Dot immunobinding assay method with chlorophyll removal for the detection of southern rice black-streaked dwarf virus.
Southern rice black-streaked dwarf virus (SRBSDV), a new virus from Fiji, has seriously damaged rice crops in southern China and northern Vietnam in recent years. This virus is difficult to diagnose in the early stages of infection, and is very destructive at the late stage. In the present study, a dot immunobinding assay (DIBA) that has a high sensitivity for diagnosing SRBSDV was developed. Two kinds of treatment for the DIBA were evaluated to determine the most effective one for removing chlorophyll interferences via rice extraction. The first included several reagents to remove chlorophyll, namely, the alkaline reagents like magnesium oxide and alumina oxide, the adsorbent reagents like activated carbon and bentonite, as well as the extraction agent acetone. The second and third treatments, which were used to remove chlorophyll in blot membrane-nitrocellulose and polyvinylidene fluoride (PVDF), included several organic solvents containing methanol, ethanol, acetone, ethyl acetate, and diethyl ether. The results showed that activated carbon and methanol yielded the best contrasting purple color for the infected samples by decreasing the chlorophyll content.
State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China.
Zhuo
Z
Chen
Jiaju
J
Liu
Mengjiao
M
Zeng
Zhenchao
Z
Wang
Dandan
D
Yu
Chengjun
C
Yin
Linhong
L
Jin
Song
S
Yang
Baoan
B
Song
D002734:Chlorophyll / Q000737:chemistry*; D015151:Immunoblotting / Q000379:methods*; D012275:Oryza / Q000821:virology*; D010935:Plant Diseases / Q000821:virology*; D010936:Plant Extracts / Q000737:chemistry; D010942:Plant Viruses / Q000276:immunology / Q000302:isolation & purification*; D012087:Reoviridae / Q000276:immunology / Q000302:isolation & purification*; D012997:Solvents / Q000737:chemistry
D010936:Plant Extracts; D012997:Solvents; D002734:Chlorophyll