SlTDC1 Overexpression Promoted Photosynthesis in Tomato under Chilling Stress by Improving CO₂ Assimilation and Alleviating Photoinhibition.

ABSTRACT: Chilling causes a significant decline in photosynthesis in tomato plants. Tomato tryptophan decarboxylase gene 1 (SlTDC1) is the first rate-limiting gene for melatonin (MT) biosynthesis and is involved in the regulation of photosynthesis under various abiotic stresses. However, it is not clear whether SlTDC1 participates in the photosynthesis of tomato under chilling stress. Here, we obtained SlTDC1 overexpression transgenic tomato seedlings, which showed higher SlTDC1 mRNA abundance and MT content compared with the wild type (WT). The results showed that the overexpression of SlTDC1 obviously alleviated the chilling damage to seedlings in terms of the lower electrolyte leakage rate and hydrogen peroxide content, compared with the WT after 2 d of chilling

SUBMITTER: Liu X 

PROVIDER: S-EPMC10341946 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature