scholarly journals Contribuição ao estudo de insetos (Arthropoda: Insecta) associados ao gênero Ixora L. (Angiospermae: Rubiaceae) no Brasil

2015 ◽  
Vol 21 (2) ◽  
pp. 161
Author(s):  
Thiago Dias Trindade ◽  
Liliane Kiffer Figueira do Nascimento ◽  
Ana Carolina Muniz
Keyword(s):  
Bemisia Tabaci ◽  
Ornamental Plants ◽  
Ornamental Plant ◽  
Future Studies ◽  
Toxoptera Citricida ◽  
First Time ◽  
Chrysomphalus Aonidum ◽  
Aspidiotus Destructor

This study aimed to register insects (Arthropoda: Insecta) associated with genus Ixora L. (Angiospermae: Rubiaceae) and contribute the knowledge about this popular tropical ornamental plant in Brazil. For this study, we detected the presence of insects in solid or isolated plants of Ixora spp., and greenhouses, between the period 2004 and 2012. It was pointed out for the first time on I. chinensis Lam.: Syntermes dirus (Burmeister, 1839) (Isoptera: Termitidae), Aspidiotus destructor (Signoret, 1869) and Chrysomphalus aonidum (Linnaeus, 1758) (Hemiptera: Diaspididae), Praelongorthezia praelonga (Douglas, 1891) (Hemiptera: Ortheziidae) and Camponotus sp. (Hymenoptera: Formicidae). Studies registered for the first time on I. coccinea L.: Aleurothrixus aepim (Goeldi, 1886) and Bemisia tabaci (Gennadius, 1889) (Hemiptera: Aleyrodidae) Eucalymnatus sp., Parasaissetia nigra (Nietner, 1861) and Saissetia olae (Olivier, 1791) (Hemiptera: Coccidae), and Camponotus sp. It was observed first on I. macrothyrsa Teijsm. & Binn.) N. E. Br.: Aleurothrixus floccosus (Maskell, 1895), Aleurotrachelus sp. (Aleyrodidae), Aphis (Toxoptera) citricida (Kirkaldy, 1907) and Myzus (Nectarosiphon) persicae (Sulzer, 1778) (Hemiptera: Aphididae) Harmonia sp. (Coleoptera: Coccinellidae), Camponotus sp. This paper contributes to the study of these important ornamental plants, presenting for the first time a list of associated insects. This work also creates conditions for future studies.

scholarly journals (17) TRAP Markers Help Categorizea Pelargonium Collection

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1067C-1067
Author(s):  
Rose Palumbo ◽  
Wai-Foong Hong ◽  
Jinguo Hu ◽  
Charles Krause ◽  
David Tay ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
High Throughput ◽  
Target Genes ◽  
Large Population ◽  
Ornamental Plants ◽  
Ornamental Plant ◽  
High Quality ◽  
Target Region ◽  
Future Studies ◽  
Loss Of Genetic Diversity

The Ornamental Plant Germplasm Center (OPGC) maintains a collection of herbaceous ornamental plants in order to protect future breeders from a loss of genetic diversity. The current Pelargonium collection includes ≈870 accessions. Our preliminary studies showed that TRAP (Target Region Amplified Polymorphism) has promise for analyzing the variation in our collection, and so we have expanded the study to analyze the entire Pelargonium collection. We have used the same primers for this screening of the Pelargonium collection as were used on sunflowers, and TRAP results run on a sequencing gel showed 90–150 bands that segregate the population into groups of similar accessions. In order to facilitate analysis of OPGC's large population, we have converted the method to a high throughput technique that efficiently analyzed the entire population. We used a 96-well DNA extraction kit from Qiagen that produced high quality DNA in spite of the high phenol levels in some Pelargonium species. Also, the use of labeled primers allowed analysis of the gels to be aided by a computer. These results produce a categorization of the collection that, combined with morphology and taxonomy, will form the basis for future studies that will use target genes specific to Pelargonium.

scholarly journals Whitefly (Bemisia tabaci) Management Program for Ornamental Plants

EDIS ◽  
2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Muhammad Ahmed ◽  
Lance Osborne ◽  
Vivek Kumar ◽  
Cindy McKenzie ◽  
Cristi Palmer
Keyword(s):  
Invasive Species ◽  
Insecticide Resistance ◽  
Plant Species ◽  
Bemisia Tabaci ◽  
Ornamental Plants ◽  
Management Program ◽  
Ornamental Plant ◽  
Silverleaf Whitefly ◽  
Plant Materials ◽  
Selection For

