A rice geranylgeranyl reductase is essential for chloroplast development |
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| Authors: | LIU Xi YI Xin YANG Yan-rong HUANG Qian-qian |
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| Affiliation: | Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, Huaiyin Normal University, Huai’an 223300, P.R.China |
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| Abstract: | Chloroplasts are essential for plant photosynthesis and growth. Many genes have been identified that regulate plant chloroplast development. However, it is not known at a molecular level how these genes regulate chloroplast biogenesis. In this study, we isolated a mutant ygl2(yellow-green leaf2) that exhibited a pigment-defective phenotype. YGL2 encodes a geranylgeranyl reductase, and in mutant ygl2, there was a single base change(T1361 G) located in the third exon of YGL2 that resulted in a missense mutation(L454 R) in the encoded product. Transmission electron microscopy revealed that chloroplast development was impaired in the ygl2 mutant. The expression levels of plastid-encoded genes were significantly altered in the ygl2 mutant. Furthermore, in a yeast two-hybrid assay, we found that YGL2 interacted with the RNA editing factor MORF8. |
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| Keywords: | chloroplast geranylgeranyl reductase |
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