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- Title
Differences in Selenium Uptake, Distribution and Expression of Selenium Metabolism Genes in Tomatoes.
- Authors
Wanyi Zhao; Weihong Xu; Yourong Chai; Xinbin Zhou; Mingzhong Zhang; Wenwen Xie
- Abstract
Effects of different levels of selenium (0, 5 and 10 mg·kg-1) on selenium uptake, distribution, and the expression levels of Se metabolism genes were compared with three tomato (Solanum lycopersicum L.) varieties (KT30, Defumm-8 and Luobeiqi). The results showed that Se inhibited the expression levels of APS reductase in varieties of KT30 and Luobeiqi; however, there was no significant difference in variety Defumm-8. Selenium also promoted expression levels of ATP sulfurylase of the tomato varieties. The expression levels of cysteine desulfurase of variety KT30 and variety Defumm-8 first decreased and then increased with the increasing Se concentration; however, expression levels of Se were lower than the control, and expression levels of Se in leaves of variety Luobeiqi increased. The Se concentration markedly decreased the expression levels of Sadenosyl- l-Met:l-Met S-methyltransferase in the three varieties, except variety Defumm-8 with Se at 5 mg·kg-1. Furthermore, the Se concentration markedly decreased expression levels of serine acetyltransferase of variety KT30 and variety Defumm-8, but expression levels of leaves of variety Luobeiqi increased. Expression levels of serine acetyltransferase in variety Luobeiqi increased with the increasing Se concentration but decreased in KT30 and Defumm-8. Expression levels of SeCys methyltransferase (SMT) in Luobeiqi and KT30 were reduced by Se, while promoted in Defumm-8. The Se treatment promoted expression levels of APS in three tomato varieties.
- Subjects
SELENIUM; METABOLISM; TOMATO genetics; CYSTEINE desulfurase; METHYLTRANSFERASES
- Publication
International Journal of Agriculture & Biology, 2017, Vol 19, Issue 3, p528
- ISSN
1560-8530
- Publication type
Article
- DOI
10.17957/IJAB/15.0330