human health but are also regulatory molecules redirecting plant growth. Plants lack the "flight or flight" response common

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Non-protein amino acids: plant, soil and ecosystem interactions

et al. 2010

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Non-protein amino acids are a significant store of organic nitrogen in many ecosystems, but there is a lack of knowledge relating to them. Research has indicated that they play important roles as metabolites, as allelopthic chemicals, in nutrient acquisition, in signalling and in stress response. They are also thought to be responsible for significant medical issues in both invertebrate and vertebrate animals. This review attempts to appraise the literature related to non-protein amino acids, both in terms of their metabolism, plant-soil interactions and at the level of the ecosystem, where they are seen as significant drivers of structure and function. Finally, important areas for future research are discussed.

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Production of carbon disulfide (CS2) from L-djenkolic acid in the roots of Mimosa pudica L.

Cited by 5 publications

References 31 publications

Mechanosensitivity below Ground: Touch-Sensitive Smell-Producing Roots in the Shy Plant Mimosa pudica

Mechanosensitivity below Ground: Touch-Sensitive Smell-Producing Roots in the Shy Plant Mimosa pudica

Neurotransmitters, neuroregulators and neurotoxins in the life of plants

Non-protein amino acids: plant, soil and ecosystem interactions

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