First Report of Columbia Root Knot Nematode (Meloidogyne chitwoodi) in Potato in Texas

Columbia root-knot nematode, Meloidogyne chitwoodi Golden et al. (1) was identified from potatoes, Solanum tuberosum L., collected from Dallam County, Texas in October 2000. Seed potatoes are the most likely source for this introduction. This nematode is currently found infecting potatoes grown in California, Colorado, Idaho, New Mexico, Nevada, Oregon, Utah, and Washington. Some countries prohibit import of both seed and table stock potatoes originating in states known to harbor M. chitwoodi. Lesions on the potatoes had discrete brown coloration with white central spots in the outer 1 cm of the tuber flesh. Female nematode densities averaged 3 per square centimeter of a potato section beneath the lesions. Nematodes were morphologically identified as M. chitwoodi based on the perineal pattern of mature females and the tail shape of juveniles per Golden et al. (1). Using polymerase chain reaction-RFLP of the rDNA ITS1 region and the mtDNA COII-16S rRNA region (2), individual juveniles were identified as M. chitwoodi based on their restriction fragment patterns. This is the first report of Columbia root-knot nematode infecting potatoes in Texas. The distribution of this nematode in potato fields throughout central United States should be determined. References: (1) A. N. Golden et al. J. Nematol. 12:319, 1980. (2) T. O. Powers and T. S. Harris. J. Nematol. 25:1, 1993.

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First Report of Columbia Root-Knot Nematode (Meloidogyne chitwoodi) in Potato in New Mexico

Plant Disease ◽

10.1094/pdis.2001.85.8.924c ◽

2001 ◽

Vol 85 (8) ◽

pp. 924-924

Author(s):

S. H. Thomas ◽

S. A. Sanderson ◽

Z. A. Handoo

Keyword(s):

New Mexico ◽

Solanum Tuberosum L ◽

The United States ◽

Soil Samples ◽

San Juan ◽

Root Knot Nematode ◽

Morphological Examination ◽

Meloidogyne Chitwoodi ◽

First Report ◽

San Juan County

Following a report of Columbia root-knot nematode in potatoes (Solanum tuberosum L.) imported by Mexico from the United States in spring 2000, six fields in San Juan County, NM, were surveyed in August 2000. Soil samples from two fields in which the exported potatoes had been produced contained second-stage juveniles that were tentatively identified as Columbia root-knot nematode. During the 2000 potato harvest, state inspectors detected tubers from four additional fields that exhibited symptoms of Columbia root-knot nematode, including warty exteriors and discrete small brown lesions that were apparent to a depth of 1 cm below the tuber surface. Meloidogyne chitwoodi Golden et al. (1) was confirmed from a subsample of tubers sent to the USDA Nematology Laboratory in Beltsville, MD, in October 2000. Identification was based on morphological examination of the nematodes recovered from tubers. To our knowledge, this is the first report of M. chitwoodi from New Mexico. No Columbia root-knot nematodes were recovered from soil samples collected at 26 locations throughout San Juan County in 1988 and 1989, nor had symptomatic tubers or plants been observed in this area previously. Columbia root-knot nematode most likely represents a recent introduction into northwestern New Mexico. Additional information regarding distribution of this nematode within the region is needed. References: (1) A. M. Golden et al. J. Nematol. 12:319–327, 1980.

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First Report of Columbia Root-Knot Nematode (Meloidogyne chitwoodi) in Potato in Turkey

Plant Disease ◽

10.1094/pdis-93-3-0316c ◽

2009 ◽

Vol 93 (3) ◽

pp. 316-316 ◽

Cited By ~ 8

Author(s):

A. Ozarslandan ◽

Z. Devran ◽

N. Mutlu ◽

I. H. Elekcioglu

Keyword(s):

