Transcriptome analyses of tapping panel dryness (TPD) in Hevea brasiliensis treated with latex stimulant RRIM hydrobest„

Ahmad Zulhilmi Nazri, . Transcriptome analyses of tapping panel dryness (TPD) in Hevea brasiliensis treated with latex stimulant RRIM hydrobest„. pp. 13-26. ISSN 1985-0484

The problem of tapping panel dryness (TPD) that renders the rubber tree non-yielding has been in the industry for over 100 years. Many studies have been done on TPD however the exact mechanisms remain speculative until today while a definitive cure for the disorder remains unavailable. Recently a newly developed latex stimulant RRIM HYDROBEST„ has been shown not only to increase latex production but also to reduce the TPD incidence. In order to reveal both TPD and also RRIM HYDROBEST„ mechanisms transcriptome of latex between three groups (healthy TPD and TPD with RRIM HYDROBEST„) were obtained and compared. The differential expression analysis found 20 678 and 577 statistically significant differentially expressed genes (DEGs) when comparing TPD versus Control (Comp1) TPD treated with RRIM HYDROBEST„ versus Control (Comp2) TPD with RRIM HYDROBEST„ versus TPD (Comp3) respectively. The enrichment tests retrieved a total of 119 2 264 and 2 179 GO terms and 0 24 and 24 pathways which might be associated with the three transcriptome profilings Comp1 Comp2 and Comp3 respectively. Most significantly enriched KEGG pathways included alanine aspartate and glutamate metabolism taurine and hypotaurine metabolism nitrogen metabolism flavone and flavanol biosynthesis and glycosaminoglycan degradation. The transcriptional responses of latex rubber tree to the TPD and RRIM HYDROBEST„ were determined and a large number of DEGs were characterised providing important clues for further elucidation of the mechanisms of TPD stress response and RRIM HYDROBEST„ effect in rubber tree.

Full text available from: Official URL: http://www.jtpp.org.my/volume/12_1/vol12_1_article...

Abstract

The problem of tapping panel dryness (TPD) that renders the rubber tree non-yielding has been in the industry for over 100 years. Many studies have been done on TPD however the exact mechanisms remain speculative until today while a definitive cure for the disorder remains unavailable. Recently a newly developed latex stimulant RRIM HYDROBEST„ has been shown not only to increase latex production but also to reduce the TPD incidence. In order to reveal both TPD and also RRIM HYDROBEST„ mechanisms transcriptome of latex between three groups (healthy TPD and TPD with RRIM HYDROBEST„) were obtained and compared. The differential expression analysis found 20 678 and 577 statistically significant differentially expressed genes (DEGs) when comparing TPD versus Control (Comp1) TPD treated with RRIM HYDROBEST„ versus Control (Comp2) TPD with RRIM HYDROBEST„ versus TPD (Comp3) respectively. The enrichment tests retrieved a total of 119 2 264 and 2 179 GO terms and 0 24 and 24 pathways which might be associated with the three transcriptome profilings Comp1 Comp2 and Comp3 respectively. Most significantly enriched KEGG pathways included alanine aspartate and glutamate metabolism taurine and hypotaurine metabolism nitrogen metabolism flavone and flavanol biosynthesis and glycosaminoglycan degradation. The transcriptional responses of latex rubber tree to the TPD and RRIM HYDROBEST„ were determined and a large number of DEGs were characterised providing important clues for further elucidation of the mechanisms of TPD stress response and RRIM HYDROBEST„ effect in rubber tree.

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Item Type:	Article
AGROVOC Term:	Hevea brasiliensis
AGROVOC Term:	Rubber
AGROVOC Term:	Tapping
AGROVOC Term:	Susceptibility to dryness
AGROVOC Term:	Latex
AGROVOC Term:	Oxidative stress
AGROVOC Term:	Experimental design
AGROVOC Term:	Sampling
AGROVOC Term:	Mapping
AGROVOC Term:	Stimulation
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/9100

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