Identification and validation of a major gene for kernel length at the P1 locus in Triticum polonicum
The Crop Journal, ISSN: 2214-5141, Vol: 10, Issue: 2, Page: 387-396
2022
- 12Citations
- 18Captures
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Article Description
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.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S221451412100163X; http://dx.doi.org/10.1016/j.cj.2021.07.006; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85115075574&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S221451412100163X; https://dx.doi.org/10.1016/j.cj.2021.07.006; http://sciencechina.cn/gw.jsp?action=cited_outline.jsp&type=1&id=7185742&internal_id=7185742&from=elsevier
Elsevier BV
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