Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba

Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba

Neolamarckia cadamba, or locally known as Kelampayan is one of the indigenous tree species that are selected for forest plantation establishment in Sarawak due to the high productivity and short rotation time of this species. Understanding the structure and composition of Kelampayan wood through...

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Main Author: Tchin, Boon Ling
Format: Thesis
Language:English
English
Published: University Malaysia Sarawak, UNIMAS 2013
Subjects:
QH Natural history
Online Access:http://ir.unimas.my/9385/
http://ir.unimas.my/9385/1/GENE-ASSOCIATED%20SNP%20DISCOVERY%20AND%20MOLECULAR%20CLONING%20OF%20FULL-LENGHTcDNA%20OF%20CINNAMATE%204-HYDROXYLASE%20AND%20CINNAMYL%20ALCOHOL%20DEHTDROGENASE%20IN%20A%20TROPICAL%20TIMBER%20TREE%20Neolamarckia%20cadamba%20%2824%20pages%29.pdf
http://ir.unimas.my/9385/2/Gene-Associated%20SNP%20Discovery%20and%20Molecular%20Cloning%20of%20Full-Length%20cDNA%20of%20Cinnamate%204-Hydroxylase%20and%20Cinnamyl%20Alcohol%20Dehydrogenase%20In%20A%20Tropical%20Timber%20Tree%20Neolamarckia%20cadamba.pdf
id unimas-9385
recordtype eprints
spelling unimas-93852015-11-04T02:53:12Z http://ir.unimas.my/9385/ Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba Tchin, Boon Ling QH Natural history Neolamarckia cadamba, or locally known as Kelampayan is one of the indigenous tree species that are selected for forest plantation establishment in Sarawak due to the high productivity and short rotation time of this species. Understanding the structure and composition of Kelampayan wood through genome integration is vital to better utilize this wood material. Concurrently, the Kelampayan wood formation genomic resource database, aka Cadamomics (10,368 ESTs) has been developed, and this opens the gateway for researchers to deeply explore the genomic basic of Kelampayan. EST database is a useful resource for gene discovery. Further analysis on this database generated two full-length lignin biosynthesis genes, namely C4H and CAD. Validation by RT-PCR and full-length gene specific primers had confirmed the identities of the genes discovered. The full-length C4H cDNA, designated as NcC4H is 1,651 bp long, with a 1,518 bp open reading frame encoding a protein of 505 amino acids, a 18 bp 5’-UTR and a 115 bp 3’-UTR. The NcC4H showed higher identity with the class I C4Hs, which is preferentially involved in the phenylpropanoid biosynthesis pathway. Meanwhile, sequence analysis of the full-length CAD cDNA, designated as NcCAD, showed that it is 1,240 bp long with a 1,086 bp open reading frame encoding a protein of 361 amino acids, a 68 bp 5’-UTR and a 86 bp 3’-UTR. Phylogenetic analysis revealed that NcCAD was grouped in the cluster containing both CAD and SAD genes, in which both genes were involved in lignin biosynthesis. The full-length NcC4H and NcCAD cDNA identified serve as good candidate genes for association genetics studies in Kelampayan. Association genetics study is a powerful approach to detect potential genetic variants, i.e. SNPs, underlying the common and complex adaptive traits. Thus far, single nucleotide polymorphisms (SNPs) detected in C4H and CAD genes were known to be correlated with some other phenotypic variations in forest tree species rather than with lignin production only. Hence, attempts were made to discover SNPs from the partial C4H and CAD genomic DNA sequences. Overlapping primers were designed to flank the partial C4H and CAD DNA from 12 Kelampayan samples. The amplified DNA fragments were cloned and sent for sequencing. Furthermore, wood cores were collected and the basic wood density was measured for each tree. Sequence variation analysis revealed that there were 60 and 32 SNPs detected in the partial C4H and CAD DNA sequences, respectively. The SNPs detected were distributed throughout the exon, intron, 5’-UTR and 3’-UTR regions. Among the SNPs detected in the exon regions of C4H, 16 were synonymous mutations and eight were nonsynonymous mutations. For CAD, six SNPs lead to synonymous mutations and one SNP lead to nonsynonymous mutation. Synonymous mutations (71 %) were more common than nonsynonymous mutations (29 %) for both the C4H and CAD genes. Association genetics studies also revealed that four and six SNPs from the C4H and CAD genes respectively were significantly associated with the basic wood density of Kelampayan (p<0.05). Genetic variations identified by the SNP markers, once validated, will facilitate the selection of Kelampayan parental lines or seedlings with optimal quality through the gene-assisted selection (GAS) approach. University Malaysia Sarawak, UNIMAS 2013 Thesis NonPeerReviewed text en http://ir.unimas.my/9385/1/GENE-ASSOCIATED%20SNP%20DISCOVERY%20AND%20MOLECULAR%20CLONING%20OF%20FULL-LENGHTcDNA%20OF%20CINNAMATE%204-HYDROXYLASE%20AND%20CINNAMYL%20ALCOHOL%20DEHTDROGENASE%20IN%20A%20TROPICAL%20TIMBER%20TREE%20Neolamarckia%20cadamba%20%2824%20pages%29.pdf text en http://ir.unimas.my/9385/2/Gene-Associated%20SNP%20Discovery%20and%20Molecular%20Cloning%20of%20Full-Length%20cDNA%20of%20Cinnamate%204-Hydroxylase%20and%20Cinnamyl%20Alcohol%20Dehydrogenase%20In%20A%20Tropical%20Timber%20Tree%20Neolamarckia%20cadamba.pdf Tchin, Boon Ling (2013) Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba. Masters thesis, University Malaysia Sarawak, UNIMAS.
