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Genotypic Variation in Spatial Distribution of Fe in Rice Grains in Relation to Phytic Acid Content and Ferritin Gene Expression

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Rice science 2020年第3期27卷 227-236页

作者： Anurag MISHRA mdshamim MdWASIM Siddiqui Akanksha SINGH Deepti SRIVASTAVA K.N.SINGH Department of Plant Molecular Biology and Genetic Engineering Narendra Deva University of Agriculture and TechnologyKumarganjFaizabadUttar Pradesh 224229India Division of Genetics ICAR-Indian Agricultural Research InstituteNew Delhi 110012India Department of Molecular Biology and Genetic Engineering Dr.Kalam Agricultural CollegeKishanganj(Bihar Agricultural UniversitySabourBhagalpur)Bihar 855107India Department of Post-Harvest Technology Bihar Agricultural UniversitySabourBhagalpurBihar 813210India Integral Institute of Agricultural Science and Technology(IIAST)Integral University Kursi RoadDasauliUttar Pradesh 226026India

Rice varieties having high Fe concentration in the endospermic region can be used as a good source for Fe deficit *** this study,303 Oryza sativa varieties and 1 Oryza rufipogon accession were assessed for spatial Fe accumulation in grains by Prussian blue staining *** ferritin protein distribution in grains was visualized by immunohistochemistry,and ferritin expression was assessed in selected rice varieties using semi-quantitative reverse transcription *** popular rice varieties,namely Sarjoo 52,Madhukar and Jalmagna,and the *** variety showed Fe in all the regions of grains,and the highest Fe concentration was observed in the embryo *** high-yielding varieties like Swarna,Swarna Sub 1,CSR13 and NDRR359 had lower Fe concentration in the embryo *** highest Fe concentration was detected in ***(49.8μg/g),followed by Sarjoo 52(26.1μg/g)and Madhukar(25.7μg/g).Phytic acid concentration was the minimum in ***(5.75 mg/g)followed by Sarjoo 52(5.83 mg/g).Western blot and semi-quantitative reverse transcription PCR showed higher expression of ferritin gene in ***,Sarjoo 52 and *** conclusion,*** and Sarjoo 52 had higher Fe concentration in the embryo regions as well as endosperm and aleurone layer,whereas the other varieties had lower Fe concentration in the *** 52 could be used as a donor in the rice breeding program for the generation of new varieties with elevated grain Fe concentration.

关键词： bio-fortification iron accumulation ferritin tissue-specific localization iron deficit population

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