线虫鉴定通用引物
松材线虫病分子检测鉴定技术规程

松材线虫病分子检测鉴定技术规程松材线虫病是由松材线虫引起的一种严重的林木病害,对林业生产造成了严重的危害。
为了及时发现和控制松材线虫病,科研人员开发了分子检测鉴定技术,以提高病害的检测效率和准确性。
下面将介绍松材线虫病分子检测鉴定技术规程。
1. 样品采集和处理。
首先,需要采集受感染的树木或土壤样品作为检测的对象。
对于树木样品,可以选择受感染的树皮、树脂或树液作为检测样品;对于土壤样品,可以选择受感染树木周围的土壤作为检测样品。
采集的样品需要进行处理,如粉碎或提取DNA等操作,以便后续的分子检测。
2. DNA提取。
从样品中提取松材线虫的DNA是分子检测的关键步骤。
常用的DNA提取方法包括CTAB法、酚/氯仿提取法等。
提取的DNA需要经过纯化和浓缩处理,以保证后续的PCR反应的准确性和灵敏度。
3. PCR扩增。
PCR(聚合酶链式反应)是分子检测中常用的技术手段,可以扩增目标DNA序列,从而进行检测和鉴定。
设计特异性引物对松材线虫的DNA进行扩增,以获得特异性的PCR产物。
4. 凝胶电泳分析。
通过凝胶电泳分析PCR产物,可以判断样品中是否存在松材线虫的DNA。
在凝胶电泳中,目标DNA序列会呈现特异的条带,从而进行鉴定和分析。
5. 数据分析与结果判读。
最后,对凝胶电泳分析的结果进行数据分析和结果判读。
根据PCR产物的大小和特异性条带的出现,可以判断样品中是否存在松材线虫的DNA,从而进行病害的鉴定和诊断。
总之,松材线虫病分子检测鉴定技术规程是一项重要的技术手段,可以提高对松材线虫病的检测效率和准确性。
通过标准化的操作流程和技术规程,可以有效地应用于病害的监测和防控工作中,为林业生产提供有力的技术支持。
陕西省甘薯上马铃薯腐烂茎线虫的生物型鉴定及综合防控技术

陕西省甘薯上马铃薯腐烂茎线虫的生物型鉴定及综合防控技术刘晨李英梅杨艺炜陈志杰(陕西省生物农业研究所,陕西西安715299)摘要马铃薯腐烂茎线虫(Ditylenchus destructor)是危害甘薯的重要植物病原线虫,其发生有逐年加重的趋势。
通过形态学鉴定及分子生物学鉴定,确定危害陕西甘薯的马铃薯腐烂茎线虫生物型主要为A型,其1年发生8~10代,在27~28℃、20~24℃、6~10℃条件下,完成一个世代的时间分别为18d、20~26d和68d。
马铃薯腐烂茎线虫主要以卵、幼虫、成虫在薯块、土壤、粪肥中越冬,种薯和种苗是其主要传播途径。
本文提出了严格进行种薯检测、建立无病留种田和挑选健康种薯、温汤浸种、覆膜栽培、轮作倒茬、清洁田园、高剪苗、药剂防治等适宜陕西区域推广应用的综合防控技术,以期为减轻马铃薯腐烂茎线虫对甘薯的危害提供参考。
关键词马铃薯腐烂茎线虫;甘薯;生物型;发生规律;综合防控技术;陕西省中图分类号S433.89文献标识码A文章编号1007-5739(2023)09-0109-04DOI:10.3969/j.issn.1007-5739.2023.09.031开放科学(资源服务)标识码(OSID):Biological Type Identification and Integrated Control Technology of Ditylenchus destructoron Sweet Potato in Shaanxi ProvinceLIU Chen LI Yingmei YANG Yiwei CHEN Zhijie(Shaanxi Institute of Biological Agriculture,Xi'an Shaanxi715299)Abstract Ditylenchus destructor is an important plant pathogenic nematode to sweet potato,which has aggravated year by year.Through morphological identification and molecular biological identification,it was determined that Ditylen-chus destructor harming sweet potato in Shaanxi Province was mainly type A.It occurred8-10generations in a year. Under the condition of27-28℃,20-24℃and6-10℃,a generation was completed for18d,20-26d and68d, respectively.Ditylenchus destructor mainly overwintered in potato blocks,soil and manure as eggs,larvae and adults, and seed tuber and seedling were the main transmission routes.In this paper,the integrated prevention and control techniques suitable for popularization and application in Shaanxi region were put forward,such as strictly detecting of seed tubers,constructing disease-free field,selecting healthy seed tubers,soaking seeds in hot water,plastic film covering cultivation,crop rotating,cleaning the field,high seedling cutting,pesticide controlling,so as to provide a reference for decreasing the damage of sweet potato caused by Ditylenchus destructor.Keywords Ditylenchus destructor;sweet potato;biological type;regularity of outbreak;integrated control tech-nology;Shaanxi Province甘薯属旋花科番薯属,为蔓生性草本块茎植物,具有淀粉含量高、营养丰富、高产稳产、适应性强、抗逆性强、投入少且产出高的优点。
一种鉴定4种根结线虫的PCR方法

