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- W1599242512 abstract "The expression of two cotton osmotin genes was evaluated in terms of the mRNA and protein expression patterns in response to chemical inducers such as ethylene, hydrogen peroxide, and sodium chloride. Reverse transcriptase-polymerase chain reactions (RT-PCR) indicated that osmotin mRNAs are expressed constitutively in root tissues of cotton plants, and that they are rapidly induced in leaf and stem tissues upon ethylene treatment. Real time RT-PCR indicated that osmotin transcript levels were induced 2 to 4 h after treatment with ethephon. The osmotin mRNA levels appear to increase 12 h after treatment, decrease, and then increase again. The osmotin protein expression patterns were analyzed in Western blot analyses using an anti-osmotin antibody preparation. A 24-KDa protein band was detected from cotton plants treated with the inducers. The 24-KDa osmotin proteins were induced 4 h after treatment with ethephon, while down-regulated 96 h after treatment. Multiple osmotin isoforms were observed to be induced in cotton plants upon treatment with ethephon by two-dimensional gel electrophoresis. One goal of this dissertation research was to genetically engineer two cotton osmotin genes to routinely overproduce their antifungal proteins in transgenic Arabidopsis and cotton plants as a natural defense against fungal infections, using co-cultivation with Agrobacterium tumefaciens cells harboring pCAMBIA 2301 vector constructs containing the osmotin genes. Many transgenic Arabidopsis and cotton plants were generated. However, genomic blotting analyses indicated the absence of the osmotin transgenes, but the presence of GUS genes from the vector cassette. Alkaline blot analyses of the vector DNAs from transformed Agrobacterium cells confirmed that an anomalous DNA structural rearrangement or aberrant recombination event probably occurred in the Agrobacterium cells, interdicting the integration of osmotin transgenes into the Arabidopsis and cotton plants. This research provides crucial baseline information on expression of cotton osmotin mRNAs and proteins." @default.
- W1599242512 created "2016-06-24" @default.
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- W1599242512 date "2007-05-01" @default.
- W1599242512 modified "2023-09-27" @default.
- W1599242512 title "Analysis of the Expression Profiles of Two Isoforms of the Antifungal Protein Osmotin from Gossypium hirsutum" @default.
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