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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhang, M. Yang, X. E. |
| Copyright Year | 2014 |
| Abstract | The effects of Cd on the chlorophyll fluorescence parameters of hyperaccumulating ecotype (HE) and non-hyperaccumulating ecotype (NHE) of Sedum alfredii Hance were studied. The photosystem II (PSII) photochemical efficiency of HE plants was not affected, and the non-photochemical quenching (NPQ) value was significantly increased under Cd treatment. In the NHE plants, Cd treatment caused significant loss in PSII photochemical efficiency and NPQ value. Gene expression analysis showed that both ecotypes of S. alfredii accumulated more than twofold higher PsbS (PSII subunit S) transcript levels than control plants after exposure to Cd. Overexpression of PsbS gene isolated from HE plants (SaPsbS) enhanced tobacco growth. The transgenic tobacco possessed greater NPQ capacity in the presence of 100 μM Cd and accumulated the significantly higher Cd content in shoots than the wild-type plants. These data indicate that the SaPsbS may function in NPQ capacity and protect the PSII reaction center in HE plants. |
| Starting Page | 427 |
| Ending Page | 433 |
| Page Count | 7 |
| File Format | |
| ISSN | 10214437 |
| Journal | Russian Journal of Plant Physiology |
| Volume Number | 61 |
| Issue Number | 4 |
| e-ISSN | 16083407 |
| Language | English |
| Publisher | Pleiades Publishing |
| Publisher Date | 2014-06-24 |
| Publisher Place | Moscow |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Sedum alfredii Nicotiana tabacum hyperaccumulator cadmium non-photochemical quenching photosystem II subunit S (PsbS) gene Plant Physiology Plant Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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