Nutrition Metabolism Plays an Important Role in the Alternate Bearing of the Olive Tree (Olea europaea L.)
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Author
Turktas, Mine
Inal, Behcet
Okay, Sezer
Erkilic, Emine Gulden
Dundar, Ekrem
Hernández, Pilar
Dorado, G.
Unver, Turgay
Publisher
Public Library of ScienceDate
2013Subject
Cellular stress responsesOlive trees
Leaves
Metabolic processes
Drug metabolism
Fruits
Cell metabolism
Xenobiotic metabolism
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Show full item recordAbstract
The olive tree (Olea europaea L.) is widely known for its strong tendency for alternate bearing, which severely affects the
fruit yield from year to year. Microarray based gene expression analysis using RNA from olive samples (on-off years leaves
and ripe-unripe fruits) are particularly useful to understand the molecular mechanisms influencing the periodicity in the
olive tree. Thus, we carried out genome wide transcriptome analyses involving different organs and temporal stages of the
olive tree using the NimbleGen Array containing 136,628 oligonucleotide probe sets. Cluster analyses of the genes showed
that cDNAs originated from different organs could be sorted into separate groups. The nutritional control had a particularly
remarkable impact on the alternate bearing of olive, as shown by the differential expression of transcripts under different
temporal phases and organs. Additionally, hormonal control and flowering processes also played important roles in this
phenomenon. Our analyses provide further insights into the transcript changes between ’’on year’’ and ‘‘off year’’ leaves
along with the changes from unrpipe to ripe fruits, which shed light on the molecular mechanisms underlying the olive tree
alternate bearing. These findings have important implications for the breeding and agriculture of the olive tree and other
crops showing periodicity. To our knowledge, this is the first study reporting the development and use of an olive array to
document the gene expression profiling associated with the alternate bearing in olive tree.
Fuente
PLoS ONE 8(3): e59876 (2013)Versión del Editor
http://dx.doi.org/10.1371/journal.pone.0059876Related items
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