Wheat tissue active oxygen fluorescence labeling method
A fluorescent labeling, reactive oxygen species technology, applied in the field of plant stress and physiological response, can solve the problems of lack of scientific detection method for the comprehensive production of reactive oxygen species, large differences in production, difficult plant stress resistance or aging process, etc. Achieve precise resistance or aging process, easy operation, improve the effect of fixing and loading
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Embodiment 1
[0029] A fluorescent labeling method for reactive oxygen species in plant tissue, applied to wheat (Jimai 22) stem tissue under nutrient stress (nitrogen deficiency), the specific operation is as follows:
[0030] a. Prepare wheat tissue sample marker loading buffer, pipette 5 ml of sample marker loading buffer into a vessel with a volume of 10 ml;
[0031] Prepare 10 mM Tris-HCl buffer solution (pH 7.2); prepare DCFH-DA stock solution with DMSO at a concentration of 5 mM; prepare fluorescent labeling loading solution with buffer solution, containing DCFH-DA at a final concentration of 50 μM, and a final concentration of 50 mM KCl and glutaraldehyde at a final concentration of 2.5% (volume percent).
[0032] b. Cut the wheat stalks into tissue blocks with a length of 0.5 cm, cut them evenly along the longitudinal axis, and divide them into two;
[0033] c. Rinse the tissue block prepared in step b with the sample marker loading buffer twice, then place it in the vessel contai...
Embodiment 2
[0040] A fluorescent labeling method for reactive oxygen species in plant tissue, applied to leaf tissue of wheat (Jimai 22) in the senescence stage of grain filling, the specific operation is as follows:
[0041] a. Prepare wheat tissue sample marker loading buffer, pipette 5 ml of sample marker loading buffer into a vessel with a volume of 10 ml;
[0042] The preparation method of the above label loading buffer is as follows: prepare 10 mM PBS buffer solution (pH 7.4); prepare DCFH-DA mother solution with ethanol at a concentration of 3 mM; prepare fluorescent label loading solution with buffer solution at a final concentration of 30 μM DCFH-DA, KCl at a final concentration of 50 mM, and glutaraldehyde at a final concentration of 2.5% (volume percent);
[0043] b. Cut the wheat leaves into 0.5 cm tissue pieces;
[0044] c. Rinse step (2) with the sample marker loading buffer to prepare the tissue block twice, then put it into the container prepared in step (1), seal it and pu...
Embodiment 3
[0049] A fluorescent labeling method for reactive oxygen species in plant tissue, applied to leaf tissue of wheat (Jimai 22) under drought stress, the specific operation is as follows:
[0050] a. Prepare wheat tissue sample marker loading buffer, pipette 5 ml of sample marker loading buffer into a vessel with a volume of 10 ml;
[0051] Prepare 10 mM PBS buffer (pH 7.2); prepare DCFH-DA stock solution with methanol at a concentration of 3 mM; use buffer to prepare a fluorescently labeled loading solution, containing DCFH-DA at a final concentration of 30 μM, and a final concentration of 50 mM KCl and glutaraldehyde at a final concentration of 2.2-2.8% (volume percent).
[0052] b. Cut the wheat leaves into 0.5 cm tissue pieces;
[0053] c. Rinse step (2) with the sample marker loading buffer to prepare the tissue block twice, then put it into the container prepared in step (1), seal it and pump air, so that all the plant tissue blocks sink to the bottom of the container;
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