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Comparative Transcriptome Analysis between Low- and High-Cadmium-Accumulating Genotypes of Pakchoi (Brassica chinensis L.) in Response to Cadmium Stress
Abstract
To reduce cadmium (Cd) pollution of food chains, screening and breeding of low-Cd-accumulating cultivars are the focus of much study. Two previously identified genotypes, a low-Cd-accumulating genotype (LAJK) and a high-Cd-accumulating genotype (HAJS) of pakchoi (Brassica chinesis L.), were stressed by Cd (12.5 μM) for 0 h (T0), 3 h (T3) and 24 h (T24). By comparative transcriptome analysis for root tissue, 3005 and 4343 differentially expressed genes (DEGs) were identified in LAJK at T3 (vs T0) and T24 (vs T3), respectively, whereas 8677 and 5081 DEGs were detected in HAJS. Gene expression pattern analysis suggested a delay of Cd responded transcriptional changes in LAJK compared to HAJS. DEG functional enrichments proposed genotype-specific biological processes coped with Cd stress. Cell wall biosynthesis and glutathione (GSH) metabolism were found to involve in Cd resistance in HAJS, whereas DNA repair and abscisic acid (ABA) signal transduction pathways played important roles in LAJK. Furthermore, the genes participating in Cd efflux such as PDR8 were overexpressed in LAJK, whereas those responsible for Cd transport such as YSL1 were more enhanced in HAJS, exhibiting different Cd transport processes between two genotypes. These novel findings should be useful for molecular assisted screening and breeding of low-Cd-accumulating genotypes for pakchoi.
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Cites
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Ridley, B. L., O'Neill, M. A., & Mohnen, D. (2001) · Phytochemistry · doi:10.1016/s0031-9422(01)00113-3 · Cited by 1,912
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The ZIP family of metal transporters
Guerinot, M. L. (2000) · Biochimica et Biophysica Acta (BBA) - Biomembranes · doi:10.1016/s0005-2736(00)00138-3 · Cited by 1,200
VAN DE MORTEL, J. E., SCHAT, H., MOERLAND, P. D., VAN THEMAAT, E. V. L., VAN DER ENT, S., BLANKESTIJN, H., GHANDILYAN, A., TSIATSIANI, S., & AARTS, M. G. M. (2008) · Plant, Cell & Environment · doi:10.1111/j.1365-3040.2007.01764.x · Cited by 326
Cited by
Cadmium phytoremediation potential of Brassica crop species: A review
Rizwan, M., Ali, S., Zia ur Rehman, M., Rinklebe, J., Tsang, D. C. W., Bashir, A., Maqbool, A., Tack, F. M. G., & Ok, Y. S. (2018) · Science of The Total Environment · doi:10.1016/j.scitotenv.2018.03.104 · Cited by 386
Metadata
- Authors
- Zhou, Q., Guo, J.-J., He, C.-T., Shen, C., Huang, Y.-Y., Chen, J.-X., Guo, J.-H., Yuan, J.-G., & Yang, Z.-Y.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-06-07
- Volume
- 50
- Issue
- 12
- Pages
- 6485-6494
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2403378716
- Cited by
- 210
- References
- 4
- FWCI
- 9.91
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Zhou, Q., Guo, J.-J., He, C.-T., Shen, C., Huang, Y.-Y., Chen, J.-X., Guo, J.-H., Yuan, J.-G., & Yang, Z.-Y. (2016). Comparative Transcriptome Analysis between Low- and High-Cadmium-Accumulating Genotypes of Pakchoi (Brassica chinensis L.) in Response to Cadmium Stress. Environmental Science & Technology. https://doi.org/10.1021/acs.est.5b06326
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