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ความแตกต่างทางพันธุกรรมระหว่างข้าวไทยที่ไวต่อช่วงแสงและไม่ไวต่อช่วงแสง (Genetic differences between photoperiod-sensitive and non-photoperiod-sensitive Thai rice varieties) |
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| รหัสดีโอไอ | |
| Creator | 1. Yuppayao Kophimai1 2. Saran Cheenacharoen 3. Srikanjana Klayraung 4. Varaporn Sangtong |
| Title | ความแตกต่างทางพันธุกรรมระหว่างข้าวไทยที่ไวต่อช่วงแสงและไม่ไวต่อช่วงแสง (Genetic differences between photoperiod-sensitive and non-photoperiod-sensitive Thai rice varieties) |
| Publisher | Genetics Society of Thailand |
| Publication Year | 2557 |
| Journal Title | Thai Journal of Genetics |
| Journal Vol. | 7 |
| Journal No. | 2 |
| Page no. | in press |
| Keyword | rice, Hd1 gene, photoperiod sensitivity |
| ISSN | 8578665 |
| Abstract | Hd1 is a major gene controlling response to photoperiod in rice. This study aimed to investigate DNA sequences of Hd1 gene in Thai rice including photoperiod-sensitive varieties (Khaotahhaeng 17, Neawsunpatong, RD 6 and RD 15) and non- photoperiod-sensitive varieties (Phitsanulok 2, Phrae 1, RD 21 and Surin 1) to deepen understanding in photoperiod response mechanism in Thai rice. Among eight rice varieties, two base substitutions and length polymorphism of poly C (20-25 bp) were found in the promoter region. However, these variations may be not responsible for photoperiod sensitivity in Thai rice because the variable positions were not the transcription factor binding sites or were not different between photoperiod-sensitive and non-photoperiod-sensitive varieties. One base pair substitution was detected in the first exon but did not alter amino acid residue. In the second exon, deletion of four base pairs was found only in non-photoperiod-sensitive varieties. The deletion caused a frameshift in DNA sequences and changes in amino acid residues in the nuclear localization signal (CCT motif) and may therefore result in a loss of function of Hd1 gene in the non-photoperiod-sensitive varieties. |
