|
Female gametophytic defects in the Atmnd1 mutant. |
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| Ovule Stages |
1n |
2n |
4n |
8n |
MES |
Degen |
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|
|
||||||||||||
| m |
+ |
m |
+ |
m |
+ |
m |
+ |
m |
+ |
m |
+ |
|
|
|
||||||||||||
| 3-1 |
31 |
100 |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
69 |
ND |
| 3-2 |
25 |
60 |
9 |
40 |
ND |
ND |
ND |
ND |
ND |
ND |
66 |
ND |
| 3-4 |
39 |
2 |
4 |
40 |
7 |
52 |
ND |
5 |
ND |
ND |
50 |
0.8 |
| 3-6 |
32 |
ND |
6 |
2 |
0.4 |
7 |
0.2 |
7 |
0.6 |
83 |
60 |
1.2 |
|
Stages of female gametophyte development relative to ovule stages in the Atmnd1 mutant and wild type. A total of 759 and 637 ovules were scored for the Atmnd1 mutant and wild-type respectively. Megagametogenesis defects are evident from stage 3-1 in case of the mutant, which leads to embryo sac arrest and eventually its degeneration. Ovule stages are according to [54]: 3-1, 3-2, and 3-4 are postmeiotic stages of the sporophyte with respect to elongation of the integuments where the wild type gametophyte would normally reach the 1n, 2n, and 4n stages; 3-6 corresponds to a mature ovule prior to fertilization. MES, Mature embryo sac; Degen, Degenerated embryo sac; M, mutant; +, wild type; ND, Not detected. | ||||||||||||
Panoli et al. BMC Molecular Biology 2006 7:24 doi:10.1186/1471-2199-7-24 |
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