Abstract
The ID1 gene regulates a leaf-generated signal required for the transition to flowering in maize. Like ID1, the OsID1 gene acts as a master switch for the transition from the vegetative to the reproductive phase in rice. In this study, an ID1 ortholog, BmID1, was isolated from Bambusa multiplex. The ORF of BmID1 was 1182-bp long, and encoded a peptide of 393 amino acids containing a putative NLS, four zinc finger motifs, and a conserved TRDFLG motif at the C terminal. BmID1 shared 64.9 % identity with the ID1 ortholog in Zea mays and 62.16 % with the ID1 ortholog in Oryza sativa. BmID1 was expressed very weakly in the developing leaves and shoots of flowering plants, but not in those of non-flowering plants. Unlike OsID1, BmID1 was expressed with a circadian rhythm. The BmID1 protein localized to the nucleus, suggesting that it might act as a transcription factor to regulate flowering in bamboo.
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Abbreviations
- ID1:
-
Indeterminate 1
- RID1:
-
Rice indeterminate 1
- IDD:
-
ID-domain
- Ehd2:
-
Early heading date2
- Ghd10:
-
Grains height date 10
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Acknowledgments
The authors thank Dr. Xuerong Shi for his critical reading of the manuscript. This work was supported by grants from the National Natural Science Foundation of China (Grant no. 30901155), the Natural Science Foundation of Zhejiang Province (Grant no. Y307499), and the National Program on Key Basic Research Project (973 Program) (2012CB723008).
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Guo, X., Guan, Y., Xiao, G. et al. Isolation and characterization of an Indeterminate1 gene, BmID1, from bamboo (Bambusa multiplex). J. Plant Biochem. Biotechnol. 25, 30–39 (2016). https://doi.org/10.1007/s13562-015-0304-z
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DOI: https://doi.org/10.1007/s13562-015-0304-z