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Featured researches published by Ailton R. Monteiro.


Fitopatologia Brasileira | 2001

Effect of population densities of Pratylenchus brachyurus on the growth of cotton plants

Mário M. Inomoto; Alexandre Moura Cintra Goulart; Andressa C. Z. Machado; Ailton R. Monteiro

The effect of different population densities of Pratylenchus brachyurus on the growth of cotton (Gossypium hirsutum) plants was studied in three greenhouse experiments, using cultivars IAC 20 and IAC 22. Both cultivars proved to be good hosts to the nematode, which however did not affect plant height and affected only slightly fresh root weight and dry top weight of both cultivars, even at the highest population density (over 9,000 nematodes/plant).


Nematology | 2004

Molecular and morphometric analyses of Xiphidorus species (Nematoda: Longidoridae)

Claudio M. G. Oliveira; Luiz Carlos C. B. Ferraz; Ailton R. Monteiro; Brian Fenton; G. Malloch; R. Neilson

Xiphidorus nematodes are indigenous to Latin America and have a restricted geographical distribution compared to Xiphinema. A principal component analysis (PCA) based on eight morphometric characters from 39 South American populations clearly separated populations previously identified as X. achalae, X. amazonensis, X. minor, X. saladillensis and X. uruguayensis and three undescribed Xiphidorus species. However, populations identified as X. balcarceanus, X. parthenus and X. yepesara did not form similar discrete groupings and exhibited either considerable morphological variability or were incorrectly identified. Maximum likelihood phylogenetic trees derived from both 18S rDNA and ITS-1 sequences discriminated six Xiphidorus species (X. balcarceanus, X. minor, X. parthenus, X. yepesara, and two undescribed Xiphidorus species) from Brazil. Also, restriction analysis of PCR products derived from the ITS-1 region using three restriction enzymes (Taq I, Rsa I and Hin f I) yielded repeatable patterns that clearly discriminated these six Xiphidorus species. Sequence divergence was noted between X. parthenus and X. yepesara. Our morphometric and molecular data suggests that X. parthenus and X. yepesara are distinct species contrary to their previous subspecific status.


Scientia Agricola | 1996

REAÇÃO DA PINHA (Annona squamosa L.) A TRÊS ESPÉCIES DE FITONEMATÓIDES

Ailton R. Monteiro; C.M.G. de Oliveira; A. Kuroki

The host reaction of custard apple (Annona squamosa) to three species of nematodes was studied. The plants were inoculated with 10,000 specimens per plant of Radopholus similis, Rotylenchulus reniformis or Meloidogyne exigua. Nematode population and plant growth parameters were evaluated three months later. The results showed that custard apple was resistent to Rotylenchulus reniformis and Meloidogyne exigua but intolerant to Radopholus similis.


Nematology | 2009

Additional data on Aorolaimus banoae (Rashid, Geraert & Sharma, 1987) from the Brazilian Atlantic forest

Rosangela A. Silva; Rosana Bessi; Ailton R. Monteiro; Mário M. Inomoto

A population of the little-known species Aorolaimus banoae was collected in the municipality of Cananeia, Sao Paulo state, Brazil, in a remnant of the once far more extensive Brazilian Atlantic Forest. As the original description of this species was based on only three females and nine males, additional morphometric and morphological data, including SEM studies, are presented. It is suggested that A. banoae is a member of the original fauna associated with the coastal Atlantic forest.


Ciencia Rural | 2001

Alcachofra: nova planta hospedeira de Pratylenchus penetrans no estado de São Paulo, Brasil

Carlos Eduardo Rossi; Ailton R. Monteiro

It is reported the occurrence of lesion nematode, Pratylenchus penetrans on artichoke in the State of Sao Paulo, Brazil. The population density estimated was 224 specimens in the soil (250cm3) and 720 in the roots (10g). Attacked plants showed growth reduction.


Tropical Plant Pathology | 2011

Morphological and molecular diagnostics for plant-parasitic nematodes: working together to get the identification done

Claudio Marcelo Gonçalves de Oliveira; Ailton R. Monteiro; Vivian C. Blok


Nematologia brasileira | 2004

Ocorrência de nematÓides do gênero Pratylenchus em cafezais do estado de sào paulo

Roberto K. Kubo; Claudio M. G. Oliveira; Sonia R. Antedomênico; Ailton R. Monteiro; Luiz Carlos C. B. Ferraz; Mário M. Inomoto


Nematropica | 1999

Efeito de Densidades Populacionais de Pratylenchus brachyurus No Crescimento de Plantulas de Coffea arabica cv. Mundo Novo e C. canephora cv. Apoata

Claudio M. G. Oliveira; Mário M. Inomoto; A. M. C. Vieira; Ailton R. Monteiro


Nematropica | 1999

Research Notes: Host Reaction of Coffea spp. to Pratylenchus brachyurus

Claudio M. G. Oliveira; Ailton R. Monteiro; Sonia R. Antedomenico; Mário M. Inomoto


Nematologia Brasileira | 1988

First record and preliminary information on the host range of Meloidogyne graminicola in Brazil.

Ailton R. Monteiro; L. C. C. Barbosa Ferraz

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Claudio M. G. Oliveira

Scottish Crop Research Institute

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A. Kuroki

National Council for Scientific and Technological Development

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