Table 1.
Distribution of OY phytoplasma in tissues of M. striifrons, as detected by immunofluorescence microscopy.
| Tissues examined | No. of positive tissues of OY Amp antigens at different daasa | |||||||
|---|---|---|---|---|---|---|---|---|
| 7 days | 14 days | 21 days | 28 days | |||||
| No. detected / no. tested | ratio (%) | No. detected / no. tested | ratio (%) | No. detected / no. tested | ratio (%) | No. detected / no. tested | ratio (%) | |
| Alimentary canal | 13/20 | 65 | 12/20 | 60 | 13/20 | 65 | 22/28 | 79 |
| Filter chamber | 7/20 | 35 | 6/20 | 30 | 11/20 | 55 | 16/28 | 57 |
| Anterior midgut (epithelium) | 11/20 | 55 | 12/20 | 60 | 12/20 | 60 | 21/28 | 75 |
| Anterior midgut (limited area of visceral muscles) | 0/20 | 0 | 4/20 | 20 | 11/20 | 55 | 20/28 | 71 |
| Anterior midgut (extensive area of visceral muscles) | 0/20 | 0 | 0/20 | 0 | 4/20 | 20 | 13/28 | 46 |
| Middle midgut | 1/20 | 5 | 4/20 | 20 | 6/20 | 30 | 13/28 | 46 |
| Posterior midgut | 0/20 | 0 | 2/20 | 10 | 5/20 | 25 | 15/28 | 54 |
| Hindgut | 0/20 | 0 | 3/20 | 15 | 3/20 | 15 | 11/28 | 39 |
| Malpighian tubules | 0/20 | 0 | 1/20 | 5 | 8/20 | 40 | 15/28 | 54 |
| Salivary glands | 0/20 | 0 | 4/20 | 20 | 12/20 | 60 | 20/28 | 71 |
| I cell | 0/20 | 0 | 1/20 | 5 | 3/20 | 15 | 7/28 | 25 |
| II cell | 0/20 | 0 | 3/20 | 15 | 4/20 | 20 | 9/28 | 32 |
| III cell (surface) | 0/20 | 0 | 4/20 | 20 | 12/20 | 60 | 20/28 | 71 |
| III cell (inside) | 0/20 | 0 | 0/20 | 0 | 3/20 | 15 | 9/28 | 32 |
| IV cell | 0/20 | 0 | 2/20 | 10 | 5/20 | 25 | 16/28 | 57 |
| V cell | 0/20 | 0 | 2/20 | 10 | 4/20 | 20 | 10/28 | 36 |
| VI cell | 0/20 | 0 | 0/20 | 0 | 1/20 | 5 | 4/28 | 14 |
adaas: days after acquisition start on the diseased plants.