1. Ileal Transcriptome Profiles of Japanese Quail Divergent in Phosphorus Utilization.
- Author
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Oster M, Reyer H, Trakooljul N, Weber FM, Xi L, Muráni E, Ponsuksili S, Rodehutscord M, Bennewitz J, and Wimmers K
- Subjects
- 6-Phytase metabolism, Animals, Chromosome Mapping, Coturnix genetics, Diet veterinary, Energy Metabolism, Gene Ontology, Ileum metabolism, Japan, Mitochondria metabolism, Principal Component Analysis, Quail metabolism, RNA chemistry, RNA isolation & purification, RNA metabolism, Phosphorus metabolism, Quail genetics, Transcriptome
- Abstract
Phosphorus (P) is an essential component for all living beings. Low P diets prompt phenotypic and molecular adaptations to maintain P homeostasis and increase P utilization (PU). Knowledge of the molecular mechanisms of PU is needed to enable targeted approaches to improve PU efficiency and thus lower P excretion in animal husbandry. In a previous population study, Japanese quail were subjected to a low P diet lacking mineral P and exogenous phytase. Individual PU was determined based on total P intake and excretion. A subset of 20 extreme siblings discordant for PU was selected to retrieve gene expression patterns of ileum ( n = 10 per PU group). Sequencing reads have been successfully mapped to the current Coturnix japonica reference genome with an average mapping rate of 86%. In total, 640 genes were found to be differentially abundant between the low and high PU groups (false discovery rate ≤ 0.05). Transcriptional patterns suggest a link between improved PU and mitochondrial energy metabolism, accelerated cell proliferation of enterocytes, and gut integrity. In assessing indicators of the efficient use of macro- and micronutrients, further research on turnover and proliferation rates of intestinal cells could provide an approach to improve P efficiency in poultry species.
- Published
- 2020
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