Restriction Fragment ◽

Solanum Tuberosum L ◽

Intergenic Spacer ◽

The United States ◽

Root Knot Nematode ◽

Meloidogyne Chitwoodi ◽

First Report ◽

Intergenic Spacer Region ◽

Damage Probability ◽

United States Mexico

Columbia root-knot nematode, Meloidogyne chitwoodi Golden et al., was identified from potatoes, Solanum tuberosum L., collected from Nigde Province, Turkey in September 2006. Seed potatoes are the most likely source for this introduction. The nematode is currently found to be infecting potatoes grown in the Netherlands, Portugal, Belgium, Germany, the United States, Mexico, South Africa, and Argentina. M. chitwoodi acquired a quarantine status in Europe (1) because of its potential to become established worldwide and its high damage probability. Some countries prohibit import of both seed and table stock potatoes originating in states known to harbor M. chitwoodi. Lesions on the potatoes had discrete brown coloration with white central spots in the outer 1 cm of the tuber flesh. Female nematode densities averaged 3 to 5 per cm2 of a potato section beneath the lesions. Nematodes were morphologically identified as M. chitwoodi based on the perineal pattern of mature females and the tail shape of juveniles. Using PCR-restriction fragment length polymorphism of the 18S region (3) and the mtDNA COII-16S rRNA region (2) and intergenic spacer region between the 5S and 18S genes (4), individual juveniles were identified as M. chitwoodi based on their restriction fragment patterns. To our knowledge, this is the first report of Columbia root-knot nematode infecting potatoes in Turkey. The distribution of this nematode in potato fields throughout Turkey should be determined. References: (1) L. J. M. F. Den Nijs et al. Nematology 6:303, 2004. (2) T. O. Powers and T. S. Harris. J. Nematol. 25:1, 1993. (3) T. O. Powers et al. J. Nematol. 37:226, 2005. (4) J. Wishart et al. Phytopathology 92:884, 2002.

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First report of Trypanosoma cruziinfection in naturally infected dogs from southern Bahia, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612013005000003 ◽

2013 ◽

Vol 22 (1) ◽

pp. 182-185 ◽

Cited By ~ 5

Author(s):

Nilo Fernandes Leça Júnior ◽

Valter dos Anjos Almeida ◽

Fábio Santos Carvalho ◽

George Rego Albuquerque ◽

Fabiana Lessa Silva

Keyword(s):

Endemic Area ◽

Natural Infection ◽

Clinical Signs ◽

Domestic Dogs ◽

Chain Reaction ◽

First Report ◽

Molecular Tests ◽

Southern Bahia ◽

Polymerase Chain ◽

Cruzi Infection

In order to verify the Trypanosoma cruzi infection in domestic domiciled dogs in a rural endemic area from the south region of the State of Bahia, Polymerase Chain Reaction (PCR) were performed using S35 and S36 primers in 272 dogs living in the district of Vila Operaria, in the municipality of Buerarema. All animals were clinically evaluated; 2.5 mL of blood were collected through venipuncture for the performance of molecular tests. None of these animals showed clinical signs of the illness and only two were identified with the DNA parasite. This result is the first report of natural infection by T. cruzi in domestic dogs in southern Bahia.

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First Report of Meloidogyne partityla on Pecan in New Mexico

Plant Disease ◽

10.1094/pdis.2001.85.9.1030b ◽

2001 ◽

Vol 85 (9) ◽

pp. 1030-1030 ◽

Cited By ~ 6

Author(s):

S. H. Thomas ◽

J. M. Fuchs ◽

Z. A. Handoo

Keyword(s):

