Light-dark regulation of carotenoid biosynthesis in pepper (Capsicum annuum)leaves (Record no. 47839)

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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625153926.0
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-13641
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245 10 - TITLE STATEMENT
Title Light-dark regulation of carotenoid biosynthesis in pepper (Capsicum annuum)leaves
490 0# - SERIES STATEMENT
Volume/sequential designation J. Plant Physiol., 160, p.439-443, 2003
520 3# - SUMMARY, ETC.
Summary, etc. The carotenoid content in photosynthetic plant tissue reflects a steady state value resulting from permanent biosynthesis and concurrent photo-oxidation. The contributions of both reactions were determined in illuminated pepper leaves. The amount of carotenoids provided by biosynthesis were quantified by the accumulation of the colourless carotenoid phytoene in the presence of the inhibitor norflurazon. When applied, substantial amounts of this rather photo-stable intermediate were formed in the light. However, carotenoid biosynthesis was completely stalled in darkness. This switch off in the absence of light is related to the presence of very low messenger levels of the phytoene synthase gene, psy and the phytoene desaturase gene, pds. Other carotenogenic genes, such as zds, ptox and lcy-b also were shown to be down-regulated to some extent. By comparison of the carotenoid concentration before and after transfer of plants to increasing light intensities and accounting for the contribution of biosynthesis, the rate of photo-oxidation was estimated for pepper leaves. It could be demonstrated that light-independent degradation or conversion of carotenoids e.g. to abscisic acid is a minor process.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CAROTENOID BIOSYNTHESIS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element LIGHT REGULATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PHOTODEGRADATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PHYTOENE DESATURASE MESSENGER
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PHYTOENE SYNTHASE MESSENGER
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Simkin, A.J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zhu, C.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Kuntz, M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Sandmann, G.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1tXm8G6BRMUwEQGKrKrrQiYDFLMSTSEhv/view?usp=drivesdk">https://drive.google.com/file/d/1tXm8G6BRMUwEQGKrKrrQiYDFLMSTSEhv/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-13641 25.06.2025 25.06.2025 Documentos solicitados