Objective: One of the biggest health problems in the world, which occurs in more than 90 countries, is the spread of malaria. Cep-cepan leaves (Castanopsis  costata), was empirically used as an antimalarial herb in North Sumatra. Since its use has not been scientifically studied, we investigated the antimalarial activity of extract and fractions of C. costata ...

Background: In North Sumatra, Castanopsis costata is commonly used by traditional practitioners for the treatment of diabetes mellitus, however, no studies have been carried out to substantiate this practice. Therefore, study aims evaluate anti-diabetic activity extract and fractions C. leaves in mice with alloxan-induced diabetes. Methods: Swiss albino diabetes, were acquired subjected experim...

Diabetes melitus merupakan penyakit kronis gangguan metabolisme yang ditandai dengan hiperglikemia dan karbohidrat, dimana kurangnya sekresi insulin berjumlah 90-95% terdiagnosis tipe dialami oleh sebagian besar penderita diabetes melitus. Strategi dalam menangani antidiabetes adalah mencari senyawa baru pada tumbuhan obat. Tumbuhan cep-cepan (Castanopsis costata) famili Fagaceae sering digunak...

Costaria costata is a commercially and industrially important brown alga. In this study, we used next-generation sequencing to determine the complete plastid genome of C. costata. The genome consists of a 129,947 bp circular DNA molecule with an A+T content of 69.13% encoding a standard set of six ribosomal RNA genes, 27 transfer RNA genes, and 137 protein-coding genes with two conserved open r...

SEMIA 6399T is the type strain of Bradyrhizobium mercantei, a nitrogen-fixing symbiont of Deguelia costata Its draft genome contains 8,842,857 bp with 8,246 predicted coding sequences (CDS), several related to amino acids and derivatives and to stress tolerance, with an emphasis on oxidative stress, in addition to symbiotic genes.

An investigation to clarify some obscurity about Melanopsidae was performed on specimens collected from different sites of the South Iraq. Three morphs were recognized, two are widespread: Melanopsis costata and nodosa, other subtingitana has a narrow distributions. Key words: Melanopsidae; costata; nodosa; subtingitana; Iraq

The aim of this study is to describe a new species of the costata-group from Brazil. Alona margipluma sp. nov. shares morphological traits with A. costata Sars, 1862, A. natalensis Sinev, 2008, and A. cheni Sinev, 1999, but differs from them in: (i) thin setulae between the marginal setae on the valves, (ii) setae 4-5 on the exopodite of limb III long and different in length, (iii) bottle-shape...

The aim of this study is to analyze the effects of forest gaps on the variations of soil properties in Castanopsis kawakamii natural forest. Soil physical and chemical properties in various sizes and development stages were studied in C. kawakamii natural forest gaps. The results showed that forest gaps in various sizes and development stages could improve soil pore space structure and water ch...

A total of 38 fungal taxa were identified on senescent untreated and autoclaved Castanopsis fissa leaves during a 4-month study period. Seventy-six percent of the fungal genera found in this survey have not previously been recorded from Castanopsis. Frequency and time of occurrence of fungal taxa occurring on untreated senescent leaves were clustered into four groups when analyzed by cluster an...

The Quaternary climate cycles played an important role in shaping the distribution of biodiversity among current populations, even in warm-temperate zones, where land was not covered by ice sheets. We focused on the Castanopsis-type broadleaved evergreen forest community in Japan, which characterizes the biodiversity and endemism of the warm-temperate zone. A comparison of the phylogeographic p...