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Full-Text Articles in Life Sciences

Duplicate Gene Expression In Allopolyploid Gossypium Reveals Two Temporally Distinct Phases Of Expression Evolution, Joshua Udall, Lex E. Flagel, Dan Nettleton, Jonathan F. Wendel Apr 2008

Duplicate Gene Expression In Allopolyploid Gossypium Reveals Two Temporally Distinct Phases Of Expression Evolution, Joshua Udall, Lex E. Flagel, Dan Nettleton, Jonathan F. Wendel

Faculty Publications

Polyploidy has played a prominent role in shaping the genomic architecture of the angiosperms. Through allopolyploidization, several modern Gossypium (cotton) species contain two divergent, although largely redundant genomes. Owing to this redundancy, these genomes can play host to an array of evolutionary processes that act on duplicate genes. Results- We compared homoeolog (genes duplicated by polyploidy) contributions to the transcriptome of a natural allopolyploid and a synthetic interspecific F1 hybrid, both derived from a merger between diploid species from the Gossypium A-genome and D-genome groups. Relative levels of A- and D-genome contributions to the petal transcriptome were determined for 1,383 …


Expression And Evolutionary Relationships Of The Chenopodium Quinoa 11s Seed Storage Protein Gene, Mikel Stevens, Peter J. Maughan, Daniel J. Fairbanks, Marie R. B. Balzotti, Jennifer N. Thornton, David A. Mcclellan, Eric N. Jellen, Craig E. Coleman Feb 2008

Expression And Evolutionary Relationships Of The Chenopodium Quinoa 11s Seed Storage Protein Gene, Mikel Stevens, Peter J. Maughan, Daniel J. Fairbanks, Marie R. B. Balzotti, Jennifer N. Thornton, David A. Mcclellan, Eric N. Jellen, Craig E. Coleman

Faculty Publications

Quinoa (Chenopodium quinoa Willd.) is a food crop cultivated by subsistence farmers and commercial growers on the high Andean plateau, primarily in Bolivia, Peru, and Chile. Present interest in quinoa is due to its tolerance of harsh environments and its nutritional value. It is thought that the seed storage proteins of quinoa, particularly the 11S globulins and 2S albumins, are responsible for the relatively high protein content and ideal amino acid balance of the quinoa seed. Here we report the genomic and cDNA sequences for two 11S genes representing two orthologous loci from the quinoa genome. Important features of the …


Evaluation Of Five Lines Of Amaranth (Amaranthus Caudatus) In Three Locations Within The Imbabura Province, Lorena Marivel Dávila Pullas Jan 2008

Evaluation Of Five Lines Of Amaranth (Amaranthus Caudatus) In Three Locations Within The Imbabura Province, Lorena Marivel Dávila Pullas

Theses and Dissertations

The following lines of white-seeded amaranth were tested in three locations within the Imbabura province of Ecuador: Ecu-0113, Ecu-0014, Ecu-2210, Ecu-4737, and Ecu-4744. The three locations used were Caranqui, Urcuquí, and Pucará which are 2228, 2423, and 2513 meters above sea level respectively. The objectives of this study were: 1) to identify which of the five experimental amaranth lines respond best at each altitude, 2) to establish which of the three locations is most appropriate for cultivation, 3) to understand the vegetative period of the five lines in each location, 4) to analyze which of the five experimental lines possesses …


Resistance Of Different Tomato Varieties (Lycopersicon Esculentum) To Late Blight (Phytophthora Infestans) In Laboratory Conditions At Uac Carmen Pampa, In The Province Of Nor Yungas, Department Of La Paz, Andrez Faustino Florez Paxi Jan 2008

Resistance Of Different Tomato Varieties (Lycopersicon Esculentum) To Late Blight (Phytophthora Infestans) In Laboratory Conditions At Uac Carmen Pampa, In The Province Of Nor Yungas, Department Of La Paz, Andrez Faustino Florez Paxi

Theses and Dissertations

In order to respond to the low economic and harvesting yields caused by diseases that attack the tomato, we considered using tomato varieties resistant to late blight (Phytophthora infestans) of tomato (Lycopersicon esculentum) and potato (Solanum tuberosum). The evaluation of the percentage of infestation was performed with tomato leaflets over a 168 hour period. The percentage of infestation was recorded every eight hours from the time of inoculation until maximum infestation was reached. The methodology applied was at random and included six treatments and five replications. The experiment consisted of collecting healthy leaflets from five improved varieties and one local …