beet yellows virus (byv) belongs to the genus closterovirus, closteroviridae family, is one the most important viruses of sugar beet worldwide. in order to identify and characterize some molecular aspects of the byv, a total of 75 symptomatic leaf samples of sugar beet were collected from sugar beet field of west azarbayjan, hamedan and kermanshah provinces, iran. leaves showing general yellowi...

introduction central vein catheterization (cvc) is an important procedure for emergency departments (ed). despite the existence of ultrasonography (us) devices in every ed, cvc was accomplished by anatomical landmarks in many eds in iran. objective this study was designed for the evaluation of us-guided cvcs, anatomical landmark cvcs, and the promotion of us-guided cvc in iran. methods and mate...

The Cucumber mosaic virus (CMV) Y-satellite RNA (Y-Sat) has a small non-protein-coding RNA genome that induces yellowing symptoms in infected Nicotiana tabacum (tobacco). How this RNA pathogen induces such symptoms has been a longstanding question. We show that the yellowing symptoms are a result of small interfering RNA (siRNA)-directed RNA silencing of the chlorophyll biosynthetic gene, CHLI....

A new huanglongbing (HLB) "Candidatus Liberibacter" species is genetically characterized, and the bacterium is designated "Candidatus Liberibacter psyllaurous." This bacterium infects the psyllid Bactericera cockerelli and its solanaceous host plants potato and tomato, potentially resulting in "psyllid yellowing." Host plant-dependent HLB transmission and variation in psyllid infection frequenc...

the knowledge of variations in the superficial veins is of clinical importance for the anatomist, radiologists, clinical practitioners and surgeons in order to plan about the operative procedures. usually cephalic vein drains into the axillary vein. in this case report study the left cephalic vein communicates with the left external jugular vein and made a common trunk at the superior surface o...

Silique shattering resistance is one of the most important agricultural traits in oil crop breeding. Seed shedding from siliques prior to and during harvest causes devastating losses in oilseed yield. Lignin biosynthesis in the silique walls is thought to affect silique-shattering resistance in oil crops. Here, we identified and characterized B. napus LATE FLOWERING (BnLATE), which encodes a Cy...

But will there be anyone to remember us in another thousand years? Surely it's not possible that not a single molecule of memory will be found for us, like a yellowing manuscript at the bottom of a forgotten drawer, whose very cataloguing guarantees its eternity even if not a single reader ever discovers it. But will the catalog itself survive?