New Mexico ◽

The United States ◽

Root Knot Nematode ◽

Carya Illinoensis ◽

Morphological Examination ◽

Egg Masses ◽

First Report ◽

Additional Information ◽

Dona Ana County ◽

Normal Fertilization

For several years, decline was observed in mature pecan (Carya illinoensis (F.A. Wangenheim) K. Koch) trees in an orchard in Dona Ana County, New Mexico despite normal fertilization and irrigation practices. Affected trees were growing in sandy soil in two widely separated irrigation terraces and exhibited chlorosis of foliage and substantial die-back of branches in the upper canopy. Examination of feeder roots revealed the presence of numerous small galls and egg masses, with root-knot nematode females often visibly protruding from root tissue. Attempts to culture the nematode on tomato (Lycopersicon esculentum Mill. ‘Rutgers’) were unsuccessful. Females and egg masses were collected from fresh pecan roots and sent to the USDA Nematology Laboratory in Beltsville, MD, in October 2000, where specimens were identified as Meloidogyne partityla Kleynhans (1) based on morphological examination. This is the first report of M. partityla from New Mexico, and the second report of this nematode outside South Africa. Starr et al. (2) first reported M. partityla from pecan in the United States in 1996, after recovering the nematode from five orchards in Texas. In their study, the host range of M. partityla was limited to members of the Juglandaceae, which may explain the inability of the New Mexico population to reproduce on tomato. Additional information is needed regarding distribution of this nematode within pecan-growing regions throughout North America. References: (1) K. P. N. Kleynhans. Phytophylactica 18:103, 1986. (2) J. L. Starr et al. J. Nematol. 28:565, 1996.

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Updating the Quarantine Status of Prunus Infecting Viruses in Australia

Viruses ◽

10.3390/v12020246 ◽

2020 ◽

Vol 12 (2) ◽

pp. 246 ◽

Cited By ~ 1

Author(s):

Wycliff M. Kinoti ◽

Narelle Nancarrow ◽

Alison Dann ◽

Brendan C. Rodoni ◽

Fiona E. Constable

Keyword(s):

Polymerase Chain Reaction ◽

High Throughput Sequencing ◽

Mottle Virus ◽

Rt Pcr ◽

Chain Reaction ◽

Virus Family ◽

First Report ◽

Hop Stunt Viroid ◽

Polymerase Chain ◽

Stem Pitting

One hundred Prunus trees, including almond (P. dulcis), apricot (P. armeniaca), nectarine (P. persica var. nucipersica), peach (P. persica), plum (P. domestica), purple leaf plum (P. cerasifera) and sweet cherry (P. avium), were selected from growing regions Australia-wide and tested for the presence of 34 viruses and three viroids using species-specific reverse transcription-polymerase chain reaction (RT-PCR) or polymerase chain reaction (PCR) tests. In addition, the samples were tested using some virus family or genus-based RT-PCR tests. The following viruses were detected: Apple chlorotic leaf spot virus (ACLSV) (13/100), Apple mosaic virus (ApMV) (1/100), Cherry green ring mottle virus (CGRMV) (4/100), Cherry necrotic rusty mottle virus (CNRMV) (2/100), Cherry virus A (CVA) (14/100), Little cherry virus 2 (LChV2) (3/100), Plum bark necrosis stem pitting associated virus (PBNSPaV) (4/100), Prune dwarf virus (PDV) (3/100), Prunus necrotic ringspot virus (PNRSV) (52/100), Hop stunt viroid (HSVd) (9/100) and Peach latent mosaic viroid (PLMVd) (6/100). The results showed that PNRSV is widespread in Prunus trees in Australia. Metagenomic high-throughput sequencing (HTS) and bioinformatics analysis were used to characterise the genomes of some viruses that were detected by RT-PCR tests and Apricot latent virus (ApLV), Apricot vein clearing associated virus (AVCaV), Asian Prunus Virus 2 (APV2) and Nectarine stem pitting-associated virus (NSPaV) were also detected. This is the first report of ApLV, APV2, CGRMV, CNRNV, LChV1, LChV2, NSPaV and PBNSPaV occurring in Australia. It is also the first report of ASGV infecting Prunus species in Australia, although it is known to infect other plant species including pome fruit and citrus.

