Table 2.
Structural changes in chloroplasts caused by HopI1PmaES4326. Mean value +/− standard error is shown. P, t-test; dpi, days post inoculation; v, vector; chl, chloroplast. See Fig. 4A for the structures measured for a, b, c. Experiments in A and C were done on separate occasions and thus cannot be directly compared.
A. 16-day old A. thaliana plants | |||||||
---|---|---|---|---|---|---|---|
Col | Col/HopI1 | P-value | |||||
chloroplast/cell cross section | 8.9±0.4 (n=15 cells) | 8.7± 0.5 (n=15 cells) | 0.7 | ||||
starch grains/chloroplast section | 2.7±0.2 (n=24 chl.) | 2.4± 0.3 (n=30 chl.) | 0.5 | ||||
area of starch/chloroplast | 47±1% (n=24 chl.) | 23±3% (n=30 chl.) | 0.003 | ||||
length of grana (a) | 382±12 nm (n=26) | 335±13 nm (n=27) | 0.001 | ||||
height of grana (b) | 167±9 nm (n=42) | 187±5 nm (n=27) | 0.004 | ||||
Thickness of thylakoid (c) | 9.3±0.4 nm (n=20) | 11±0.5 nm (n=20) | 0.01 | ||||
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B. Transiently transformed N. benthamiana, 2 dpi with A. tumefaciens at OD600=0.6. | |||||||
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vector | HopI1 | HopI1(QAA) | n | P-value | P-value | P-value | |
pCB302-3 | JJ30 | JJ202 | v-JJ30 | v-JJ202 | JJ30–JJ202 | ||
| |||||||
a [nm] | 414±8 | 369±11 | 416±10 | 26 | 0.002 | 0.90 | 0.01 |
b [nm] | 212±6 | 246±14 | 208±8 | 29 | 0.04 | 0.71 | 0.009 |
c [nm] | 17.5±0.7 | 21.3±1.3 | 17.0±0.8 | 20 | 0.03 | 0.68 | 0.047 |
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C. A. thaliana infected with ΔhopI1 PmaES4326 carrying indicated constructs at OD600=0.001, 3 dpi | |||||||
ΔhopI1 | +vector | +HopI1 | +HopI1(QAA) | n | P-value | P-value | P-value |
| |||||||
pCKTR | JJ19 | JJ207 | v-JJ19 | v-JJ207 | JJ19–JJ207 | ||
| |||||||
a [nm] | 377± 9 | 317±9 | 373±12 | 23 | 0.0002 | 0.77 | 0.002 |
b [nm] | 99±5 | 124±6 | 105±5 | 28 | 0.001 | 0.34 | 0.001 |
c [nm] | 9.1± 0.3 | 10.6±0.5 | 9.4±0.4 | 21 | 0.003 | 0.55 | 0.033 |