Plant Lipoxygenases. Physiological and Molecular Features

Porta, Helena; Rocha-Sosa, Mario

doi:10.1104/pp.010787

Cited by 503 publications

(382 citation statements)

References 36 publications

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“…Green leaf volatiles (C5 and C6 alcohols and ketones) originate from free fatty acids released by phospholipases from membranes in response to different abiotic and biotic stresses [30]. In our studies we found only (Z)-3-hexenol which is emitted from tomato under osmotic stress compared with the previous articles which reported four or even nine different C5 and C6 green leaf volatiles, respectively [21,16].…”

Section: The Influence Of Soil Salinity On Volatile Organic Compoundscontrasting

confidence: 53%

The influence of soil salinity on volatile organic compounds emission and photosynthetic parameters of Solanum lycopersicum L. varieties

et al. 2017

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Soil salinity is one of the best known stress factors of plants that can lead to crop yield reduction. Therefore, it is important to identify new tolerance varieties of plants that can grow on saline soils. We have studied the influence of salt on five different tomato varieties from the Western region of Romania and compared them with a commercial hybrid and found that one of them (Rudna) is a very salt-tolerant variety (up to 200 mM NaCl). The assimilation rates and stomata conductance of water vapour are affected by salinity but some of the local varieties of tomato exhibit quite good tolerance. We found that all plants under salinity stress emit (Z)-3-hexenol (a C6, green leaf volatile) and the emission of all terpenes increased in proportion to the salt concentration. The emission of three terpenes, (Z)-beta-ocimene. 2-carene and beta-phellandrene, have been quantitatively correlated with salt concentration.

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Section: The Influence Of Soil Salinity On Volatile Organic Compoundscontrasting

confidence: 53%

The influence of soil salinity on volatile organic compounds emission and photosynthetic parameters of Solanum lycopersicum L. varieties

et al. 2017

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“…It encodes the enzyme lipoxygenase, which catalyzes the addition of molecular oxygen to specific polyunsaturated fatty acids in order to produce hydroperoxy fatty acids in plant. These can then enter several pathways, one of which leads to the production of JA via octadecanoid precursors in a defense response and another that may produce oxylipids implicated in vegetative growth, among others (31). Because Pseudomonas sp.…”

Section: Discussionmentioning

confidence: 99%

Long-Term Induction of Defense Gene Expression in Potato by Pseudomonas sp. LBUM223 and Streptomyces scabies

Arseneault¹,

Pieterse²,

Gérin-Ouellet³

et al. 2014

Phytopathology®

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Streptomyces scabies is a causal agent of common scab of potato, which generates necrotic tuber lesions. We have previously demonstrated that inoculation of potato plants with phenazine-1-carboxylic acid (PCA)-producing Pseudomonas sp. LBUM223 could significantly reduce common scab symptoms. In the present study, we investigated whether LBUM223 or an isogenic phzC-mutant not producing PCA could elicit an induced systemic resistance response in potato. The expression of eight defense-related genes (salicylic acid [SA]-related ChtA, PR-1b, PR-2, and PR-5; and jasmonic acid and ethylene-related LOX, PIN2, PAL-2, and ERF3) was quantified using newly developed TaqMan reversetranscription quantitative polymerase chain reaction assays in 5-and 10-week-old potted potato plants. Although only wild-type LBUM223 was capable of significantly reducing common scab symptoms, the presence of both LBUM223 and its PCA-deficient mutant were equally able to upregulate the expression of LOX and PR-5. The presence of S. scabies overexpressed all SA-related genes. This indicates that (i) upregulation of potato defense-related genes by LBUM223 is unlikely to contribute to common scab's control and (ii) LBUM223's capacity to produce PCA is not involved in this upregulation. These results suggest that a direct interaction occurring between S. scabies and PCA-producing LBUM223 is more likely involved in controlling common scab development.

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“…LOX are non-haem iron-containing dioxygenases widely distributed in the plant kingdom and with diverse roles (Porta and Rocha-Sosa 2002). LOX action passes through the peroxidation of polyunsaturated fatty acids and the formation of a class of end-products known as oxylipins which have specific functions in signaling and plant defense responses (Nooden and Leopold 1988;Rogiers et al 1998;Zhang et al 2006).…”

Section: Abiotic Stresses Response Proteinsmentioning

confidence: 99%

Proteins involved in biotic and abiotic stress responses as the most significant biomarkers in the ripening of Pinot Noir skins

Negri

Robotti

Prinsi

et al. 2011

Funct Integr Genomics

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We propose an integrated approach, obtained by the combination of multivariate statistics and proteomics, useful to isolate candidate biomarkers for the evaluation of grape ripening. We carried out a comparative 2-DE analysis of grape skins collected in three moments of ripening and analyzed the spot volume dataset through the application of principal component analysis followed by forward stepwiselinear discriminant analysis. This technique allowed to discriminate véraison, quite mature and mature samples, and to sort the matched spots according to their significance. We identified 36 spots showing high discriminating coefficients through liquid chromatography -electrospray ionization -tandem mass spectrometry (LC-ESI-MS/MS). Most of them were involved in biotic and abiotic stress responses indicating these enzymes as good candidate markers of berry ripening. These evidences hint at a likely developmental role of these proteins, in addition to their reported activity in stress events. Restricting the same statistical analysis to the samples belonging to the two last stages, it was indicated that this approach can clearly distinguish these close and similar phases of berry development. Taken all together, these results bear out that the employment of the combination of 2-DE and multivariate statistics is a reliable tool in the identification of new protein markers for describing the ripening phases and to assess the overall quality of the fruit.

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Plant Lipoxygenases. Physiological and Molecular Features

Cited by 503 publications

References 36 publications

The influence of soil salinity on volatile organic compounds emission and photosynthetic parameters of Solanum lycopersicum L. varieties

The influence of soil salinity on volatile organic compounds emission and photosynthetic parameters of Solanum lycopersicum L. varieties

Long-Term Induction of Defense Gene Expression in Potato by Pseudomonas sp. LBUM223 and Streptomyces scabies

Proteins involved in biotic and abiotic stress responses as the most significant biomarkers in the ripening of Pinot Noir skins

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