Lasiodiplodia theobromae: A NEW HOST AND A REVISION OF PLANT HOSTS REPORTED IN BRAZIL

2012 ◽  
Vol 24 (1) ◽  
pp. 63-66
Author(s):  
Nadja Santos Vitoria ◽  
Maria Auxiliadora Q. Cavalcanti ◽  
José Luiz Bezerra
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Bin Tian ◽  
Frederick E. Gildow ◽  
Andrew L. Stone ◽  
Diana J. Sherman ◽  
Vernon D. Damsteegt ◽  
...  

Abstract Many RNA viruses have genetically diverse populations in a single host. Important biological characteristics may be related to the levels of diversity, including adaptability, host specificity, and host range. Shifting the virus between hosts might result in a change in the levels of diversity associated with the new host. The level of genetic diversity for these viruses is related to host, vector and virus interactions, and understanding these interactions may facilitate the prediction and prevention of emerging viral diseases. It is known that luteoviruses have a very specific interaction with aphid vectors. Previous studies suggested that there may be a tradeoff effect between the viral adaptation and aphid transmission when Soybean dwarf virus (SbDV) was transmitted into new plant hosts by aphid vectors. In this study, virus titers in different aphid vectors and the levels of population diversity of SbDV in different plant hosts were examined during multiple sequential aphid transmission assays. The diversity of SbDV populations revealed biases for particular types of substitutions and for regions of the genome that may incur mutations among different hosts. Our results suggest that the selection on SbDV in soybean was probably leading to reduced efficiency of virus recognition in the aphid which would inhibit movement of SbDV through vector tissues known to regulate the specificity relationship between aphid and virus in many systems.


ENTOMON ◽  
2020 ◽  
Vol 45 (3) ◽  
pp. 237-238
Author(s):  
J. Nayanathara ◽  
R. Narayana
Keyword(s):  
New Host ◽  

Anthene lycaenina lycaenina (R. Felder, 1868) is reported on mango for the first time.


Author(s):  
Lavinia dos Santos Mascarenhas ◽  
Monica Junqueira Machado ◽  
Noelma de Brito Miranda ◽  
Vânia de Jesus Santos Oliveira ◽  
Pedro Henrique Ribeiro Santana

2019 ◽  
Vol 26 (16) ◽  
pp. 2974-2986 ◽  
Author(s):  
Kwang-sun Kim

Vectors are living organisms that transmit infectious diseases from an infected animal to humans or another animal. Biological vectors such as mosquitoes, ticks, and sand flies carry pathogens that multiply within their bodies prior to delivery to a new host. The increased prevalence of Vector-Borne Diseases (VBDs) such as Aedes-borne dengue, Chikungunya (CHIKV), Zika (ZIKV), malaria, Tick-Borne Disease (TBD), and scrub typhus has a huge impact on the health of both humans and livestock worldwide. In particular, zoonotic diseases transmitted by mosquitoes and ticks place a considerable burden on public health. Vaccines, drugs, and vector control methods have been developed to prevent and treat VBDs and have prevented millions of deaths. However, development of such strategies is falling behind the rapid emergence of VBDs. Therefore, a comprehensive approach to fighting VBDs must be considered immediately. In this review, I focus on the challenges posed by emerging outbreaks of VBDs and discuss available drugs and vaccines designed to overcome this burden. Research into promising drugs needs to be upgraded and fast-tracked, and novel drugs or vaccines being tested in in vitro and in vivo models need to be moved into human clinical trials. Active preventive tactics, as well as new and upgraded diagnostics, surveillance, treatments, and vaccination strategies, need to be monitored constantly if we are to manage VBDs of medical importance.


2012 ◽  
Vol 24 (3) ◽  
pp. 179-182 ◽  
Author(s):  
Cristiane Duarte dos Santos ◽  
Eliana Maria Rocha Sousa ◽  
Eliane Leal Candeias ◽  
Nadja Santos Vitória ◽  
José Luiz Bezerra ◽  
...  

