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| Content Provider | PubMed Central |
|---|---|
| Author | Sheen, J. Y. Bogorad, L. |
| Abstract | Bundle sheath chloroplasts of maize leaves contain about one-fourth as much light-harvesting chlorophyll a/b binding protein of photosystem II (LHCP-II) as do mesophyll chloroplasts. We have determined that this difference is, in part, the result of differential expression of different LHCP-II genes. We have prepared and partially characterized cDNA clones specific for six LHCP-II genes of maize. Transcripts of these six LHCP-II genes are present at vastly different levels and account for about 95% of total LHCP-II mRNAs in bundle sheath and mesophyll cells of illuminated dark-grown maize leaves. Three genes are preferentially expressed in mesophyll cells, and their mRNAs constitute about 54% of the total LHCP-II transcripts in greening (24 hr) maize leaves. Two genes are expressed equally in bundle sheath and mesophyll cells. Most interestingly, the RNA of one gene that contributes about 8% of the total LHCP-II transcripts in leaves greening for 24 hr is present at a much higher level in bundle sheath than in mesophyll cells. Moreover, immunoblot analysis of maize thylakoids reveals at least five sizes of LHCP-II; these also differ from one another in their relative abundance in bundle sheath and mesophyll cells of developing maize leaves. |
| Starting Page | 7811 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 20 |
| Volume Number | 83 |
| Language | English |
| Publisher Date | 1986-10-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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