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-glucosidase by R. solani in vitro (in liquid culture) and in vivo (in peanut plants). Significant PG, PMG, Cx and β-glucosidase activities were detected in infected tissues including stalk and leaves of Baisha and Silihong peanut cultivars. Extracts of healthy tissue showed little or no such activities. In shaken liquid cultures of R. solani in medium containing pectin or pectin plus carboxymethyl cellulose (CMC) as the carbon source(s), PG and PMG were notably active. Significant Cx activity was detected in cultures with CMC or pectin plus CMC as the carbon source(s). However, only a very low level of β-glucosidase activity was observed in cultures with any of the tested carbon sources. An increase of pH was recorded in decayed peanut tissues and liquid culture filtrates; the filtrate pH and fungal growth positively correlated. The fungal growth and/or pH were important factors for the production of PG, PMG and Cx in culture with pectin plus CMC as the carbon source. A single active PG isozyme with isoelectric point around 9.2 was detected in culture filtrates and in infected peanut tissues by the method of isoelectric focusing electrophoresis. The crude enzymes extracted from liquid culture of R. solani induced decay of healthy peanut leaves.
journal_name
PeerJjournal_title
PeerJauthors
Xue CY,Zhou RJ,Li YJ,Xiao D,Fu JFdoi
10.7717/peerj.5580subject
Has Abstractpub_date
2018-09-05 00:00:00pages
e5580issn
2167-8359pii
5580journal_volume
6pub_type
杂志文章相关文献
PeerJ文献大全abstract::Pico and nanoplankton communities from the Southwest Atlantic Ocean along the Brazilian Bight are poorly described. The hydrography in this region is dominated by a complex system of layered water masses, which includes the warm and oligotrophic Tropical Water (TW), the cold and nutrient rich South Atlantic Central Wa...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2587
更新日期:2016-11-10 00:00:00
abstract::Although neonicotinoids are targeted at insects, their predominant use as a seed dressing and their long persistence in soils mean that non-target soil organisms such as earthworms are likely to be chronically exposed to them. Chronic exposure may pose risks that are not evaluated in most toxicity tests. We experiment...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3177
更新日期:2017-04-11 00:00:00
abstract::We point out complications inherent in biodiversity inventory metrics when applied to large-scale datasets. The number of units of inventory effort (e.g., days of inventory effort) in which a species is detected saturates, such that crucial numbers of detections of rare species approach zero. Any rare errors can then ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8872
更新日期:2020-05-13 00:00:00
abstract::Individual movement influences the spatial and social structuring of a population. Animals regularly use the same paths to move efficiently to familiar places, or to patrol and mark home ranges. We found that Australian sleepy lizards (Tiliqua rugosa), a monogamous species with stable pair-bonds, repeatedly used the s...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1844
更新日期:2016-03-22 00:00:00
abstract::RNA sequencing (RNA-Seq) enables the measurement and comparison of gene expression with isoform-level quantification. Differences in the effect of each isoform may make traditional methods, which aggregate isoforms, ineffective. Here, we introduce a variance component-based test that can jointly test multiple isoforms...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3797
更新日期:2017-09-08 00:00:00
abstract::The presence of fatigue has been shown to modify running biomechanics. Overall in terms of gender, women are at lower risk than men for sustaining running-related injuries, although it depends on the factors taken into account. One possible reason for these differences in the injury rate and location might be the diss...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4489
更新日期:2018-03-20 00:00:00
abstract::Heterotrophic plants-plants that have lost the ability to photosynthesize-are characterized by a number of changes at all levels of organization. Heterotrophic plants are divided into two large categories-parasitic and mycoheterotrophic (MHT). The question of to what extent such changes are similar in these two catego...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.9309
更新日期:2020-06-19 00:00:00
abstract::The Asian citrus psyllid (ACP), Diaphorina citri Kuwayama, is one of the most serious citrus pests worldwide due to its role as vector of huanglongbing or citrus greening disease. While some optimal plant species for ACP oviposition and development have been identified, little is known of the influence of host plants ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2663
更新日期:2016-11-03 00:00:00
abstract::Pathogens invading the mammary gland are recognized through a range of pattern recognition receptors (PRRs), residing on the plasma membrane of mammary epithelial cells. Toll-like receptor 2 (TLR2) signalling is responsible for recognition of Gram-positive bacteria, which are the most common mastitis-causing pathogens...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7340
更新日期:2019-07-31 00:00:00
abstract::Cytokines are fundamental for a functioning immune system, and thus potentially serve as important indicators of animal health. Quantitation of mRNA using quantitative reverse transcription polymerase chain reaction (qRT-PCR) is an established immunological technique. It is particularly suitable for detecting the expr...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3840
更新日期:2017-09-27 00:00:00
abstract::Weevils (Coleoptera: Curculionoidea) represent one of the most diverse groups of organisms on Earth; interactions with their host plants have been recognized to play a central role in their remarkable diversity, yet the exact mechanisms and factors still remain poorly understood. Using phylogenetic comparative analyse...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6625
更新日期:2019-03-20 00:00:00
abstract::Okinawa is the largest and most populated island of the Ryukyu Archipelago in southern Japan and is renowned for its natural resources and beauty. Similar as to what has been happening in the rest of the country, Okinawa Island has been affected by an increasing amount of development and construction work. The trend h...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7520
更新日期:2019-09-06 00:00:00
abstract::The mitochondrial genome (mitogenome) sequence of the tree frog Polypedates megacephalus (16,473 bp) was previously reported as having the unusual characteristic of lacking the ND5 gene. In this study, a new mitogenome of P. megacephalus (19,952 bp) was resequenced using the next-generation sequencing (NGS) and standa...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7415
