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10.3390/genes11010020
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Article

Analysis of NAC Domain Transcription Factor Genes of Tectona grandis L.f. Involved in Secondary Cell Wall Deposition

by
Fernando Manuel Matias Hurtado
1,†,
Maísa de Siqueira Pinto
1,†,
Perla Novais de Oliveira
1,
Diego Mauricio Riaño-Pachón
2,
Laura Beatriz Inocente
1 and
Helaine Carrer
1,*
1
Department of Biological Sciences, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo, Av. Pádua Dias, 11, CP 9, Piracicaba, SP 13418-900, Brazil
2
Computational, Evolutionary and Systems Biology Laboratory, Center for Nuclear Energy in Agriculture (CENA), University of São Paulo. Av. Centenário 303, Piracicaba, SP 13416-000, Brazil
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Genes 2020, 11(1), 20; https://doi.org/10.3390/genes11010020
Submission received: 8 November 2019 / Revised: 15 December 2019 / Accepted: 17 December 2019 / Published: 23 December 2019
(This article belongs to the Special Issue Molecular Biology of Secondary Growth)
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Abstract

NAC proteins are one of the largest families of plant-specific transcription factors (TFs). They regulate diverse complex biological processes, including secondary xylem differentiation and wood formation. Recent genomic and transcriptomic studies of Tectona grandis L.f. (teak), one of the most valuable hardwood trees in the world, have allowed identification and analysis of developmental genes. In the present work, T. grandis NAC genes were identified and analyzed regarding to their evolution and expression profile during wood formation. We analyzed the recently published T. grandis genome, and identified 130 NAC proteins that are coded by 107 gene loci. These proteins were classified into 23 clades of the NAC family, together with Populus, Eucalyptus, and Arabidopsis. Data on transcript expression revealed specific temporal and spatial expression patterns for the majority of teak NAC genes. RT-PCR indicated expression of VND genes (Tg11g04450-VND2 and Tg15g08390-VND4) related to secondary cell wall formation in xylem vessels of 16-year-old juvenile trees. Our findings open a way to further understanding of NAC transcription factor genes in T. grandis wood biosynthesis, while they are potentially useful for future studies aiming to improve biomass and wood quality using biotechnological approaches.
Keywords: tropical tree; wood formation; secondary growth tropical tree; wood formation; secondary growth

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MDPI and ACS Style

Matias Hurtado, F.M.; Pinto, M.d.S.; Oliveira, P.N.d.; Riaño-Pachón, D.M.; Inocente, L.B.; Carrer, H. Analysis of NAC Domain Transcription Factor Genes of Tectona grandis L.f. Involved in Secondary Cell Wall Deposition. Genes 2020, 11, 20. https://doi.org/10.3390/genes11010020

AMA Style

Matias Hurtado FM, Pinto MdS, Oliveira PNd, Riaño-Pachón DM, Inocente LB, Carrer H. Analysis of NAC Domain Transcription Factor Genes of Tectona grandis L.f. Involved in Secondary Cell Wall Deposition. Genes. 2020; 11(1):20. https://doi.org/10.3390/genes11010020

Chicago/Turabian Style

Matias Hurtado, Fernando Manuel, Maísa de Siqueira Pinto, Perla Novais de Oliveira, Diego Mauricio Riaño-Pachón, Laura Beatriz Inocente, and Helaine Carrer. 2020. "Analysis of NAC Domain Transcription Factor Genes of Tectona grandis L.f. Involved in Secondary Cell Wall Deposition" Genes 11, no. 1: 20. https://doi.org/10.3390/genes11010020

APA Style

Matias Hurtado, F. M., Pinto, M. d. S., Oliveira, P. N. d., Riaño-Pachón, D. M., Inocente, L. B., & Carrer, H. (2020). Analysis of NAC Domain Transcription Factor Genes of Tectona grandis L.f. Involved in Secondary Cell Wall Deposition. Genes, 11(1), 20. https://doi.org/10.3390/genes11010020

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