E-resources
-
Sameeullah, Muhammad; Yildirim, Muhammet; Aslam, Noreen; Baloğlu, Mehmet Cengiz; Yucesan, Buhara; Lössl, Andreas G; Saba, Kiran; Waheed, Mohammad Tahir; Gurel, Ekrem
International journal of molecular sciences, 10/2021, Volume: 22, Issue: 21Journal Article
The short-chain dehydrogenase/reductase (SDR) gene family is widely distributed in all kingdoms of life. The genes, 3β-hydroxysteroid dehydrogenase ( ) and progesterone 5-β-reductases ( , ) play a crucial role in cardenolide biosynthesis pathway in the species. However, their role in plant stress, especially in salinity stress management, remains unexplored. In the present study, transplastomic tobacco plants were developed by inserting the , and genes. The integration of transgenes in plastomes, copy number and transgene expression at transcript and protein level in transplastomic plants were confirmed by PCR, end-to-end PCR, qRT-PCR and Western blot analysis, respectively. Subcellular localization analysis showed that 3β-HSD and P5βR1 are cytoplasmic, and P5βR2 is tonoplast-localized. Transplastomic lines showed enhanced growth in terms of biomass and chlorophyll content compared to wild type (WT) under 300 mM salt stress. Under salt stress, transplastomic lines remained greener without negative impact on shoot or root growth compared to the WT. The salt-tolerant transplastomic lines exhibited enhanced levels of a series of metabolites (sucrose, glutamate, glutamine and proline) under control and NaCl stress. Furthermore, a lower Na /K ratio in transplastomic lines was also observed. The salt tolerance, mediated by plastidial expression of the , and genes, could be due to the involvement in the upregulation of nitrogen assimilation, osmolytes as well as lower Na /K ratio. Taken together, the plastid-based expression of the genes leading to enhanced salt tolerance, which opens a window for developing saline-tolerant plants via plastid genetic engineering.
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.