Zinc Nutrition of Rice Plants as Influenced by Seed Germinated in Zinc Solutions

In recent years a physiological disorder of rice (Oryza sativa L.) seedlings growing in soils high in exchangeable calcium has been diagnosed as zinc deficiency. Calculations show that less than 30 g of zinc is needed to satisfy the nutrition of a hectare of 6-8-wk-old rice plants. Rice seed was soaked and germinated in dilute solutions of zinc ethylenediamine tetraacetate, zinc sulfate and zinc lignosulfonate prior to planting in greenhouse pots containing a zinc-deficient soil. The rice plants grown from the zinc-treated seed produced more growth and sorbed more zinc than rice plants grown from untreated seed

Actividad anti-caquexica del masoprocol en modelo hepatoma ascitico yoshida ah-130.

96 p.El síndrome de Caquexia-Cancerosa es un estado complejo, principalmente por que existe un alto desequilibrio metabólico en el huésped, en el cual se destaca una aumentada lipólisis y por lo tanto una importante movilización de lípidos, lo que lleva a una marcada alteración del metabolismo y por consecuente una progresiva y rápida perdida de peso con una significativa morbilidad y mortalidad en pacientes con cáncer. En el proceso de lipolítico, destaca una enzima altamente lipolítica denominada Lipasa Sensible a Hormona (HSL), esta enzima, como su nombre lo indica, se encuentra regulada por hormonas que estimulan la fosforilación o desfosforilación de la enzima, provocando su activación o inactivación respectivamente. En estudios anteriores se logró determinar un inhibidor no hormonal de la fosforilación de la HSL, el Acido Nordihidroguaiaretico (NDGA) o comercialmente llamado Masoprocol, el que además de disminuir la actividad de la HSL se le atribuye una posible actividad Anti-Cancerígena. (Lindvall, H, et al., 2004) En este trabajo se administro Masoprocol (80mg/kg) a ratas Wistar – Macho, inoculadas con células del Hepatoma Ascitico (Yoshida AH – 130), un modelo altamente Caquéctico. Los resultados fueron favorables, debido a que se logro disminuir la lipólisis, demostrado por los niveles de Ácidos Grasos y Glicerol, producto de degradación lipolitica. Además se disminuyó la perdida del tejido graso con valores estadísticamente significativos (p < 0,01.) respecto al grupo Tumor. Finalmente se pudo observar que el Masoprocol provoco una disminución estadísticamente significativa (p < 0,05) del numero de células cancerígenas respecto al grupo Tumor. Por lo tanto se podría decir que el Masoprocol posee un rol Anti- Cancerígeno al disminuir la población celular tumoral

Effect of different rates of zinc on root morphological traits among different upland rice landraces in Malaysia

Billions of people globally are estimated to suffer from Zn deficiency due to their low dietary intake, especially those with rice. Global efforts are under way to improve the Zn concentrations in rice to increase Zn in diets. Zinc uptake in relation to morphological root parameters among 7 upland rice varieties were studied by conducting a solution culture experiment using modified Yoshida solution in Agriculture Faculty of University Putra Malaysia. Five Zinc levels were developed by the addition of 0, 5, 10, 20, 30 mg L-1 ZnSO4. Seedlings were harvested in week 4. Zn uptake in roots and shoots of upland rice showed significant differences among all varieties. Root Zn uptake significantly increased at all rates. Other root parameters (length, average diameter, surface area, volume, and number of root tips) did not show any significant differences in 0 to 20 mg Zn L-1, but they decreased significantly in 30 mg Zn L-1 in 4th week of observation. In addition shoot Zn uptake like other root parameters followed this trend and decreased significantly in 30 mg Zn L-1 in 4th week of observation

Memory of the Macabre

A marine contemplates life, death, and veganism via the death of a family cow. Articles, stories, and other compositions in this archive were written by participants in the Mighty Pen Project. The program, developed by author David L. Robbins, and in partnership with Virginia Commonwealth University and the Virginia War Memorial in Richmond, Virginia, offers veterans and their family members a customized twelve-week writing class, free of charge. The program encourages, supports, and assists participants in sharing their stories and experiences of military experience so both writer and audience may benefit