Ruby Orange Developing Seed cDNA Library UCRCS09

Vector: Lambda Uni-ZAP XR, excised phagemid; Site_1: EcoRI; Site_2: XhoI; Two trees with open-pollinated flowers in a mixed planting in the UC Riverside Citrus Variety Collection were the source of tissue. Developing seeds were collected by Federici (Roose lab) from May-July 2003. This included nine stages, based on size of fruit: 10-20 mm, 20-30 mm, 30-35 mm, 35-40 mm, 40-45 mm, 45-50 mm, 50-55 mm, 55-60 mm, 60-65 mm. Tissues were stored in RNA Later (Ambion) until further processing. Fenton (Close lab) purified RNA by the phenol method described in J. Japanese Soc. Hort. Sci. 1996. 64 (4):809-814, purified poly(A) mRNA using an Oligotex mRNA Kit (Qiagen), produced a primary cDNA library using a lambda ZAP XR cDNA Synthesis Kit (Stratagene), then mass-excised 0.48 million pfu from the primary library to produce a phagemid population. The library was made from equal portions of RNA from seed at each of the nine fruit stages, but seeds were not of uniform size at any stage. Phagemids were plated, plasmid DNA purified, cDNA clones archived, and DNA sequences determined bi-directionally using an ABI3730 at DNA Landmarks (Landry, Hubert, Laforest, Landry, Ligonde). Chromatogram files were downloaded by FTP by Close, then processed by Wanamaker (Close lab) using the HarvEST pipeline (http://harvest.ucr.edu) to remove vector and cloning oligo sequences and various contaminants, and to trim to a high quality region. Sequences that retained a phred 17 region of at least 100 bases were assembled, then chimeras were removed following manual inspection of assemblies (Close, Roose, Federici, Wanamaker, Lyon, Ye, Jang, Collin, Kacar, Ikeda, Quinitio). Sequences that survived all removal steps were submitted to GenBank.