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| Content Provider | Springer Nature Link |
|---|---|
| Author | Sherrier, D. J. Borisov, A. Y. Tikhovich, I. A. Brewin, N. J. |
| Copyright Year | 1997 |
| Abstract | Using a series of antibody probes as markers of symbiosome development, we have investigated the impaired development of symbiosomes in nodules formed by the plant mutant line Sprint2Fix− (sym31). In wild-type pea (Pisum sativum L.) nodules, bacteria differentiate into large pleiomorphic, nitrogen-fixing bacteroids and are singly enclosed within a peribacteroid membrane. In thesym31 mutant, several small undifferentiated bacteroids were often enclosed within one peribacteroid membrane, or were found within a vacuole-like compartment. In wild-type nodules, the monoclonal antibody JIM18, which recognizes a plasmalemma glycolipid antigen, bound to the juvenile peribacteroid membrane, and did not recognize the mature peribacteroid membrane. However, in the mutant, the antibody bound to all peribacteroid membranes within the nodule, suggesting that differentiation of the peribacteroid membrane was arrested. Another antibody, MAC266, recognized plant glycoproteins which normally accumulate in symbiosomes at a late stage of nodule development. Binding of this antibody was much reduced within mutant nodules, labelling only a few mature cells. Similarly, MAC301, which normally recognizes a lipopolysaccharide epitope expressed on differentiated bacteroids prior to the induction of nitrogenase, failed to react with rhizobial cell extracts isolated from nodules of thesym31 mutant. On the basis of these developmental markers, the symbiosomes ofsym31 nodules appeared to be blocked at an early stage of development. The distribution of infection structures was also found to be abnormal in the mutant nodules. Models of symbiosome development are presented and discussed in relation to the morphological and developmental lesions observed in thesym31 mutant. |
| Starting Page | 57 |
| Ending Page | 68 |
| Page Count | 12 |
| File Format | |
| ISSN | 0033183X |
| Journal | Protoplasma |
| Volume Number | 199 |
| Issue Number | 1-2 |
| e-ISSN | 16156102 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 1997-01-01 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Rhizobium Legume Symbiosis Pea Nodules Peribacteroid membranes Cell Biology Plant Sciences Zoology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Plant Science Medicine |
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