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2025-06-17
This study investigates the role of CmCYC1a, a CYC1 subclade gene from the ECE (CYC/TB1) family, in the floral development of Chrysanthemum morifolium. The gene was found to be more highly expressed in disc florets than in ray florets, with expression increasing during the flowering process. Functional analysis through overexpression in Arabidopsis thaliana revealed that CmCYC1a can alter floral symmetry from actinomorphic to zygomorphic and reduce the number of stamens. Additionally, yeast two-hybrid assays showed that CmCYC1a interacts with CmCYC2b, CmCYC2d, and CmCYC2f. These findings suggest that CmCYC1a contributes to the regulation of flower symmetry and stamen development in Chrysanthemum morifolium, and, together with CYC2 genes, may play a coordinated role in capitulum formation, providing new insights into the function of ECE genes in Asteraceae.
2025-06-12
This study investigates the role of MOF1 in male meiosis in rice. Two MOF1 mutant lines in the Nipponbare background showed reduced seed setting and pollen fertility due to impaired male meiotic bivalent formation. RNA-seq and RT-qPCR revealed that MOF1 does not affect the expression of known meiotic genes, suggesting it may not act as a transcription factor in meiosis.
2025-06-10
This study investigates the roles of two TGA transcription factors, PpTGA2.1-L and PpTGA7-L, in the regulation of sand pear fruit senescence through the salicylic acid (SA) signaling pathway. Fourteen TGA genes were identified in sand pear, and phylogenetic analysis grouped them into five subfamilies.
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.
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