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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kang, Xia Huang, Wei Tang, Ning Li, Zhengguo |
| Copyright Year | 2016 |
| Abstract | LrgA and LrgB genes have been identified as new components in regulation of programmed cell death (PCD) in bacteria. While in Arabidopsis, it has been documented that AtLrgB plays a crucial role in chloroplast development and photorespiration by acting as a glycolate/glycerate translocator (PLGG1) in the chloroplast inner membrane. However, little is known about LrgB homologs in other plant species, especially those with fleshy fruits. In this study, a homologous gene of AtLrgB, here designated SlLrgB, was identified in tomato. Similar to AtLrgB, structure analysis suggests that the LrgA and LrgB genes have evolved into two domains of the SlLrgB protein. Expression pattern analysis showed that SlLrgB accumulated mainly in green tissues and could be regulated by light, hormone, and abiotic stress treatments. Compared to wild-type plants, parts of SlLrgB overexpression plants displayed etiolated leaves and a growth retardation phenotype, with significantly reduced chlorophyll content both in leaves and fruits. The qPCR results revealed that the SGR gene, which was associated with chlorophyll degradation, was severely repressed. Two key genes in the chlorophyll biosynthesis pathway, CAO and POR, were also suppressed in the SlLrgB overexpression plants. Taken together, we suggest that SlLrgB may play important roles in the regulation of chlorophyll metabolism pathways in tomato. |
| Starting Page | 792 |
| Ending Page | 802 |
| Page Count | 11 |
| File Format | |
| ISSN | 07217595 |
| Journal | Journal of Plant Growth Regulation |
| Volume Number | 35 |
| Issue Number | 3 |
| e-ISSN | 14358107 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2016-02-20 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Programmed cell death LrgB gene Expression patterns Chlorophyll metabolism Plant Sciences Plant Anatomy/Development Plant Physiology Agriculture |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Agronomy and Crop Science |
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