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| Reference | ||
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| Author | Wang J., Zhang C., Li Y. | |
| Title | Genome-Wide Identification and Expression Profiles of 13 Key Structural Gene Families Involved in the Biosynthesis of Rice Flavonoid Scaffolds. | |
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Abstract: Flavonoids are a class of key polyphenolic secondary metabolites with broad functions in plants, including stress defense, growth, development and reproduction. <i>Oryza sativa</i> L. (rice) is a well-known model plant for monocots, with a wide range of flavonoids, but the key flavonoid biosynthesis-related genes and their molecular features in rice have not been comprehensively and systematically characterized. Here, we identified 85 key structural gene candidates associated with flavonoid biosynthesis in the rice genome. They belong to 13 families potentially encoding chalcone synthase (CHS), chalcone isomerase (CHI), flavanone 3-hydroxylase (F3H), flavonol synthase (FLS), leucoanthocyanidin dioxygenase (LDOX), anthocyanidin synthase (ANS), flavone synthase II (FNSII), flavanone 2-hydroxylase (F2H), flavonoid 3'-hydroxylase (F3'H), flavonoid 3',5'-hydroxylase (F3'5'H), dihydroflavonol 4-reductase (DFR), anthocyanidin reductase (ANR) and leucoanthocyanidin reductase (LAR). Through structural features, motif analyses and phylogenetic relationships, these gene families were further grouped into five distinct lineages and were examined for conservation and divergence. Subsequently, 22 duplication events were identified out of a total of 85 genes, among which seven pairs were derived from segmental duplication events and 15 pairs were from tandem duplications, demonstrating that segmental and tandem duplication events play important roles in the expansion of key flavonoid biosynthesis-related genes in rice. Furthermore, these 85 genes showed spatial and temporal regulation in a tissue-specific manner and differentially responded to abiotic stress (including six hormones and cold and salt treatments). RNA-Seq, microarray analysis and qRT-PCR indicated that these genes might be involved in abiotic stress response, plant growth and development. Our results provide a valuable basis for further functional analysis of the genes involved in the flavonoid biosynthesis pathway in rice. |
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| Journal | Genes (Basel) | |
| Country | China | |
| Volume | 13(3) | |
| Pages | ||
| Year | 2022 | |
| PubMed ID | 35327963 | |
| PubMed Central ID | 8951560 | |
| DOI | 10.3390/genes13030410 | |
| URL | - | |
| Relation | ||
| Gene | 2ODD10 2ODD15 2ODD17 2ODD19 2ODD2 2ODD3 2ODD5 2ODD6 2ODD8 ANR1 ANR2 ANR3 ANR4 ANR5 ANR6 ANS ANS2 CCR15 CCR29 CHI1 CHI2 CHI3 CHI5 CHI6 CHI7 CHS CHS19 CHS23 CYP75A11 CYP75B4 CYP93G1 CYP93G2 DFR3 DFR4 DFR5 F3'H F3'H1 F3'H2 F3'H3 F3'H4 F3'H5 F3'H6 F3'H8 F3H1 F3H2 F3H3 FLS2 LAP6 LAR LDOX4 LDOX5 LDOX7 LDOX8 LDOX9 ODD21 PEL9 PKS1 PKS10 PKS11 PKS12 PKS13 PKS14 PKS15 PKS16 PKS17 PKS18 PKS19 PKS2 PKS20 PKS23 PKS24 PKS25 PKS27 PKS3 PKS4 PKS5 PKS6 PKS7 PKS8 PKS9 RD _ _ _ | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
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Stages in Each Organ - Muant Lines (Gene) |
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| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
