The very long chain fatty acids (VLCFAs) are synthesized by the microsomal fatty acid elongation system in plants. We investigated cellular function of NbECR putatively encoding enoyl-CoA reductase that catalyzes the last step of VLCFA elongation in Nicotiana benthamiana. Virus-induced gene silencing of NbECR produced necrotic lesions with typical cell death symptoms in leaves. In the affected tissues, ablation of the epidermal cell layer preceded disintegration of the whole leaf cell layers, and disorganized cellular membrane structure was evident. The amount of VLCFAs was reduced in the NbECR VIGS lines, suggesting NbECR function in elongation of VLCFAs. The results demonstrate that NbECR encodes a putative enoyl-CoA reductase and that the NbECR activity is essential for membrane biogenesis in N. benthamiana.
Bibliographical noteFunding Information:
This research was supported by grants from the Plant Diversity Research Center of the 21st Century Frontier Research Program (to H.-S. Pai and W.T. Kim), the Molecular and Cellular BioDiscovery Research Program (to H.-S. Pai), and the Plant Metabolism Research Center (at Kyung Hee University) of the Science Research Center Program (to W.T. Kim), all of which are funded by the Ministry of Science and Technology of the Korean government.
All Science Journal Classification (ASJC) codes
- Structural Biology
- Molecular Biology
- Cell Biology