气候变化领域集成服务门户(CCPortal): Fine mapping and distribution analysis of hybrid necrosis genes Ne1 and Ne2 in wheat in China

CCPortal

DOI	10.1007/s00122-021-04023-6
	Fine mapping and distribution analysis of hybrid necrosis genes Ne1 and Ne2 in wheat in China
	Zhang, Min; Lv, Shikai; Wang, Yanzhen; Wang, Siwen; Chen, Chunhuan; Wang, Changyou; Wang, Yajuan; Zhang, Hong; Ji, Wanquan
通讯作者	Zhang, H ; Ji, WQ (通讯作者)，Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China. ; Ji, WQ (通讯作者)，Minist Agr, Shaanxi Res Stn Crop Gene Resources & Germplasm E, Yangling 712100, Shaanxi, Peoples R China.
发表日期	2022
ISSN	0040-5752
EISSN	1432-2242
起始页码	1177
结束页码	1189
卷号	135 期号:4
英文摘要	Key message Flanking markers useful for identifying hybrid necrosis alleles were identified by fine mapping Ne1 and Ne2 and the distribution of the two necrosis genes was investigated in Chinese elite wheat varieties. Hybrid necrosis of wheat is caused by the interaction of two dominant complementary genes Ne1 and Ne2 present separately in normal parents and is regarded as a barrier to gene transfer in wheat breeding. However, the necrosis alleles still occur at a high frequency in modern wheat varieties. In this study, we constructed two high-density genetic maps of Ne1 and Ne2 in winter wheat. In these cultivars, Ne1 was found to be located in a span interval of 0.50 centimorgan (cM) on chromosome 5BL delimited by markers Nwu_5B_4137 and Nwu_5B_5114, while Ne2 co-segregated with markers Lseq102 and TC67744 on 2BS. Statistical analysis confirmed that the dosage effect of Ne1 and Ne2 also existed in moderate and severe hybrid necrosis systems, and the symptoms of necrosis can also be affected by the genetic background. Furthermore, we clarified the discrete distribution and proportion of the Ne1 and Ne2 in the 10 China's agro-ecological production zones. We concluded that 26.2% and 33.2% of the 1364 cultivars (lines) were genotyped with Ne1Ne1ne2ne2 and ne1ne1Ne2Ne2, respectively and introduced modern cultivars should directly affect the frequencies of necrosis genes in modern Chinese cultivars (lines), especially that of Ne2. Taking investigations in spring wheat together, we proposed that hybrid necrosis alleles could positively affect breeding owing to their linked excellent genes such as Lr13. Additionally, based on the pedigrees and hybridization tests, we speculated that the Ne1 and Ne2 in winter wheat may directly originate from wild emmer and introduced cultivars or hexaploid triticale, respectively.
关键词	SUPPLEMENTARY LIST GEOGRAPHICAL-DISTRIBUTION VARIETIES GENOTYPE BARRIER LR13
语种	英语
WOS研究方向	Agriculture ; Plant Sciences ; Genetics & Heredity
WOS类目	Agronomy ; Plant Sciences ; Genetics & Heredity ; Horticulture
WOS记录号	WOS:000749016800002
来源期刊	THEORETICAL AND APPLIED GENETICS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254801
作者单位	[Zhang, Min; Lv, Shikai; Wang, Yanzhen; Wang, Siwen; Chen, Chunhuan; Wang, Changyou; Wang, Yajuan; Zhang, Hong; Ji, Wanquan] Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China; [Lv, Shikai] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota AEPB, Xining 810008, Qinghai, Peoples R China; [Lv, Shikai] Qinghai Prov Key Lab Crop Mol Breeding, Xining 810008, Qinghai, Peoples R China; [Wang, Yajuan; Ji, Wanquan] Minist Agr, Shaanxi Res Stn Crop Gene Resources & Germplasm E, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Min,Lv, Shikai,Wang, Yanzhen,et al. Fine mapping and distribution analysis of hybrid necrosis genes Ne1 and Ne2 in wheat in China[J]. 中国科学院西北生态环境资源研究院,2022,135(4).
APA	Zhang, Min.,Lv, Shikai.,Wang, Yanzhen.,Wang, Siwen.,Chen, Chunhuan.,...&Ji, Wanquan.(2022).Fine mapping and distribution analysis of hybrid necrosis genes Ne1 and Ne2 in wheat in China.THEORETICAL AND APPLIED GENETICS,135(4).
MLA	Zhang, Min,et al."Fine mapping and distribution analysis of hybrid necrosis genes Ne1 and Ne2 in wheat in China".THEORETICAL AND APPLIED GENETICS 135.4(2022).