Gene for controlling male reproduction and development of rice and application of gene
A male reproductive and genetic technology, applied in the fields of agriculture and plant biology, can solve problems such as difficult to use and difficult to reproduce efficiently, and achieve the effect of increasing yield and expanding the use of heterosis
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Embodiment 1
[0020] Design of targets; design 2 targets for genes with unknown functions. One target is designed in the 5' region and the functional domain of the ORF, so that mutation of any one target can result in loss of function, or the sequence between the two targets can be knocked out. A high GC% of the target sequence can improve the targeting efficiency, so the target preferably contains 11-14 C / G (including U6 transcription initiation point G). Blast the target genome with the candidate target sequence + NGG (add tens of bases upstream and downstream) (choose Somewhat similar sequences (blastn) to avoid similarity between the 3' end of the target sequence + NGG and other functional genes and genome sequences.
Embodiment 2
[0022] Detection of mutation sites; detection of targeting effects of transgenic T0 plants: Transformants with successful targeting often have single base insertions or deletions of several bases at the target site. With the target as the center, primers were synthesized for PCR amplification at about 200-300 bp on both sides. Key points: Design internal primers at about 150-250bp upstream of the target as sequencing primers (the sequencing quality at this distance is the best, but not less than 100bp and not greater than 400bp), and directly sequence the PCR products (do not use PCR amplification) If the modified primers are used again for sequencing, a high level of heterogeneous signal will be generated). If there are all overlapping peaks from a certain base, it indicates a heterozygous mutation or a biallelic mutation.
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