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| Content Provider | MDPI |
|---|---|
| Author | Xu, Yangyang Wu, Hanying Zhao, Mingming Wu, Wang Xu, Yinong Gu, Dan |
| Abstract | SHINE (SHN/WIN) clade proteins, transcription factors of the plant-specific APETALA 2/ethylene-responsive element binding factor (AP2/ERF) family, have been proven to be involved in wax and cutin biosynthesis. Glycine max is an important economic crop, but its molecular mechanism of wax biosynthesis is rarely characterized. In this study, 10 homologs of Arabidopsis SHN genes were identified from soybean. These homologs were different in gene structures and organ expression patterns. Constitutive expression of each of the soybean SHN genes in Arabidopsis led to different leaf phenotypes, as well as different levels of glossiness on leaf surfaces. Overexpression of GmSHN1 and GmSHN9 in Arabidopsis exhibited 7.8-fold and 9.9-fold up-regulation of leaf cuticle wax productions, respectively. C31 and C29 alkanes contributed most to the increased wax contents. Total cutin contents of leaves were increased 11.4-fold in GmSHN1 overexpressors and 5.7-fold in GmSHN9 overexpressors, mainly through increasing C16:0 di-OH and dioic acids. GmSHN1 and GmSHN9 also altered leaf cuticle membrane ultrastructure and increased water loss rate in transgenic Arabidopsis plants. Transcript levels of many wax and cutin biosynthesis and leaf development related genes were altered in GmSHN1 and GmSHN9 overexpressors. Overall, these results suggest that GmSHN1 and GmSHN9 may differentially regulate the leaf development process as well as wax and cutin biosynthesis. |
| File Size | 11454464 |
| File Format | |
| e-ISSN | 14220067 |
| DOI | 10.3390/ijms17040587 |
| Journal | International Journal of Molecular Sciences |
| Issue Number | 4 |
| Volume Number | 17 |
| Language | English |
| Publisher Date | 2016-04-21 |
| Access Restriction | Open |
| Subject Keyword | wax cutin SHN/WIN AP2/ERF soybean overexpression transcription factor leaf development |
| Content Type | Text |
| Resource Type | Article |
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