中国水稻科学 ›› 2015, Vol. 29 ›› Issue (5): 457-466.DOI: 10.3969/j.issn.1001G7216.2015.05.002
孙廉平1,2, 张迎信2, 张沛沛2, 杨正福2, 占小登2, 沈希宏2, 张振华2, 胡霞2, 轩丹丹2, 吴玮勋2, 曹立勇2,*(), 程式华1,2,*()
收稿日期:
2015-02-04
修回日期:
2015-05-06
出版日期:
2015-09-10
发布日期:
2015-09-10
通讯作者:
曹立勇,程式华
作者简介:
*通讯录作者:E-mail:caoliyong@cass.cn;shcheng@mail.hz.zj.cn
基金资助:
Lian-ping SUN1,2, Ying-xin ZHANG2, Pei-pei ZHANG2, Zheng-fu YANG2, Xiao-deng ZHAN2, Xi-hong SHEN2, Zhen-hua ZHANG2, Xia HU2, Dan-dan XUAN2, Wei-xun WU2, Li-yong CAO2,*(), Shi-hua CHENG1,2,*()
Received:
2015-02-04
Revised:
2015-05-06
Online:
2015-09-10
Published:
2015-09-10
Contact:
Li-yong CAO, Shi-hua CHENG
About author:
*Corresponding author:E-mailcaoliyong@cass.cn;shcheng@mail.hz.zj.cn
摘要:
在60Co-γ射线辐射诱变籼稻中恢8015的突变体库内发现了一个花器官发育突变体,暂命名为开颖不育突变体ohms1(open hull and male sterile 1)。ohms1突变体表现为颖花开裂,在雄蕊和柱头之间形成类似内外稃的结构,使得突变体的颖花形成类似“三齿稃”状的三个颖壳,小穗完全不育,花粉育性为60%~70%,但自交不结实。遗传分析和基因定位结果表明,ohms1受一对隐性单基因控制,位于第3染色体短臂KY2和KY29标记之间,物理距离约42 kb,该区域包含4个开放阅读框ORFs。进一步序列分析发现,突变体中一个编码MADS盒的基因LOC_Os03g11614的第5内含子末位碱基由A突变为G。酶切实验和cDNA测序证实,该基因的第5内含子未被剪切,致使该基因的第6外显子所编码的14个氨基酸完整缺失,但并未造成该蛋白MADS结构域的改变或移码。qRT-PCR结果显示,突变体中OsMADS1 基因的表达水平显著降低,水稻开花调控因子和内外稃发育调控基因的表达量也发生了显著变化。说明该基因对水稻花器官发育尤其是内外稃发育和小花原基的分化具有重要作用。
孙廉平, 张迎信, 张沛沛, 杨正福, 占小登, 沈希宏, 张振华, 胡霞, 轩丹丹, 吴玮勋, 曹立勇, 程式华. 一个由可变剪接造成的水稻开颖不育突变体ohms1 的鉴定及基因定位[J]. 中国水稻科学, 2015, 29(5): 457-466.
Lian-ping SUN, Ying-xin ZHANG, Pei-pei ZHANG, Zheng-fu YANG, Xiao-deng ZHAN, Xi-hong SHEN, Zhen-hua ZHANG, Xia HU, Dan-dan XUAN, Wei-xun WU, Li-yong CAO, Shi-hua CHENG. Characterization and Gene Mapping of an Open Hull Male Sterile Mutant ohms1 Caused by Alternative Splicing in Rice[J]. Chinese Journal OF Rice Science, 2015, 29(5): 457-466.
