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Sandor R, Der C, Grosjean K, Anca I, Noirot E, Leborgne-Castel N, Lochman J, Simon-Plas F, Gerbeau-Pissot P. Plasma membrane order and fluidity are diversely triggered by elicitors of plant defence. J Exp Bot 2016; 67:5173-85. [PMID: 27604805 PMCID: PMC5014163 DOI: 10.1093/jxb/erw284] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Although plants are exposed to a great number of pathogens, they usually defend themselves by triggering mechanisms able to limit disease development. Alongside signalling events common to most such incompatible interactions, modifications of plasma membrane (PM) physical properties could be new players in the cell transduction cascade. Different pairs of elicitors (cryptogein, oligogalacturonides, and flagellin) and plant cells (tobacco and Arabidopsis) were used to address the issue of possible modifications of plant PM biophysical properties induced by elicitors and their links to other events of the defence signalling cascade. We observed an increase of PM order whatever the elicitor/plant cell pair used, provided that a signalling cascade was induced. Such membrane modification is dependent on the NADPH oxidase-mediated reactive oxygen species production. Moreover, cryptogein, which is the sole elicitor able to trap sterols, is also the only one able to trigger an increase in PM fluidity. The use of cryptogein variants with altered sterol-binding properties confirms the strong correlation between sterol removal from the PM and PM fluidity enhancement. These results propose PM dynamics as a player in early signalling processes triggered by elicitors of plant defence.
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Affiliation(s)
- Roman Sandor
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic
| | - Christophe Der
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Kevin Grosjean
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Iulia Anca
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Elodie Noirot
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Nathalie Leborgne-Castel
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Jan Lochman
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic
| | - Françoise Simon-Plas
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Patricia Gerbeau-Pissot
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, F-21000 Dijon, France
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Ghignone S, Salvioli A, Anca I, Lumini E, Ortu G, Petiti L, Cruveiller S, Bianciotto V, Piffanelli P, Lanfranco L, Bonfante P. The genome of the obligate endobacterium of an AM fungus reveals an interphylum network of nutritional interactions. ISME J 2012; 6:136-45. [PMID: 21866182 PMCID: PMC3246228 DOI: 10.1038/ismej.2011.110] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 07/11/2011] [Accepted: 07/11/2011] [Indexed: 11/08/2022]
Abstract
As obligate symbionts of most land plants, arbuscular mycorrhizal fungi (AMF) have a crucial role in ecosystems, but to date, in the absence of genomic data, their adaptive biology remains elusive. In addition, endobacteria are found in their cytoplasm, the role of which is unknown. In order to investigate the function of the Gram-negative Candidatus Glomeribacter gigasporarum, an endobacterium of the AMF Gigaspora margarita, we sequenced its genome, leading to an ∼1.72-Mb assembly. Phylogenetic analyses placed Ca. G. gigasporarum in the Burkholderiaceae whereas metabolic network analyses clustered it with insect endobacteria. This positioning of Ca. G. gigasporarum among different bacterial classes reveals that it has undergone convergent evolution to adapt itself to intracellular lifestyle. The genome annotation of this mycorrhizal-fungal endobacterium has revealed an unexpected genetic mosaic where typical determinants of symbiotic, pathogenic and free-living bacteria are integrated in a reduced genome. Ca. G. gigasporarum is an aerobic microbe that depends on its host for carbon, phosphorus and nitrogen supply; it also expresses type II and type III secretion systems and synthesizes vitamin B12, antibiotics- and toxin-resistance molecules, which may contribute to the fungal host's ecological fitness. Ca. G. gigasporarum has an extreme dependence on its host for nutrients and energy, whereas the fungal host is itself an obligate biotroph that relies on a photosynthetic plant. Our work represents the first step towards unraveling a complex network of interphylum interactions, which is expected to have a previously unrecognized ecological impact.