Bemisia tabaci (Gennadius), commonly known as silverleaf whitefly, is a polyphagous pest and listed as one of the world’s 100 worst invasive species. It is known to feed on more than 1000 plant species and vector over 120 plant-damaging viruses. This publication provides a management program for nursery and ornamental plant growers to aid in their efforts to minimize selection for insecticide resistance irrespective of whitefly biotype while helping to achieve top-quality plant materials.

scholarly journals Diversity of pathogenic Pseudomonas isolated from citrus in Tunisia

AMB Express ◽  
2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Maroua Oueslati ◽  
Magdalena Mulet ◽  
Mohamed Zouaoui ◽  
Charlotte Chandeysson ◽  
Jorge Lalucat ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Pseudomonas Syringae ◽  
Ice Nucleation ◽  
Phylogenetic Study ◽  
Future Studies ◽  
Citrus Orchards ◽  
First Time ◽  
New Cultivars

Abstract The damages observed in Tunisian citrus orchards have prompted studies on the Pseudomonas spp. responsible for blast and black pit. Prospective orchards between 2015 and 2017 showed that the diseases rapidly spread geographically and to new cultivars. A screening of Pseudomonas spp. isolated from symptomatic trees revealed their wide diversity according to phylogenetic analysis of their housekeeping rpoD and cts genes. The majority of strains were affiliated to Pseudomonas syringae pv. syringae (Phylogroup PG02b), previously described in Tunisia. However, they exhibited various BOX-PCR fingerprints and were not clonal. This work demonstrated, for the first time in Tunisia, the involvement of Pseudomonas cerasi (PG02a) and Pseudomonas congelans (PG02c). The latter did not show significant pathogenicity on citrus, but was pathogenic on cantaloupe and active for ice nucleation that could play a role in the disease. A comparative phylogenetic study of citrus pathogens from Iran, Montenegro and Tunisia revealed that P. syringae (PG02b) strains are closely related but again not clonal. Interestingly P. cerasi (PG02a) was isolated in two countries and seems to outspread. However, its role in the diseases is not fully understood and it should be monitored in future studies. The diversity of pathogenic Pseudomonas spp. and the extension of the diseases highlight that they have become complex and synergistic. It opens questions about which factors favor diseases and how to fight against them efficiently and with sustainable means.

scholarly journals Metagenomic Comparisons between Soft and Hard Feces of Plateau Pikas (Ochotona curzoniae)

Animals ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 149
Author(s):  
Haibo Fu ◽  
Wenjing Li
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
16S Rdna ◽  
Microbial Metabolism ◽  
Short Chain Fatty Acids ◽  
Short Chain ◽  
Future Studies ◽  
Ochotona Curzoniae ◽  
The Future ◽  
First Time

The division of hard and soft feces is an effective digestion strategy in the order Lagomorpha. Although previous studies have reported that hard and soft feces differ in morphology and component, the discrepancy in the microbiome remains unclear. This study explored the microbiomes of hard and soft feces in plateau pikas by sequencing the V3 and V4 regions of 16S rDNA. We found that hard feces harbored higher Firmicutes, while soft feces harbored higher Akkermansia. Increased rare bacterial taxa were observed in hard feces compared with soft feces. Moreover, hard and soft feces displayed a greater difference in terms of core operational taxonomy units (OTUs) compared to the total OTUs. The soft feces showed enhancements in all predicted Kyoto Encyclopedia of Genes and Genomes (KEGG) functions, indicating an advancing microbial metabolism compared to hard feces. The significantly upregulated pathways in soft feces were mainly enriched in metabolism of energy and carbohydrate, glycan biosynthesis, cofactors and vitamins, and amino acids—all of which are associated with increased contents of microbial proteins, vitamins, and short-chain fatty acids. Our study reports, for the first time, the differential microbiomes between hard and soft feces of pikas and provides direction for the future studies on cecotrophy.

scholarly journals Potential natural enemies of the invasive rugose spiraling whitefly, Aleurodicus rugioperculatus Martin in India

2017 ◽  
Vol 30 (4) ◽  
pp. 236 ◽  
Author(s):  
K. Selvaraj ◽  
R. Sundararaj ◽  
T. Venkatesan ◽  
Chandish R. Ballal ◽  
S. K. Jalali ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Tamil Nadu ◽  
Ornamental Plants ◽  
Coi Gene ◽  
Molecular Diagnostic ◽  
Pest Species ◽  
Molecular Tools ◽  
Accession Number ◽  
Custard Apple ◽  
First Time