一种鉴定4种根结线虫的PCR方法景晓辉;吴伦英;汪军;黄俊生【摘要】A rapid and sensitive polymerase chain reaction (PCR) method for the detection and identification of four most common and economically important Meloidogyne spp. was developed. By using previously published primer #C2F3/#1108, fragments of three sizes were detected. The M. incognita and M. javanica reactions produced a 1.7 kb fragment; the M. arenaria reaction, a 1.1 kb fragment; and the M. hapla reaction resulted in a O.S kb fragment. Based on the sequence of oesophageal gland protein gene SEC-1, specific primer MI-F/MI-R was designed and tested for its amplification specificity and efficiency against populations of M. incognita. This resulted in two pairs of primers that were used in combination to reliably identify Meloidogyne incognita, M. arenaria, M. javanica and M. hapla.%根结线虫(Meloidogyne spp.)是威胁全球农业生产的重要病原物,每年给农业生产造成巨大的经济损失.利用两对引物#C2F3/#1108和MI-F/MI-R建立了一种适用于4种根结线虫分子鉴定的技术.结果表明:引物#C2F3/#1108可将根结线虫分为南方根结线虫或爪哇根结线虫、花生根结线虫和北方根结线虫;引物MI-F/MIR可用于特异性区分南方根结线虫和爪哇根结线虫.【期刊名称】《热带作物学报》【年(卷),期】2013(034)003【总页数】3页(P433-435)【关键词】聚合酶链式反应;食管腺蛋白基因;根结线虫;鉴定【作者】景晓辉;吴伦英;汪军;黄俊生【作者单位】中国热带农业科学院环境与植物保护研究所农业部热带作物有害生物综合治理重点实验室海南省热带农业有害生物监测与控制重点实验室海南省热带作物病虫害生物防治工程技术研究中心海南海口 571101【正文语种】中文【中图分类】S432根结线虫(Meloidogyne species)是一类危害非常严重的植物病原线虫,广泛分布于世界各地,危害超过3 000种植物[1]。
松材线虫检疫鉴定方法

松材线虫检疫鉴定方法
松材线虫(Bursaphelenchus xylophilus)是一种寄生性线虫,可能对松树造成严重危害。
为了及时检测和防治松材线虫的传播,
科学家们发展了一系列松材线虫检疫鉴定方法。
1. PCR技术(聚合酶链式反应):PCR技术是一种常用的
DNA分子生物学方法,用于检测松材线虫的存在。
该方法可通过
放置松树样品中提取的DNA与松材线虫的特定引物结合,从而扩
增目标DNA。
通过观察PCR反应结果,可以确定松树样品是否受到了松材线虫的感染。
2. 寄主植物检疫:松材线虫主要通过传染松树传播,因此寄主
植物检疫是一种常见的鉴定方法。
检疫人员通常会观察松树的枝干、树干和根系等部位是否存在松材线虫的病征,如褐变、水渗
出等。
同时,他们还会对松树样品进行松材线虫的提取、培养和
鉴定,以确认是否受到感染。
3. 间接检测方法:除了直接检测松树样品中的线虫外,科学家
们还开发了一些间接检测方法来鉴定松材线虫的存在。
例如,可
以利用诱捕树干中的甲醇作为挥发物质,吸引松材线虫进入陷阱。
研究人员还可以观察昆虫等受松材线虫影响的寄生生物,从而推
断松树样品中是否存在线虫。
这些松材线虫检疫鉴定方法的发展为我们及时发现和控制松材线虫的传播提供了有力的工具。
通过采用这些方法,我们能够更准确地识别和确认松树样品中是否存在松材线虫,并及时采取相应的防治措施,以避免松树病害的进一步传播。
用PCR-RFLP法在海鱼中检出简单异尖线虫幼虫

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利用PCR-RFLP技术鉴别异尖线虫

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五种短体线虫 DNA 条形码鉴定方法

五种短体线虫 DNA 条形码鉴定方法魏亚东;容万韬;赵立荣;王金成;黄国明;郭京泽;孙建华【摘要】以穿刺短体线虫、咖啡短体线虫、伤残短体线虫、斯克里布纳短体线虫和落选短体线虫5种短体线虫的18个种群为试验材料,将其测序获得的ITS序列与GenBank中已提交的短体线虫序列进行了Blast比对和系统发育分析,以验证核糖体ITS序列作为DNA条形码的可行性。
结果显示,核糖体ITS序列作为DNA条形码可以很好的用于鉴别以上5种短体线虫。
%The root lesion nematodes,Pratylenchus Flipjev,1936,are among the widespread and seriously de-structive plant endoparasites around the world .Due to the instability of morphological characteristics ,it was very dif-ficult to identify this kind of nematodes just by their morphology .In this study ,18 populations of the following 5 Pra-tylenchus species,i.e.Pratylenchus penetrans,P.coffeae,P.vulnus,P.scribneri and P.neglectus, were used as ex-periment materials ,and their ribosomal ITS sequences were obtained to conduct blast alignment and phylogenetic a -nalysis with other ribosomal ITS sequences of Pratylenchus species submitted in GenBank in order to verify the fea-sibility of ITS regions as DNA barcode .The results showed that DNA barcoding approach using ribosomal ITS re-gions as target fragment could be readily used for identification of the above-mentioned 5 Pratylenchus species .