The Paper learned from the Chinese Academy of Agricultural Sciences that the crop functional genome research and innovation team of the Institute of Crop Science, Chinese Academy of Agricultural Sciences, led by Wan Jianmin, an academician of the Chinese Academy of Agricultural Sciences, has cloned a new gene for regulating rice plant type, DHT1, and conducted research on its molecular mechanism for regulating rice tillering. In-depth analysis revealed a new pathway that regulates rice tillering by regulating the transcription and splicing of the strigolactone receptor gene D14.
The related research results were published online in The Plant Cell on June 7.
According to reports, rice plant type is an important factor determining rice yield, and strigolactone is a new type of plant hormone that has been discovered in recent years to regulate plant type. Its functions include inhibiting rice tillering, promoting plant height and root growth. Although the main genetic pathways of strigolactone signaling have been identified, the transcriptional and splicing regulatory mechanisms of genes in this pathway are still unknown.
Using a dwarf and multi-tiller rice mutant dht1 as material, the team of Academician Wan Jianmin identified a new monocot-specific nuclear heterogeneity ribonucleoprotein encoded by the DHT1 gene by map-based cloning, which is involved in regulation Intronic splicing of precursor messenger RNAs of numerous genes, including the strigolactone receptor gene D14 .
Mutation of dht1 results in blocked D14 precursor mRNA transcription and splicing, reducing D14 protein, hindering strigolactone signaling, and ultimately leading to the accumulation of D53 protein, a repressor of strigolactone signaling, which promotes tillering.
The research team believes that this work reveals a new pathway for regulating rice tillering by regulating the transcription and splicing of the strigolactone receptor gene D14 , and provides new insights for rice plant type improvement.
Original link: https://academic.oup.com/plcell/advance-article/doi/10.1093/plcell/koac169/6603715?guestAccessKey=bde3d6ca-6ef5-4044-aedd-000cd1047555
The related research results were published online in The Plant Cell on June 7.
According to reports, rice plant type is an important factor determining rice yield, and strigolactone is a new type of plant hormone that has been discovered in recent years to regulate plant type. Its functions include inhibiting rice tillering, promoting plant height and root growth. Although the main genetic pathways of strigolactone signaling have been identified, the transcriptional and splicing regulatory mechanisms of genes in this pathway are still unknown.
Using a dwarf and multi-tiller rice mutant dht1 as material, the team of Academician Wan Jianmin identified a new monocot-specific nuclear heterogeneity ribonucleoprotein encoded by the DHT1 gene by map-based cloning, which is involved in regulation Intronic splicing of precursor messenger RNAs of numerous genes, including the strigolactone receptor gene D14 .Mutation of dht1 results in blocked D14 precursor mRNA transcription and splicing, reducing D14 protein, hindering strigolactone signaling, and ultimately leading to the accumulation of D53 protein, a repressor of strigolactone signaling, which promotes tillering.
The research team believes that this work reveals a new pathway for regulating rice tillering by regulating the transcription and splicing of the strigolactone receptor gene D14 , and provides new insights for rice plant type improvement.
Original link: https://academic.oup.com/plcell/advance-article/doi/10.1093/plcell/koac169/6603715?guestAccessKey=bde3d6ca-6ef5-4044-aedd-000cd1047555
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