Soil amendments with Brassica cover crops for management of Phytophthora blight on squash.

Background: Phytophthora blight induced by Phytophthora capsici is responsible for serious yield loss in vegetable production in the United States and other countries. This study was conducted to evaluate the efficacy of Brassica cover crops used as soil amendments for managing Phytophthora blight of squash.

Results: In greenhouse studies, disease incidence on squash plants was significantly reduced by soil amendment with mustard shoots or roots used at 1 and 2.

Short-term temporal dynamics of yeast abundance on the tall fescue phylloplane.

Six replicate trials were conducted to determine the short-term temporal dynamics and the effects of foliar applications of nutrients on the phylloplane yeast community of tall fescue (Festuca arundinacea Schreb.). In each trial, 2% sucrose + 0.

Side population keratinocytes resembling bone marrow side population stem cells are distinct from label-retaining keratinocyte stem cells.

Very primitive hematopoietic stem cells have been identified as side population cells based on their ability to efflux a fluorescent vital dye, Hoechst 33342. In this study we show that keratinocytes with the same side population phenotype are also present in the human epidermis. Although side population keratinocytes have the same dye-effluxing phenotype as bone marrow side population cells and can be blocked by verapamil, they do not express increased levels of the ABCG2 transporter that is believed to be responsible for the bone marrow side population phenotype.