A invasive rugose spiraling whitefly (RSW) <em>Aleurodicus rugioperculatus</em> Martin (Hemiptera: Aleyrodidae) was found infesting coconut, banana, custard apple and several ornamental plants in Tamil Nadu, Andhra Pradesh and Kerala for the first time in India. The identity of the pest species was determined through morphological and molecular tools. Furthermore cytochrome c oxidase-I gene (658 bp) of RSW was sequenced (GenBank accession number KY209909) which would serve as an ideal molecular diagnostic marker for its identification irrespective of its phenotypic plasticity. During the survey, several natural enemies were recorded and maximum parasitism was recorded by <em>Encarsia guadeloupae</em> Viggiani (Hymenoptera: Aphelinidae) and its COI gene was sequenced and deposited as <em>Encarsia</em> sp. (GenBank accession number KY223606). Per cent parasitism ranged from 20.0 to 60.0 % in different collection locations, highest parasitism being recorded in Kerala as compared to other states. The predators recorded were <em>Mallada</em> sp., few coccinellids and predatory mites. This communication is the first report of the rugose spiraling whitefly, its host plant range and associated natural enemies in India.

scholarly journals PENGARUH MODAL KERJA DAN LAMA USAHA TERHADAP PENDAPATAN USAHA TANAMAN HIAS DI DESA PETIGA KECAMATAN MARGA KABUPATEN TABANAN

GANEC SWARA ◽  
2019 ◽  
Vol 13 (2) ◽  
pp. 280
Author(s):  
NI PUTU SUDARSANI
Keyword(s):  
Ornamental Plants ◽  
Analytical Tool ◽  
Ornamental Plant ◽  
Multiple Linear Regressions ◽  
Working Capital ◽  
Independent Variables ◽  
Level Of Significance ◽  
Linear Regressions ◽  
Two Independent Variables

   This study aims to determine the effect of working capital and business variables on the income of ornamental plant business in Petiga Village, Marga District, Tabanan Regency. This study takes a sample of 64 respondents. The analytical tool used is multiple linear regressions.   Based on the results of the calculation of SPSS 22.00, the calculated F value is 31,088 with a significance of F of 0,000. By using a 0.05 level of significance obtained F table value of 3.15, then F count (31.088)> F table (3.15), or the significance of F of 0.000 shows smaller than 0.05 so it can be concluded that the two independent variables i.e. working capital and length of business jointly influence the amount of income of ornamental plant business in Petiga Village, Marga Subdistrict, Tabanan Regency is accepted. Partially the working capital variable has a significant effect. While the duration of business influences the income of the business of ornamental plants in Petiga Village, Marga District, Tabanan Regency, but it is not significant

scholarly journals Expanded Range of Cylindrocladium colhounii in the United States

Plant Disease ◽  
1997 ◽  
Vol 81 (11) ◽  
pp. 1333-1333 ◽  
Author(s):  
N. E. El-Gholl ◽  
T. S. Schubert ◽  
S. E. Walker ◽  
J. K. Stone
Keyword(s):  
Room Temperature ◽  
The United States ◽  
Ornamental Plant ◽  
Leaf Spots ◽  
Leaf Surfaces ◽  
Symptomatic Tissue ◽  
First Time ◽  
Gaultheria Procumbens ◽  
Callistemon Rigidus ◽  
The U.S

Plant pathologists in Florida and Oregon have recently found Cylindrocladium colhounii for the first time on two new ornamental plant species. Brown, pinpoint leaf spots were observed on Callistemon rigidus (stiff bottlebrush) in a Florida nursery. C. colhounii was isolated consistently from these lesions. To confirm Koch's postulates, 25 ml of aconidial suspension at 96,000 conidia per ml was used to spray a 38.1-cm branch of C. rigidus. Plants were maintained in a moist chamber at room temperature (25 ± 2°C). Symptoms appeared within 3 days, and included brown, pinpoint spots (1 mm or less) occurring on both leaf surfaces, sunken blotches, and blight. The fungus was consistently reisolated from symptomatic tissue. In Oregon, the first detection of C. colhounii was from leaf spots on Gaultheria procumbens (wintergreen) in a nursery. No proof of pathogenicity was done in Oregon on G. procumbens. C. colhounii has now been reported on 14 host genera in 10 families from Australia, India, Mauritius, South Africa, and the U.S. (FL, HI, LA, NC, OR, SC) (1–4). References: (1) P. W. Crous and M. J. Wingfield. Mycopathologia 122:45, 1993. (2) A. Peerally. Mycotaxon 40:323, 1991. (3) A. Y. Rossman. Mycol. Pap. No. 150, Commonw. Mycol. Inst., Kew, Surrey, England, 1983. (4) J. Y. Uchida and M. Aragaki. Plant Dis. 81:298, 1997.

