Defects in the Cytochrome b6/f Complex Prevent Light-Induced Expression of Nuclear Genes Involved in Chlorophyll Biosynthesis1 (Record no. 42267)
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| fixed length control field | 02248nam a2200217Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625124711.0 |
| 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-7955 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Defects in the Cytochrome b6/f Complex Prevent Light-Induced Expression of Nuclear Genes Involved in Chlorophyll Biosynthesis1 |
| 490 0# - SERIES STATEMENT | |
| Volume/sequential designation | Plant Physiology, 141, p.1128-1137, 2006 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | Mutants with defects in the cytochrome (cyt)b6/f complex were analyzed for their effect on the expression of a subgroup of nuclear genes encoding plastid-localized enzymes participating in chlorophyll biosynthesis. Their defects ranged from complete loss of the cytb6/f complex to point mutations affecting specifically the quinone-binding QO site. In these seven mutants, light induction of the tetrapyrrole biosynthetic genes was either abolished or strongly reduced. In contrast, a normal induction of chlorophyll biosynthesis genes was observed in mutants with defects in photosystem II, photosystem I, or plastocyanin, or in wild-type cells treated with 3-(3#4#-dichlorophenyl)-1,1-dimethylurea or ,5-dibromo-3-methyl-6-isopropyl benzoquinone. We conclude that the redox state of the plastoquinone pool does not control light induction of these chlorophyll biosynthetic genes. The signal that affects expression of the nuclear genes appears to solely depend on the integrity of the cytb6/f complex QO site. Since light induction of these genes in Chlamydomonas has recently been shown to involve the blue light receptor phototropin, the results suggest that cytb6/f activity regulates a plastid-derived factor required for their expression. This signaling pathway differs from that which regulates state transitions, since mutant stt7, lacking a protein kinase involved in phosphorylation of the lightharvesting complex II, was not altered in the expression of the chlorophyll biosynthetic genes. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shao, N. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Vallon, O. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Dent, R. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Niyogi, K.K. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Beck, C.F. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/file/d/1x1R9a9lzGRbWiSa9Cmk0zMUyJMdAsNrn/view?usp=drivesdk">https://drive.google.com/file/d/1x1R9a9lzGRbWiSa9Cmk0zMUyJMdAsNrn/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 |
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| Clasificación local | Ref1 | CICY | CICY | Documento préstamo interbibliotecario | 25.06.2025 | B-7955 | 25.06.2025 | 25.06.2025 | Documentos solicitados |