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First Report of Rupestris stem pitting associated virus in Argentina

Plant Disease ◽

10.1094/pdis.2002.86.8.921b ◽

2002 ◽

Vol 86 (8) ◽

pp. 921-921 ◽

Cited By ~ 2

Author(s):

C. G. Tarnowski ◽

P. A. Worlock ◽

S. Ulanovsky ◽

S. Gómez Talquenca

Keyword(s):

Polymerase Chain Reaction ◽

Reverse Transcription ◽

Polymerase Chain Reaction Method ◽

Vitis Vinifera L ◽

Chain Reaction ◽

First Report ◽

Cornell University ◽

Polymerase Chain ◽

Rupestris Stem Pitting ◽

Stem Pitting

Rupestris stem pitting associated virus (RSPaV), a component of the rugose wood complex (RWC), is a worldwide graft transmissible disease of grapevines (Vitis vinifera L.). RSPaV has a single-stranded 8,726-nt RNA genome, belongs to the genus Foveavirus, and is often associated with Rupestris stem pitting (RSP) disease (2). In 1995, a grapevine sanitary selection program was implemented in Mendoza to investigate this and other grapevine viral diseases. RSP can be diagnosed when V. rupestris cv. St. George is used as a woody indicator for biological indexing. Chip-bud inoculated St. George plants developed a row of small pits and grooves on the wood cylinder below the graft or around and below the inoculated point (1,2). After three seasons in the field, 15 accessions with RSP wood markings were observed. Mature leaves and bark shavings were extracted, partially purified, and analyzed by a onestep reverse transcription polymerase chain reaction method. The expected 339-bp band was found in only six of the positively indexed samples using the specific 13/14 primer pair (2). Other viruses associated with RWC have been detected in Argentina, but to our knowledge, this is the first report of RSPaV. References: (1) A. C. Goheen. Page 53 in: Compendium of Grape Diseases, R. C. Pearson and A. C. Goheen, eds. American Phytopatological Society, St. Paul, MN, 1988. (2) B. Meng. Rupestris stem pitting: Insights on etiology and development of reverse transcription-polymerase chain reaction and immunoassays for diagnosis. Ph.D. Diss. Cornell University, Ithaca, NY, 1999.

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Laporan Pertama di Sulawesi Selatan: Karakter Morfologi dan Molekuler Nematoda Puru Akar yang Berasosiasi dengan Akar Padi di Kabupaten Wajo, Sulawesi Selatan

Jurnal Perlindungan Tanaman Indonesia ◽

10.22146/jpti.33108 ◽

2018 ◽

Vol 22 (1) ◽

pp. 58

Author(s):

Hishar Mirsam ◽

Fitrianingrum Kurniawati

Keyword(s):

