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- Title
Cloning and Expression Analysis of SiCDPK4, a Gene Related to Heterosis in Foxtail Millet [(Setaria italica (L.) P. Beauv.)].
- Authors
Liu, Dan; Li, Suying; Wang, Lina; Li, Qiang; Cui, Yanjiao; Dai, Xiaodong; Zhao, Zilong; Chen, Chao; Li, Junxia; Liu, Zhengli
- Abstract
Heterosis, which refers to the superior performance of an F1 hybrid compared to its parents, has been widely used in crop production to increase grain yield. However, the mechanism responsible for heterosis still remains to be explored. Here, we report involvement of Setaria italica Calcium-Dependent Protein Kinase 4 (SiCDPK4) in yield-related heterosis of foxtail millet (Setaria italica (L.) P. Beauv.). Transient expression of SiCDPK4-GFP in foxtail millet protoplasts located SiCDPK4 to the plasma membrane. Analysis of its spatial and temporal expression pattern revealed that SiCDPK4 expressed mainly in leaves, but also in roots and spikes. At the filling stage, significantly higher levels of the SiCDPK4 transcript were observed in the leaves and spikes of hybrids with strong yield heterosis than those with medium and weak heterosis, suggesting that SiCDPK4 is most likely related to yield heterosis in foxtail millet.
- Subjects
HETEROSIS; FOXTAIL millet; MOLECULAR cloning; CALCIUM-dependent protein kinase; SETARIA; CELL membranes; GRAIN yields
- Publication
Journal of Plant Growth Regulation, 2019, Vol 38, Issue 2, p513
- ISSN
0721-7595
- Publication type
Article
- DOI
10.1007/s00344-018-9866-z