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Journal of Nematology

Society of Nematologists

Subject: Life Sciences

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ISSN: 0022-300X
eISSN: 2640-396X

DESCRIPTION

FEATURED ARTICLES

Enhanced entomopathogenic nematode yield and fitness via addition of pulverized insect powder to solid media
Nematotoxic coumarins from Angelica pubescens Maxim. f. biserrata Shan et Yuan roots and their physiological effects on Bursaphelenchus xylophilus
Broad-based root-knot nematode resistance identified in cowpea gene-pool two
Description of Pseudacrobeles (Pseudacrobeles) curvatus sp. n. (Cephalobidae: Rhabditida) in South Korea

VOLUME 49 , ISSUE 1 (March 2017) - List of articles

First Report of the Spiral Nematode Helicotylenchus microlobus Infecting Soybean in North Dakota

GUIPING YAN/ ADDISON PLAISANCE/ DANQIONG HUANG/ ZAFAR A. HANDOO

Spiral nematodes (Helicotylenchus spp.) are common plant-parasitic nematodes in fields of many crops. In June 2015, two soil samples were collected from a soybean field in Richland County, ND. Nematodes were extracted from soil using the sugar centrifugal flotation method ( Jenkins, 1964). Plant-parasitic nematodes were identified to genus based on morphological features and counted. Both samples contained spiral nematodes from 1,500 to 3,300 per kilogram of soil. In June and August 2016, 10 soi(..)

DOI: 10.21307/jofnem-2017-039

Characterization of Lilium longiflorum cv. ‘Nellie White’ Infection with Root-lesion Nematode Pratylenchus penetrans by Bright-field and Transmission Electron Microscopy

PAULO VIEIRA/ JOSEPH MOWERY/ JAMES KILCREASE/ JONATHAN D. EISENBACK/ KATHRYN KAMO

Lilium longiflorum cv. Nellie White, commonly known as Easter lily, is an important floral crop with an annual wholesale value of over $26 million in the United States. The root-lesion nematode, Pratylenchus penetrans, is a major pest of lily due to the significant root damage it causes. In this study, we investigated the cytological aspects of this plant–nematode interaction using bright-field and transmission electron microscopy. We took advantage of an in vitro culture method to multiply lili(..)

DOI: 10.21307/jofnem-2017-040

Assessment of Globodera pallida RNA Extracted from Solanum Roots

N. CAROL CASAVANT/ JOSEPH C. KUHL/ FANGMING XIAO/ ALLAN B. CAPLAN/ LOUISE-MARIE DANDURAND

The introduction of high-throughput sequencing technologies has made transcriptome analyses of plant–pathogen interactions almost routine. Nevertheless, it is still challenging to obtain RNA from populations made up of two species. An RNA extraction method that worked well on free-living Caenorhabditis elegans failed when applied to isolated Globodera pallida J2 larva. Furthermore, alternative protocols that extracted RNA from free-living J2 larva produced less satisfactory results once the anim(..)

DOI: 10.21307/jofnem-2017-041

Description of Enchodorus yeatsi n. sp. (Dorylaimida, Nordiidae) from Southern Iran and Its Molecular Phylogenetic Study

MAJID PEDRAM

Enchodorus yeatsi n. sp., a new species of the rare genus Enchodorus is described and illustrated based on its morphological and molecular characters. It was recovered from southern Iran. Females of the new species are characterized by having 1,511.3- to 1,792.5-mm long slender body, angular lip region having prominent papillae, 12- to 13-mm long odontostyle, double guiding ring, simple rod-like odontophore, didelphic–amphidelphic reproductive system, and 102- to 160-mm long elongate-conoid tail(..)

DOI: 10.21307/jofnem-2017-042

A Simple Express Technique to Process Nematodes for Collection Slide Mounts

ALEXANDER Y. RYSS

The new simple technique of hot fixation and a method for processing a mass quantity of nematodes to prepare nematode collection slides for taxonomic and ecological purposes, combined with an abrupt reduction of the set of procedures caused by the ‘‘cocktail’’ principle (a stratification of layers with a gradient of glycerol concentrations), are described.

DOI: 10.21307/jofnem-2017-043

Oscheius microvilli n. sp. (Nematoda: Rhabditidae): A Facultatively Pathogenic Nematode from Chongming Island, China

GUIXIN ZHOU/ HUAN YANG/ FENG WANG/ HAORAN BAO/ GUOXIANG WANG/ XIANGLONG HOU/ JIAN LIN/ GABRIEL YEDID/ KEYUN ZHANG

A new species, Oscheius microvilli n. sp., was found on Chongming Island (Shanghai, China). The new species is morphologically similar to the type strain of Oscheius myriophilus, but can be distinguished from it and other species of Oscheius on the basis of unique morphological characteristics of the bursa as well as male papillae. In this new species, the male bursal papillar formula is 2, 1, 3, 3 with everted tips in the first, fifth, and seventh pairs. The bursal rim is jagged, joins together(..)

DOI: 10.21307/jofnem-2017-044

Species Delimitation and Description of Mesocriconema nebraskense n. sp.(Nematoda: Criconematidae), a Morphologically Cryptic, Parthenogenetic Species from North American Grasslands

MAGDALENA OLSON/ TIMOTHY HARRIS/ REBECCA HIGGINS/ PETER MULLIN/ KIRSTEN POWERS/ SEAN OLSON/ THOMAS O. POWERS

Nematode surveys of North American grasslands conducted from 2010 to 2015 frequently recovered a species of criconematid nematode morphologically resembling Mesocriconema curvatum. These specimens were recovered from remnant native prairies in the central tallgrass ecoregion of North America, and not from surrounding agroecosystems. Historical records indicate that M. curvatum is a cosmopolitan species feeding on a wide range of agronomic and native plants. DNA barcoding indicates North American(..)

