Identification of heat shock proteins via transcriptome profiling of tree peony leaf exposed to high temperature.
The tree peony leaf is an important vegetative organ that is sensitive to abiotic stress and particularly to high temperature. This sensitivity affects plant growth and restricts tree peony distribution. However, the transcriptomic information currently available on the peony leaf in public databases is limited. In this study, we sequenced the transcriptomes of peony leaves subjected to high temperature using the Illumina HiSeq TM 2000 platform. We performed de novo assembly of 93,714 unigenes (average length of 639.7 bp). By searching the public databases, 22,323 unigenes and 13,107 unigenes showed significant similarities with proteins in the NCBI non-redundant protein database and SWISS-PROT database (E-value < 1e-5), respectively. We assigned 17,340 unigenes to Gene Ontology categories, and we assigned 7618 unigenes to clusters of orthologous groups for eukaryotic complete genomes. By searching the Kyoto Encyclopedia of Genes and Genomes Pathway database, 8014 unigenes were assigned to 6 main categories, including 290 KEGG pathways. To advance research on improving thermotolerance, we identified 24 potential heat shock protein genes with complete open reading frames from the transcriptomic sequences. This is the first study to characterize the leaf transcriptome of tree peony leaf using high-throughput sequencing. The information obtained from the tree peony leaf is valuable for gene discovery, and the identified heat shock protein genes can be used to improve plant stress-tolerance.
Life Science Department, Luoyang Normal University, Luoyang, China.
Y Z
YZ
Zhang
Life Science Department, Luoyang Normal University, Luoyang, China.
Y W
YW
Cheng
Life Science Department, Luoyang Normal University, Luoyang, China.
H Y
HY
Ya
Life Science Department, Luoyang Normal University, Luoyang, China.
J M
JM
Han
Life Science Department, Luoyang Normal University, Luoyang, China.
L
L
Zheng
D030561:Databases, Nucleic Acid; D030562:Databases, Protein; D020869:Gene Expression Profiling; D006360:Heat-Shock Proteins / Q000235:genetics*; D059014:High-Throughput Nucleotide Sequencing / Q000379:methods; D018895:Microsatellite Repeats; D058977:Molecular Sequence Annotation; D029596:Paeonia / Q000235:genetics*; D018515:Plant Leaves / Q000235:genetics; D013696:Temperature
D006360:Heat-Shock Proteins