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PCR amplification of a long rDNA segment with one primer pair in agriculturally important nematodes

 und    | 03. Juni 2019

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Figure 1:

Position diagram of primers. (A): rDNA (AF248477), Meloidogyne artiellia; (B): rDNA (AY580056), Xiphinema americanum. (C): rDNA (X03680), Caenorhabditis elegans. Created with SnapGene software (GSL Biotech, Chicago, IL; available at snapgene.com) and assembled with Adobe Photoshop CC 2018 (Adobe Systems Incorporated, San Jose, CA).
Position diagram of primers. (A): rDNA (AF248477), Meloidogyne artiellia; (B): rDNA (AY580056), Xiphinema americanum. (C): rDNA (X03680), Caenorhabditis elegans. Created with SnapGene software (GSL Biotech, Chicago, IL; available at snapgene.com) and assembled with Adobe Photoshop CC 2018 (Adobe Systems Incorporated, San Jose, CA).

Figure 2:

PCR Amplification of 3.3 to 4.2 kb of rDNA from agriculturally important nematodes. M: DNA markers; 1: Heterodera orientalis 104F80; 2: Xiphinema sp. 104F83; 3: Hoplolaimus sp. 104G35; 4: Helicotylenchus sp. 104G36; 5: Meloidogyne incognita Me47; 6: Pratylenchus scribneri Pr1 and 7: Negative control.
PCR Amplification of 3.3 to 4.2 kb of rDNA from agriculturally important nematodes. M: DNA markers; 1: Heterodera orientalis 104F80; 2: Xiphinema sp. 104F83; 3: Hoplolaimus sp. 104G35; 4: Helicotylenchus sp. 104G36; 5: Meloidogyne incognita Me47; 6: Pratylenchus scribneri Pr1 and 7: Negative control.

Ribosomal primers used for PCR and sequencing.

Primers Direction Loci Sequence (5′-3′) PCR Sequencing References
18S-CL-F3 F 18S CTTGTCTCAAAGATTAAGCCATGCAT Carta and Li (2018)
D3B R 28S TCGGAAGGAACCAGCTACTA Nunn (1992)
28S-CL-R R 28S CAGCTACTAGATGGTTCGATTAGTC This study
18S-530F (530F) F 18S AAGTGTGGTGCCAGCAGCCGC Reverse complement of 530R
18S-530R (530R) R 18S GCGGCTGCTGGCACCACACTT Thomas et al. (2011)
1912R R 18S TTTACGGTCAGAACTAGGG Holterman et al. (2006)
18S-CL-R2 R 18S GTTGAGTCAAATTAAGCCGCA Carta and Li (2018)
18S-CL-F7 F 18S TGCGGCTTAATTTGACTCAAC This study
18S-CL-F2 F 18S CTGTGATGCCCTTAGATGTCC Carta and Li (2018)
18S-CL-R5 R 18S GCGGTGTGTACAAAGGGCAGGGAC Carta and Li (2018)
18S-CL-R6 R 18S ACCTTGTTACGACTTTTACTTCCTCTA This study
18S-CL-R7 R 18S ACCTTGTTACGACTTTTGCCCGGTTCA This study
18S-CL-F8 F 18S TGAACCGGGCAAAAGTCGTAACAAGGT This study
ITS-CL-F2 F ITS ATTACGTCCCTGCCCTTTGTA Carta and Li (2018)
5.8S-CL-F1 F 5.8S GATTCCATCATTCTAAGC This study
5.8S-CL-R1 R 5.8S ACCGCTTAGAATGATGGAATC This study
rDNA15.8S F 5.8S ACGAGCCGAGTGATCCACCG Cherry et al. (1997)
5.8SF F 5.8S CGGTGGATCACTCGGCTCGT Reverse complement of rDNA1.58S
AB28 R 28S ATATGCTTAAGTTCAGCGGGT Joyce et al. (1994)
28S-CL-F1 F 28S CTGAACTTAAGCATATCAGTAAGC This study
VRAIN 2R (V2R) R 28S TTTCACTCGCCGTTACTAAGGGAATC Vrain et al. (1992)
D2AR R 28S ACTTTCCCTCACGGTACTTGT Reverse complement of D2A
D2A F 28S ACAAGTACCGTGAGGGAAAGT Nunn (1992)
28S-CL-R3 R 28S GCAACTTTCCCTCACGGTACTTG This study
28S-CL-F3 F 28S AAGAGAGAGTTAAAGAGGACGTGAA This study
28S-CL-R1 R 28S ACTCCTTGGTCCGTGTTTCAAG This study
28S-CL-F2 F 28S CGACCCGTCTTGAAACAC This study
28S-1006rev (1006R) R 28S GTTCGATTAGTCTTTCGCCCCT Holterman et al. (2008)

Agriculturally important nematodes tested in this study.

