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The Arabidopsis NAC Transcription Factor VNI2 Integrates Abscisic Acid Signals into Leaf Senescence via the COR/RD Genes
Open accessAbstract
Leaf aging is a highly regulated developmental process, which is also influenced profoundly by diverse environmental conditions. Accumulating evidence in recent years supports that plant responsiveness to abiotic stress is intimately related with leaf longevity. However, molecular mechanisms underlying the signaling crosstalks and regulatory schemes are yet unknown. In this work, we demonstrate that an abscisic acid (ABA)–responsive NAC transcription factor VND-INTERACTING2 (VNI2) integrates ABA-mediated abiotic stress signals into leaf aging by regulating a subset of COLD-REGULATED (COR) and RESPONSIVE TO DEHYDRATION (RD) genes. The VNI2 gene was induced by high salinity in an ABA-dependent manner. In addition, spatial and temporal expression patterns of the VNI2 gene are correlated with leaf aging and senescence. Accordingly, leaf aging was delayed in transgenic plants overexpressing the VNI2 gene but significantly accelerated in a VNI2-deficient mutant. The VNI2 transcription factor regulates the COR and RD genes by binding directly to their promoters. Notably, transgenic plants overexpressing the COR or RD genes exhibited prolonged leaf longevity. These observations indicate that the VNI2 transcription factor serves as a molecular link that integrates plant responses to environmental stresses into modulation of leaf longevity.
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Citations
Cited by
Plant Nitrogen Assimilation and Use Efficiency
Xu, G., Fan, X., & Miller, A. J. (2012) · Annual Review of Plant Biology · doi:10.1146/annurev-arplant-042811-105532 · Cited by 2,114
Abscisic Acid Synthesis and Response
Finkelstein, R. (2013) · The Arabidopsis Book · doi:10.1199/tab.0166 · Cited by 1,154
Wu, A., Allu, A. D., Garapati, P., Siddiqui, H., Dortay, H., Zanor, M.-I., Asensi-Fabado, M. A., Munné-Bosch, S., Antonio, C., Tohge, T., et al. (2012) · The Plant Cell · doi:10.1105/tpc.111.090894 · Cited by 601
Leaf Senescence: Systems and Dynamics Aspects
Woo, H. R., Kim, H. J., Lim, P. O., & Nam, H. G. (2019) · Annual Review of Plant Biology · doi:10.1146/annurev-arplant-050718-095859 · Cited by 566
A transposable element in a NAC gene is associated with drought tolerance in maize seedlings
Mao, H., Wang, H., Liu, S., Li, Z., Yang, X., Yan, J., Li, J., Tran, L.-S. P., & Qin, F. (2015) · Nature Communications · doi:10.1038/ncomms9326 · Cited by 542
Metadata
- Authors
- Yang, S.-D., Seo, P. J., Yoon, H.-K., & Park, C.-M.
- Venue
- The Plant Cell
- Publisher
- Oxford University Press (OUP)
- Published
- 2011-06-01
- Volume
- 23
- Issue
- 6
- Pages
- 2155-2168
- ISSN
- 1040-4651 (ISSN-L)
- 1532-298X
- OpenAlex
- W2109720086
- Cited by
- 399
- References
- 0
- FWCI
- 30.51
- Type
- journal article
- Language
- en
- Open access
- green
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- Yang, S.-D., Seo, P. J., Yoon, H.-K., & Park, C.-M. (2011). The Arabidopsis NAC Transcription Factor VNI2 Integrates Abscisic Acid Signals into Leaf Senescence via the COR/RD Genes. The Plant Cell. https://doi.org/10.1105/tpc.111.084913
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