924 resultados para Lycopersicon hirsutum var. glabratum


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"Pokrokový list pro veřejné otázky."

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Özege, M. S. Eski harflerle,

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Mode of access: Internet.

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"July 1940."

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For additons see Corráles, Manuel E. Rectificaciones y adiciones á la obra "Cartagena y sus cercanías," del Señor José P. Urueta. Bogotá, 1887.

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Thesis (doctoral)--Universität Marbutrg, 1898.

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Thesis (Master's)--University of Washington, 2016-06

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We investigated the gene expression profiles of different members of the 1-aminocyclopropane-1-carboxilic acid (ACC) synthase (EC 4.4.1.14) gene family in broccoli (Brassica oleracea L. var. italica) during the post-harvest-induced senescence process. Using RT-PCR, three different cDNAs coding for ACC synthase (BROCACS1, BROCACS2 and BROCACS3) were amplified from floret tissue at the start of the senescence process. The three genes share relatively little homology, but have highly homologous sequences in Arabidopsis thaliana, and could be functionally related to these counterparts. Southern analyses suggest that BROCACS1 and BROCACS3 are present as single copy genes, while there are probably two copies of BROCACS2. All three genes showed different expression patterns: BROCACS1 is likely to be either wound - or mechanical stress-induced showing high transcript levels after harvesting, but no detectable expression afterwards. BROCACS2 shows steady expression throughout senescence, increasing at the latest stages, and BROCACS3 is almost undetectable until the final stages. Our results suggest that BROCACS1 could be required to initiate the senescence process, while BROCACS2 would be the main ACC synthase gene involved throughout the post-harvest-induced senescence. BROCACS3's expression pattern indicates that it is not directly involved in the initial stages of senescence, but in the final remobilization of cellular resources.

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Five candidate promoters were examined to determine their utility in directing immunogenic levels of expression of the C fragment from tetanus toxin in attenuated S. enterica used as an oral vaccine in mice. Promoters derived from the genes encoding the stringent starvation protein (sspA) from E. coli and S. enterica, but not ansB derived promoters, expressed immunogenic levels of C fragment from multi-copy plasmids in attenuated S. enterica in vivo and, following oral immunization, induced high titre specific anti-tetanus toxoid serum antibodies. We also demonstrate that not only the choice of promoter, replicon and growth conditions but also how expression constructs are assembled in the chosen plasmid is critical for the successful development of plasmid-based antigen delivery systems using attenuated S. enterica. In addition, the S. enterica sspA promoter is able to elicit anti-tetanus toxoid antibodies in mice when the psspA-tetC expression cassette is integrated in single copy on the S. enterica chromosome.