Taxa Origin and locality PCR primer pair Ta (°C) Sequencing primers
Aphelenchoides fragariae Live specimen 104J12, provided by Dr. Paula Agudelo, Clemson University, Clemson, South Carolina 18S-CL-F3 and 28S-CL-R 50 530F, 530R, 1912R, 18S-CL-F2, 18S-CL-R2, 18S-CL-R5, ITS-CL-F2,28S-CL-F1, D2AR, 28S-CL-F3, 28S-CL-R1 and 28S-CL-R
Bursaphelenchus sp. Live specimen 104J7, isolated from walnut twig beetles, Washington 18S-CL-F3 and 28S-CL-R 57 530F, -530R, 18S-CL-R2, 18S-CL-F7,18S-CL-F2, 18S-CL-R5, 18S-CL-R7, 18S-CL-F8, ITS-CL-F2, rDNA15.8S, 28S-CL-F1, D2AR, 28S-CL-F3, 28S-CL-R1, 28S-CL-F2 and 1006R
Bursaphelenchus xylophilus Live specimen 104H46, isolated from Eastern white pine tree, New Hampshire 18S-CL-F3 and 28S-CL-R 57 530F, -530R, 18S-CL-R2, 18S-CL-F7,18S-CL-F2, 18S-CL-R5, 18S-CL-R7, 18S-CL-F8, ITS-CL-F2, rDNA15.8S, 28S-CL-F1, D2A, D2AR, 28S-CL-F3, 28S-CL-R1, 28S-CL-F2 and 1006R
Crossonema sp. Live specimen 104G38, isolated from the rhizosphere of bamboo, Beltsville, Maryland 18S-CL-F3 and D3B 57 530F, 530R, 1912R, 18S-CL-F2, 18S-CL-R2, 18S-CL-R5, ITS-CL-F2,28S-CL-F1, D2AR, 28S-CL-F3, 28S-CL-R1 and 28S-CL-R
Ditylenchus dipsaci Live specimen 85A5, obtained from French Iris in Wisconsin by USDA-APHIS-PPQ interception 18S-CL-F3 and 28S-CL-R 50 530R, 1912R,18S-CL-R2, 18S-CL-F7,18S-CL-F2, 18S-CL-R5, 18S-CL-R7, 18S-CL-F8, ITS-CL-F2, rDNA15.8S, AR28, V2R, 28S-CL-F1, 28S-CL-F3, D2AR, 28S-CL-R1, and 28S-CL-F2
Ditylenchus sp. Live specimen 85C1, isolated from the rhizosphere of alfalfa, Moab, Utah 18S-CL-F3 and 28S-CL-R 50 530R, 1912R,18S-CL-R2, 18S-CL-F7,18S-CL-F2, 18S-CL-R5, 18S-CL-R7, 18S-CL-F8, ITS-CL-F2, rDNA15.8S, 5.8SF, AB28, V2R, 28S-CL-F1, 28S-CL-F3, 28S-CL-R3, 28S-CL-R1, 28S-CL-F2, 1006R
Ecumenicus sp. Live specimen 85G11, isolated from the rhizosphere of alfalfa, St. George, Utah 18S-CL-F3 and D3B 50 530R, 530F,18S-CL-R2, 18S-CL-F7,18S-CL-F2, 18S-CL-R5, 18S-CL-R6, ITS-CL-F2, rDNA15.8S, 5.8SF, V2R, 28S-CL-F1, D2AR, D2A, 28S-CL-R3, 28S-CL-R1, 28S-CL-F2, 1006R
Helicotylenchus sp. Live specimen 104G36, isolated from the rhizosphere of bamboo, Beltsville, Maryland 18S-CL-F3 and D3B 57 530R, 530F,1912R, 18S-CL-R2, 18S-CL-F7,18S-CL-F2, 18S-CL-R5, 18S-CL-F8, ITS-CL-F2, 5.8SF, V2R, 28S-CL-F1, D2AR, 28S-CL-R1, 28S-CL-F2, 28S-CL-R
Heterodera glycines Live J2 specimen Hg20, from the isolate, NL1-RHp originally was collected in on the east shore of Maryland and raised on soybean (G. max, cv. Kent) in sand-filled beakers 18S-CL-F3 and D3B 57 530R, 1912R, 18S-CL-R2, 18S-CL-F7,18S-CL-F2, 18S-CL-R7, 18S-Cl-F8, rDNA15.8S, 5.8SF, AB28, 28S-CL-F1, D2A, 28S-CL-F3, 28S-CL-R1, 28S-CL-F2, 1006R, and 28S-CL-R