Irrational happiness beliefs and subjective well-being of undergraduate students: A longitudinal study

2021 ◽  
Vol 5 (1) ◽  
pp. 65-72
Author(s):  
Murat Yıldırım
Keyword(s):  
Negative Affect ◽  
Positive Affect ◽  
Undergraduate Students ◽  
Well Being ◽  
Subjective Well Being ◽  
Future Studies ◽  
Affective Components ◽  
The Impact ◽  
First Time ◽  
Over Time

Identifying factors that influence well-being are fruitful for improving the knowledge held about the correlates and predictors of well-being in both practice and theory. This research for the first time aimed to investigate whether irrational happiness beliefs, a newly presented construct, contribute to the affective components of subjective well-being over time. The sample included 103 undergraduate students (88 females and 15 males) whose ages varied from 18 to 29 years (M = 19.39 ±1.62). Participants completed measures of irrational happiness beliefs, positive affect, and negative affect both at Time 1 and Time 2 over three months apart. The findings showed that irrational happiness beliefs were significantly negatively related to positive affect only at Time 1. However, the research failed to provide evidence regarding the value of irrational happiness beliefs in predicting positive and negative affect over time. The results suggest that the impact of irrational happiness beliefs upon well-being may occur momentarily not over time. Implications and limitations of the findings are discussed and directions for future studies are provided.

scholarly journals A census of the pulsar population observed with the international LOFAR station FR606 at low frequencies (25–80 MHz)

2020 ◽  
Vol 635 ◽  
pp. A76 ◽  
Author(s):  
L. Bondonneau ◽  
J.-M. Grießmeier ◽  
G. Theureau ◽  
A. V. Bilous ◽  
V. I. Kondratiev ◽  
...  
Keyword(s):  
Low Frequency ◽  
Frequency Range ◽  
Radio Pulsars ◽  
Low Frequencies ◽  
Radio Observatory ◽  
Future Studies ◽  
New Information ◽  
Upper Limits ◽  
Widespread Phenomenon ◽  
First Time

Context. To date, only 69 pulsars have been identified with a detected pulsed radio emission below 100 MHz. A LOFAR-core LBA census and a dedicated campaign with the Nançay LOFAR station in stand-alone mode were carried out in the years 2014–2017 in order to extend the known population in this frequency range. Aims. In this paper, we aim to extend the sample of known radio pulsars at low frequencies and to produce a catalogue in the frequency range of 25–80 MHz. This will allow future studies to probe the local Galactic pulsar population, in addition to helping explain their emission mechanism, better characterising the low-frequency turnover in their spectra, and obtaining new information about the interstellar medium through the study of dispersion, scattering, and scintillation. Methods. We observed 102 pulsars that are known to emit radio pulses below 200 MHz and with declination above −30°. We used the Low Band Antennas (LBA) of the LOw Frequency ARray (LOFAR) international station FR606 at the Nançay Radio Observatory in stand-alone mode, recording data between 25 and 80 MHz. Results. Out of our sample of 102 pulsars, we detected 64. We confirmed the existence of ten pulsars detected below 100 MHz by the LOFAR LBA census for the first time (Bilous et al. 2020, A&A, 635, A75) and we added two more pulsars that had never before been detected in this frequency range. We provided average pulse profiles, DM values, and mean flux densities (or upper limits in the case of non-detections). The comparison with previously published results allows us to identify a hitherto unknown spectral turnover for five pulsars, confirming the expectation that spectral turnovers are a widespread phenomenon.

scholarly journals New invasion of Bemisia tabaci Mediterranean species in Brazil associated to ornamental plants

2017 ◽  
Vol 45 (4) ◽  
pp. 517-525 ◽  
Author(s):  
Letícia Aparecida de Moraes ◽  
Julio Massaharu Marubayashi ◽  
Valdir Atsushi Yuki ◽  
Murad Ghanim ◽  
Vinicius Henrique Bello ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Ornamental Plants ◽  
Mediterranean Species
Sign in / Sign up

Export Citation Format

Share Document