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Sarawak
building UNIMAS Institutional Repository
collection Online Access
language English
English
topic QH Natural history
spellingShingle QH Natural history
Tchin, Boon Ling
Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba
description Neolamarckia cadamba, or locally known as Kelampayan is one of the indigenous tree species that are selected for forest plantation establishment in Sarawak due to the high productivity and short rotation time of this species. Understanding the structure and composition of Kelampayan wood through genome integration is vital to better utilize this wood material. Concurrently, the Kelampayan wood formation genomic resource database, aka Cadamomics (10,368 ESTs) has been developed, and this opens the gateway for researchers to deeply explore the genomic basic of Kelampayan. EST database is a useful resource for gene discovery. Further analysis on this database generated two full-length lignin biosynthesis genes, namely C4H and CAD. Validation by RT-PCR and full-length gene specific primers had confirmed the identities of the genes discovered. The full-length C4H cDNA, designated as NcC4H is 1,651 bp long, with a 1,518 bp open reading frame encoding a protein of 505 amino acids, a 18 bp 5’-UTR and a 115 bp 3’-UTR. The NcC4H showed higher identity with the class I C4Hs, which is preferentially involved in the phenylpropanoid biosynthesis pathway. Meanwhile, sequence analysis of the full-length CAD cDNA, designated as NcCAD, showed that it is 1,240 bp long with a 1,086 bp open reading frame encoding a protein of 361 amino acids, a 68 bp 5’-UTR and a 86 bp 3’-UTR. Phylogenetic analysis revealed that NcCAD was grouped in the cluster containing both CAD and SAD genes, in which both genes were involved in lignin biosynthesis. The full-length NcC4H and NcCAD cDNA identified serve as good candidate genes for association genetics studies in Kelampayan. Association genetics study is a powerful approach to detect potential genetic variants, i.e. SNPs, underlying the common and complex adaptive traits. Thus far, single nucleotide polymorphisms (SNPs) detected in C4H and CAD genes were known to be correlated with some other phenotypic variations in forest tree species rather than with lignin production only. Hence, attempts were made to discover SNPs from the partial C4H and CAD genomic DNA sequences. Overlapping primers were designed to flank the partial C4H and CAD DNA from 12 Kelampayan samples. The amplified DNA fragments were cloned and sent for sequencing. Furthermore, wood cores were collected and the basic wood density was measured for each tree. Sequence variation analysis revealed that there were 60 and 32 SNPs detected in the partial C4H and CAD DNA sequences, respectively. The SNPs detected were distributed throughout the exon, intron, 5’-UTR and 3’-UTR regions. Among the SNPs detected in the exon regions of C4H, 16 were synonymous mutations and eight were nonsynonymous mutations. For CAD, six SNPs lead to synonymous mutations and one SNP lead to nonsynonymous mutation. Synonymous mutations (71 %) were more common than nonsynonymous mutations (29 %) for both the C4H and CAD genes. Association genetics studies also revealed that four and six SNPs from the C4H and CAD genes respectively were significantly associated with the basic wood density of Kelampayan (p<0.05). Genetic variations identified by the SNP markers, once validated, will facilitate the selection of Kelampayan parental lines or seedlings with optimal quality through the gene-assisted selection (GAS) approach.
format Thesis
author Tchin, Boon Ling
author_facet Tchin, Boon Ling
author_sort Tchin, Boon Ling
title Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba
title_short Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba
title_full Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba
title_fullStr Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba
title_full_unstemmed Gene-Associated snp discovery and molecular cloning of full-length cDNA of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree Neolamarckia cadamba TREE Neolamarckia cadamba
title_sort gene-associated snp discovery and molecular cloning of full-length cdna of cinnamate 4-hydroxylase and cinnamy alcohol dehydrogenase in a tropical timber tree neolamarckia cadamba tree neolamarckia cadamba
publisher University Malaysia Sarawak, UNIMAS
publishDate 2013
url http://ir.unimas.my/9385/
http://ir.unimas.my/9385/1/GENE-ASSOCIATED%20SNP%20DISCOVERY%20AND%20MOLECULAR%20CLONING%20OF%20FULL-LENGHTcDNA%20OF%20CINNAMATE%204-HYDROXYLASE%20AND%20CINNAMYL%20ALCOHOL%20DEHTDROGENASE%20IN%20A%20TROPICAL%20TIMBER%20TREE%20Neolamarckia%20cadamba%20%2824%20pages%29.pdf
http://ir.unimas.my/9385/2/Gene-Associated%20SNP%20Discovery%20and%20Molecular%20Cloning%20of%20Full-Length%20cDNA%20of%20Cinnamate%204-Hydroxylase%20and%20Cinnamyl%20Alcohol%20Dehydrogenase%20In%20A%20Tropical%20Timber%20Tree%20Neolamarckia%20cadamba.pdf
first_indexed 2018-09-06T15:39:27Z
last_indexed 2018-09-06T15:39:27Z
_version_ 1610873168661053440

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