Fine mapping of pss1, a pollen semi-sterile gene in rice (Oryza sativa L.)
文献类型: 外文期刊
第一作者: Li, Wanchang
作者: Li, Wanchang;Jiang, Ling;Zhou, Shirong;Wang, Chunming;Liu, Linglong;Chen, Liangming;Ikehashi, Hiroshi;Wan, Jianmin
作者机构:
关键词: MALE MEIOTIC CYTOKINESIS;HYBRID STERILITY;ARABIDOPSIS-THALIANA;WIDE-COMPATIBILITY;MULTIPLE ALLELES;VARIETIES;PROTEIN;ENCODES;MARKERS;LOCUS
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.699; 五年影响因子:5.565 )
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收录情况: SCI
摘要: During routine seed increase procedures in rice, semi-sterile plants are common; however, such semi-sterility mutants in rice varieties have been only rarely analyzed genetically. W207-2 is a semi-sterile selection from the japonica rice variety Nipponbare. In this report, we found the female gamete of W207-2 was normal, and its semi-sterility was unaffected by growth duration but was conditioned by a recessive nuclear gene whose action leads to pollen semi-sterility and anther indehiscence, and the gene was named as pss1 (pollen semi-sterile). Using an F-2 population derived from the two parents W207-2 and Dular and a pooled DNA strategy, pss1 was mapped to an interval on chromosome 8 defined by the two SSR loci RM6356 and RS41. The position of pss1 was confirmed in another F-2 population derived from the cross W207-2 x Nipponbare. Over 2,000 homozygous pss1 segregants from the large W207-2 x Dular F-2 population were used to fine map pss1 to a 0.04 cM segment flanked by a CAPs marker L2 and a dCAPs L3 marker. Sequences for both markers are present on a single PAC clone, and the physical distance between them is about 28 kb. Analysis of the PAC sequence predicts the presence of five open reading frames, they are as follows: putative ribonuclease PH, putative avr9 elicitor response protein, kinesin1-like protein, putative protein RNP-D precursor and putative 40S ribosomal protein S13. This result would be helpful in cloning the pss1 gene.
分类号: Q3
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