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Cloning and Functional Analysis of Lignin Biosynthesis Genes Cf4CL and CfCCoAOMT in Cryptomeria fortunei

1,2,3,†, 1,2,3,†, 1,2,3,*, 1,2,3, 1,2,3 and 1,2,3
1
Key Laboratory of Forest Genetics & Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
2
Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing forestry University, Nanjing 210037, China
3
College of Forestry, Nanjing Forestry University, Nanjing 210037, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Genes 2019, 10(8), 619; https://doi.org/10.3390/genes10080619
Received: 4 July 2019 / Revised: 9 August 2019 / Accepted: 12 August 2019 / Published: 15 August 2019
(This article belongs to the Special Issue Molecular Biology of Secondary Growth)
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PDF [6103 KB, uploaded 19 August 2019]
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Abstract

Cryptomeria fortunei, also known as the Chinese cedar, is an important timber species in southern China. The primary component of its woody tissues is lignin, mainly present in secondary cell walls. Therefore, continuous lignin synthesis is crucial for wood formation. In this study, we aimed to discover key genes involved in lignin synthesis expressed in the vascular cambium of C. fortunei. Through transcriptome sequencing, we detected expression of two genes, 4CL and CCoAOMT, known to be homologous to enzymes involved in the lignin synthesis pathway. We studied the function of these genes through bioinformatics analysis, cloning, vascular cambium expression analysis, and transgenic cross-species functional validation studies. Our results show that Cf4CL and CfCCoAOMT do indeed function in the pathway of lignin synthesis and likely perform this function in C. fortunei. They are prime candidates for future (gene-editing) studies aimed at optimizing C. fortunei wood production. View Full-Text
Keywords: Cryptomeria fortunei; lignin synthetase; gene cloning; expression analysis; functional verification Cryptomeria fortunei; lignin synthetase; gene cloning; expression analysis; functional verification
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Guo, Z.; Hua, H.; Xu, J.; Mo, J.; Zhao, H.; Yang, J. Cloning and Functional Analysis of Lignin Biosynthesis Genes Cf4CL and CfCCoAOMT in Cryptomeria fortunei. Genes 2019, 10, 619.

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