Construction of a cDNA Library of Vitis pseudoreticulata Native to China Inoculated with Uncinula necator and the Analysis of Potential Defence-related Expressed Sequence Tags (ESTs)

  • Y. Xu Key Laboratory of Horticulture Plant Germplasm Utilisation of the Ministry of Agriculture in Northwest China, Yangling, Shaanxi, 712100, People’s Republic of China Key Laboratory of Agricultural Molecular Biology of Shaanxi Province, Northwest A & F University, Yangling, Shaanxi, 712100, People’s Republic of China College of Horticulture, Northwest A & F University, Yangling, Shaanxi, 712100, People’s Republic of China.
  • Z. Zhu Key Laboratory of Horticulture Plant Germplasm Utilisation of the Ministry of Agriculture in Northwest China, Yangling, Shaanxi, 712100, People’s Republic of China Key Laboratory of Agricultural Molecular Biology of Shaanxi Province, Northwest A & F University, Yangling, Shaanxi, 712100, People’s Republic of China College of Horticulture, Northwest A & F University, Yangling, Shaanxi, 712100, People’s Republic of China.
  • Y. Xiao Key Laboratory of Horticulture Plant Germplasm Utilisation of the Ministry of Agriculture in Northwest China, Yangling, Shaanxi, 712100, People’s Republic of China Key Laboratory of Agricultural Molecular Biology of Shaanxi Province, Northwest A & F University, Yangling, Shaanxi, 712100, People’s Republic of China College of Horticulture, Northwest A & F University, Yangling, Shaanxi, 712100, People’s Republic of China.
  • Y. Wang Key Laboratory of Horticulture Plant Germplasm Utilisation of the Ministry of Agriculture in Northwest China, Yangling, Shaanxi, 712100, People’s Republic of China Key Laboratory of Agricultural Molecular Biology of Shaanxi Province, Northwest A & F University, Yangling, Shaanxi, 712100, People’s Republic of China College of Horticulture, Northwest A & F University, Yangling, Shaanxi, 712100, People’s Republic of China.

Abstract

Expressed sequence tags (ESTs) constitute a rapid and informative strategy for studying the gene expression profiles
of specific stages of annual and perennial plant species. In the study undertaken for this report, a cDNA library was
constructed from the young leaves of Chinese wild Vitis pseudoreticulata inoculated with Uncinula necator (Schwein.)
Burrill. The leaves were harvested at various times after inoculation for total RNA extraction, which was used to
generate ESTs. In our study, 107 cDNA clones were sequenced from either the 5’ or 3’ end of the cDNAs. Of these,
60 unigenes (56.1%) were functionally characterised by the BLASTX matches to known-function proteins, and 20
unigenes (18.7%) matched significantly with proteins with unknown function in the public databases. The remaining
27 unigenes (25.2%) failed to show significant homology to any proteins in the public databases, suggesting that they
represented novel sequences. Some functional genes identified from the cDNA library and their potential with plant
defence system is discussed.

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Published
2016-12-12
Section
Articles