The jewel beetle species Chrysobothris desmaresti (Laporte & Gory, 1836) and Hiperantha stempelmanni Berg, 1889, have been recorded in Bolivia for the first time. Both were collected on xeric Acacia trees. As indicated by their presence previous records, both may be endemic to arid intermountain valleys of Southern Bolivian Northern Argentinean Andes as well Chaco lowland forests.

The male of Phoebe ornator (Tippmann, 1960) is described. Chromatic gender dimorphism also reported for the first time in Hemilophini. In addition, new records are presented P. Brazilian states Amazonas, Mato Grosso, Rondônia and São Paulo, Bolivian department La Paz. biogeography analyzed.

A new calyptrate fly mimicking species of Gymnognathus Schönherr 1826 from the humid Tucuman-Bolivian forest in southern Bolivian Andes is described. barclayi sp. nov. distinguished closest related G. bohlsi Jordan, 1895, by color and/or distribution scales on pronotum, fourth ventrite and pygidium, wider pronotum development spines pygidium. The arrangement longitudinal stripes suggests that a mimic tachinid or muscid flies. almost exclusive occurrence tropical moist forests indicates...

Summary Black poplar ( P opulus nigra ) is a potential feedstock for cellulosic ethanol production, although breeding this specific end use required. Our goal was to identify associations between single nucleotide polymorphism SNP markers within candidate genes encoding cellulose and lignin biosynthetic enzymes, with chemical wood property phenotypic traits, toward the aim of developing genomics‐based technologies bioethanol production. Pyrolysis molecular beam mass spectrometry used...

Heavy metals such as Cu and Cd are important pollutants. Quillay (Quillaja saponaria) is a tree species endemic to Chile that of worldwide commercial interest due its saponins. It can grow on contaminated sites. However, the biological mechanisms underlying defensive responses remain elusive. This study aimed characterize plants under stress identify controlling their interaction with these metals. We subjected six-month-old (75, 150, 300 μM) (20, 40, 80 in hydroponics for week assessed...

A new species of the Andean stag beetle genus Auxicerus Waterhouse, 1883 is described from humid Tucuman-Bolivian forest in southern Bolivian Andes. magnipunctatus sp. nov. distinguished all congeners by distinctly larger punctures mesosternum; antennomeres 2–6 subquadrate, last two joints club wider than long; lamellae not widely separated; posterior end ocular canthus rounded and anterior edge moderately developed into an obtuse triangle. possibly endemic to forest. Along with presence...

The genetic and physiological mechanisms underlying the relationship between water-soluble carbohydrates (WSC) water stress tolerance are scarcely known. This study aimed to evaluate main WSC in stems, expression of genes involved fructan metabolism wheat genotypes growing a glasshouse with (WS; 50% field capacity from heading) full irrigation (FI; 100% capacity). Eight (five tolerant three susceptible stress) were evaluated initially (experiment 1) two most contrasting terms accumulation...

Aquaporins (AQPs) are transmembrane proteins essential for controlling the flow of water and other molecules required development stress tolerance in plants, including important crop species such as wheat (Triticum aestivum). In this study, we utilized a genomic approach analyzing information about AQPs available public databases to characterize their structure function. Furthermore, validated expression suite AQP genes, at transcriptional level, accessions with contrasting responses...

Abstract Background Populus trichocarpa is an important forest tree species for the generation of lignocellulosic ethanol. Understanding genomic basis biomass production and chemical composition wood fundamental in supporting genetic improvement programs. Considerable variation has been observed this complex traits related to growth, phenology, ecophysiology chemistry. Those are influenced by both polygenic control environmental effects, their genome architecture regulation only partially...

Mountain forest ecosystems in the Andes are threatened by deforestation. Increasing fire frequencies lead to fire-degraded habitats that often characterized a persistent fern-dominated vegetation. Little is known about consequences of these drastic changes habitat conditions for pollinator communities. In rapid diversity assessment, we collected individuals two major groups insect pollinators (bees and butterflies/moths) with pan traps compared diversities spatial block design between...

The present study was undertaken to examine the ability of different genomic selection (GS) models predict growth traits (diameter at breast height, tree height and wood volume), stem straightness branching quality Eucalyptus globulus Labill. trees using a genome-wide Single Nucleotide Polymorphism (SNP) chip (60 K), in one southernmost progeny trials species, close its southern distribution limit Chile. GS methods examined were Ridge Regression-BLUP (RRBLUP), Bayes-A, Bayes-B, Bayesian...

Abstract In this article, by using carbon stable isotopes, we assessed the past and present land use influences that riparian areas are subject within agricultural landscapes. Emphasis is given to understanding of effects 2012 Brazilian Forest Act on such areas. We selected five a highly C4 dominated landscape. Three them had 30 meters native forest buffer (NRFB) two 8 meter no NRFB. used three 100 meter-transects located 5, 15 relative stream channel obtain soil samples (0 - 10 cm). All...

Black cottonwood (Populus trichocarpa) is a species of economic interest and an outstanding study model. The aspen borer (Saperda calcarata) causes irreversible damage to poplars other riparian in North America. insect can produce multiple effects ranging from the presence some galleries stem tree death. Despite ecological commercial importance this tree–insect interaction, genetic mechanisms underlying response P. trichocarpa S. calcarata are scarcely understood. In study, common garden...

Species belonging to the genus Populus (poplars) produce a series of defensive proteins in response insect damage. Proteinase inhibitors, polyphenol oxidases, and chitinases are most relevant intensively studied proteins. Most knowledge about relation between these herbivores has been obtained from studies with chewing insects. Nothing is known whether phloem-feeder insects such as aphids able trigger comparable response. In current study, expression genes encoding Kunitz trypsin inhibitor 3...

Quillaja genus (Quillajaceae family) is endemic to South America, where represented by two species, saponaria and brasiliensis. One outstanding characteristic of these forest tree species their production saponins, a family amphipathic glycosides, involved in the defensive response plants against biotic abiotic factors. Saponins are metabolites economic importance due chemical physical properties. Basic applied research efforts performed during last decades, mainly on Q. saponaria, have...

The results of a survey Cerambycidae in subhumid Tucuman Bolivian forest (TBF) the Tariquía Reserve, southern Andes, are presented. In nine days collecting with beating sheets and light trap, we obtained records for 93 species Cerambycidae, including 50 Cerambycinae, 42 Lamiinae one Prioninae. Ten reported first time from Bolivia. Two taxa could only be determined to genus might represent undescribed species. Forty-six percent collected also occur southeastern Brazil, Paraguay, Argentina...

Between 1999 and 2002 the Poplar Technology Center (PTC) introduced more than 2000 experimental poplar hybrids originated by former Molecular Genetics Cooperative. 2003, 12 nursery tests were established in central Chile. Initial growth presence of pests diseases recorded annually. At end 2005, about 100 selected from planted four candidacy during 2006. Genetic variation wood properties is still under study. Here, we present a summary results obtained to date.