Plant-growth Inhibition by some Fatty Acids and their Analogues

Tso, T. C.

doi:10.1038/202511a0

Cited by 53 publications

(32 citation statements)

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“…Thus, it took a lower level of FFAs in OE than the wild type or KO to reach the same threshold of inhibition of growth. FFAs have been reported as inhibitors of tobacco (Nicotiana tabacum) auxillary bud growth (Tso, 1964), buckwheat (Fagopyrum esculentum) seedling growth (Tsuzuki et al, 1987), straight growth of the Avena coleoptile (Ohkawa and Nishikawa, 1987), and growth of the microalgae Monodus subterraneus (Bosma et al, 2008). In addition, lysophospholipids also inhibit cell and root elongation.…”

Section: Discussionmentioning

confidence: 99%

Patatin-Related Phospholipase pPLAIIIβ-Induced Changes in Lipid Metabolism Alter Cellulose Content and Cell Elongation in Arabidopsis

et al. 2011

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The release of fatty acids from membrane lipids has been implicated in various plant processes, and the patatin-related phospholipases (pPLAs) constitute a major enzyme family that catalyzes fatty acid release. The Arabidopsis thaliana pPLA family has 10 members that are classified into three groups. Group 3 pPLAIII has four members but lacks the canonical lipase/esterase consensus catalytic sequences, and their enzymatic activity and cellular functions have not been delineated. Here, we show that pPLAIIIb hydrolyzes phospholipids and galactolipids and additionally has acyl-CoA thioesterase activity. Alterations of pPLAIIIb result in changes in lipid levels and composition. pPLAIIIb-KO plants have longer leaves, petioles, hypocotyls, primary roots, and root hairs than wild-type plants, whereas pPLAIIIb-OE plants exhibit the opposite phenotype. In addition, pPLAIIIb-OE plants have significantly lower cellulose content and mechanical strength than wild-type plants. Root growth of pPLAIIIb-KO plants is less sensitive to treatment with free fatty acids, the enzymatic products of pPLAIIIb, than wild-type plants; root growth of pPLAIIIb-OE plants is more sensitive. These data suggest that alteration of pPLAIIIb expression and the resulting lipid changes alter cellulose content and cell elongation in Arabidopsis.

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Section: Discussionmentioning

confidence: 99%

Patatin-Related Phospholipase pPLAIIIβ-Induced Changes in Lipid Metabolism Alter Cellulose Content and Cell Elongation in Arabidopsis

et al. 2011

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“…But in recent years there have been reports on the use of some chemicals that destroy actively growing meristematic tissues without affecting Received for publication May 22, 1978. 382 more mature leaf and stem tissues (2,3,4,5,6,7,8,9,12,15,16,17,18,19,20). This study deals with the effects of some chemicals used for disbudding in chrysanthemum and the methods of treatment.…”

Section: Introductionmentioning

confidence: 99%

Studies on Chemical Disbudding of Chrysanthemum

Fujime

1978

Engei Gakkai zasshi

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SummaryThe effect of some chemicals on disbudding mainly of chrysanthemum and the methods of treatment were investigated.1. Sodium chlorate and Tomino, a 90% emulsion of ethyl toluene, tri-methyl benzene and C8 to C12 fatty acids, were the most effective disbudding agents for `Taibyosei -FR-1' tomato.Browning of leaves was more noticeable with sodium chlorate. 2. Symptoms of disbudding appeared early in tomato treated with Tomino at the point of application of the chemical.3. Tomino and a-methyl naphthalene were most effective for chemical disbudding of `Kiyomizu' chrysanthemum.4. The application of 2% Tomino to four cultivars of pot mum resulted in disbudding of axillary buds below the 4 th or 5 th node from the terminal bud in all cultivars.5. Treatment with 1 or 2% Tomino to seven cultivars of pot mum was most effective when the buds had received fourty-five short days.The long day interruption for one week during the short day induction had little effect on disbudding.6. Tomino inhibited stem elongation slightly.

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“…Many lower alkyl esters and alcohols showed various degrees of effectiveness for sucker inhibition (4). The most effective ones are saturated, 8 to 1.2 carbon straight chain esters and alcohols, especially those with 10 carbons (2,3). The commonly used ester for field application is methyl caprate, and the commonly used alcohol is a mixture of 1.-octanol and :1-decanol.…”

Section: Introductionmentioning

confidence: 99%

Residue Levels of Fatty Compounds and Surfactants as Suckering Agents on Tobacco

Tso¹,

Chu²,

DeJong³

1975

Beiträge Zur Tabakforschung / Contributions to Tobacco Research

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Fatty compounds including lauryI alcohol and methyl laurate and Tween 20 surfactant (polyoxyethylene [20] sorbitan monolaurate) and Tween 80 surfactant (polyoxyethylene [20] sorbitan monooleate) with 14C-labelling at various positions were used as suckering agents for Maryland, Burley, and bright tobacco types (Nicotiana tabacum L.) and their residues on the tobacco determined. An average residue of 1.61 ppm of fatty compounds and 1.0 ppm of surfactants were found. The combined totaI of 2.6 ppm residue due to these suckering agents is far below an earlier preliminary test of 4.8 ppm of residue in comparison with 7.000 ppm naturally occurring fatty compounds in tobacco.

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Plant-growth Inhibition by some Fatty Acids and their Analogues

Cited by 53 publications

References 1 publication

Patatin-Related Phospholipase pPLAIIIβ-Induced Changes in Lipid Metabolism Alter Cellulose Content and Cell Elongation in Arabidopsis

Patatin-Related Phospholipase pPLAIIIβ-Induced Changes in Lipid Metabolism Alter Cellulose Content and Cell Elongation in Arabidopsis

Studies on Chemical Disbudding of Chrysanthemum

Residue Levels of Fatty Compounds and Surfactants as Suckering Agents on Tobacco

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