ArticleBMC plant biology2026
Glycine betaine alleviates salt stress in tomato by enhancing the chlorophyll synthesis pathway, photosynthesis, and regulating m
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundGlycine betaine (GB) not only plays an important role as an osmotic regulator in the regulation of abiotic stress in plants, but also serves as a methyl donor that affects the methylation level of the plant, which in turn affects its growth, development and response to adversity. Tomato as a major crop cultivated in facilities, facility soil salinization has become an important factor limiting efficient and high qualities tomato production. In contrast, little has been reported on the effect of GB on m
resultsThe results showed that 5 mM GB pretreatment alleviated the inhibitory effect of salt stress on the growth of tomato plants. GB promotes the synthesis and accumulation of Proto IX, Mg-Proto IX and protochlorophyllide in the chlorophyll synthesis pathway under salt stress by protecting the activities of CHLH (Magnesium-binding enzyme H subunit) and POR (protochlorophyllide oxidoreductase) thereby increasing the chlorophyll content. In addition, GB improves photosynthetic capacity of tomato by increasing stomatal opening and protecting Calvin cycle enzyme activity. And GB altered the expression level of m
conclusionsIn summary, GB may enhance tomato salt tolerance by promoting chlorophyll synthesis, enhancing photosynthesis, and regulating the expression levels of m
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