Seasonal variations in leaf and branch trace elements and the influence of a 3-yr 100% rainfall exclusion on Pinus massoniana Lamb.

abstract：BACKGROUND:Psilochilus is a poorly studied orchid genus distributed from southern Mexico to south-eastern Brazil. A taxonomic revision of this Neotropical endemic based on morphological data is presented. MATERIAL AND METHODS:Over 170 dried herbarium specimens and flowers preserved in liquid of Psilochilus were analyz...

journal_title：PeerJ

authors： Kolanowska M,Naczk AM,Jaskuła R

更新日期：2016-11-08 00:00:00

abstract：Background:Experiencing an adequate amount of cold temperatures over winter is necessary for many temperate tree species to break dormancy and flower in spring. Thus, changes in winter and spring temperatures associated with climate change may influence when trees break dormancy and flower in the future. There have bee...

journal_title：PeerJ

authors： Prevéy JS,Harrington CA

更新日期：2018-09-25 00:00:00

abstract：:Chronostratigraphic correlation of terrestrial Early Cretaceous biotas in China is highly problematic due to the lack of marine deposits, few absolute dates, and limited number of index fossils. This often leaves vertebrate faunas as one of the few potential tools for a preliminary biostratigraphy. Taxonomic identity ...

journal_title：PeerJ

authors： Li DQ,Zhou CF,Li L,Yang JT,Li L,Rabi M

更新日期：2019-01-15 00:00:00

abstract：:The first plants related to the ferns are represented by several extinct groups that emerged during the Devonian. Among them, the iridopterids are closely allied to the sphenopsids, a group represented today by the genus Equisetum. They have been documented in Middle to early Late Devonian deposits of Laurussia and th...

journal_title：PeerJ

authors： Champreux A,Meyer-Berthaud B,Decombeix AL

更新日期：2020-06-16 00:00:00

abstract：Background and Aim:Water is an increasingly scarce resource while some crops, such as paddy rice, require large amounts of water to maintain grain production. A better understanding of rice drought adaptation and tolerance mechanisms could help to reduce this problem. There is evidence of a possible role of root-associ...

journal_title：PeerJ

authors： Andreo-Jimenez B,Vandenkoornhuyse P,Lê Van A,Heutinck A,Duhamel M,Kadam N,Jagadish K,Ruyter-Spira C,Bouwmeester H

更新日期：2019-09-11 00:00:00

abstract：:Beta-diversity, defined as spatial replacement in species composition, is crucial to the understanding of how local communities assemble. These changes can be driven by environmental or geographic factors (such as geographic distance), or a combination of the two. Spiders have been shown to be good indicators of envir...

journal_title：PeerJ

authors： Rodriguez-Artigas SM,Ballester R,Corronca JA

更新日期：2016-04-21 00:00:00

abstract：:Several aspects of an individual's appearance have been shown to predict personality and related behaviour. While some of these cues are grounded in biology (e.g., the human face), other aspects of a person's appearance can be actively controlled (e.g., clothing). In this paper, we consider a common fashion accessory,...

journal_title：PeerJ

authors： Ellis DA,Jenkins R

更新日期：2015-08-27 00:00:00

abstract：:We explored the genetic background of social interactions in two breeding metapopulations of the pied flycatcher (Ficedula hypoleuca) in Western Siberia. In 2005, we sampled blood from birds breeding in study areas located in the city of Tomsk and in a natural forest 13 km southward of Tomsk (Western Siberia, Russia)....

journal_title：PeerJ

authors： Grinkov VG,Bauer A,Gashkov SI,Sternberg H,Wink M

更新日期：2018-12-06 00:00:00

abstract：:The phylum Actinobacteria constitutes one of the largest and anciently divergent phyla within the Bacteria domain. Actinobacterial diversity has been thoroughly researched in various environments due to its unique biotechnological potential. Such studies have focused mostly on soil communities, but more recently marin...

journal_title：PeerJ

authors： Arocha-Garza HF,Canales-Del Castillo R,Eguiarte LE,Souza V,De la Torre-Zavala S

更新日期：2017-05-02 00:00:00

abstract：:We describe Atrimitra isolata sp. n. (Gastropoda: Mitridae), collected on the summit of seamounts (~200 m water depth) in the vicinity of Desventuradas Islands, Chile insular territory. Additionally, we provide some insight into the habitat of this new species based on underwater imagery taken with a remotely operated...