1998 ◽  
Vol 63 (5) ◽  
pp. 622-627 ◽  
Author(s):  
Hidetaka Yuge ◽  
Takayoshi Soma ◽  
Takeshi Ken Miyamoto

Crystals of a new clathrate [CuII(hmtd)CuI(CN)3]·CH2Cl2 were afforded from a Me2CO-EtOH-CH2Cl2 solution of a macrocyclic complex CuII(hmtd)CuI(CN)3·2 H2O (hmtd = 5,7,7,12,14,14-hexamethyl- 1,4,8,11-tetraazacyclotetradeca- 4,11-diene). It crystallizes in the monoclinic space group P21/n, a = 7.936(5), b = 18.717(4), c = 17.783(6) Å, β = 98.55(4)°, Z = 4, R = 0.0558 for 1 870 reflections. Unprecedentedly, only one of the three nitrogen-ends of a CuI(CN)3 moiety is coordinated to the square-pyramidal Cu(II) center. The guest CH2Cl2 molecules are captured in the channel between the potlid-shaped [CuII(hmtd)CuI(CN)3] molecules.


2008 ◽  
Vol 53 (No. 3) ◽  
pp. 97-104 ◽  
Author(s):  
M. Zouhar ◽  
M. Marek ◽  
O. Douda ◽  
J. Mazáková ◽  
P. Ryšánek

<i>Ditylenchus dipsaci</i>, the stem nematode, is a migratory endoparasite of over 500 species of angiosperms. The main method of <i>D. dipsaci</i> control is crop rotation, but the presence of morphologically indistinguishable host races with different host preferences makes rotation generally ineffective. Therefore, a sensitive, rapid, reliable, as well as cost effective technique is needed for identification of <i>D. dipsaci</i> in biological samples. This study describes the development of species-specific pairs of PCR oligonucleotides for detection and identification of the <i>D. dipsaci</i> stem nematode in various plant hosts. Designed DIT-2 primer pair specifically amplified a fragment of 325 bp, while DIT-5 primer pair always produced a fragment of 245 bp in all <i>D. dipsaci</i> isolates. Two developed SCAR primer pairs were further tested using template DNA extracted from a collection of twelve healthy plant hosts; no amplification was however observed. The developed PCR protocol has proved to be quite sensitive and able to specifically detect <i>D. dipsaci</i> in artificially infested plant tissues.


Author(s):  
Mívia Rosa de Medeiros Vichiato ◽  
Marcelo Vichiato ◽  
Percílio Wander da Silva ◽  
Cássia Lafetá do Couto ◽  
Leonardo De Souza Pereira ◽  
...  

Fatores bióticos a abióticos são importantes agentes de declínio de árvores de interesse na arborização urbana. Este trabalho objetivou a investigação dos problemas fitossanitários (desfolhamento e morte progressiva de ramos) apresentados por Ficus microcarpa (Moraceae) localizados no canteiro central da Avenida Bernardo Monteiro, em Belo Horizonte, Minas Gerais, Brasil. Análises entomológicas e amostras de plantas infectadas revelaram que os agentes causadores da queda de folhas e da morte progressiva de ramos dos Ficus microcarpa são, respectivamente, a mosca-branca-dos-fícus - Singhiella simplex (Hemiptera: Aleyrodidae) e o fungo Lasiodiplodia theobromae (Pat.) Griffon & Maubl. (= Botryodiplodia theobromae Pat.).


2019 ◽  
Vol 65 (1) ◽  
Author(s):  
Boshi Zhao ◽  
Zhiming Yu ◽  
Yang Zhang ◽  
Chusheng Qi

AbstractBlue staining on rubberwood (Hevea brasiliensis) is a common kind of defect. There currently exists much research focused on the prevention and control of blue staining. However, little research has been concentrated on the utilization of blue staining for green dyeing. The research conveyed in this paper primarily used Lasiodiplodia theobromae to dye rubberwood, and used scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), X-ray diffraction (XRD), and fourier transform infrared spectrometer (FTIR) to analyze the commission internationale eclairage (CIE) L*a*b* value of color, the contact angle, the pH value, 24-h water absorption, mass loss ratio, and compressive strength in increments between 5 and 40 days. The results found that the color of rubberwood became darker and more uniform, and that the surface dyed with fungi can reach a super-hydrophobic state. With the increase of time, the pH value of rubberwood changed from acidic to alkaline. Furthermore, hyphae entered the wood mainly through vessels for their large pore diameter, and reduced water absorption. Mass loss ratio increased gradually between 5 and 40 days. The research in this paper concludes that the microorganism was an effective method of wood dyeing, and lays a foundation for further research.


Sign in / Sign up

Export Citation Format

Share Document