Intracellular pH signals in the induction of secondary pathways - The case of Eschscholzia californica (Record no. 55293)
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| fixed length control field | 03382nam a2200301Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625164351.0 |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | B-21222 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Intracellular pH signals in the induction of secondary pathways - The case of Eschscholzia californica |
| 490 0# - SERIES STATEMENT | |
| Series statement | Journal of Plant Physiology. 163(3), 369-381, 2006, DOI: 10.1016/j.jplph.2005.11.012 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | Transient peaks of the cytoplasmic pH are essential elements in a number of signal cascades that activate environmental responses or developmental processes in plant cells but little is known about the mechanisms of their generation. In many plant cells, elicitation of the hypersensitive response is preceded by a perturbation of the ionic balance at the plasma membrane including the inhibition of the proton pump and the influx of H+ from the apoplast. A basically different mechanism of cytoplasmic acidification that is fed by vacuolar protons has been discovered in cell suspensions of the California Poppy (Eschscholzia californica). These cells react to a yeast glycoprotein elicitor with the overproduction of benzophenanthridine alkaloids. Low elicitor concentrations trigger the biosynthesis of these phytoalexins without invoking elements of the hypersensitive response. Accumulated data support the existence of a signal path that includes the following steps: Elicitor-activation of a G? protein at the plasma membrane, shown by the binding of GTP?S to the isolated membrane and identification of G? at the protein and gene level.G-protein mediated activation of phospholipase A2 at the same membrane, giving rise to an intracellular peak of lysophosphatidylcholine (LPC).LPC activates amiloride-sensitive H +/Na+ antiporters at the tonoplast. This leads to an efflux of vacuolar protons and transient acidification of the cytoplasm.The efflux of vacuolar protons is both a sufficient and necessary intermediary signal that induces enzymes of alkaloid biosynthesis. This has been demonstrated by artificial acidification of the cytoplasm that triggers alkaloid biosynthesis and by the depletion of the vacuolar proton pool that prevents the elicitor-triggered alkaloid response. Links between the above events that connect them within a distinct signal path are substantiated by the phenotypes of transformed cell lines that either display lowered G? levels due to antisense transformation or express G?-binding antibodies in the cytoplasm. All of these cell lines lack the elicitor-activation of PLA 2 and of vacuolar proton fluxes and show an impaired phytoalexin response to low elicitor concentrations. High elicitor concentrations trigger alkaloid biosynthesis via an increase of jasmonate at a pH-independent signal path. © 2005 Elsevier GmbH. All rights reserved. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | ALKALOID BIOSYNTHESIS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | PH SIGNALING |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | PHOSPHOLIPASE A2 |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | PHYTOALEXINS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | VACUOLAR ION TRANSPORT |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Roos W. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Viehweger K. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Dordschbal B. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Schumann B. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Evers S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Steighardt J. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Schwartze W. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/file/d/1-N8sgDyo5SrQn61w_9u8GeGoeYH53Lre/view?usp=drivesdk">https://drive.google.com/file/d/1-N8sgDyo5SrQn61w_9u8GeGoeYH53Lre/view?usp=drivesdk</a> |
| Public note | Para ver el documento ingresa a Google con tu cuenta @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Clasificación local |
| Koha item type | Documentos solicitados |
| Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clasificación local | Ref1 | CICY | CICY | Documento préstamo interbibliotecario | 25.06.2025 | B-21222 | 25.06.2025 | 25.06.2025 | Documentos solicitados |