【期刊名称】《华北农学报》【年(卷),期】2013(000)006【总页数】4页(P136-139)【关键词】短体线虫;ITS;系统发育;DNA条形码【作者】魏亚东;容万韬;赵立荣;王金成;黄国明;郭京泽;孙建华【作者单位】天津出入境检验检疫局动植物与食品检测中心,天津 300461;天津出入境检验检疫局动植物与食品检测中心,天津 300461; 天津师范大学,天津300387;广东出入境检验检疫局,广东广州 510623;天津出入境检验检疫局动植物与食品检测中心,天津300461;天津出入境检验检疫局动植物与食品检测中心,天津 300461;天津出入境检验检疫局动植物与食品检测中心,天津 300461;天津师范大学,天津 300387【正文语种】中文【中图分类】S433.89短体属线虫(Pratylenchus Flipjev,1936)又称根腐线虫,是世界广泛分布且破坏性极大的迁移性植物内寄生线虫类群之一[1]。
一种鉴定4种根结线虫的PCR方法

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The primer pairs used were D2A (5’-acaagtaccgtgagggaaagttg-3’) and D2B(5’-aatccgtgtttcaagacggg-3’), D3A (5’-gacccgtcttgaaacacgga-3’) and D3B(5’-tcggaaggaaccagctacta- 3’) (Nunn, 1992), and mtA (5’-ggcggatcctacatcgatgttgtat-3’) and mtB (5’-ggcggatccwkttcctctcgtact-3’). These primers selectively amplify metazoan ribosomal DNAs (rDNA) and do not amplify common contaminants such as bacteria, fungi, or plant material. Courtright EM, Wall DH, Virginia RA, et al. Nuclear and mitochondrial DNA sequence diversity in the Antarctic nematode Scottnema lindsayae. Journal of Nematology, 2000, 32(2): 143.DNA extraction and polymerase chain reaction (PCR) assays were performed according to Subbotin et al. (2000). The ITS1-5.8S-ITS2 and the D2-D3 of 28S of rDNA were amplified using the following primer sets: 5367 (5’-ttgattacgtccctgcccttt-3’) and F195 (5’-tcctccgctaaatgatatg-3’); and D2A (5’-acaagtaccgtgagggaaagttg-3’) and D3B (5’-tcggaaggaaccagctacta-3’) as described by Schmitz et al. (1998) and De Ley et al. (1999), respectively.Castillo P, Vovlas N, Subbotin S, et al. A new root-knot nematode, Meloidogyne baetica n.sp.(Nematoda: Heteroderidae), parasitizing wild olive in Southern Spain. Phytopathology, 2003, 93(9): 1093-1102.D3A(5’-gacccgtcttgaaacacgga-3’) and D3B (5’-tcggaaggaaccagctacta-3’).Al-Banna L, Ploeg A T, Williamson V M, et al. Discrimination of six Pratylenchus species using PCR and species-specific primers. Journal of nematology, 2004, 36(2): 142.The nuclear ribosomal internal transcribed spacer (ITS1) segment was amplified with the primers rDNA2 5’-ttgattacgtccctgcccttt-3’ (Vrain et al. 1992) and rDNA1.58S5’-acgagccgagtgatccaccg-3’ (Cherry et al. 1997). The ribosomal LSU D2-D3 expansion segment was amplified with primersD2A 5’-acaagtaccgtgagggaaagttg-3’ and D3B5’-tcggaaggaaccagctacta-3’ (Courtright et al.,2000) as previously described (Al-Banna et al., 1997).Skantar AM, Carta LK. Multiple displacement amplification (MDA) of total genomic DNA from Meloidogyne spp. and comparison to crude DNA extracts in PCR of ITS1, 28S D2-D3 rDNA and Hsp90. Nematology, 2005, 7(2): 285-294.Several nematode specimens of each sample were transferred to an Eppendorf tube containing 16 ul ddH2O, 2 ul 10X PCR buffer and 2 ul proteinase K (600 ug/ml) (Promega, Benelux, The Netherlands) and crushed for 2 min with a Vibro Mixer microhomogeniser (Zürich, Switzerland). The tubes were incubated at 65ºC (1 h) and then at 95◦C (15 min). Detailed protocols