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Loss of Function of OsARG Resulted in Pepper-Shaped Husk in Indica Rice

文献类型： 外文期刊

作者： Zheng, Yan 1 ; Mwamburi, Mjomba Fredrick 1 ; Liu, Huaqing 3 ; Wang, Feng 3 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Life Sci, Fuzhou 350002, Peoples R China

2.Fujian Agr & Forestry Univ, Fujian Key Lab Crop Breeding Design, Fuzhou 350002, Peoples R China

3.Fujian Acad Agr Sci, Inst Biotechnol, Fuzhou 350003, Peoples R China

关键词： OsARG; loss-of-function mutation; pepper-like husk; indica rice

期刊名称：LIFE-BASEL （ 影响因子：3.817； ）

ISSN：

年卷期： 2021 年 11 卷 6 期

页码：

收录情况： SCI

摘要： Grain shape is one of the most important and complex traits determining the grain yield in rice. In this study, we discovered two rice mutants with defective shape spikelets, designated as psh1-1/2 (pepper-shaped husk 1-1/2), which were both isolated from the tissue-culture-regenerated plants of indica cultivar Minghui 86. The two mutants showed the same mutant phenotypes, containing pepper-shaped spikelets; shorter, smaller and compact panicles; very low seed-setting rate; high percentage of split grains; and lower grain width. Genetic analysis indicated that the mutant phenotypes were controlled by a recessive gene. Gene mapping indicated that the target gene PSH1 was located on the short arm of chromosome 4. Sequencing analysis revealed that the two mutants each had a different nonsense mutation in OsARG, confirming that the target gene is OsARG. Compared with the previously reported OsARG mutant nglf-1, psh1-1/2 possessed some distinct mutant phenotypes, probably because of the influence of different genetic background, suggesting that OsARG may function differently under different genetic backgrounds.

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