Glycerol-Induced Powdery Mildew Resistance in Wheat by Regulating Plant Fatty Acid Metabolism, Plant Hormones Cross-Talk, and Pathogenesis-Related Genes

Our previous study indicated that glycerol application induced resistance to powdery mildew (Bgt) in wheat by regulating two important signal molecules, glycerol-3-phosphate (G3P) and oleic acid (OA18:1). Transcriptome analysis of wheat leaves treated by glycerol and inoculated with Bgt was performed to identify the activated immune response pathways. We identified a set of differentially expressed transcripts (e.g., TaGLI1, TaACT1, and TaSSI2) involved in glycerol and fatty acid metabolism that were upregulated in response to Bgt infection and might contribute to G3P and OA18:1 accumulation. Gene Ontology (GO) enrichment analysis revealed GO terms induced by glycerol, such as response to jasmonic acid (JA), defense response to bacterium, lipid oxidation, and growth. In addition, glycerol application induced genes (e.g., LOX, AOS, and OPRs) involved in the metabolism pathway of linolenic and alpha-linolenic acid, which are precursor molecules of JA biosynthesis. Glycerol induced JA and salicylic acid (SA) levels, while glycerol reduced the auxin (IAA) level in wheat. Glycerol treatment also induced pathogenesis related (PR) genes, including PR-1, PR-3, PR-10, callose synthase, PRMS, RPM1, peroxidase, HSP70, HSP90, etc. These results indicate that glycerol treatment regulates fatty acid metabolism and hormones cross-talk and induces the expression of PR genes that together contribute to Bgt resistance in wheat.

54 Digestibility of forages in ruminally cannulated Jersey steers supplemented with liquid glycerol on a wheat straw forage diet

The purpose of this study was to determine the impact of supplementation of glycerol at a rate of 15% of DMI on forage digestibility on a diet of mature wheat hay. Forages tested included bermuda hay, wheat hay, alfalfa hay, and sorghum sudan hay. Samples were ground through a 2mm screen and placed in Ankom forage in-situ bags. Samples were run in triplicate to reduce error and increase statistical significance. Two ruminally cannulated steers were used in a 2x2 Latin square design for the study with ad libitum access to wheat hay and water. Animals were housed in a dry lot pen for the study. Diets offered were Control = wheat hay and Treatment= control + glycerol at 15% of daily DMI. The study consisted of 2 three-week periods. Each period had a 2-week standardization followed by a 1-week test period. During the test period, forage bags were placed in each steer for 0 h, 48 h, 72 h, 96 h, and 144 h for fermentation. At the end of the incubation period, bags were collected and cold shocked to stop microbial digestion. The samples were then dried at 55°C and stored for later analysis for NDF. A significant impact on NDFdig by treatment (P < 0.0001) was observed. NDFdig was 59.2% w/ glycerol versus control at 49.13% overall. In addition, there was a significant difference between steers (P = 0.0001) on glycerol treatment (51.95% versus 66.45% NDFdig between steer A and B), indicating difference in ruminal population efficiency between individual animals. No significant difference (P = 0.98) between steers on the control treatment was observed. Implications of this study are the inclusion of dietary glycerol in the diet of ruminants on a low-quality forage diet may increase energy level and improve ruminal digestibility and animal response may be dependent on the unique ruminal environment of individual animals.

145 Digestibility of forages in ruminally cannulated Jersey steers supplemented with liquid glycerol on a wheat straw forage diet

The purpose of this study was to determine the impact of supplementation of glycerol at a rate of 15% of DMI on forage digestibility on a diet of mature wheat hay. Forages tested included bermuda hay, wheat hay, alfalfa hay, and sorghum sudan hay. Samples were ground through a 2mm screen and placed in Ankom forage in-situ bags. Samples were run in triplicate to reduce error and increase statistical significance. Two ruminally cannulated steers were used in a 2x2 Latin square design for the study with ad libitum access to wheat hay and water. Animals were housed in a dry lot pen for the study. Diets offered were Control = wheat hay and Treatment= control + glycerol at 15% of daily DMI. The study consisted of 2 three-week periods. Each period had a 2-week standardization followed by a 1-week test period. During the test period, forage bags were placed in each steer for 0 h, 48 h, 72 h, 96 h, and 144 h for fermentation. At the end of the incubation period, bags were collected and cold shocked to stop microbial digestion. The samples were then dried at 55°C and stored for later analysis for NDF. A significant impact on NDFdig by treatment (P < 0.0001) was observed. NDFdig was 59.2% w/ glycerol versus control at 49.13% overall. In addition, there was a significant difference between steers (P = 0.0001) on glycerol treatment (51.95% versus 66.45% NDFdig between steer A and B), indicating difference in ruminal population efficiency between individual animals. No significant difference (P = 0.98) between steers on the control treatment was observed. Implications of this study are the inclusion of dietary glycerol in the diet of ruminants on a low-quality forage diet may increase energy level and improve ruminal digestibility and animal response may be dependent on the unique ruminal environment of individual animals.

