De novo transcriptome analyses of host-fungal interactions in oil palm (Elaeis guineensis Jacq.)

BMC Genomics
Chai-Ling HoChee-Choong Hoh

Abstract

Basal stem rot (BSR) is a fungal disease in oil palm (Elaeis guineensis Jacq.) which is caused by hemibiotrophic white rot fungi belonging to the Ganoderma genus. Molecular responses of oil palm to these pathogens are not well known although this information is crucial to strategize effective measures to eradicate BSR. In order to elucidate the molecular interactions between oil palm and G. boninense and its biocontrol fungus Trichoderma harzianum, we compared the root transcriptomes of untreated oil palm seedlings with those inoculated with G. boninense and T. harzianum, respectively. Differential gene expression analyses revealed that jasmonate (JA) and salicylate (SA) may act in an antagonistic manner in affecting the hormone biosynthesis, signaling, and downstream defense responses in G. boninense-treated oil palm roots. In addition, G. boninense may compete with the host to control disease symptom through the transcriptional regulation of ethylene (ET) biosynthesis, reactive oxygen species (ROS) production and scavenging. The strengthening of host cell walls and production of pathogenesis-related proteins as well as antifungal secondary metabolites in host plants, are among the important defense mechanisms deployed by oil ...Continue Reading

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Citations

Sep 30, 2016·Frontiers in Microbiology·Feng LiuXiong-Chang Ou
Mar 6, 2019·Scientific Reports·Nicole BrinkmannAndrea Polle

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Datasets Mentioned

BETA
PRJEB7252

Methods Mentioned

BETA
GTPase
RNA-seq
PCR

Software Mentioned

Blast2GO
BLASTX
REVIGO
DESeq
Oases assembler
tblastx
Velvet
Circos
Tophat
Bowtie

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