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  • Open Access


    Identification and Characterization of a Novel Yellow Leaf Mutant yl1 in Rice

    Xiaofang Zeng1,#, Guangzheng Li1,#, Nu’an Liu2, Yan Li1, Jianrong Li1, Xiaozhen Huang1, Degang Zhao1,2,,*

    Phyton-International Journal of Experimental Botany, Vol.91, No.11, pp. 2419-2437, 2022, DOI:10.32604/phyton.2022.021199

    Abstract Leaf-color mutants play an important role in the study of chlorophyll metabolism, chloroplast development, and photosynthesis system. In this study, the yellow leaf 1 (yl1) rice mutant was identified from the ethyl methane sulfonate-treated mutant progeny of Lailong, a glutinous japonica rice landrace cultivated in Guizhou Province, China. Results showed that yl1 exhibited yellow leaves with decreased chlorophyll content throughout the growth period. Chloroplast development in the yl1 mutant was disrupted, and the grana lamellae was loosely packed and disordered. RNA sequencing and real-time quantitative polymerase chain reaction (qRT-PCR) analysis revealed that the chlorophyll synthesis-related genes OsCHLH, OsCHLM, OsCHLG, PORB,… More >

  • Open Access


    DWARF and SMALL SEED1, a Novel Allele of OsDWARF, Controls Rice Plant Architecture, Seed Size, and Chlorophyll Biosynthesis

    Yan Li1, Renquan Huang1, Jianrong Li1, Xiaozhen Huang1, Xiaofang Zeng1,*, Degang Zhao1,2,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.1, pp. 111-127, 2021, DOI:10.32604/phyton.2020.013933

    Abstract Plant architecture is a vital agronomic trait to control yield in rice (Oryza sativa L.). A dwarf and small seed 1 (dss1) mutant were obtained from the ethyl methanesulfonate (EMS) mutagenized progeny of a Guizhou glutinous landrace cultivar, Lipingzabianhe. The dss1 mutant displayed phenotypes similar to those of brassinosteroid (BR) deficient mutants, such as dwarfing, dark green and rugose erect leaves, small seeds, and loner neck internode panicles with primary branching. In our previous study, the underlying DSS1 gene was isolated, a novel allele of OsDWARF (OsBR6ox) that encodes a cytochrome P450 protein involved in the BR biosynthetic pathway by… More >

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