Mobile gibberellin directly stimulates Arabidopsis hypocotyl xylem expansion.

Secondary growth of the vasculature results in the thickening of plant structures and continuously produces xylem tissue, the major biological carbon sink. Little is known about the developmental control of this quantitative trait, which displays two distinct phases in Arabidopsis thaliana hypocotyls. The later phase of accelerated xylem expansion resembles the secondary growth of trees and is triggered upon flowering by an unknown, shoot-derived signal. We found that flowering-dependent hypocotyl xylem expansion is a general feature of herbaceous plants with a rosette growth habit. Flowering induction is sufficient to trigger xylem expansion in Arabidopsis. By contrast, neither flower formation nor elongation of the main inflorescence is required. Xylem expansion also does not depend on any particular flowering time pathway or absolute age. Through analyses of natural genetic variation, we found that ERECTA acts locally to restrict xylem expansion downstream of the gibberellin (GA) pathway. Investigations of mutant and transgenic plants indicate that GA and its signaling pathway are both necessary and sufficient to directly trigger enhanced xylogenesis. Impaired GA signaling did not affect xylem expansion systemically, suggesting that it acts downstream of the mobile cue. By contrast, the GA effect was graft transmissible, suggesting that GA itself is the mobile shoot-derived signal.

Business Sphere, Vol. 21, no.3

Iowa may be known for some of the world’s most fertile cropland, but in recent years, we’ve become fertile ground for rapid growth in information technology as well. From the recent “plug-in” of Google’s $600-million Council Bluffs data center to Microsoft’s planned half-billion-dollar West Des Moines expansion to IBM’s 1,300-job-creating expansion in Dubuque, technology leaders are finding Iowa a place to grow. And why not? Iowa has a supportive business climate and its infrastructure — physical and human — give our technology companies the competitive advantages that allow them to grow and prosper.

Business Sphere, Vol. 18, no.3

Iowa may be known for some of the world’s most fertile cropland, but in recent years, we’ve become fertile ground for rapid growth in information technology as well. From the recent “plug-in” of Google’s $600-million Council Bluffs data center to Microsoft’s planned half-billion-dollar West Des Moines expansion to IBM’s 1,300-job-creating expansion in Dubuque, technology leaders are finding Iowa a place to grow. And why not? Iowa has a supportive business climate and its infrastructure — physical and human — give our technology companies the competitive advantages that allow them to grow and prosper.

Business Sphere, Vol. 19, no.3

Iowa may be known for some of the world’s most fertile cropland, but in recent years, we’ve become fertile ground for rapid growth in information technology as well. From the recent “plug-in” of Google’s $600-million Council Bluffs data center to Microsoft’s planned half-billion-dollar West Des Moines expansion to IBM’s 1,300-job-creating expansion in Dubuque, technology leaders are finding Iowa a place to grow. And why not? Iowa has a supportive business climate and its infrastructure — physical and human — give our technology companies the competitive advantages that allow them to grow and prosper.

Audit report on the City of West Branch, Iowa for the year ended June 30, 2009

Audit report on the City of West Branch, Iowa for the year ended June 30, 2009

Cytochrome b haplotype divergences in West European Apodemus

Sequencing of the cytochrome b mitochondrial gene (732 base pairs) in samples of Apodemus sylvaticus from Central Europe (eastern France, Switzerland, southern Germany and western Austria) revealed significant molecular variation not reflected in previous morphological and genetic studies of this species. A comparison with the sequences (150 bp) of 54 specimens available from GenBank (NCBI) showed that two problematic individuals originating from southern Germany have to be assigned to A. fulvipectus, a species not yet known in western Europe. A. sylvaticus specimens (n = 14) sampled north of the Alps exhibited a maximum intraspecific sequence divergence of about 5.1%, whereas the maximum divergence is much Lower in A. flavicollis (1%, n = 5) and in A. alpicola (0.5%, n = 4), although the samples originate from a similar geographic range of about 350 km. We also found a high rate of erroneously assigned specimens in GenBank, which indicates that the discrimination of Apodemus species remains a problem and requires further investigations.

Site Development and Facility Expansion Regulatory Assistance Program, 2001

The Iowa Department of Economic Development (IDED) helps businesses expand or locate all or part of their business in Iowa. It just makes sense for companies engaged in advanced manufacturing, biosciences and information solutions/financial services to look at Iowa and IDED helps to ensure their economic development timelines are met. Iowa is nationally recognized as an innovator in helping businesses by meeting their development needs in a timely and effective manner. IDED networks with Regulatory Assistance Coordinators in agencies across state government to reduce response time to businesses. This agency coordination helps to ensure that regulatory and compliance questions, or other needs associated with project site development and facility expansion are serviced quickly. We have listed information below about some of the more common regulatory requirements related to site development and expansion.

Audit report on the City of West Branch, Iowa for the year ended June 30, 2010

Audit report on the City of West Branch, Iowa for the year ended June 30, 2010

Educational expansion, intergenerational mobility and over-education

[eng] There is a vast literature on intergenerational mobility in sociology and economics. Similar interest has emerged for the phenomenon of over-education in both disciplines. There are no studies, however, linking these two research lines. We study the relationship between social mobility and over-education in a context of educational expansion. Our framework allows for the evaluation of several policies, including those affecting social segregation, early intervention programs and the power of unions. Results show the evolution of social mobility, over-education, income inequality and equality of opportunity under each scenario.