Resources such as water taken up by plants can be released into soils through hydraulic redistribution and can also be translocated by clonal integration within a plant clonal network. We hypothesized that the resources from one (donor) microsite could be translocated within a clonal network, released into different (recipient) microsites and subsequently used by neighbor plants in the recipien...

Plants from a population of Scabiosa canescens, a locally rare species with a narrow ecological amplitude, were raised under uniform growth conditions to examine the phenotypic effects of one generation selfing and outcrossing. Particular attention was given to direct components of fitness (seedling biomass, rosette leaf number, head number, flower number per head), but two morphological charac...

Hartman, Ronald E. (American Cyanamid Co., Pearl River, N.Y.) and Chester E. Holmlund. Binding of steroids by microorganisms. J. Bacteriol. 84:1254-1259. 1962.-Certain microorganisms, particularly higher fungi, are able to bind steroids. The steroids can be recovered by solvent extraction only after lyophilization of the cultures. There appears to be a relationship between steroid structure and...

KITTELSON, P. M. AND S. D. HANDLER (Department of Biology, Gustavus Adolphus College, St. Peter, MN 56082). Genetic diversity in isolated patches of the tallgrass prairie forb, Lithospermum canescens (Boraginaceae). J. Torrey Bot. Soc. 133: 513–518. 2006.—Genetic diversity is not well understood for many species inhabiting isolated, fragmented systems. We evaluated genetic diversity for the mix...

For the first time to our knowledge, we report here methane emissions by plant communities in alpine ecosystems in the Qinghai-Tibet Plateau. This has been achieved through long-term field observations from June 2003 to July 2006 using a closed chamber technique. Strong methane emission at the rate of 26.2+/-1.2 and 7.8+/-1.1microg CH4 m-2h-1 was observed for a grass community in a Kobresia hum...

Article history: Received on: 10/11/2016 Accepted on: 11/12/2016 Available online: 27/02/2017 Six fungal species were isolated from Egyptian soil and identified as Aspergillus flavus, Aspergillus niger, Penicillium canescens, Penicillium crustosum, Penicillium sp. and Fusarium sp. and were tested for their decolorization activity of direct blue dye (DB). Aspergillus flavus and Penicillium canes...