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将来自（L.）7V染色体的一个成株期抗条锈病基因转移至面包小麦。

Transferring an Adult-Plant Stripe-Rust Resistance Gene from Chromosome 7V of (L.) to Bread Wheat.

作者信息

Hou Fu, Jin Yinyu, Hu Jin, Kong Lingna, Liu Xiaoxue, Xing Liping, Cao Aizhong, Zhang Ruiqi

机构信息

State Key Laboratory of Crop Genetics & Germplasm Enhancement and Application/JCIC-MCP, College of Agronomy, Nanjing Agricultural University, Nanjing 210095, China.

Huaiyin Institute of Agricultural Sciences of Xuhuai Area in Jiangsu, Huaian 223001, China.

出版信息

Plants (Basel). 2024 Jul 7;13(13):1875. doi: 10.3390/plants13131875.

DOI:10.3390/plants13131875
PMID:38999715
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11244515/
Abstract

Stripe rust ( West. f.sp. , ) is a destructive disease that seriously threatens wheat production globally. Exploring novel resistance genes for use in wheat breeding is an urgent need, as continuous evolution frequently leads to a breakdown of host resistance. Here, we identified a set of wheat- 01I139 (V#6) disomic introgression lines for the purpose of determining their responses to a mixture of isolates CYR32, CYR33 and CYR34 at both seedling and adult-plant stages. The results showed that all introgression lines exhibited high susceptibility at the seedling stage, with infection-type (IT) scores in the range of 6-8, whereas, for chromosomes 5V#6 and 7V#6, disomic addition lines NAU5V#6-1 and NAU7V#6-1 displayed high resistance at the adult-plant stage, indicating that adult-plant resistance (APR) genes were located on them. Further, in order to transfer the stripe-rust resistance on chromosome 7V#6, four new wheat- introgression lines were identified, by the use of molecular cytogenetic approaches, from the self-pollinated seeds of 7D and 7V#6, in double monosomic line NAU7V#6-2. Among them, NAU7V#6-3 and NAU7V#6-4 were t7V#6L and t7V#6S monosomic addition lines, and NAU7V#6-5 and NAU7V#6-6 were homozygous T7DS·7V#6L and T7DL·7V#6S whole-arm translocation lines. Stripe-rust tests and genetic analyses of chromosome 7V#6 introgression lines revealed a dominant APR gene designated as on the chromosome arm 7V#6S. Comparison with the homozygous T7DL·7V#6S translocation line and the recurrent parent NAU0686 showed no significant differences in yield-related traits. Thus, T7DL·7V#6S whole-arm translocation with the APR gene provided a valuable germplasm for breeding for resistance.

摘要

条锈病（Puccinia striiformis West. f. sp. tritici）是一种极具破坏性的病害，严重威胁着全球小麦生产。由于病原菌不断进化常常导致宿主抗性丧失，因此探索用于小麦育种的新抗性基因迫在眉睫。在此，我们鉴定了一组小麦-中间偃麦草（Thinopyrum intermedium）（V#6）二体代换系，目的是确定它们在苗期和成株期对CYR32、CYR33和CYR34混合菌系的反应。结果表明，所有代换系在苗期均表现出高感，侵染型（IT）评分为6-8，而对于5V#6和7V#6染色体，二体附加系NAU5V#6-1和NAU7V#6-1在成株期表现出高抗，表明成株抗性（APR）基因位于其上。此外，为了转移7V#6染色体上的条锈病抗性，利用分子细胞遗传学方法，从双单体品系NAU7V#6-2的7D和7V#6自交种子中鉴定出4个新的小麦-中间偃麦草代换系。其中，NAU7V#6-3和NAU7V#6-4是t7V#6L和t7V#6S单体附加系，NAU7V#6-5和NAU7V#6-6是纯合的T7DS·7V#6L和T7DL·7V#6S全臂易位系。7V#6代换系的条锈病抗性测试和遗传分析表明，在7V#6S染色体臂上存在一个显性APR基因，命名为YrV#6。与纯合的T7DL·7V#6S易位系和轮回亲本NAU0686相比，产量相关性状无显著差异。因此，携带APR基因YrV#6的T7DL·7V#6S全臂易位系为抗病育种提供了宝贵的种质资源。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/59fa27e3bd95/plants-13-01875-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/7269b40599cf/plants-13-01875-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/7da4c5260750/plants-13-01875-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/5eb91983ef82/plants-13-01875-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/98564bfaee05/plants-13-01875-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/155b3b56439d/plants-13-01875-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/fd8cd3939057/plants-13-01875-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/59fa27e3bd95/plants-13-01875-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/7269b40599cf/plants-13-01875-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/7da4c5260750/plants-13-01875-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/5eb91983ef82/plants-13-01875-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/98564bfaee05/plants-13-01875-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/155b3b56439d/plants-13-01875-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/fd8cd3939057/plants-13-01875-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/99eb/11244515/59fa27e3bd95/plants-13-01875-g007.jpg

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