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Molecular Physiology of Teak

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The Teak Genome

Part of the book series: Compendium of Plant Genomes ((CPG))

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Abstract

Teak (Tectona grandis Linn F.) is a fast-growing deciduous tree. It has a wide geographic distribution in the tropical and subtropical regions of Asia, Africa, South America, and Central America. Its wood is highly priced for its quality, profile, and durability. Therefore, foresters seek to improve growth, reduce crop rotation, and obtain trees that are well adapted to their environment. For this reason, it is important to understand the mechanisms of genetic regulation in the biosynthesis of cellulose, hemicellulose and lignin, and biomolecules that represent the majority of plant biomass. To determine which genes are related to the transcriptional regulation of xylogenesis and abiotic stress in Tectona grandis, the primary structure of 17 differentially expressed transcription factors (TFs) was analyzed using the Information Spectrum Method. The data showed that it occurs as a physical interaction between the TgGATA1 and TgHSP1 TFs, in which TgGATA1 could possibly be an enhancer of the transcriptional regulation of TgHSP1 and acts in response to high light intensity and heat adaptation. Likewise, both of them could be related to the secondary xylem protection under stress conditions. Besides, the physical interaction between the TgNAC2 and TgMYB3 TFs could be involved in the transcriptional regulation of gene members belonging to the phenylpropanoid pathway under abiotic stress. Finally, these genes could play a fundamental role in the organization and development of the distinct parts that constitute the secondary xylem, cell wall, and sapwood. Consequently, it is possible that stress responses are integrated into a large gene regulatory network that determines the specification and differentiation of xylem cells in T. grandis.

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Correspondence to Vladimir Camel .

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Camel, V., Galeano, E. (2021). Molecular Physiology of Teak. In: Ramasamy, Y., Galeano, E., Win, T.T. (eds) The Teak Genome. Compendium of Plant Genomes. Springer, Cham. https://doi.org/10.1007/978-3-030-79311-1_14

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