Orientation Center Newsletter, August, 2007, Vol. 27, no. 1

The Orientation Center newsletter is produced three times a year, and includes articles written by students, staff, and former students. It also contains news about what is happening to other students who have been in the Center.

Ordförande Aarne Saarinen 27.3.1971

Kirje

Junassa Kuopio - Mikkeli 24.5.27

Kirje 24.5.1927

Säkkijärvi 27/6 1933

Kirje 27.6.1933

Diversity Workplan, September 27, 2005

To recruit and retain a diverse workforce so that state government will be enhanced by the benefits of diversity and better meet the needs of the public it serves.

Intraspecific competition reveals conditional fitness effects of single gene polymorphism at the Arabidopsis root growth regulator BRX.

Intraspecific genetic variation for morphological traits is observed in many organisms. In Arabidopsis thaliana, alleles responsible for intraspecific morphological variation are increasingly being identified. However, the fitness consequences remain unclear in most cases. Here, the fitness effects of alleles of the BRX gene are investigated. A brx loss-of-function allele, which was found in a natural accession, results in a highly branched but poorly elongated root system. Comparison between the control accession Sav-0 and an introgression of brx into this background (brxS) indicated that, surprisingly, brx loss of function did not negatively affect fitness in pure stands. However, in mixed, well-watered stands brxS performance and reproductive output decreased significantly, as the proportion of Sav-0 neighbors increased. Additional comparisons between brxS and a brxS line that was complemented by a BRX transgene confirmed a direct effect of the loss-of-function allele on plant performance, as indicated by restored competitive ability of the transgenic genotype. Further, because plant height was very similar across genotypes and because the experimental setup largely excluded shading effects, the impaired competitiveness of the brx loss-of-function genotype likely reflects below-ground competition. In summary, these data reveal conditional fitness effects of a single gene polymorphism in response to intraspecific competition in Arabidopsis.

Berlin 27/2 -32

Kirje 27.2.1932

Harjatyöntekijä Alf Damsten 27/2 1962

Kirje 27.2.1962

Report on the review of selected general and application controls over the State University of Iowa (University of Iowa) PeopleSoft General Ledger system for the period June 4, 2007 through July 27, 2007

Report on the review of selected general and application controls over the State University of Iowa (University of Iowa) PeopleSoft General Ledger system for the period June 4, 2007 through July 27, 2007

Maanviljelijä Arvo Moilanen 27/4 1970

Kirje 27.4.1970

Polymorphism, inter-population and inter-specific variation in Nyssomyia intermedia (Lutz & Neiva) and Nyssomyia neivai (Pinto) (Diptera, Psychodidae, Phlebotominae)

Nyssomyia intermedia (Lutz & Neiva) and Nyssomyia neivai (Pinto) are morphologically very close and both present great variation in some structures. The objective of this study is a description of the variation among the females of these species in populations from the States of Minas Gerais and São Paulo. The morphological structures studied were the number of horizontal teeth in the cibarium and the number of rings and the shape of the terminal knob of the spermathecae. The spermatheca rings are significantly more numerous in N. intermedia than in N. neivai and the simple shape of the terminal knob predominated in both species. Regarding the cibarium, eight to eleven teeth have been found in both species, with up to twelve teeth in the latter. The number of horizontal teeth and the shape of the terminal knob of the spermathecae were variable throughout the populations of both species and all structures were polymorphic in the populations studied.