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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhou, Binhui Fang, Yongjun Fan, Yujie Wang, Ying Qi, Jiyan Tang, Chaorong |
| Copyright Year | 2017 |
| Abstract | In plants, trehalose-6-phosphate (Tre6P) synthesized by the Tre6P synthase (TPS) acts as a signal metabolite in regulating sucrose metabolism in relation to plant growth and development. The Hevea genome predicts a total of 14 TPS genes, and two class I TPS members, HbTPS1 and 2, were explored here for their expressions under various hormone and abiotic stress treatments. HbTPS1 and 2 expressions in latex, cytoplasm of rubber-producing laticifers, were markedly affected by the treatments of ethephon (2-chloroethylphosphonic acid, an ethylene releaser), 2,4-dichlorophenoxyacetic acid, jasmonic acid and salicylic acid although in a distinct manner. HbTPS1 and 2 expressions were significantly up-regulated in a similar manner by cold (5 °C) and heat (40 °C) as examined in Hevea seedling leaves and roots, and by wounding in latex. In comparison, the drought treatment (20% PEG) posed a different effect on HbTPS1 and 2 expressions in Hevea seedlings. For example, in roots, HbTPS1 transcripts accumulated with the treatment, whereas those of HbTPS2 decreased for the first 24 h. Various hormone- and stress-responsive elements could be in silico predicted in HbTPS1 and 2 promoters, and a universal expression was observed for the HbTPS1::GUS activity in all growth stages of transgenic Arabidopsis. These results, coupled with the fact of rubber biosynthesis as a defense response using sucrose as the precursor molecule, propose a potential role of TPS genes in regulating rubber production. |
| Starting Page | 513 |
| Ending Page | 526 |
| Page Count | 14 |
| File Format | |
| ISSN | 01694286 |
| Journal | New Forests |
| Volume Number | 48 |
| Issue Number | 4 |
| e-ISSN | 15735095 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2017-03-07 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Hevea brasiliensis Trehalose-6-phosphate synthase Gene expression Hormone Abiotic stress Rubber production Forestry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Forestry |
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