首页|OsPPG encodes a pseudouridine-5'-phosphate glycosidase and regulates rice spikelet development

OsPPG encodes a pseudouridine-5'-phosphate glycosidase and regulates rice spikelet development

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Florets are the basic structural units of spikelets,and their morphogenesis determines the yield and qual-ity of rice grains.However,whether and how pseudouridine-5'-phosphate glycosidase participates in rice spikelet development remains an open question.In this study,we identified a novel gene,OsPPG,which encodes a peroxisome-localized pseudouridine-5'-phosphate glycosidase and regulates the development of rice spikelets.osppg mutants exhibited abnormal sterile lemma,lemma,palea,lodicule,stamens,and pistils;male sterility;shorter panicles;and reduced plant height.OsPPG was found to regulate several OsMADS genes,thereby affecting the morphogenesis of rice spikelets.Furthermore,metabolomics revealed that the OsPPG gene was involved in the decomposition of pseudouridine via the pyrimidine metabolism pathway and may affect the jasmonic acid signaling pathway.These results suggest that OsPPG is a key regulator of rice spikelet development.

OsPPGReproductive regulationSpikelet developmentRice

Rui Chen、Dagang Tian、Yarong Lin、Jiaqing Huang、Qinqin Yang、Yupei Li、Huaqing Liu、Shaohua Yang、Jingyang Chen、Shufen Zhou、Feng Wang、Shubiao Zhang

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Key Laboratory of Genetics,Breeding and Multiple Utilization of Crops,Ministry of Education/Key Laboratory of Biological Breeding for Fujian and Taiwan Crops,Ministry of Agriculture and Rural Affairs,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China

Fujian Key Laboratory of Genetic Engineering for Agriculture,Biotechnology Research Institute,Fujian Academy of Agricultural Sciences,Fuzhou 350003,Fujian,China

Institute of Resources,Environment and Soil Fertilizer,Fujian Academy of Agricultural Sciences,Fuzhou 350013,Fujian,China

Key Program of the National Natural Science of Fujian ProvinceScience and Technology Project of State Administration of Science,Technology and Industry for National DefenseSeed Innovation and Industrialization Project of Fujian ProvinceFujian Province Public Welfare Scientific Research Program

2022J02010zycxny20210032016R1018-8

2024

10.1016/j.cj.2024.05.004

作物学报(英文版)

作物学报(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.12(3)
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