DOI: 10.21307/jofnem-2017-045

Description of Aphelenchoides macrospica n. sp. (Nematoda:Aphelenchoididae) from Northwestern Iran

BEHROUZ GOLHASAN/ RAMIN HEYDARI/ MEHRAB ESMAEILI/ ESMAEIL MIRAEIZ

Aphelenchoides macrospica n. sp. is described and illustrated from theWest Azerbayjan province, northwestern Iran. The new species is characterized by its body length of 807 to 963 mm (males) and 792 to 1,094 mm (females), offset cephalic region, lateral fields with four incisures, long stylet with 15 to 16 mm length, and excretory pore situated opposite or behind the nerve ring. Pharyngeal glands overlapping intestine dorsally and extending for 90 to 121 mm, tail terminus mucronate in both sexe(..)

DOI: 10.21307/jofnem-2017-046

Evaluation of Pochonia chlamydosporia and Purpureocillium lilacinum for Suppression of Meloidogyne enterolobii on Tomato and Banana

SILAS D. SILVA/ REGINA M. D. G. CARNEIRO/ MARCOS FARIA/ DANIELA A. SOUZA/ ROSE G. MONNERAT/ ROGERIO B. LOPES

Meloidogyne enterolobii is one of the most important root-knot nematode in tropical regions, due to its ability to overcome resistance mechanisms of a number of host plants. The lack of new and safe active ingredients against this nematode has restricted control alternatives for growers. Egg-parasitic fungi have been considered as potential candidates for the development of bionematicides. In tissue culture plates, Pochonia chlamydosporia (var. catenulata and chlamydosporia) and Purpureocillium (..)

DOI: 10.21307/jofnem-2017-047

Esteya vermicola Controls the Pinewood Nematode, Bursaphelenchus xylophilus, in Pine Seedlings

ZHEN WANG/ YONGAN ZHANG/ CHUNYAN WANG/ YUNBO WANG/ CHUNGKEUN SUNG

Esteya vermicola (Ophiostomataceae) is an endoparasitic fungus that has great potential as a biological control agent against the pinewood nematode Bursaphelenchus xylophilus which causes pine wilt disease.We tested E. vermicola for control of pine wilt disease by spraying E. vermicola conidia on artificial wounds on pine seedlings, and the optimum E. vermicola treatment density and application time were also investigated in the greenhouse. The wounds were similar to those made by sawyer beetles(..)

DOI: 10.21307/jofnem-2017-048

First Report and Comparative Study of Steinernema surkhetense (Rhabditida: Steinernematidae) and its Symbiont Bacteria from Subcontinental India

AASHIQ HUSSAIN BHAT/ I STKHAR/ ASHOK KUMAR CHAUBEY/ VLADIMIR PUZA/ ERNESTO SAN-BLAS

Two populations (CS19 and CS20) of entomopathogenic nematodes were isolated from the soils of vegetable fields from Bijnor district, India. Based on morphological, morphometrical, and molecular studies, the nematodes were identified as Steinernema surkhetense. This work represents the first report of this species in India. The infective juveniles (IJs) showed morphometrical and morphological differences, with the original description based on longer IJs size. The IJs of the Indian isolates posse(..)

DOI: 10.21307/jofnem-2017-049

Occurrence of Belonolaimus in Sinaloa, Northwestern Mexico: A New Report on Distribution and Host Range

MANUEL MUNDO-OCAMPO/ J. G. BALDWIN/ T. J. PEREIRA/ J. R. CAMACHO-BAEZ/ A. D. ARMENTA-BOJORQUEZ/ M. CAMACHO-HARO/ J. O. BECKER

The present study reports the occurrence of the genus Belonolaimus in the state of Sinaloa, Mexico, associated with native plants (i.e., Ziziphus amole and Stenocereus alamosensis) in a natural coastal ecosystem. Both morphological and molecular approaches were employed to characterize the Sinaloa population. Notwithstanding of some morphological and morphometric variation between Belonolaimus from Sinaloa and other valid species, the characterization indicates that this population might belong (..)

DOI: 10.21307/jofnem-2017-050

Effects of Cover Crops on Pratylenchus penetrans and the Nematode Community in Carrot Production

ZANE J. GRABAU/ ZIN THU ZAR MAUNG/ D. COREY NOYES/ DEAN G. BAAS/ BENJAMIN P. WERLING/ DANIEL C. BRAINARD/ HADDISH MELAKEBERHAN

Cover cropping is a common practice in U.S. Midwest carrot production for soil conservation, and may affect soil ecology and plant-parasitic nematodes—to which carrots are very susceptible. This study assessed the impact of cover crops—oats (Avena sativa), radish (Raphanus sativus) cv. Defender, rape (Brassica napus) cv. Dwarf Essex, and a mixture of oats and radish—on plantparasitic nematodes and soil ecology based on the nematode community in Michigan carrot production systems. Research was co(..)

DOI: 10.21307/jofnem-2017-051

Erratum

DOI: 10.21307/jofnem-2017-052

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