PMID- 28637447 OWN - NLM STAT- MEDLINE DCOM- 20180219 LR - 20181113 IS - 1471-2164 (Electronic) IS - 1471-2164 (Linking) VI - 18 IP - 1 DP - 2017 Jun 21 TI - Differential gene expression at different stages of mesocarp development in high- and low-yielding oil palm. PG - 470 LID - 10.1186/s12864-017-3855-7 [doi] LID - 470 AB - BACKGROUND: The oil yield trait of oil palm is expected to involve multiple genes, environmental influences and interactions. Many of the underlying mechanisms that contribute to oil yield are still poorly understood. In this study, we used a microarray approach to study the gene expression profiles of mesocarp tissue at different developmental stages, comparing genetically related high- and low- oil yielding palms to identify genes that contributed to the higher oil-yielding palm and might contribute to the wider genetic improvement of oil palm breeding populations. RESULTS: A total of 3412 (2001 annotated) gene candidates were found to be significantly differentially expressed between high- and low-yielding palms at at least one of the different stages of mesocarp development evaluated. Gene Ontologies (GO) enrichment analysis identified 28 significantly enriched GO terms, including regulation of transcription, fatty acid biosynthesis and metabolic processes. These differentially expressed genes comprise several transcription factors, such as, bHLH, Dof zinc finger proteins and MADS box proteins. Several genes involved in glycolysis, TCA, and fatty acid biosynthesis pathways were also found up-regulated in high-yielding oil palm, among them; pyruvate dehydrogenase E1 component Subunit Beta (PDH), ATP-citrate lyase, beta- ketoacyl-ACP synthases I (KAS I), beta- ketoacyl-ACP synthases III (KAS III) and ketoacyl-ACP reductase (KAR). Sucrose metabolism-related genes such as Invertase, Sucrose Synthase 2 and Sucrose Phosphatase 2 were found to be down-regulated in high-yielding oil palms, compared to the lower yield palms. CONCLUSIONS: Our findings indicate that a higher carbon flux (channeled through down-regulation of the Sucrose Synthase 2 pathway) was being utilized by up-regulated genes involved in glycolysis, TCA and fatty acid biosynthesis leading to enhanced oil production in the high-yielding oil palm. These findings are an important stepping stone to understand the processes that lead to production of high-yielding oil palms and have implications for breeding to maximize oil production. FAU - Wong, Yick Ching AU - Wong YC AUID- ORCID: 0000-0002-4558-6530 AD - Sime Darby Technology Centre Sdn Bhd, 1st Floor, Block B, UPM-MTDC Technology Centre III, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. wong.yick.ching@simedarby.com. FAU - Teh, Huey Fang AU - Teh HF AD - Sime Darby Technology Centre Sdn Bhd, 1st Floor, Block B, UPM-MTDC Technology Centre III, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. FAU - Mebus, Katharina AU - Mebus K AD - Centre for Research in Biotechnology for Agriculture (CEBAR), Level 3, Institute of Research Management & Monitoring (IPPP), Research Management & Innovation Comlex, University of Malaya, 50603, Kuala Lumpur, Malaysia. FAU - Ooi, Tony Eng Keong AU - Ooi TEK AD - Sime Darby Technology Centre Sdn Bhd, 1st Floor, Block B, UPM-MTDC Technology Centre III, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. FAU - Kwong, Qi Bin AU - Kwong QB AD - Sime Darby Technology Centre Sdn Bhd, 1st Floor, Block B, UPM-MTDC Technology Centre III, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. FAU - Koo, Ka Loo AU - Koo KL AD - Sime Darby Technology Centre Sdn Bhd, 1st Floor, Block B, UPM-MTDC Technology Centre III, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. FAU - Ong, Chuang Kee AU - Ong CK AD - European Bioinformatics Institute, Welcome Trust Genome Campus, Hinxton, Cambridgeshire, CB10 1SD, UK. FAU - Mayes, Sean AU - Mayes S AD - Plant and Crop Sciences, Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK. FAU - Chew, Fook Tim AU - Chew FT AD - Department of Biological Sciences, Faculty of Science, National University of Singapore, off Lower Kent Ridge Road, Singapore, 117543, Singapore. FAU - Appleton, David R AU - Appleton DR AD - Sime Darby Technology Centre Sdn Bhd, 1st Floor, Block B, UPM-MTDC Technology Centre III, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. FAU - Kulaveerasingam, Harikrishna AU - Kulaveerasingam H AD - Sime Darby Technology Centre Sdn Bhd, 1st Floor, Block B, UPM-MTDC Technology Centre III, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170621 PL - England TA - BMC Genomics JT - BMC genomics JID - 100965258 RN - 0 (Fatty Acids) RN - 0 (Transcription Factors) SB - IM MH - Arecaceae/*genetics/*growth & development MH - Citric Acid Cycle/genetics MH - Fatty Acids/biosynthesis MH - Fruit/*genetics/*growth & development MH - *Gene Expression Profiling MH - Glycolysis/genetics MH - Lipid Metabolism/genetics MH - Transcription Factors/genetics PMC - PMC5480177 OTO - NOTNLM OT - Elaeis guineensis OT - Expression microarray OT - Gene expression OT - Oil palm OT - Oil yield EDAT- 2017/06/24 06:00 MHDA- 2018/02/20 06:00 PMCR- 2017/06/21 CRDT- 2017/06/23 06:00 PHST- 2016/11/29 00:00 [received] PHST- 2017/06/09 00:00 [accepted] PHST- 2017/06/23 06:00 [entrez] PHST- 2017/06/24 06:00 [pubmed] PHST- 2018/02/20 06:00 [medline] PHST- 2017/06/21 00:00 [pmc-release] AID - 10.1186/s12864-017-3855-7 [pii] AID - 3855 [pii] AID - 10.1186/s12864-017-3855-7 [doi] PST - epublish SO - BMC Genomics. 2017 Jun 21;18(1):470. doi: 10.1186/s12864-017-3855-7.