13 documents found, page 1 of 2

Effects of nematicidal phytochemicals on potato germination

Plant parasitic nematodes are responsible for significant productivity losses in the potato crop. Among them, the root lesion nematodes (RLN), ranks 3rd in terms of induced damage. Integrated in a wider study that aims to replace the common application of synthetic compounds for the control of potato nematodes by environment safe plant secondary metabolites, this study intended to evaluate potato seed germinati...

Phytochemicals as Biopesticides against the Pinewood Nematode Bursaphelenchus x...

The impacts of a rapidly changing environment together with the growth in global trade activities has promoted new plant pest pandemic events in forest ecosystems. The pinewood nematode (PWN), Bursaphelenchus xylophilus, causes strong worldwide economic and ecological impacts. Direct control is performed through trunk injection of powerful nematicides, however many of these (hemi)synthetic compounds have raised...

An anaphase surveillance mechanism prevents micronuclei formation from frequent...

Micronuclei are a hallmark of cancer and several other human disorders. Recently, micronuclei were implicated in chromothripsis, a series of massive genomic rearrangements that may drive tumor evolution and progression. Here, we show that Aurora B kinase mediates a surveillance mechanism that integrates error correction during anaphase with spatial control of nuclear envelope reassembly to prevent micronuclei f...

Microtubule end conversion mediated by motors and diffusing proteins with no in...

Accurate chromosome segregation relies on microtubule end conversion, the ill-understood ability of kinetochores to transit from lateral microtubule attachment to durable association with dynamic microtubule plus-ends. The molecular requirements for this conversion and the underlying biophysical mechanisms are elusive. We reconstituted end conversion in vitro using two kinetochore components: the plus end–direc...

In vitro co-culture of Solanum tuberosum hairy roots with Meloidogyne chitwoodi...

Meloidogyne spp., commonly known as root- knot nematodes (RKNs), are economically important plant sedentary endoparasites that cause galls on susceptible hosts. The Columbia root-knot nematode (CRKN), M. chitwoodi, is a quarantine A2 type pest by the European and Mediterranean Plant Protection Organization since 1998. This nematode has been found associated with economi- cally important crops such as potato and...

Control of the pinewood nematode Bursaphelenchus xylophilus by essential oils a...

The pinewood nematode (PWN), Bursaphelenchus xylophilus, is a serious threat to forest ecosystems at a global scale. The nematode has become a major quarantine problem due to its capability to completely destroy Pinus spp. trees, with great damage to the wood industry. Controlling the nematode inside a living tree is quite difficult, the techniques used being often ineffective and quite expensive. In the coming...

Nematoxic effect of essential oils and their fractions against the pinewood nem...

The pinewood nematode (PWN) Bursaphelenchus xylophilus is a highly pathogenic plant parasite that greatly affects pine forests. In Portugal, the most affected species is Pinus pinaster Aiton. Despite great efforts, since its fist detection in 1999, the PWN has spread through the country, including Madeira Island, having been recently detected in Spain [1,2]. Containing this pest is of the utmost importance for ...

Prognóstico Obstétrico de Pacientes Portadoras de Diabetes Mellitus Pré-Gestaci...

OBJETIVO: Avaliar as alterações epidemiológicas, de perfil clínico e de prognóstico obstétrico em pacientes portadoras de diabetes mellitus pré-gestacional. MÉTODOS: Estudo retrospetivo (coorte) de todas as gestações simples, com diagnóstico de diabetes prévio que foram seguidas num centro com apoio perinatal diferenciado entre 2004 e 2011 (n=194). Analisaram-se tendências relacionadas com dados demográficos e ...

Bartholin's Gland Cysts: Management with Carbon-Dioxide Laser Vaporization

OBJETIVO: Avaliar a eficácia, a taxa de recorrência e as complicações da vaporização laser com CO2 no tratamento dos cistos da glândula de Bartholin. MÉTODOS: Estudo retrospectivo com 127 pacientes que apresentavam cistos sintomáticos da glândula de Bartholin submetidas à vaporização laser CO2 na nossa instituição de janeiro de 2005 a junho de 2011. Foram excluídas todas as pacientes com abcessos da glândula de...

Antibacterial and antifungal activity of essential oils of Thymbra capitata gro...