journal_title：PeerJ

authors： Sellanes J,Salisbury RA,Tapia JM,Asorey CM

更新日期：2019-12-20 00:00:00

abstract：BACKGROUND:VSEARCH is an open source and free of charge multithreaded 64-bit tool for processing and preparing metagenomics, genomics and population genomics nucleotide sequence data. It is designed as an alternative to the widely used USEARCH tool (Edgar, 2010) for which the source code is not publicly available, algo...

journal_title：PeerJ

authors： Rognes T,Flouri T,Nichols B,Quince C,Mahé F

更新日期：2016-10-18 00:00:00

abstract：:Community decline is often linked to anthropogenic activities. Coral reef declines, for example, have been linked to overfishing and climate change, but impacts of coastal development, pollution, and tourism have received increasing attention. Here, we isolated the impact of one little-studied aspect of recreational a...

journal_title：PeerJ

authors： Flynn RL,Forrester GE

更新日期：2019-05-23 00:00:00

abstract：:Elucidating the molecular mechanism of helix-coil transitions of short peptides is a long-standing conundrum in physical chemistry. Although the helix-coil transitions of poly-glutamic acid (PGA) have been extensively studied, the molecular details of its unfolding process still remain unclear. We performed all-atom c...

journal_title：PeerJ

authors： Ogasawara N,Kasahara K,Iwai R,Takahashi T

更新日期：2018-05-15 00:00:00

abstract：:The maximum likelihood estimation (MLE) method, typically used for polytomous logistic regression, is prone to bias due to both misclassification in outcome and contamination in the design matrix. Hence, robust estimators are needed. In this study, we propose such a method for nominal response data with continuous cov...

journal_title：PeerJ

authors： Wang X

更新日期：2014-07-01 00:00:00

abstract：Background:Fatigue influences athletic performance and can also increase the risk of injury in sports, and most of the methods to evaluate it require an additional voluntary effort. Tensiomyography (TMG), which uses electrical stimulation and a displacement sensor to evaluate muscle contraction properties of one or mor...

journal_title：PeerJ

authors： Martín-San Agustín R,Medina-Mirapeix F,Casaña-Granell J,García-Vidal JA,Lillo-Navarro C,Benítez-Martínez JC

更新日期：2020-02-28 00:00:00

abstract：Background:Efficient communication requires that signals are well transmitted and perceived in a given environment. Natural selection therefore drives the evolution of different signals in different environments. In addition, environmental heterogeneity at small spatial or temporal scales may favour phenotypic plastici...

journal_title：PeerJ

authors： Wright DS,Rietveld E,Maan ME

更新日期：2018-01-03 00:00:00

abstract：Background:Lumbar spinal stenosis (LSS) is a common cause of low back pain with degenerative spinal change in older adults. Telomeres are repetitive nucleoprotein DNA sequences of TTAGGG at the ends of chromosomes. Oxidative stress originates from an imbalance in pro-oxidant and antioxidant homeostasis that results in ...

journal_title：PeerJ

authors： Dechsupa S,Yingsakmongkol W,Limthongkul W,Singhatanadgige W,Honsawek S

更新日期：2018-08-09 00:00:00

abstract：:In contrast to reports of wild primates, studies of captive primates' flexibility often reveal conservatism: individuals are unable to switch to new and more efficient strategies when task demands change. We propose that such conservatism might be a result of task design and hypothesize that conservatism might be link...

journal_title：PeerJ

authors： Jacobson SL,Hopper LM

更新日期：2019-01-08 00:00:00

abstract：Background:BRCA1 and BRCA2 genes are currently proven to be closely related to high lifetime risks of breast cancer. To date, the closely related genes to BRCA1/2 mutations in breast cancer remains to be fully elucidated. This study aims to identify the gene expression profiles and interaction networks influenced by BR...

journal_title：PeerJ

authors： Li Y,Zhou X,Liu J,Yin Y,Yuan X,Yang R,Wang Q,Ji J,He Q

更新日期：2020-01-21 00:00:00

abstract：:Mutations that cause an error in the splicing of a messenger RNA (mRNA) can lead to diseases in humans. Various computational models have been developed to recognize the sequence pattern of the splice sites. In recent studies, Convolutional Neural Network (CNN) architectures were shown to outperform other existing mod...