Heterodera orientalis Live J2 specimen 104F80, isolated from the cyst in the rhizosphere of Miscanthus, Beltsville, Maryland. 18S-CL-F3 and D3B 57 530R, 530F, 1912R, 18S-CL-R2, ,18S-CL-F2, 18S-CL-R5, ITS-CL-F2, 28S-CL-F1, D2AR, 28S-CL-F3, 28S-CL-R1, 28S-CL-F2, 28S-CL-R
Hoplolaimus sp. Live specimen 104G35, isolated from the rhizosphere of bamboo, Beltsville, Maryland 18S-CL-F3 and D3B 57 530R, 530F, 1912R, 18S-CL-R2, 18S-CL-F2, 18S-CL-R5, 18S-CL-F8, ITS-CL-F2, rDNA15.8S, 5.8SF, AB28, V2R, 28S-CL-F1, D2A, 28S-CL-F3, 28S-CL-R3, 28S-CL-R1, and 28S-CL-F2
Litylenchus sp. Live specimen 104H88, isolated from the leaf of beech, Perry, Ohio 18S-CL-F3 and 28S-CL-R 50 530R, 530F, 1912R, 18S-CL-R2, 18S-CL-F2, 18S-CL-R5, 18S-CL-R7, ITS-CL-F2, rDNA15.8S, V2R, 28S-CL-F3, 28S-CL-R1, 28S-CL-F2, 1006R and 28S-CL-R
Meloidogyne incognita Live J2 specimen Me47 from the isolate, RKN Race 1, originally was collected in Maryland and maintained with ‘PA-136’ pepper in greenhouse pots 18S-CL-F3 and D3B 57 530R, 530F, 1912R, 18S-CL-R2, 18S-CL-F2, 18S-CL-F7, 18S-CL-R5, 18S-CL-R7, ITS-CL-F2, 5.8SF, V2R, 28S-CL-R1, 28S-CL-F2 and 1006R
Pratylenchus scribneri Live specimen Pr1 from a culture maintained with corn root explant; originally collected from soil in Beltsville, Maryland 18S-CL-F3 and D3B 57 18S-CL-F3, 530R, 530F, 1912R, 18S-CL-R2, 18S-CL-F2, 18S-CL-F7, 18S-CL-R5, 18S-CL-R7, ITS-CL-F2, rDNA15.8S, 5.8SF, Ab28, V2R, D2Ar, D2A, 28S-CL-F3, 28S-CL-R3, 28S-CL-R1, 28S-CL-F2 and 28S-CL-R
Radopholus similis Live specimen 31G1, obtained by USDA – APHIS – PPQ interception from Anthurium in Kurtistown, Hawaii 18S-CL-F3 and 28S-CL-R 50 530R, 530F,1912R, 18S-CL-R2, 18S-CL-F2, 18S-CL-F7, 18S-CL-R5, 18S-CL-R7, ITS-CL-F2, rDNA15.8S, 5.8SF, AB28, V2R, D2AR, 28S-CL-F1, 28S-CL-F3, 28S-CL-R1, 28S-CL-F2 and 1006R
Xiphinema sp. Live specimen 06D2, isolated from soil in Clarksville, Maryland 18S-CL-F3 and D3B 50 18S-CL-F3,530R, 530F,1912R, 18S-CL-R2, 18S-CL-F2, 18S-CL-F7, 18S-CL-R5, 18S-CL-R6, ITS-CL-F2, 5.8S-CL-F1, 5.8S-CL-R1(XitsS3), V2R, D2AR,D2A, 28S-CL-F3, 28S-CL-R1, 28S-CL-F2, and 1006R
Xiphinema sp. Live specimen 104F83, isolated from the rhizosphere of bamboo, Beltsville, Maryland 18S-CL-F3 and D3B 57 18S-CL-F3, 530R, 530F,1912R, 18S-CL-R2, 18S-CL-F2, 18S-CL-F7, 18S-CL-R5, 18S-CL-R6, ITS-CL-F2, 5.8SF, 5.8S-CL-R1(Xist3), V2R, D2AR, 28S-CL-F2, 1006R and 28S-CL-R
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