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2025-06-06
Literature Sharing | SPL1 positively regulates cuticular ridge wax biosynthesis in Arabidopsis
This study investigates the molecular mechanisms underlying the formation and maintenance of cuticular ridge structures, which are characteristic of the sepals and petals in various plant species.
2025-06-04
Functional study of plant hormone transporters using a heterologous system
Plant hormones are key signaling molecules that regulate plant growth, development, morphogenesis, and responses to environmental stresses. These hormones are often synthesized in specific tissues and transported via the vascular system to other organs where they exert their functions. In some cases, plant hormones are synthesized intracellularly and subsequently transported to neighboring cells.
2025-05-29
Salt stress significantly hinders maize growth and yield. This study explored the role of exogenous 5-aminolevulinic acid (ALA) in regulating photosynthesis in maize seedlings under salt stress. Transcriptome and physiological analyses of the “Zhengdan 958” cultivar revealed 4634 differentially expressed genes, including key transcription factors (NAC, MYB, WRKY). These genes were enriched in pathways related to porphyrin metabolism, photosynthesis, and carbon fixation. ALA treatment enhanced photosynthetic gene expression, pigment levels, antioxidant enzyme activities (SOD and CAT), reduced ROS accumulation, and increased starch content. Overall, ALA improves maize salt tolerance by modulating photosynthesis-related pathways.
2025-05-27
This study aimed to investigate the potential role of alpha-tocopherol (α-Toc), a form of vitamin E, in improving morphological, physiological, biochemical, and cellular antioxidant responses in two radish genotypes under drought stress (38 ± 3% field capacity). Four treatments were applied: T0 (Control), T1 (Control + α-Toc), T2 (Drought), and T3 (Drought + α-Toc), with three replications. Drought stress significantly reduced growth traits such as root length, shoot fresh weight, and shoot dry weight. However, the application of α-Toc (alone or in combination with drought) significantly improved these growth parameters. Drought also increased hydrogen peroxide and lipid peroxidation levels, but α-Toc application mitigated oxidative damage by enhancing antioxidant enzymes (CAT and POX), reducing lipid peroxidation, and increasing osmolytes like total soluble proteins to maintain osmotic balance.
2025-05-22
This study reveals that flower color fading in lilac (Syringa oblata) is caused by decreased anthocyanin accumulation during flower development. The enzyme SoUFGT1, essential for stabilizing anthocyanins, is regulated by three transcription factors: SoMYB44, SobHLH130, and SoNAC72. SoMYB44 activates SoUFGT1 expression, while SoNAC72 promotes SoMYB44 by binding to its promoter. SobHLH130 interacts with SoMYB44 to enhance its regulatory effect. As flowers age, reduced expression of SoNAC72 and SobHLH130 lowers SoMYB44 levels, suppressing SoUFGT1 expression and anthocyanin biosynthesis, leading to flower color fading.
2025-05-20
This study reveals that both phytochrome A (phyA) and phytochrome B (phyB) interact with PHYTOCHROME-INTERACTING FACTORs (PIFs) through the APA (active phyA-binding) motif via the C-terminal output module (phyOPM), rather than the previously assumed N-terminal photosensory module (phyPSM). While phyB also binds the APB (active phyB-binding) motif via its N-terminal phyBPSM, the APA motif interaction is common to both phyA and phyB through phyOPM.
2025-05-16
This study revealed that the transcription factor ZmGBF1 plays a positive role in maize heat stress (HS) tolerance. Through transcriptome analysis, DNA affinity purification sequencing, yeast one-hybrid, and dual-luciferase assays, ZmGBF1 was shown to directly bind to the promoter of ZmCXE2 and enhance its expression, thereby promoting the HS response. Both ZmGBF1 and ZmCXE2 were upregulated by gibberellin (GA), suggesting hormonal involvement in this regulatory pathway. The findings propose an improved model in which ZmGBF1 enhances maize heat tolerance by activating ZmCXE2, helping to balance growth and environmental stress responses.
2025-05-13
This study investigates the regulatory mechanisms of fig fruit textural changes during ripening. It focuses on the transcription factor FcERF100, which plays a key role in repressing fruit softening. FcERF100 transcription is rapidly suppressed during fig fruit ripening, and its overexpression delays softening by decreasing the expression of the cell wall-modifying gene FcPL7. Through various assays (Y1H, ChIP-qPCR, EMSA, and dual-luciferase), it was shown that FcERF100 represses FcPL7 by binding directly to its promoter via specific elements (GCC-box and DRE/CRT).
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