GAO Xiao-ke,JIANG Gang-qiang,LI Xin,et al.Establishment of a visual detection method for Mycosphaerella linicola based on RPA-CRISPR/Cas12a[J].Chinese Journal of Oil Crop Sciences,2026,48(04):72-80.
GAO Xiao-ke,JIANG Gang-qiang,LI Xin,et al.Establishment of a visual detection method for Mycosphaerella linicola based on RPA-CRISPR/Cas12a[J].Chinese Journal of Oil Crop Sciences,2026,48(04):72-80.DOI: 10.19802/j.issn.1007-9084.2025172.
Establishment of a visual detection method for Mycosphaerella linicola based on RPA-CRISPR/Cas12a
Naumov is an important quarantine pathogen that can damage the whole growth period of flax. China imports more
than 100 000 tons of flax seeds from abroad every year.The risk of transmission and diffusion of this disease is increasing.The original traditional separation and identification methods are difficult to meet the needs of rapid customs clearance due to their long cycle and complicated operation.Based on RPA-CRISPR/Cas12a technology
this study designed specific primers and three crRNAs for the β-tubulin gene (
TUB2
) sequence of brown spot disease of flax
and selected the one with the best cutting efficiency for subsequent detection system optimization experiments.The optimized experimental results showed that the suitable reaction time of RPA is 20 minutes.The appropriate concentration of fluorescence reporter molecules was 50 nmol/L
and the appropriate concentration of test strip report moleculars was 200 nmol/L.The established detection method was used to detect and verify the simulated fungal seed.The results showed that the system could detect 100 conidia in samples with 5% fungal seed band rate.This method can complete the detection in 80 minutes
and the sensitivity can reach 34 ag/μL. The whole detection process is simple to operate
highly sensitive and short in time
which provides technical support for the real-time rapid detection of
Halley S , Bradiey C A , Lukach J R , et al . Distribution and severity of pasmo on flax in north Dakota and evaluation of fungicides and cultivars for management [J]. Plant Dis , 2004 , 88 ( 10 ): 1123 - 1126 . DOI: 10.1094/PDIS.2004.88.10.1123 http://dx.doi.org/10.1094/PDIS.2004.88.10.1123 .
Liqiang He , Yao Sui , Yanru Che , et al . Genome-wide association studies using multi-models and multi-SNP datasets provide new insights into pasmo resistance in flax . Technical Advances in Plant Science , 2023 , 12 : 14 .
Lapalu N , Simon A , Demen B , et al . Complete genome sequences of Septoria linicola : a resource for studying a damaging flax pathogen [J]. Mol Plant Microbe Interact , 2023 , 36 ( 1 ): 59 - 63 . DOI: 10.1049/MPMI-09-22-0185-A http://dx.doi.org/10.1049/MPMI-09-22-0185-A .
Jinek M , Chylinski K , Fonfara I , et al . A programmable dual-RNA-guided DNA endonuclease in adaptive bacterial immunity [J]. Science , 2012 , 337 ( 6096 ): 816 - 821 . DOI: 10.1126/science.1225829 http://dx.doi.org/10.1126/science.1225829 .
Cong L , Ran F A , Cox D , et al . Multiplex genome engineering using CRISPR/Cas systems [J]. Science , 2013 , 339 ( 6121 ): 819 - 823 . DOI: 10.1126/science.1231143 http://dx.doi.org/10.1126/science.1231143 .
Establishment of a rapid visualisation assay for RPA/CRISPR-Cas12a of Diaporthe helianthi
Development of a recombinase polymerase amplification (RPA) method for rapid detection of transgenic maize Ruifeng 125
Methylene blue and β-carotene double fading method in soybean breeding of lipoxygenase free
Relationship between waterlogging tolerance indexes and yield traits at rapeseed germination stage under waterlogging stress
Laboratory toxicity bioassay and field efficacy evaluation of insecticides against white grubs
Related Author
LUO Ming
ZHAI Jun-li
HU Zi-hui
YASHENG Guzhaliayi
WANG Chong
DONG Jing-han
GAO Xiao-ke
XIN Shu-xiang
Related Institution
Urumqi Customs
Kalasu Customs
Oil Crops Research Institute, Chinese Academy of Agricultural Sciences/ Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs
Key Laboratory of Soybean Biology of Education Ministry, Northeast Agricultural University
MOA Key Laboratory of Biology and Genetic Improvement of Soybean,Nanjing Agricultural University