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A Stress-Inducible Gene for 9-cis-Epoxycarotenoid Dioxygenase Involved in Abscisic Acid Biosynthesis under Water Stress in Drought-Tolerant Cowpea
Open accessAbstract
Four cDNA clones named CPRD (cowpea responsive to dehydration) corresponding to genes that are responsive to dehydration were isolated using differential screening of a cDNA library prepared from 10-h dehydrated drought-tolerant cowpea (Vigna unguiculata) plants. One of the cDNA clones has a homology to 9-cis-epoxycarotenoid dioxygenase (named VuNCED1), which is supposed to be involved in abscisic acid (ABA) biosynthesis. The GST (glutathioneS-transferase)-fused protein indicates a 9-cis-epoxycarotenoid dioxygenase activity, which catalyzes the cleavage of 9-cis-epoxycarotenoid. The N-terminal region of the VuNCED1 protein directed the fused sGFP (synthetic green-fluorescent protein) into the plastids of the protoplasts, indicating that the N-terminal sequence acts as a transit peptide. Both the accumulation of ABA and expression of VuNCED1 were strongly induced by drought stress in the 8-d-old cowpea plant, whereas drought stress did not trigger the expression of VuABA1 (accession no.AB030295) gene that encodes zeaxanthin epoxidase. These results indicate that the VuNCED1 cDNA encodes a 9-cis-epoxycarotenoid dioxygenase and that its product has a key role in the synthesis of ABA under drought stress.
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Citations
Cites
Genetic control of abscisic acid biosynthesis in maize
Tan, B. C., Schwartz, S. H., Zeevaart, J. A. D., & McCarty, D. R. (1997) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.94.22.12235 · Cited by 629
Cited by
Understanding plant responses to drought—from genes to the whole plant.
Chaves, M. M., Maroco, J. P., & Pereira, J. S. (2003) · Functional Plant Biology · doi:10.1071/fp02076 · Cited by 3,845
Taji, T., Seki, M., Satou, M., Sakurai, T., Kobayashi, M., Ishiyama, K., Narusaka, Y., Narusaka, M., Zhu, J.-K., & Shinozaki, K. (2004) · Plant Physiology · doi:10.1104/pp.104.039909 · Cited by 594
Self-citationEndo, A., Sawada, Y., Takahashi, H., Okamoto, M., Ikegami, K., Koiwai, H., Seo, M., Toyomasu, T., Mitsuhashi, W., Shinozaki, K., et al. (2008) · Plant Physiology · doi:10.1104/pp.108.116632 · Cited by 369
Self-citationStructural and biological aspects of carotenoid cleavage
Kloer, D. P., & Schulz, G. E. (2006) · Cellular and Molecular Life Sciences · doi:10.1007/s00018-006-6176-6 · Cited by 190
Ayaz, M., Ahmad, R., Shahzad, M., Khan, N., Shah, M. M., & Khan, S. A. (2015) · Scientia Horticulturae · doi:10.1016/j.scienta.2015.08.025 · Cited by 20
Metadata
- Authors
- Iuchi, S., Kobayashi, M., Yamaguchi-Shinozaki, K., & Shinozaki, K.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2000-06-01
- Volume
- 123
- Issue
- 2
- Pages
- 553-562
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2128056199
- Cited by
- 353
- References
- 1
- FWCI
- 21.25
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Iuchi, S., Kobayashi, M., Yamaguchi-Shinozaki, K., & Shinozaki, K. (2000). A Stress-Inducible Gene for 9-cis-Epoxycarotenoid Dioxygenase Involved in Abscisic Acid Biosynthesis under Water Stress in Drought-Tolerant Cowpea. Plant Physiology. https://doi.org/10.1104/pp.123.2.553
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