Article Title: Effects of ascorbic acid, rosemary, and Origanoxin preventing bone marrow discoloration in beef lumbar vertebrae in aerobic and anaerobic packaging systems. Author: Grobbel, J.P. Other Author(s): Dikeman, M.E. Yancey, E.J. Smith, J.S. Kropf, D.H. Milliken, G.A. Source Info: Meat science. 2006 Jan., v. 72, no. 1 p. 47-56. 1022643281ISSN 0309-1740 Call Number TX373.M4 Bibliography Note: Includes references NAL Subject(s): food packaging beef meat cuts longissimus dorsi vertebrae bone marrow ascorbic acid rosemary Origanum antioxidants modified atmosphere packaging oxygen carbon dioxide nitrogen beef quality discoloration poly(vinyl chloride) color thiobarbituric acid-reactive substances Subject Code(s): Q302 Q502 Q402 ================================================================================ Article Title: Effects of Inbreeding in the Dam on Dystocia and Stillbirths in US Holsteins. Author: Adamec, V. Other Author(s): Cassell, B. G. Smith, E. P. Pearson, R. E. Source Info: Journal of dairy science. 2006 Jan., v. 89, no. 1 p. 307-314. DUM0001441ISSN 0022-0302 Call Number 44.8 J822 Abstract: Dystocia scores were recorded by producers on 120,434 Holsteins (218,213 records) from 1985 through 1996; dystocia scores 3 to 5 were coded as difficult births. Stillbirths were recorded for deaths within the first 48 h after birth. Data were restricted to registered cows for pedigree completeness, and inbreeding coefficients were calculated using 5-generation pedigrees. Computational restrictions required that subsets of the data be created by choosing herds at random but using all records from selected herds. Effects of inbreeding in the dam were estimated in a sire-maternal grandsire (of the calf) threshold model using Gibbs sampling. The model included fixed effects of calf sex and inbreeding of the dam and random effects of herd-year-season of birth, additive genetic, and residual effects. First, second, and third parities were analyzed separately. Solutions for sex of calf and inbreeding from different parities were converted to expected change in probability of dystocia or stillbirth per 1% increase in inbreeding. Inbreeding effects were largest for first-parity cows giving birth to male calves at a 0.42% increase in probability of dystocia/1% increase in inbreeding. Effects of inbreeding for first-parity dams giving birth to female calves were smaller, 0.30%/1% increase in inbreeding. Incidence of stillbirths increased 0.25 and 0.20% for male and female calves/1% increase in inbreeding for first parity births. Effects of inbreeding on dystocia and stillbirths declined with parity. Effects of inbreeding were small, especially in later parities, but were consistently unfavorable. Bibliography Note: Includes references Processing Status: In process ================================================================================ Article Title: A New Role for the Arabidopsis AP2 Transcription Factor, LEAFY PETIOLE, in Gibberellin-Induced Germination Is Revealed by the Misexpression of a Homologous Gene, SOB2/DRN-LIKE. Author: Ward, Jason M. Other Author(s): Smith, Alison M. Shah, Purvi K. Galanti, Sarah E. Yi, Hankuil Demianski, Agnes J. van der Graaff, Eric Keller, Beat Neff, Michael M. Source Info: Plant cell. 2006 Jan., v. 18, no. 1 p. 29-39. DUM0001475ISSN 1040-4651 Call Number QK725.P532 URL: http://www.plantcell.org/ http://www.plantcell.org/ Electronic Resource http://www.plantcell.org/ Abstract: Gibberellic acid (GA) promotes germination, stem/hypocotyl elongation, and leaf expansion during seedling development. Using activation-tagging mutagenesis, we identified a mutation, sob2-D (for suppressor of phytochromeB-4 [phyB-4]#2 dominant), which suppresses the long-hypocotyl phenotype of a phyB missense allele, phyB-4. This mutant phenotype is caused by the overexpression of an APETALA2 transcription factor, SOB2, also called DRN-like. SOB2/DRN-like transcript is not detectable in wild-type seedling or adult tissues via RT-PCR analysis, suggesting that SOB2/DRN-like may not be involved in seedling development under normal conditions. Adult sob2-D phyB-4 plants have curled leaves and club-like siliques, resembling plants that overexpress a closely related gene, LEAFY PETIOLE (LEP). Hypocotyls of a LEP-null allele, lep-1, are shorter in the light and dark, suggesting LEP involvement in seedling development. This aberrant hypocotyl phenotype is due at least in part to a delay in germination. In addition, lep-1 is less responsive to GA and more sensitive to the GA biosynthesis inhibitor paclobutrazol, indicating that LEP is a positive regulator of GA-induced germination. RT-PCR shows that LEP transcript accumulates in wild-type seeds during imbibition and germination, and the transcript levels of REPRESSOR OF ga1-3-LIKE2 (RGL2), a negative regulator of GA signaling during germination, is unaffected in lep-1. These results suggest LEP is a positive regulator of GA-induced germination acting independently of RGL2. An alternative model places LEP downstream of RGL2 in the GA-signaling cascade. Bibliography Note: Includes references NAL Term-Genre/Form: Internet resource Processing Status: In process ================================================================================ ++++++++++++++++++++++++++++++++++++++++++ National Agricultural Library Beltsville, MD 20705 301-504-5755 agref@nal.usda.gov