UPRRP College of Natural Sciences

About: UPRRP College of Natural Sciences is a based out in . It is known for research contribution in the topics: Apoptosis & Population. The organization has 9323 authors who have published 11826 publications receiving 284172 citations.

Discovery of a unique novel clade of mosquito-associated bunyaviruses

Abstract: Article published in J Virol. 2013 Dec;87(23):12850-65. doi: 10.1128/JVI.01862-13. Epub 2013 Sep 25. Also available at http://www.ncbi.nlm.nih.gov/pubmed/24067954

Existence of Solutions for a One Dimensional p-Laplacian on Time-Scales

Abstract: We prove the existence of at least one positive solution to the time-scale, delta–nabla dynamic equation, (g(u^{ \Delta }))^{ abla } + c(t) \hspace{0.167em} f(u) = 0, with boundary conditions, u(a) - B_{0}(u^{ \Delta }( u )) = 0 and u^{ \Delta }(b) = 0. Here, g(z) = \vert z \vert ^{p - 2}z for p > 1, ν∈(a,b), f and c are left-dense continuous and B 0 is a function “bounded” by two linear rays.

Soil pH and biome are both key determinants of soil archaeal community structure

Abstract: The mechanisms underlying community composition and diversity of soil archaea are poorly understood. We compared both total archaea and ammonia oxidizing archaea (AOA) using 16S rRNA and amoA genes pyrosequencing respectively, in two different biomes: tropics (Malaysia), and temperate (Korea and Japan). Despite differences in characteristics of these biomes, we found that at the broad taxonomic level the dominant archaeal lineages are the same, except in certain instances (16S rRNA gene: group 1.1a Thaumarchaeota ; amoA gene: Nitrososphaera and Nitrosotalea lineages). However, at the OTU level, both total archaea and AOA communities showed biome-specific patterns, indicating that at lower taxonomic levels biome differences are also important. In both biomes, total archaeal diversity showed a negative correlation with pH, but a hump-shaped curve for AOA diversity, peaking at ∼pH 6.0. Within each biome, pH also emerged as the delimiting factor determining variation in community composition of both total archaea and AOA. Communities from each biome clustered separately, even at analogous pH levels. At the OTU level, certain shared OTUs did occur at approximately the same pH range in both biomes. We found that closely related OTUs of both total archaea and AOA respectively tended to co-occur, suggesting that in evolutionary terms these closely related lineages have conserved very similar ecological requirements. This predictability also strongly suggests that soil archaeal community assembly has strongly deterministic aspect. Overall, our findings emphasize that soil archaeal communities are to large extent predictable and structured by both biome and by soil chemical environment, especially pH.