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A tapetum-specific gene, RTS, has been isolated by differential screening of a cDNA library from rice panicles. RTS is a unique gene in the rice genome. RNA blot analysis and in situ hybridization indicates that this gene is predominantly expressed in the anther's tapetum during meiosis and disappears before anthesis. RTS has no introns and encodes a(More)
To play an essential role in C4 photosynthesis, the maize C4 phosphoenolpyruvate carboxylase gene (PPCZm1) acquired many new expression features, such as leaf specificity, mesophyll specificity, light inducibility and high activity, that distinguish the unique C4 PPC from numerous non-C4 PPC genes in maize. We present here the first investigation of the(More)
Genetic transformation of creeping bentgrass mediated by Agrobacterium tumefaciens has been achieved. Embryogenic callus initiated from seeds (cv. Penn-A-4) was infected with an A. tumefaciens strain (LBA4404) harboring a super-binary vector that contained an herbicide-resistant bar gene driven either by the CaMV 35S promoter or a rice ubiquitin promoter.(More)
Chimaeric genes can be constructed which fuse the transit peptide of a small subunit of the chloroplast-located ribulose 1,5-bisphosphate carboxylase with a bacterial protein. The fusion protein is translocated into chloroplasts and cleaved in a similar way to the small subunit polypeptide precursor.
Limitations in the current availability of bioenergy feed-stocks are a major problem in next-generation biofuels. There are global economic, political and environmental pressures to increase biofuel production and utilization, to offset gasoline and diesel fuel use, especially in the transportation sector. Many countries, such as the USA and China, have(More)
We have constructed a tomato genomic library in the gamma Charon 4 phage vector. The library was screened with a pea cDNA probe encoding a chlorophyll a/b-binding protein (CAB), and several recombinant phages containing tomato CAB genes were isolated and characterized by restriction mapping, heteroduplex analysis and nucleotide sequencing. Two phages with(More)
The feasibility of using the FLP/FRT site-specific recombination system in rice for genome engineering was evaluated. Transgenic rice plants expressing the FLP recombinase were crossed with plants harbouring the kanamycin resistance gene (neomycin phosphotransferase II, nptII) flanked by FRT sites, which also served to separate the corn ubiquitin promoter(More)
Transient expression profiles for several chimeric beta-glucuronidase (GUS) gene constructs were determined in tissues (young leaves, mature leaves and roots) of creeping bentgrass (Agrostis palustris, cv. Penn A4) following microprojectile bombardment. The constructs analyzed consisted of the uidA (GUS) reporter gene driven by four different promoters(More)
Longitudinal files of raphide crystal idioblasts form within the cortical meristematic region of Vanilla planifolia aerial roots. Cell and nuclear enlargement occur gradually throughout idioblast development and nuclear diameter approximates idioblast maturity. Cytophotometric determination of nuclear DNA (Feulgen) contents, measured by the two-wavelength(More)
Plant transformation has enabled fundamental insights into plant biology and revolutionized commercial agriculture. Unfortunately, for most crops, transformation and regeneration remain arduous even after more than 30 years of technological advances. Genome editing provides novel opportunities to enhance crop productivity but relies on genetic(More)