Gene structure and potential regulation of the lycopene cyclase genes in Bixa orellana L.

Autor: Rivero-Manzanilla G; Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, A.C. Calle 43 # 130, Chuburná de Hidalgo, 97205 Mérida, Yucatán Mexico., Narváez-Zapata JA; Instituto Politécnico Nacional - Centro de Biotecnología Genómica, Blvd Del Maestro esq. Elias Piña, 88710 Reynosa, Tamaulipas Mexico., Aguilar-Espinosa M; Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, A.C. Calle 43 # 130, Chuburná de Hidalgo, 97205 Mérida, Yucatán Mexico., Carballo-Uicab VM; Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, A.C. Calle 43 # 130, Chuburná de Hidalgo, 97205 Mérida, Yucatán Mexico., Rivera-Madrid R; Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, A.C. Calle 43 # 130, Chuburná de Hidalgo, 97205 Mérida, Yucatán Mexico.
Jazyk: angličtina
Zdroj: Physiology and molecular biology of plants : an international journal of functional plant biology [Physiol Mol Biol Plants] 2023 Oct; Vol. 29 (10), pp. 1423-1435. Date of Electronic Publication: 2023 Nov 13.
DOI: 10.1007/s12298-023-01384-8
Abstrakt: Lycopene cyclases (LCYs) are a key branching point in regulating the carotenoid biosynthesis pathway in plants. Bixa orellana L. is characterized by the presence in its seed of bixin, an apocarotenoid of significant importance in the food, pharmaceutical, and cosmetic industries. Gene analysis provides the opportunity to investigate the LCY gene structure in plant species and its relationship with the synthesis of carotenoids. Coding sequences of the LCY genes were retrieved from a B. orellana genome DNA. Boβ-LCY1 and Boβ-LCY2 genes exhibit 100% of identity to their respective cDNA accessions, and exhibit a single coding region of 1512 bp (504 aa) and 1495 bp (498 aa), respectively. In contrast, Boε-LCY gene shows a coding region of 1581 bp (527 aa) with 10 introns of diverse lengths. Putative Transcription Factors (TFs) binding sites were upstream (3000 bp) identified for each LCY gene. TFs cover two groups, one with the categories of photosynthesis, reproduction, and oxidative processes that are frequent. The second one with the categories of defense, cell cycle, signaling, and carbohydrate metabolism, which are poorly represented. Besides, repetitive DNA elements showed motifs and proteins related to LTR from the Ty3/Gypsy family, were associated with the TFs regions. In general, TFs vary in the different BoLCY genes, being more abundant in the Boε-LCY gene. LCY expression analyzed from a transcriptome database, and validated by RT-qPCR, shows an upregulation of the three LCYs , mainly oriented to the synthesis of essential carotenoids in photosynthetic tissues (leaves), as well as an upregulation of the Boβ-LCY2 gene in the non-photosynthetic tissues (firsts seed development stages) related to the bixin accumulation.
Supplementary Information: The online version contains supplementary material available at 10.1007/s12298-023-01384-8.
Competing Interests: Competing interestsAll the authors declare no conflict of interest.
(© Prof. H.S. Srivastava Foundation for Science and Society 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
Databáze: MEDLINE
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