for PCR, cloning and automated sequencing are described by Tanha Maafi et al. (2003). The forward D2A (5’-acaagtaccgtgagggaaagttg-3’) and reverse D3B (5’-tcggaaggaaccagctacta-3’) primers were used for amplification and sequencing of the fragment of the 28S rRNA gene.Subbotin SA, Vovlas N, Crozzoli R, et al. Phylogeny of Criconematina Siddiqi, 1980 (Nematoda: Tylenchida) based on morphology and D2-D3 expansion segments of the 28S-rRNA gene sequences with application of a secondary structure model. Nematology, 2005, 7(6): 927-944.The different regions of rDNA were amplified as described by Castillo et al.(2003) and Tigano et al. (2005) using the following primer sets:MelF (5’-tacggactgagataatggt-3’) and MelR(5’-ggttcaagccactgcga-3’) for the 18S, 5367 (5’-ttgattacgtccctgcccttt-3’) and F195(5’-tcctccgctaaatgatatg-3’) for the ITS1–5.8S-ITS2, D2A (5’- acaagtaccgtgagggaaagttg-3’) andD3B (5’-tcggaaggaaccagctacta-3’) for the D2-D3 region of 28S.Rius JEP, Vovlas N, Troccoli A, et al. A new root-knot nematode parasitizing sea rocket from Spanish Mediterranean coastal dunes: Meloidogyne dunensis n. sp. (Nematoda: Meloidogynidae). Journal of nematology, 2007, 39(2): 190.Cloning, characterisation and heterologous expression of an astacin metalloprotease, Sc-AST, from the entomoparasitic nematode Steinernema carpocapsaeY Jing, D Toubarro, Y Hao, N Simões - Molecular and biochemical …, 2010 - Elsevier... Total RNA from different nematode stages and from nematodes induced for 0, 6, 12, 24, 36, 48and 72 h was ...Primers for 18S rRNA were 18SF(5′-GCTAATCGGAAACGAAAGTC-3′) and18SR (5′-CATCCACCGAATCAAGAAAG-3′).Primers for Sc-AST were ASTF1 (5 ...5.8SF194/F195: Tm55℃TW81/AB28:18S:Me1f/Me1r: Tm 50℃18SF/18SR:28S:D2A/D3B: Tm 55℃mtDNAC2F3/1108: Tm 50℃C2F3/MRH106: Tm 50℃Incorporating molecular identification of Meloidogyne spp. into a large-scale regional nematode surveyTO Powers, PG Mullin, TS Harris, LA Sutton… - Journal of …, 2005 - ... For M. chitwoodi identification, the first of two PCR amplifications was conducted with primer set C2F3/ 1108 (5 GGTCAATGTTCAGAAATTTGTGG 3 and 5 TACCTTTGACCAATCACGCT 3) located in the COII and 16S ribosomal mitochondrial genes, respectively (Powers and ..Biometrical, biochemical, and molecular diagnosis of Portuguese Meloidogyne hispanica isolatesCM Maleita, MJ Simões, C Egas, RHC Curtis… - Plant …, 2012 - Am Phytopath Society... Mitochondrial DNA from isolates PtHi3 of M. his- panica and ItE of M. ethiopica were sequenced with the primer set C2F3(5′-GGT CAA TGT TCA GAA ATT TGT GG-3′) and MRH106(5′-AAT TTC TAA AGA CTT TTC TTA GT-3′) located in the COII gene and the 16S rRNA... [PDF]Prevalence, incidence and molecular identification of root-knot nematodes of tomato in PakistanM Ahmed - African Journal of Biotechnology, 2012 - ... DNA amplification of mtDNA with C2F3/1108 primers yielded a 1700 bp size productfor all three species of RKNs in comparison with 520 and 750 bp for M. chitwoodiand enterolobii, respectively, which were utilized as