引物名称 Primer name | 上游引物 Forward primer(5'-3') | 下游引物 Reverse primer(5'-3') | 实验目的 Purpose |
---|---|---|---|
InD44 | GGAATCCCTCCCTTCTTGTC | GGTCGGTAAAGACGGTGAAA | Fine mapping |
KY2 | GTGGGAAGAAGAACATCAACTG | GCACACAAGATAAACCCAATCAGC | Fine mapping |
KY12 | ACCACGAGGGTGACCGTAGA | GCGAGGGTTGATGAGATAGCA | Fine mapping |
KY17 | CGAGAGGCGAAGGAAATAGAACG | CTCCTCCTCCTCCTGGTTCTCC | Fine mapping |
KY25 | CCATGGTCGCCATTGACACG | CCTGCTATAACACTCGCACAGATGC | Fine mapping |
KY26 | GGTGGTGAGCCAAGAACTGACC | CCTCAAGGAATCCTCGTAAGTCG | Fine mapping |
KY29 | CCAAGTGTGTCCGAGCTTAGTGC | TGAGTCAAAGCGAAAGTCAACAGG | Fine mapping |
RM7576 | CTGCCCTGCCTTTTGTACAC | GCGAGCATTCTTTCTTCCAC | Fine mapping |
InD45 | CCAGGGATCTTCTCATCCAA | CCTGGCTAGCATACCACACA | Fine mapping |
InD46 | GCCATTGATCTTCTGCAGGT | TTTGTTGTCAATGCCCTGTT | Fine mapping |
RD0304 | GGCGTCACTGCTCGTA | GCCTGAAGCGTCCACA | Fine mapping |
CAPS1 | GCCATCGATCACCCTGAAAGTC | CTGATCAGCAAGAACAGTGC | ohms1 site detection |
CKY | AGCCAAACCACACCACCATAAAG | AGGACACTGTTTGCATTGGCT | cDNA sequencing |
表1 本研究所用的引物
Table 1 Primers used in this study.
引物名称 Primer name | 上游引物 Forward primer(5'-3') | 下游引物 Reverse primer(5'-3') | 实验目的 Purpose |
---|---|---|---|
InD44 | GGAATCCCTCCCTTCTTGTC | GGTCGGTAAAGACGGTGAAA | Fine mapping |
KY2 | GTGGGAAGAAGAACATCAACTG | GCACACAAGATAAACCCAATCAGC | Fine mapping |
KY12 | ACCACGAGGGTGACCGTAGA | GCGAGGGTTGATGAGATAGCA | Fine mapping |
KY17 | CGAGAGGCGAAGGAAATAGAACG | CTCCTCCTCCTCCTGGTTCTCC | Fine mapping |
KY25 | CCATGGTCGCCATTGACACG | CCTGCTATAACACTCGCACAGATGC | Fine mapping |
KY26 | GGTGGTGAGCCAAGAACTGACC | CCTCAAGGAATCCTCGTAAGTCG | Fine mapping |
KY29 | CCAAGTGTGTCCGAGCTTAGTGC | TGAGTCAAAGCGAAAGTCAACAGG | Fine mapping |
RM7576 | CTGCCCTGCCTTTTGTACAC | GCGAGCATTCTTTCTTCCAC | Fine mapping |
InD45 | CCAGGGATCTTCTCATCCAA | CCTGGCTAGCATACCACACA | Fine mapping |
InD46 | GCCATTGATCTTCTGCAGGT | TTTGTTGTCAATGCCCTGTT | Fine mapping |
RD0304 | GGCGTCACTGCTCGTA | GCCTGAAGCGTCCACA | Fine mapping |
CAPS1 | GCCATCGATCACCCTGAAAGTC | CTGATCAGCAAGAACAGTGC | ohms1 site detection |
CKY | AGCCAAACCACACCACCATAAAG | AGGACACTGTTTGCATTGGCT | cDNA sequencing |
图1 中恢8015野生型(左)与突变体(右)在抽穗期的植株及花器官发育形态
Fig. 1. Phenotype of plant and floral organ of wild type Zhonghui 8015(left)and ohms1 mutant(right)at heading stage.
组合 Combination | F1结实率 Seed-setting rate of F1/% | F2 | |||
---|---|---|---|---|---|
野生型植株数 No. of wild-type plants | 突变表型植株数 No. of mutant-type plants | ||||
ohms1/中花11 ohms1/Zhonghua 11 | 85.22 | 374 | 113 | 0.84 | 3.84 |
ohms1/02428 | 88.76 | 4658 | 1496 | 1.57 |
表2 突变体基因ohms1的遗传分析
Table 2 Genetic analysis of the mutant ohms1.
组合 Combination | F1结实率 Seed-setting rate of F1/% | F2 | |||
---|---|---|---|---|---|
野生型植株数 No. of wild-type plants | 突变表型植株数 No. of mutant-type plants | ||||
ohms1/中花11 ohms1/Zhonghua 11 | 85.22 | 374 | 113 | 0.84 | 3.84 |
ohms1/02428 | 88.76 | 4658 | 1496 | 1.57 |
图5 实时荧光定量PCR分析野生型与突变体中水稻花器官发育相关基因的表达
Fig. 5. Expression analysis of rice floral-organ-development-associated genes between the wild-type and the mutant by qRT-PCR.
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