| Autor: |
Songyue Chai, Qin Yao, Rui Liu, Wenhui Xiang, Xue Xiao, Xing Fan, Jian Zeng, Lina Sha, Houyang Kang, Haiqin Zhang, Dan Long, Dandan Wu, Yonghong Zhou, Yi Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Crop Journal, Vol 10, Iss 2, Pp 387-396 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2214-5141 |
| DOI: |
10.1016/j.cj.2021.07.006 |
| Popis: |
Kernel size, one of the traits that determine wheat yield, is controlled by multiple quantitative trait loci. Polish wheat (Triticum polonicum) has elongated and plump kernel and is a valuable material for breeding high-yielding wheat cultivars. However, genes or loci determining kernel length (KL) in Polish wheat are unknown. We identified and validated a major KL gene, KL-PW, at the P1 locus in Polish wheat. KL-PW is VRT-A2, which encodes a MIKC-type MADS-box protein (MADS55). An insertion/deletion mutation in intron 1 of VRT-A2PW led to an alternatively spliced transcript, VRT-A2PW2. Quantitative PCR analysis showed that VRT-A2PW was more highly expressed in developing seeds than was VRT-A2Ailanmai. Brassinosteroid (BR) sensitivity experiment and the expression of BR-related genes indicated that VRT-A2PW functions as a positive regulator of BR responses. VRT-A2PW significantly increased KL of wheat. These findings not only reveal the molecular basis of KL-PW in controlling KL, but also provide a valuable genetic resource for increasing kernel size in wheat. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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