control.Plant-parasitic nematodes in sugarcane fields in Kitadaito Island (Okinawa), Japan, as a potential sugarcane growth inhibitorM Kawanobe, N Miyamaru, K Yoshida… - …, 2014 - ...Nematode identification using DNA sequence data Single nematodes were handpicked using a sterilised needle, rinsed with distilled water and placed on a glass slide. ...F194 (5-CGTAACAAGGTAGCTGTAG- 3 ) and F195 (5 -TCC TCC GCT AAA TGA TAT G-3 ) wereDetection of the pinewood nematode, Bursaphelenchus xylophilus, using a real-time polymerase chain reaction assayAX Cao, XZ Liu, SF Zhu, BS Lu - Phytopathology, 2005 - Am Phytopath Society... One to four nematodes were placed into 15 µl of double-distilled water on ... sterile 0.5-ml thin- walled PCR tube containing 8 µl of nematode lysis buffer ... Genus-specific primers F194 (5′- CGTAACAAGGTAGCTGTAG-3′) and 5368 (5′-TTTCACTCGCCGTTACTAAGG-3′) wereDe Luca F, Troccoli A, Duncan L W, et al. Pratylenchus speijeri n. sp.(Nematoda: Pratylenchidae), a new root-lesion nematode pest of plantain in West Africa. Nematology, 2012, 14(8): 987-1004.IGS sequence variation, group-I introns and the complete nuclear ribosomal DNA of the entomopathogenic fungus Metarhizium: excellent tools for isolate detection …MP Pantou, A Mavridou, MA Typas - Fungal Genetics and Biology, 2003 - Elsevier... 18SF, GCGAAACTGCGAATGGCT, This work. 18SR, GTAATGATCCCTCCGCTG, This work. TW81, GTTTCCGTAGGTGAACCTGC, Curran et al. (1994). AB28, ATATGCTTAAGTTCAGCGGGT, Curran et al. (1994). Ma-ITS2, GTCCACTGCCGTAAAACCCC, This work.Heterodera vallicola sp. n.(Tylenchida: Heteroderidae) from elm trees, Ulmus japonica (Rehd.) Sarg. in the Primorsky territory, the Russian Far East, with rDNA …AS Eroshenko, SA Subbotin… - Russian Journal of …, 2001 - ... DNA fragments were sequenced in both directions with TW81, AB28, 5.8SM2 (5'- CTTATCGGTGGATCACTCGG-3') or 5.8SM5 (5'-GGCGCAATGTGCATTCGA-3') primers witha BigDye Terminator Cycle Sequencing Ready Reaction Kit (PE Applied Biosystems, UK)Nematode universal primers:Gymnodinium nolleri Ellegaard et Moestrup sp. ined.(Dinophyceae) from Danish waters, a new species producing Gymnodinium catenatum-like cysts: molecular and …M Ellegaard, Y Oshima - Phycologia, 1998 - ... 1989) conserved positions 708-727 (D3A; 5' GACCCGTCTTG AAA CACGGA-3') and 1011-992(D3B; 5' TCGGAAGGAACCAGCTACTA-3'). Double-stranded and sin gle-stranded PCR amplifications were performed in a ther mocycler with an initial denaturation step of 3 min atNuclear and mitochondrial DNA sequence diversity in the Antarctic nematode Scottnema lindsayaeEM Courtright, DH Wall, RA Virginia… - Journal of …, 2000 - ... The primer pairs used were D2A (5-ACAAGTACCGTGAGGGAAAGTTG-3) and D2B(5-AATCCGTGTTTCAAGACGGG-3), D3A(5-GACCCGTCTTGAAA- CACGGA-3) and D3B(5-TCGGAAG- GAACCAGCTACTA-3) (Nunn, 1992), and mtA (5-GGCGGATCCTACATCGATGTTGAmiri S, Subbotin S A, Moens M. Identification of the beet cyst nematode Heterodera schachtii by PCR. European Journal of Plant Pathology, 2002, 108(6): 497-506.。