Small molecules and ions: Minor yet vital in plants

Journal of Plant Physiology, Journal Year: 2025, Volume and Issue: 306, P. 154451 - 154451

Published: Feb. 8, 2025

Language: Английский

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Evaluation of the molecular mechanism underlying proline metabolic and catabolic pathways and some morpho-physiological traits of tobacco (Nicotiana tabacum L.) plants under arsenic stress

BMC Plant Biology, Journal Year: 2025, Volume and Issue: 25(1)

Published: Feb. 25, 2025

In recent decades, arsenic (As) toxicity has emerged as a significant challenge in many countries. It not only reduces the growth and performance of plants, but also poses threat to human health. The synthesis compatible solutes, particularly proline, is mechanism plants utilize cope with stress. Investigating metabolic pathways proline would deepen our understanding for future molecular breeding or genetic engineering efforts. Therefore, aim this study was explore catabolic well morpho-physiological traits tobacco, under As results revealed decrease morphological photosynthetic efficiency, chlorophyll content, total soluble protein content increasing concentration. showed that carbohydrates, hydrogen peroxide, malondialdehyde, activity two antioxidant enzymes, superoxide dismutase ascorbate peroxidase, increased At 10 mg Kg−1 soil, expression Δ1-pyrroline-carboxylate synthetase (P5CS) P5C reductase (P5CR) genes different from control, their significantly at 20 40 soil. dehydrogenase (PDH) (P5CDH) decreased sharply compared control remained unchanged ornithine δ-aminotransferase (OAT) gene it sharply. accumulation lowest (10 soil) tested concentration due (PDH P5CDH), while involved did play role. caused by (P5CS P5CR) glutamate pathway synthesis. Additionally, highest (40 soil), OAT gene, which active pathway, synthesis, along P5CS P5CR genes.

Language: Английский

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L-Cysteine Treatment Delays Leaf Senescence in Chinese Flowering Cabbage by Regulating ROS Metabolism and Stimulating Endogenous H2S Production

Foods, Journal Year: 2024, Volume and Issue: 14(1), P. 29 - 29

Published: Dec. 25, 2024

Leaf senescence is a major concern for postharvest leafy vegetables, as leaves are highly prone to yellowing and nutrient loss, resulting in reduced commercial value limited shelf-life. This study aimed investigate the effect of L-cysteine (L-cys) on Chinese flowering cabbage stored at 20 °C. The results showed that 0.5 g L−1 L-cys treatment effectively slowed leaf by downregulating chlorophyll degradation genes (BrNYC1, BrNOL, BrPPH, BrPAO, BrNYE, BrSAGs) marker gene BrSAG12. Moreover, this exhibited positive influence nutritional quality cabbage. Also, maintained ROS homeostasis, preventing excessive accumulation lipid membrane oxidation. also higher total antioxidant capacity scavenging rate •OH O2•−. Additionally, high levels ascorbate glutathione activated enzymes (superoxide dismutase, peroxidase, catalase) expression encoding genes. Furthermore, elevated endogenous H2S levels, which correlated with increased desulfhydrase activity upregulation biosynthesis-related These findings suggest can delay reducing breakdown, maintaining stimulating production.

Language: Английский

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Alfalfa MsGAD2 induces γ-aminobutyric acid accumulation and enhances Cd resistance in transgenic tobacco

Environmental and Experimental Botany, Journal Year: 2024, Volume and Issue: 229, P. 106058 - 106058

Published: Dec. 3, 2024

Language: Английский

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