Lipid signaling in plants

Wang, Xuemin; Chapman, Kent D.

doi:10.3389/fpls.2013.00216

Cited by 34 publications

(21 citation statements)

References 19 publications

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“…Our results suggest that alterations in lipid signaling and the effects of qualitative and quantitative changes in flavonoid composition are two additional mechanisms by which TiO 2 NPs may affect biological functions. The internalized NPs may disrupt processes that involve lipid signaling (e.g., plant hormonal responses and responses to abiotic stresses [52]). In contrast to mammalian cells [53], intracellular flavonoid signaling in plant cells has remained largely unexplored.…”

Section: Discussionmentioning

confidence: 99%

Metabolomic analyses of the bio-corona formed on TiO2 nanoparticles incubated with plant leaf tissues

2020

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Background: The surface of a nanoparticle adsorbs molecules from its surroundings with a specific affinity determined by the chemical and physical properties of the nanomaterial. When a nanoparticle is exposed to a biological system, the adsorbed molecules form a dynamic and specific surface layer called a bio-corona. The present study aimed to identify the metabolites that form the bio-corona around anatase TiO 2 nanoparticles incubated with leaves of the model plant Arabidopsis thaliana. Results:We used an untargeted metabolomics approach and compared the metabolites isolated from wild-type plants with plants deficient in a class of polyphenolic compounds called flavonoids. Conclusions:These analyses showed that TiO 2 nanoparticle coronas are enriched for flavonoids and lipids and that these metabolite classes compete with each other for binding the nanoparticle surface.

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Section: Discussionmentioning

confidence: 99%

Metabolomic analyses of the bio-corona formed on TiO2 nanoparticles incubated with plant leaf tissues

2020

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“…Phospholipids act as intracellular signals regulating development as well as the response to biotic and abiotic stress (Zhu, 2002 ; Wang et al, 2007 ; Munnik and Testerink, 2009 ; Wang and Chapman, 2012 ; Gillaspy, 2013 ; Ischebeck et al, 2013 ; Hung et al, 2014 ). One of these, phosphatidic acid is generated in the plasma membrane in response to several environmental stresses and ABA via phospholipases D or C and partakes in intracellular signal transduction (Welti et al, 2002 ; Wang et al, 2007 ; Munnik and Testerink, 2009 ; McLoughlin and Testerink, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Phloem Proteomics Reveals New Lipid-Binding Proteins with a Putative Role in Lipid-Mediated Signaling

et al. 2016

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Global climate changes inversely affect our ability to grow the food required for an increasing world population. To combat future crop loss due to abiotic stress, we need to understand the signals responsible for changes in plant development and the resulting adaptations, especially the signaling molecules traveling long-distance through the plant phloem. Using a proteomics approach, we had identified several putative lipid-binding proteins in the phloem exudates. Simultaneously, we identified several complex lipids as well as jasmonates. These findings prompted us to propose that phloem (phospho-) lipids could act as long-distance developmental signals in response to abiotic stress, and that they are released, sensed, and moved by phloem lipid-binding proteins (Benning et al., 2012). Indeed, the proteins we identified include lipases that could release a signaling lipid into the phloem, putative receptor components, and proteins that could mediate lipid-movement. To test this possible protein-based lipid-signaling pathway, three of the proteins, which could potentially act in a relay, are characterized here: (I) a putative GDSL-motif lipase (II) a PIG-P-like protein, with a possible receptor-like function; (III) and PLAFP (phloem lipid-associated family protein), a predicted lipid-binding protein of unknown function. Here we show that all three proteins bind lipids, in particular phosphatidic acid (PtdOH), which is known to participate in intracellular stress signaling. Genes encoding these proteins are expressed in the vasculature, a prerequisite for phloem transport. Cellular localization studies show that the proteins are not retained in the endoplasmic reticulum but surround the cell in a spotted pattern that has been previously observed with receptors and plasmodesmatal proteins. Abiotic signals that induce the production of PtdOH also regulate the expression of GDSL-lipase and PLAFP, albeit in opposite patterns. Our findings suggest that while all three proteins are indeed lipid-binding and act in the vasculature possibly in a function related to long-distance signaling, the three proteins do not act in the same but rather in distinct pathways. It also points toward PLAFP as a prime candidate to investigate long-distance lipid signaling in the plant drought response.

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“…Briefly, 1 mL of internal standard (19:0, 1 mg/mL in hexane) and 1 mL of toluene Fatty acids play multiple roles in plants as structural components of cell membranes and energy stores [42]. Moreover, FA are involved in cell signaling associated to plant development and response to abiotic and biotic stresses [43]. Re-modelling the cell membrane fluidity mediated by change in its FA composition is an adaptive response of plants to environmental stresses as low and high temperatures and drought as was already documented [44,45].…”

Section: Fatty Acid Analysismentioning

confidence: 99%

Fatty Acid Content and Composition of the Morphological Fractions of Cistus Ladanifer L. and Its Seasonal Variation

et al. 2020

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Cistus ladanifer L. is a shrub from Cistaceae family, widespread in Mediterranean countries. Fatty acids (FA) have multiple roles in plants and are involved in adaption mechanisms to environmental conditions. This work evaluated the FA content and composition of each morphological fraction of C. ladanifer (leaves, stems, flower buds, flowers and seed heads) throughout a full year. Cistus ladanifer plants were collected in southern Portugal, during four consecutive seasons (18 plants/season), and the different morphological plant fractions (leaves, stems, flower buds, flowers and seed heads) were separated. Cistus ladanifer morphological fractions showed distinct FA compositions, being possible to discriminate three groups—the leaves that showed to be dominated by saturated FA (main 20:0) and contain branched-chain FA (iso-19:0 and iso-21:0); the stems that are composed mainly by SFA (main 22:0); and the reproductive organs that showed higher contents of polyunsaturated FA (PUFA) and the 16:0 as the main SFA. The FA composition of leaves changed over seasons, with replacement of the PUFA by monounsaturated FA and branched-chain FA during hot seasons. Regarding the other C. ladanifer morphological fractions, the FA composition was more stable over seasons, suggesting that leaves are more prone to adaptations to environmental changes.

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Lipid signaling in plants

Cited by 34 publications

References 19 publications

Metabolomic analyses of the bio-corona formed on TiO2 nanoparticles incubated with plant leaf tissues

Metabolomic analyses of the bio-corona formed on TiO2 nanoparticles incubated with plant leaf tissues

Phloem Proteomics Reveals New Lipid-Binding Proteins with a Putative Role in Lipid-Mediated Signaling

Fatty Acid Content and Composition of the Morphological Fractions of Cistus Ladanifer L. and Its Seasonal Variation

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