Os02g0744900
The rice Os02g0744900 was reported as LYL1 in 2013 [1] by researchers from China.
Contents
Annotated Information
Figure 1. Phenotype of the rice lyl1-1 mutant.[1].
Gene Symbol
- Os02g0744900 <=> OsLYL1,LYL1
Function
- LYL1 is the firstly defined gene involved in the reduction step from Chl-geranylgeranylated (Chl GG ) and geranylgeranyl pyrophosphate (GGPP) to Chl-phytol (Chl Phy ) and phytyl pyrophosphate (PPP) in rice. LYL1 can be induced by light and suppressed by darkness which is consistent with its potential biological functions.
- We concluded that LYL1 also plays an important role in response to high-light in rice.
Phenotypic analysis
- To investigate the molecular nature of rice chlorophyll metabolism, a light-induced yellow leaf mutant, designated as lyl1-1, was isolated from the progeny of a japonica rice ZH11 treated with 60 Co. Phenotypic observation showed that the lyl1-1 mutant grew slowly and produced premature yellowing leaves under natural conditions.
- The young leaves from leaf sheaths stayed green without any visible chlorosis (Figure 1 A–C).
- However, the leaves rapidly turned yellow in several days. To characterize the yellow leaf phenotype of lyl1-1, we measured the Chl content. The contents of Chl a, Chl b and total Chl in the lyl1-1 mutant were 25.8% to 40.6%, 33.0% to 41.0%, and 30.8% to 40.4% of these in ZH11 plants, respectively, in different growth stages (Table 1).
- These results indicated that the yellow leaves of the lyl1-1 mutant resulted from reduced Chl levels.
Expression
- Quantitative real-time PCR analysis showed that LYL1 is constitutively expressed in organs such as root, stem, leaf, knot and panicle (Figure 6A). However, the expression in leaf was relatively high, while and the expression in root was almost non-existent or at a very low level, indicating that the LYL1 gene has a specific expression pattern.
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Labs working on this gene
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Key Laboratory of the Ministry of Education for Plant Functional Genomics, Yangzhou University, Yangzhou, Jiangsu, China
- Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, China, 3 Shanghai Academy of Agricultural Sciences, Shanghai, China
References
- ↑ 1.0 1.1 Zhou Y, Gong Z, Yang Z, Yuan Y, Zhu J, Wang M, Yuan F, Wu S, Wang Z, Yi C, Xu T, Ryom M, Gu M, Liang G. Mutation of the light-induced yellow leaf 1 gene, which encodes a geranylgeranyl reductase, affects chlorophyll biosynthesis and light sensitivity in rice. PLoS One. 2013 Sep 10;8(9):e75299. doi: 10.1371/journal.pone.0075299