Efektivitas Sukrosa sebagai Proteksi Aktif Membran Ekstraseluler Spermatozoa Sapi Bali pada Zona Pre-Freezing

ABSTRAK. Penelitian ini bertujuan untuk mengetahui efektivitas kinerja sukrosa dalam Tris kuning telur sebagai krioprotektan untuk perlindungan aktif ekstraseluler membran plasma utuh spermatozoa sapi Bali. Bahan yang digunakan dalam penelitian ini adalah sperma sapi Bali terpilih dan bahan pengencer semen. Penelitian menggunakan rancangan acak lengkap (RAL) yang terdiri dari 5 perlakuan dan 4 ulangan. Perlakuan A (Kontrol) = Tris 80%+20% Kuning telur + Gliserol; Perlakuan B = 0,2% Sukrosa + Tris 80%+20% Kuning telur + Gliserol; Perlakuan C = 0,3% Sukrosa + Tris 80%+20% Kuning telur + Gliserol; Perlakuan D = 0,4% Sukrosa + Tris 80%+20% Kuning telur + Gliserol; Perlakuan E = 0,5% Sukrosa + Tris 80%+20% Kuning telur + Griserol. Parameter yang diamati dalam penelitian ini adalah pergerakan progresif aktif spermatozoa dan membran Plasma Utuh (MPU) pada tahap pre-feezing semen sapi Bali. Hasil penelitian menunjukkan bahwa tingkat konsentrasi sukrosa pada tahap pre-freezing tidak berpengaruh nyata (P 0,05%) terhadap persentase progresif aktif spermatozoa dan proteksi MPU semen Sapi Bali dan tingkat aktif progresif spermatozoa dengan penambahan sukrosa dalam kuning telur dikategorikan baik (66.75- 69.00%). Penambahan berbagai level konsentrasi sukrosa sebagai krioprotektan ekstraseluler melapisi dan mengikat membran spermatozoa dari efek perubahan suhu yang drastis pada tahap pre-freezing dalam proses semen beku. The effectiveness of sucrose as the Active Protection of Bali Spermatozoa Extracellular Membranes Pre-Freezing ABSTRACT. This study aimed to determine the effectiveness of the performance of sucrose in tris egg yolk as a cryoprotectant for extracellular active protection of extracellular membrane of Bali bulls spermatozoa. The material used in this study is the sperm of selected Bali bulls and spermatozoa thinning agent. This study used an experimental method with a completely randomized design (CRD) consisting of 5 treatments and 4 replications. Treatment A (Control) = Tris 80% + 20% Egg Yolk + Glycerol; Treatment B = 0.2% Sucrose + Tris 80% + 20% Egg yolk + Glycerol; Treatment C = 0.3% Sucrose + Tris 80% + 20% Egg yolk + Glycerol; Treatment D = 0.4% Sucrose + Tris 80% + 20% Egg yolk + Glycerol; and Treatment E = 0.5% Sucrose + Tris 80% + 20% Egg Yolk + Griserol. The parameters observed in this study were the active progressive movement and extracellular membrane of spermatozoa protection in Bali bulls pre-freezing stage. The results showed that the sucrose tris egg yolk concentration level at the pre freezing stage no significant effect (P 0.05%) on the active progressive percentage of spermatozoa and bali bulls extracellular membrane protection conditions active levels of progressive spermatozoa with the addition of sucrose in egg yolk are categorized as good (66.75- 69.00%). Addition of various levels of sucrose concentration as extracellular cryoprotectant coating and binding of spermatozoa membranes from the effects of drastic temperature changes in the pre-freezing stage in the process of frozen sperm.

Performance of Bioprosthetic Valves after Glycerol Dehydration, Ethylene Oxide Sterilization, and Rehydration

Objective Most commercially available bioprosthetic valves are stored in an aldehyde solution. We report a new alternative method: Self-expanding valves composed of dehydrated tissues with a high glycerin:water ratio can be collapsed into specially designed sheaths prior to sterilization for ease of delivery and storage. Materials and Methods Changes in tissue dimension of five samples of bovine pericardium were evaluated from baseline after glycerol treatment, air-drying, ethylene oxide (EtO) sterilization, and rehydration with water. Three valves fabricated from glutaraldehyde cross-linked tissues, including porcine pericardial tissue, bovine pericardial tissue, and porcine aortic valve, were dehydrated through a proprietary glycerin-based process, collapsed, placed within a catheter, EtO sterilized, stored for up to 212 days, and rehydrated with water. These valves were characterized in a mock circulation by mounting them at the inlet portion of a pneumatic pump before dehydration and after rehydration to evaluate the effects of dehydration and rehydration on the valve performance. Results Tissues treated with glycerol solution showed no significant changes in dimension from baseline after glycerol treatment, air-drying, EtO sterilization, and rehydration with water. In all the valves, pump flows reached the maximum output capacity of the pneumatic pump after rehydration without an increase in filling pressures as compared with those before dehydration. Conclusions This method for storing collapsible bioprosthetic valves using a proprietary glycerin-based process demonstrated excellent valve performance.