Polymerase Chain Reaction ◽

Nematode Species ◽

Morphological Characters ◽

Rice Root ◽

Nucleotide Sequence Analysis ◽

Morphological Identification ◽

Root Knot Nematode ◽

Chain Reaction ◽

Meloidogyne Graminicola ◽

Polymerase Chain

Root Knot Nematode (RKN) is one of the most important cosmopolite parasitic nematode species. Reports on RKN associated with rice root in Indonesia are still limited in West Java and Yogyakarta. This study aimed to identify the RKN associated with rice root in Sub-district of Bola, District of Wajo, South Sulawesi, based on morphological and molecular characters. Sampling was carried out by purposive method based on specific criteria of sample, i.e. root knot. Identification of root knot nematode (RKN) infestation in field was done by observing the primary and secondary symptoms. Morphological identification was carried out based on characters of juvenile 2 and the female perineal pattern. Molecular identification was based on amplification of r-DNA by polymerase chain reaction technique using primers rDNA2 and rDNA 1.58s. RKN were detected associated with the incidence of root knot in rice plant. RKN was identified as Meloidogyne graminicola based on morphological characters of juvenile 2 and the female perineal pattern. PCR using primer rDNA 2 / rDNA 1.58s successfully amplified a DNA band of RKN of ± 500 bp. Nucleotide sequence analysis showed that RKN isolated from Wajo was closely related to M. graminicola isolated from Nepal, China, India, Madagascar, and USA with homology of 98.1–100.00%. IntisariNematoda puru akar (NPA) merupakan salah satu jenis nematoda parasit penting yang bersifat kosmopolit. Laporan NPA yang berasosiasi dengan akar tanaman padi di Indonesia masih terbatas di Jawa Barat dan Yogyakarta. Penelitian ini bertujuan mengidentifikasi NPA yang berasosiasi dengan akar tanaman padi di Kabupaten Wajo, Sulawesi Selatan berdasarkan karakter morfologi dan molekuler. Pengambilan sampel dilakukan secara purposif dengan memilih sampel berdasarkan pada kriteria gejala spesifik penyakit puru akar. Identifikasi serangan dilakukan dengan mengamati gejala primer dan gejala sekunder. Identifikasi morfologi dilakukan dengan pengamatan karakter morfologi juvenil 2 dan pola perineal NPA betina.Identifikasi molekuler dilakukan dengan teknik polymerase chain reaction (PCR) untuk mengamplifikasi wilayah internal transcribed spacer (ITS) ribosomal DNA (rDNA) menggunakan pasangan primer rDNA2 dan rDNA1.58s. NPA ditemukan berasosiasi dengan akar tanaman padi yang memperlihatkan gejala puru akar. NPA diidentifikasi sebagai Meloidogyne graminicola berdasarkan karakter morfologi juvenil 2 dan pola perineal NPA betina. PCR menggunakan primer rDNA2/ rDNA1.58s berhasil mengamplifikasi pita DNA NPA dengan ukuran sekitar 500 bp. Analisis runutan nukleotida menunjukkan isolat NPA asal Wajo-Indonesia memiliki tingkat kekerabatan yang sangat dekat dengan isolat M. graminicola asal Nepal, Cina, India, Madagaskar, dan Amerika Serikat dengan nilai homologi berkisar 98,1–100,0%.

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Detection of Pseudomonas syringae pv actinidiae in kiwifruit pollen samples

New Zealand Plant Protection ◽

10.30843/nzpp.2011.64.5949 ◽

2011 ◽

Vol 64 ◽

pp. 246-251 ◽

Cited By ~ 12

Author(s):

J.L. Vanneste ◽

D. Giovanardi ◽

J. Yu ◽

D.A. Cornish ◽

C. Kay ◽

...

Keyword(s):

Polymerase Chain Reaction ◽

New Zealand ◽

Pseudomonas Syringae ◽

Bacterial Canker ◽

Bacterial Isolation ◽

Chain Reaction ◽

Male And Female ◽

First Report ◽

Vacuum Device ◽

Polymerase Chain

Presence of Pseudomonas syringae pv actinidiae (Psa) the causal agent of bacterial canker of kiwifruit in pollen samples collected from infected and non infected orchards in Italy and in New Zealand was determined by polymerase chain reaction (PCR) and by direct bacterial isolation Psa was isolated only from pollen samples collected in Italy including pollen collected from two uninfected orchards which the following year showed signs of infection Psa was also detected in pollen collected from male and female vines in an Italian infected orchard Pollen samples from Italy but not from New Zealand were collected with a vacuum device Psa could not be isolated from any of the 25 New Zealand pollen samples analysed This is the first report of Psa being associated with pollen There is currently no evidence that artificial pollination leads to increased infection or that pollen has been responsible for the introduction of Psa in a previously Psafree area

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Detection of root knot nematode Meloidogyne incognita by PCR

Plant Protection Science ◽

10.17221/10491-pps ◽

2017 ◽

Vol 38 (SI 2 - 6th Conf EFPP 2002) ◽

pp. 351-353

Author(s):

B. Tesařová ◽

M. Zouhar ◽

J. Lucinio ◽

P. Ryšánek

Keyword(s):

Polymerase Chain Reaction ◽

Meloidogyne Incognita ◽

Root Knot Nematode ◽

Chain Reaction ◽

Polymerase Chain

It is indispensable to have accurate and speedy method of nematodes detection considering their great deal of malignancy nematodes. For identification of Meloidogyne incognita genetic primers were designed and the procedure was attested by Polymerase Chain Reaction.

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