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:Individuals with mental illness often experience stigmatization and encounter stereotypes such as being dangerous or unpredictable. To further improve measures against psychiatric stigma, it is of importance to understand its components. In this study, we attend to the step of separation between "us" and "th...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2360
更新日期:2016-09-27 00:00:00
abstract:Background:Weight management interventions involving behaviour change often utilise face to face interventions which include evidence based behaviour change strategies yet are costly and time intensive. In contrast, digital interventions cost less and have a wider reach yet tend to lack an evidence base and are less ef...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.6907
更新日期:2019-05-15 00:00:00
abstract::Conservation initiatives to protect and restore valued species communities in human-dominated landscapes face challenges linked to their potential costs. Conservation easements on private land may represent a cost-effective alternative to land purchase, but long-term costs to monitor and enforce easements, or defend l...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.1185
更新日期:2015-08-13 00:00:00
abstract::Protoporphyrin (PP) and biliverdin (BV) give rise to the enormous diversity in avian egg coloration. Egg color serves several ecological purposes, including post-mating signaling and camouflage. Egg camouflage represents a major character of open-nesting birds which accomplish protection of their unhatched offspring a...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.3706
更新日期:2017-08-29 00:00:00
abstract::Hydrozoa medusae undergo blooms and seasonal fluctuations; however the drivers of such fluctuations are unknown. To understand how medusa populations fluctuate in response to seasonal factors such as temperature, salinity, dissolved oxygen, and chlorophyll a, and to enhance our taxonomic knowledge of Hydrozoa in Galve...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7848
更新日期:2019-10-08 00:00:00
abstract::[This corrects the article DOI: 10.7717/peerj.4736.]. ...
journal_title:PeerJ
pub_type: 杂志文章,已发布勘误
doi:10.7717/peerj.4736/correction-1
更新日期:2018-08-23 00:00:00
abstract::Biodiversity forecasts are important for conservation, management, and evaluating how well current models characterize natural systems. While the number of forecasts for biodiversity is increasing, there is little information available on how well these forecasts work. Most biodiversity forecasts are not evaluated to ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4278
更新日期:2018-02-08 00:00:00
abstract::This paper investigates the capabilities of the evolutionary fuzzy genetic (FG) approach and compares it with three neuro-fuzzy methods-neuro-fuzzy with grid partitioning (ANFIS-GP), neuro-fuzzy with subtractive clustering (ANFIS-SC), and neuro-fuzzy with fuzzy c-means clustering (ANFIS-FCM)-in terms of modeling long-...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8882
更新日期:2020-08-14 00:00:00
abstract::Finite Element Analysis (FEA) is a useful method for understanding form and function. However, modelling of fossil taxa invariably involves assumptions as a result of preservation-induced loss of information in the fossil record. To test the validity of predictions from FEA, given such assumptions, these results could...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.4426
更新日期:2018-02-26 00:00:00
abstract:BACKGROUND:Cancer research is a national and international priority, with the efficiency and effectiveness of current anti-tumor therapies being one of the major challenges with which physicians are faced. OBJECTIVE:To assess the impact of exposure to tobacco smoke, arsenic, and phthalates on cervical cancer treatment...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2448
更新日期:2016-09-08 00:00:00
abstract:Background:Autonomous Sensory Meridian Response (ASMR) is a sensory experience elicited by auditory and visual triggers, which so far received little attention from the scientific community. This self-reported phenomenon is described as a relaxing tingling sensation, which typically originates on scalp and spreads thro...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5351
更新日期:2018-08-06 00:00:00
abstract::Esophageal cancer is a common malignant tumor in the world, and the aim of this study was to screen key genes related to the development of esophageal cancer using a variety of bioinformatics analysis tools and analyze their biological functions. The data of esophageal squamous cell carcinoma from the Gene Expression ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.8831
更新日期:2020-03-31 00:00:00
abstract::The study investigates the solution of the multicollinearity between certain body measurements of Romanov lambs and prediction of the body weight of Romanov lambs using the thus calculated factor analysis scores and a multiple regression model. For this purpose, the body measurements (wither height (WH), croup height ...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7434
更新日期:2019-08-01 00:00:00
abstract::Molt summary tables reveal the sequence and mode of flight-feather replacement and how these feathers are divided into independent replacement series. Tables for summarizing molt are relatively new, and the rules for generating them were first formally illustrated using data from a temperate passerine. However, this f...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.5499
更新日期:2018-09-07 00:00:00
abstract::According to the intelligence-creativity threshold hypothesis, there should be a positive association between intelligence and creative potential up to a certain point, the threshold, after which a further increase in intelligence should have no association with creativity. In the present simulation study, the measure...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7891
更新日期:2019-10-21 00:00:00
abstract:Background:Sepsis represents a significant healthcare problem worldwide and causes a high number of deaths every year but remains to be fully understood. During and after sepsis, the host immune response is complex and involves an initial excessive host inflammatory response to infection that is closely related to tiss...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.7116
更新日期:2019-06-17 00:00:00
abstract::One of the major challenges of bone tissue engineering applications is to construct a fully vascularized implant that can adapt to hypoxic environments in vivo. The incorporation of proangiogenic factors into scaffolds is a widely accepted method of achieving this goal. Recently, the proangiogenic potential of mesench...
journal_title:PeerJ
pub_type: 杂志文章
doi:10.7717/peerj.2040
更新日期:2016-05-19 00:00:00