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Affiliation(s)
| | | | - Iulia Anca
- Dipartimento di Biologia Vegetale and IPP-CNR, Torino, Italy
| | - Erica Lumini
- Dipartimento di Biologia Vegetale and IPP-CNR, Torino, Italy
| | - Giuseppe Ortu
- Dipartimento di Biologia Vegetale and IPP-CNR, Torino, Italy
| | - Luca Petiti
- Dipartimento di Biologia Vegetale and IPP-CNR, Torino, Italy
| | | | | | | | - Luisa Lanfranco
- Dipartimento di Biologia Vegetale and IPP-CNR, Torino, Italy
| | - Paola Bonfante
- Dipartimento di Biologia Vegetale and IPP-CNR, Torino, Italy
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Ciofu C, Gherghina I, Craiu I, Anca I, Aboussaad O. Acute hemiplegia in one infant. Rom J Neurol Psychiatry 1994; 32:253-8. [PMID: 7779744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A previously healthy 9-month-old girl, obese (12,500 gm) with sudden onset of hyperthermia (40 degrees C), generalized tonic-clonic seizures, followed by focal seizures, drowsiness, left facial nerve palsy, left lagophthalmos and mydriasis is presented. CT-scan and MRI suggested temporal-parietal infarction due to Sylvian artery occlusion in a 9-month-old infant with familial hypercholesterolemia (type 2 A dyslipidemia). The possibility of a cerebral abscess or herpetic encephalitis was considered. Negative clinic and serologic results excluded this diagnosis. The management of the symptomatology was made with parenteral antibiotics, anticonvulsive and antioedematous cerebral therapy. Favourable evolution with residual left hemiparesis after 30 days, when the child was discharged. CT-scan reevaluation (after 5 months of evolution) showed a hypodense temporal-parietal area abnormality due to a right ischemic infarction.
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Affiliation(s)
- C Ciofu
- Institute for Assistance of Mother and Children Care, Bucharest, Romania
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4
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Maiorescu M, Ciofu E, Stamate M, Anca I, Tomescu E, Balaban I. [Difficulties in diagnosing tuberculosis in nursing infants and young children]. Rev Ig Bacteriol Virusol Parazitol Epidemiol Pneumoftiziol Pneumoftiziol 1984; 33:237-43. [PMID: 6095421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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5
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Duca D, Meilă P, Anca I, Gheorghe V, Ionescu-Cerna M, Maximilian C, Fruchter Z. [Chromosome 16 syndromes]. Rev Pediatr Obstet Ginecol Pediatr 1981; 30:363-71. [PMID: 6803337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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6
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Prişcu R, Maiorescu M, Manolescu E, Anca I, Coeugniet E, Petrescu C, Brezina A. [Clinical and experimental aspects of antithrombotic treatment in children]. Rev Pediatr Obstet Ginecol Pediatr 1975; 24:359-70. [PMID: 814603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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7
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Prişcu R, Maiorescu M, Anca I, Dragomir D. [Treatment of status asthmaticus in children]. Rev Pediatr Obstet Ginecol Pediatr 1974; 23:445-54. [PMID: 4219660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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8
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Prişcu R, Maiorescu M, Anca I, Coeugniet E. [Tests for the rapid and early diagnosis of disseminated intravascular coagulation]. Rev Pediatr Obstet Ginecol Pediatr 1974; 23:325-30. [PMID: 4219646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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9
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Diaconescu M, Stancu A, Prişcu M, Anca I. [On the role of Candida albicans in intestinal pathology]. Med Interna (Bucur) 1973; 25:1135-40. [PMID: 4599751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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10
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Maiorescu M, Anca I, Balaban I, Tomescu E. [A case of pulmonary staphylococcal infection, with myocardial abscesses, purulent mediastinitis and pneumomediastinum with cervical drainage]. Pediatria (Bucur) 1973; 22:453-60. [PMID: 4790544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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11
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Prişcu R, Maiorescu M, Anca I, Wirtz A. [Treatment of acute cerebral edema]. Pediatr Pol 1972; 21:519-28. [PMID: 4660220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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12
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Prişcu R, Maiorescu M, Anca I, Răiciulescu M, Petrescu TC, Stamate M, Neguţ M. [On septicemia with Serratia marcescens in infants (apropos of 9 cases)]. Pediatria (Bucur) 1972; 21:305-22. [PMID: 4574492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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13
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Prişcu R, Maiorescu M, Anca I, Georgescu A, Wirtz A, Iordănescu A. [On hyponatremic conclusions in grave diarrhea in infants]. Pediatria (Bucur) 1972; 21:205-12. [PMID: 5055460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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14
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Prişcu R, Maiorescu M, Anca I, Salzberg N, Arion C. [Septicemia in the premature infant]. Pediatria (Bucur) 1971; 20:193-204. [PMID: 5563988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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15
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Prişcu R, Maiorescu M, Anca I, Dragomir D. [Cardiac syncope in infants]. Pediatria (Bucur) 1971; 20:99-112. [PMID: 5581859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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16
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Prişcu R, Maiorescu M, Anca I. [Simplified method of intravenous re-hydration in severe exsiccosis in infants. (Preliminary note)]. Pediatria (Bucur) 1969; 18:405-20. [PMID: 5378247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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17
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Prişcu R, Anca I, Dragomir D, Diaconescu V. [Congenital toxoplasmosis]. Pediatria (Bucur) 1967; 16:431-6. [PMID: 5591071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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