Heightened Levels of Lignin and Flavonoids Coupled with the Absence in Sulfate-Reducing Bacteria Influencing the Non-Trunking Phenotype in Sago Palms (Metroxylon sagu Rottb.)
Metroxylon sagu Rottb. is an important economic commodity crop in Sarawak, Malaysia. High demand for sago starch has initiated the state’s government to introduce sago palm cultivation to meet both local and overseas needs. Some plantations reported dwarf (non-trunking) sago palms after ten years...
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| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Book Chapter |
| Language: | en |
| Published: |
Persatuan Genetik Malaysia
2025
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/50534/1/Pendi%20etal%202025%20TPGM13-004.pdf http://ir.unimas.my/id/eprint/50534/ https://www.pgm-my.org/book/2023-transactions-of-pgm-number-12/ |
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| Summary: | Metroxylon sagu Rottb. is an important economic commodity crop in Sarawak, Malaysia. High demand for sago
starch has initiated the state’s government to introduce sago palm cultivation to meet both local and overseas
needs. Some plantations reported dwarf (non-trunking) sago palms after ten years of cultivation. Several studies
have been conducted to address this matter, however, the biological mechanism underlying this problem is still
scarce. In addition, information on soil properties at sago palm plantation is also limited. This study aims to
identify the enriched genes and enzymatic pathways expressed in non-trunking and to differentiate microbial
taxonomy present in both trunking and non-trunking soil environments. Transcriptome sequencing on Illumina
NovaSeq 6000 platform with DESeq2 analysis revealed a total of 2158 differentially expressed genes between
trunking and non-trunking datasets with 1353 DEGs were upregulated and 805 DEGs were downregulated.
KEGG pathways enrichment revealed phenylpropanoid and flavonoid biosynthesis were significantly
upregulated suggesting heightened lignin and flavonoid synthesis in non-trunking sago palms. Soil taxonomy
datasets sequenced with 16S and ITS1 on Illumina MiSeq platform revealed Acidobacteria, Proteobacteria, and
Actinobacteria were dominant bacterial phyla in trunking sago palm rhizosphere whilst phylum Ascomycota
dominates both sampling sites. These comparative analyses will provide insight into the transcriptome of
trunking and non-trunking palms and the associated taxonomic community composition in sago palms cultivated
in peat soil. |
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