PMID- 33194433 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201117 IS - 2167-8359 (Print) IS - 2167-8359 (Electronic) IS - 2167-8359 (Linking) VI - 8 DP - 2020 TI - Cytological and molecular characterizations of a novel 2A nullisomic line derived from a widely-grown wheat cultivar Zhoumai 18 conferring male sterility. PG - e10275 LID - 10.7717/peerj.10275 [doi] LID - e10275 AB - A dwarf, multi-pistil and male sterile dms mutant was previously reported by us. However, the genetic changes in this dms are unclear. To examine the genetic changes, single nucleotide polymorphism (SNP) association, chromosome counting, and high-resolution chromosome fluorescence in situ hybridization (FISH) techniques were employed. By comparing tall plants (T) with dwarf plants (D) in the offspring of dms mutant plants, SNP association analysis indicated that most SNPs were on chromosome 2A. There were three types in offspring of dms plants, with 42, 41 and 40 chromosomes respectively. High-resolution chromosome painting analysis demonstrated that T plants had all 42 wheat chromosomes; the medium plants (M) had 41 chromosomes, lacking one chromosome 2A; while D plants had 40 wheat chromosomes, and lacked both 2A chromosomes. These data demonstrated that dms resulted from a loss of chromosome 2A. We identified 23 genes on chromosome 2A which might be involved in the development of stamens or pollen grains. These results lay a solid foundation for further analysis of the molecular mechanisms of wheat male sterility. Because D plants can be used as a female parent to cross with other wheat genotypes, dms is a unique germplasm for any functional study of chromosome 2A and wheat breeding specifically targeting genes on 2A. CI - (c)2020 Jiao et al. FAU - Jiao, Zhixin AU - Jiao Z AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. FAU - Zhu, Xinxin AU - Zhu X AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. FAU - Li, Huijuan AU - Li H AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. FAU - Liu, Zhitao AU - Liu Z AD - Nanjing Agricultural University, State key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing, Jiangsu, China. AD - Sichuan Academy of Agricultural Sciences, Crop Research Institue, Chengdu, Sichuan, China. FAU - Huang, Xinyi AU - Huang X AD - Nanjing Agricultural University, State key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing, Jiangsu, China. FAU - Wu, Nan AU - Wu N AD - Nanjing Agricultural University, State key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing, Jiangsu, China. FAU - An, Junhang AU - An J AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. FAU - Li, Junchang AU - Li J AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. FAU - Zhang, Jing AU - Zhang J AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. FAU - Jiang, Yumei AU - Jiang Y AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. FAU - Li, Qiaoyun AU - Li Q AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. FAU - Qi, Zengjun AU - Qi Z AD - Nanjing Agricultural University, State key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing, Jiangsu, China. FAU - Niu, Jishan AU - Niu J AD - Henan Agricultural University, National Centre of Engineering and Technological Research for Wheat / National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, Henan, China. LA - eng PT - Journal Article DEP - 20201030 PL - United States TA - PeerJ JT - PeerJ JID - 101603425 PMC - PMC7605228 OTO - NOTNLM OT - Chromosome OT - Nullisomic line OT - Pollen development OT - Wheat (Triticum aestivum L.) OT - dms COIS- The authors declare there are no competing interests. EDAT- 2020/11/17 06:00 MHDA- 2020/11/17 06:01 PMCR- 2020/10/30 CRDT- 2020/11/16 08:51 PHST- 2020/06/19 00:00 [received] PHST- 2020/10/08 00:00 [accepted] PHST- 2020/11/16 08:51 [entrez] PHST- 2020/11/17 06:00 [pubmed] PHST- 2020/11/17 06:01 [medline] PHST- 2020/10/30 00:00 [pmc-release] AID - 10275 [pii] AID - 10.7717/peerj.10275 [doi] PST - epublish SO - PeerJ. 2020 Oct 30;8:e10275. doi: 10.7717/peerj.10275. eCollection 2020.