为探究丛枝菌根真菌对拟南芥〔Arabidopsis thaliana(Linn.)Heynh.〕耐盐性的影响,测定了接种摩西斗管囊霉〔Funneliformis mosseae(T.H.Nicolson et Gerd.)C.Walker et A.Schüler〕和细凹无梗囊霉(Acaulospora scrobiculata Trap...为探究丛枝菌根真菌对拟南芥〔Arabidopsis thaliana(Linn.)Heynh.〕耐盐性的影响,测定了接种摩西斗管囊霉〔Funneliformis mosseae(T.H.Nicolson et Gerd.)C.Walker et A.Schüler〕和细凹无梗囊霉(Acaulospora scrobiculata Trappe)后及(或)质量体积分数2%NaCl胁迫下拟南芥种子萌发率、幼苗鲜质量和根长及抗逆相关基因表达情况。结果显示:在无NaCl胁迫下,接种细凹无梗囊霉显著(P<0.05)提高了拟南芥种子萌发率,接种2种菌均显著提高了幼苗鲜质量而降低了幼苗根长;在NaCl胁迫下,接种2种菌均明显提高了种子萌发率及幼苗鲜质量和根长,且以细凹无梗囊霉的影响更为明显。在NaCl胁迫和非胁迫下,接种摩西斗管囊霉使PAP1、PDF1、POD表达水平显著上调,接种细凹无梗囊霉使NCED3表达水平显著上调。总体来看,摩西斗管囊霉和细凹无梗囊霉均能够促进拟南芥种子萌发和幼苗生长并提高其耐盐性,且细凹无梗囊霉的作用更为明显。展开更多
OPM<sub>05</sub>-M<sub>2100</sub>,the specific RAPD fragment of Bursaphelenchus xylophilus,was collected from agarose gels and purified.Then,the purified fragment was inserted into the pGEM<...OPM<sub>05</sub>-M<sub>2100</sub>,the specific RAPD fragment of Bursaphelenchus xylophilus,was collected from agarose gels and purified.Then,the purified fragment was inserted into the pGEM<sup>R</sup> -T Vector that was transformed into Escherichia.coli and cloned and sequenced.Based on the sequence of RAPD marker,the sequences characterized amplified region(SCAR) primers were designed by the aid of the software Oligo5.0.The forward primer is M<sub>05</sub>F<sub>2</sub> (5’-CGGGT CATGG CTGGA GGTAT CGT-3’),and the backward primer is M<sub>05</sub>R<sub>1</sub>(5’-TGGCT CAATG GCAAA TCCTT CGTA-3’.The specific fragment (OPM<sub>05</sub>-M<sub>2100</sub>) was successfully converted to SCAR marker(SCAR-M<sub>05</sub>-X<sub>600</sub>) by using M<sub>05</sub> F<sub>2</sub>/R<sub>1</sub>,which was the specific markers of B.xylophilus.Then, the DNA of 92 isolates of Bursaphelenchus,B. mucronatus,B.hofmanni,Aphelenchoides macronucleatus and Seinura sp.which were isolated from dead pines,were marked,and the DNA of a single nematode extracted with a simple method was detected using this set of specific primers.The results indicated that the PCR product of all 81 isolates of B.xylophilus was a clear and bright fragment about 600 bp with M<sub>05</sub> F<sub>2</sub>/R<sub>1</sub>.But eight isolates of B. mucronatus,one B.hofmanni,one A.macronucleatus and one Seinura sp.had no any fragments.Assay M<sub>05</sub> F<sub>2</sub>/R<sub>1</sub> also successfully detected single pinewood nematode.Therefore,the specific pairwises would be used for constructing identification kits of B. xylophilus,implementing the aim of quick detection, and achieving the purpose of identify juvenile successfully.展开更多
文摘为探究丛枝菌根真菌对拟南芥〔Arabidopsis thaliana(Linn.)Heynh.〕耐盐性的影响,测定了接种摩西斗管囊霉〔Funneliformis mosseae(T.H.Nicolson et Gerd.)C.Walker et A.Schüler〕和细凹无梗囊霉(Acaulospora scrobiculata Trappe)后及(或)质量体积分数2%NaCl胁迫下拟南芥种子萌发率、幼苗鲜质量和根长及抗逆相关基因表达情况。结果显示:在无NaCl胁迫下,接种细凹无梗囊霉显著(P<0.05)提高了拟南芥种子萌发率,接种2种菌均显著提高了幼苗鲜质量而降低了幼苗根长;在NaCl胁迫下,接种2种菌均明显提高了种子萌发率及幼苗鲜质量和根长,且以细凹无梗囊霉的影响更为明显。在NaCl胁迫和非胁迫下,接种摩西斗管囊霉使PAP1、PDF1、POD表达水平显著上调,接种细凹无梗囊霉使NCED3表达水平显著上调。总体来看,摩西斗管囊霉和细凹无梗囊霉均能够促进拟南芥种子萌发和幼苗生长并提高其耐盐性,且细凹无梗囊霉的作用更为明显。
文摘OPM<sub>05</sub>-M<sub>2100</sub>,the specific RAPD fragment of Bursaphelenchus xylophilus,was collected from agarose gels and purified.Then,the purified fragment was inserted into the pGEM<sup>R</sup> -T Vector that was transformed into Escherichia.coli and cloned and sequenced.Based on the sequence of RAPD marker,the sequences characterized amplified region(SCAR) primers were designed by the aid of the software Oligo5.0.The forward primer is M<sub>05</sub>F<sub>2</sub> (5’-CGGGT CATGG CTGGA GGTAT CGT-3’),and the backward primer is M<sub>05</sub>R<sub>1</sub>(5’-TGGCT CAATG GCAAA TCCTT CGTA-3’.The specific fragment (OPM<sub>05</sub>-M<sub>2100</sub>) was successfully converted to SCAR marker(SCAR-M<sub>05</sub>-X<sub>600</sub>) by using M<sub>05</sub> F<sub>2</sub>/R<sub>1</sub>,which was the specific markers of B.xylophilus.Then, the DNA of 92 isolates of Bursaphelenchus,B. mucronatus,B.hofmanni,Aphelenchoides macronucleatus and Seinura sp.which were isolated from dead pines,were marked,and the DNA of a single nematode extracted with a simple method was detected using this set of specific primers.The results indicated that the PCR product of all 81 isolates of B.xylophilus was a clear and bright fragment about 600 bp with M<sub>05</sub> F<sub>2</sub>/R<sub>1</sub>.But eight isolates of B. mucronatus,one B.hofmanni,one A.macronucleatus and one Seinura sp.had no any fragments.Assay M<sub>05</sub> F<sub>2</sub>/R<sub>1</sub> also successfully detected single pinewood nematode.Therefore,the specific pairwises would be used for constructing identification kits of B. xylophilus,implementing the aim of quick detection, and achieving the purpose of identify juvenile successfully.