journal_title：PeerJ

authors： Thanapattheerakul T,Engchuan W,Chan JH

更新日期：2020-07-06 00:00:00

abstract：:Acontia, located in the gastrovascular cavity of anemone, are thread-like tissue containing numerous stinging cells which serve as a unique defense tissue against predators of the immobile acontiarian sea anemone. Although its morphology and biological functions, such as defense and digestion, have been studied, the d...

journal_title：PeerJ

authors： Lam J,Cheng YW,Chen WU,Li HH,Chen CS,Peng SE

更新日期：2017-02-21 00:00:00

abstract：:We studied the impact of simulated global change on a high alpine meadow plant community. Specifically, we examined whether short-term (5 years) responses are good predictors for medium-term (7 years) changes in the system by applying a factorial warming and nutrient manipulation to 20 plots in Latnjajaure, subarctic ...

journal_title：PeerJ

authors： Alatalo JM,Little CJ,Jägerbrand AK,Molau U

更新日期：2014-05-22 00:00:00

abstract：:Jatropha curcas L. belongs to Euphorbiaceae family, and it synthesizes flavonoid and diterpene compounds that have showed antioxidant, anti-inflammatory, anticancer, antiviral, antimicrobial, antifungal and insecticide activity. Seeds of this plant accumulate phorbol esters, which are tigliane type diterpenes, reporte...

journal_title：PeerJ

authors： Leyva-Padrón G,Vanegas-Espinoza PE,Evangelista-Lozano S,Del Villar-Martínez AA,Bazaldúa C

更新日期：2020-11-11 00:00:00

abstract：:The Hydroporus memnonius species group includes both widespread and range restricted diving beetle taxa in the western Palaearctic, some of which have been divided into a number of geographical subspecies. Of these, Hydroporus necopinatus is distributed in the far west of Europe, from central Spain to southern Britain...

journal_title：PeerJ

authors： Bilton DT,Turner L,Foster GN

更新日期：2017-03-09 00:00:00

abstract：:Rhizoctonia solani causes the disease peanut sheath blight, involving symptoms of maceration and necrosis of infected tissue, mainly caused by cell-wall-degrading enzymes (CWDEs). This study investigated the production of CWDEs including polygalacturonase (PG), polymethyl-galacturonase (PMG), cellulase (Cx) and β-gluc...

journal_title：PeerJ

authors： Xue CY,Zhou RJ,Li YJ,Xiao D,Fu JF

更新日期：2018-09-05 00:00:00

abstract：:It is deemed important to understand cetacean occurrence and distribution to comprehend their ecological roles. The geographical occurrence of species' niche can be used to better describe their potential distribution. The niche can be defined using environmental variables. Those variables are considered static and no...

journal_title：PeerJ

authors： Figueiredo GCE,do Amaral KB,Santos MCO

更新日期：2020-10-05 00:00:00

abstract：:Flies use specialized photoreceptors R7 and R8 in the dorsal rim area (DRA) to detect skylight polarization. R7 and R8 form a tiered waveguide (central rhabdomere pair, CRP) with R7 on top, filtering light delivered to R8. We examine how the division of a given resource, CRP length, between R7 and R8 affects their abi...

journal_title：PeerJ

authors： Heras FJ,Laughlin SB

更新日期：2017-01-12 00:00:00

abstract：:Marine sponges host complex microbial consortia that vary in their abundance, diversity and stability amongst host species. While our understanding of sponge-microbe interactions has dramatically increased over the past decade, little is known about how sponges and their microbial symbionts interact with viruses, the ...

journal_title：PeerJ

authors： Pascelli C,Laffy PW,Kupresanin M,Ravasi T,Webster NS

更新日期：2018-10-17 00:00:00

abstract：Aims:The study aimed to explore factors contributing to body weight change over time in gastric cancer patients after gastrectomy, in order to find risk factors to implement nutritional intervention beforehand. Methods:A cohort of gastric cancer patients who were treated with gastrectomy from January to March 2019 at ...

journal_title：PeerJ

authors： Tian Q,Qin L,Zhu W,Xiong S,Wu B

更新日期：2020-07-10 00:00:00

abstract：:The expansion of the wind energy industry has had benefits in terms of increased renewable energy production but has also led to increased mortality of migratory bats due to interactions with wind turbines. A key question that could guide bat-related management activities is identifying the geographic origin of bats k...

journal_title：PeerJ

authors： Wieringa JG,Nagel J,Nelson DM,Carstens BC,Gibbs HL

更新日期：2020-10-19 00:00:00