MdbHLH162 connects the gibberellin and jasmonic acid signals to regulate anthocyanin biosynthesis in apple

Journal of Integrative Plant Biology, Journal Year: 2024, Volume and Issue: 66(2), P. 265 - 284

Published: Jan. 29, 2024

Anthocyanins are secondary metabolites induced by environmental stimuli and developmental signals. The positive regulators of anthocyanin biosynthesis have been reported, whereas the repressors neglected. Although signal transduction pathways gibberellin (GA) jasmonic acid (JA) their regulation investigated, cross-talk between GA JA antagonistic mechanism regulating remain to be investigated. In this study, we identified repressor MdbHLH162 in apple revealed its molecular integrating exerted passive repression interacting with MdbHLH3 MdbHLH33, which two recognized biosynthesis. negatively regulated disrupting formation anthocyanin-activated MdMYB1-MdbHLH3/33 complexes weakening transcriptional activation biosynthetic genes MdDFR MdUF3GT MdbHLH33. MdRGL2a antagonized MdbHLH162-mediated inhibition anthocyanins sequestering from MdbHLH162-MdbHLH3/33 complex. MdJAZ1 MdJAZ2 interfered titrating MdRGL2a-MdbHLH162 Our findings reveal that integrates signals regulate This study provides new information for discovering more explores hormone

Language: Английский

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Natural Pigments or Dyes for Sustainable Food Packaging Application

Food and Bioprocess Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Language: Английский

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Coordination among flower pigments, scents and pollinators in ornamental plants

Horticulture Advances, Journal Year: 2024, Volume and Issue: 2(1)

Published: Feb. 6, 2024

Abstract Flower color and scent, crucial qualitative characteristics of ornamental plants, display extensive variation. These distinct pigments scents play a key role in attracting specific pollinators. While previous research primarily delved into the synthetic regulatory mechanisms individual traits their respective attraction to insects, recent studies unveil an interconnectedness between flower scent through transcriptional networks. Moreover, evidence suggests that both actively contribute insect attraction. This review summarizes co-regulation synthesis scents, highlighting pivotal roles pollinator The insights provided will serve as valuable references for applications metabolic engineering, novel variety breeding, pest detection management.

Language: Английский

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Deciphering the spectra of flowers to map landscape‐scale blooming dynamics

Ecosphere, Journal Year: 2025, Volume and Issue: 16(2)

Published: Feb. 1, 2025

Abstract Like leaves, floral coloration is driven by inherent optical properties, which are determined pigments, scattering structure, and thickness. However, establishing the relative contribution of these factors to canopy spectral signals usually limited in situ observations. Modeling flowering dynamics (e.g., blooming duration, spatial distribution) at landscape scale may reveal insights into ecological processes phenological adaptations environmental changes. Multi‐temporal visible shortwave infrared (VSWIR) imaging spectroscopy observations especially suited for such efforts. Reflectance this range sensitive major flower phenology traces, biophysical differences between flowers other plant parts. We explored how contribute using a time series imagery from Airborne Visible InfraRed Imaging Spectrometer‐Next Generation (AVIRIS‐NG) collected as part Surface Biology Geology (SBG) High‐Frequency Time Series (SHIFT) campaign case study. data were weekly during spring 2022 across two natural reserves California. Field spectra gathered plots leaf, flower, levels points campaign. The processed used investigate species' spectro‐temporal variation distribution mixture residual (SMR), Gaussian clustering techniques, proposed narrow‐band index. Linear unmixing allowed computation weighted four high‐variance endmembers (leaves, flowers, soil, dark) low‐variance signal that comprises subtle features track processes. reflectance was projected on low principal component basis characterize clusters' based model, providing an uncertainty metric assess results. Mapping events modeling throughout season, pre‐blooming post‐flowering stages, us identify gradient variations within VSWIR linked pigments. Mixture Residual Blooming Index Red‐Edge Normalized Difference Vegetation revealed specific greenness phenophases main species ( Coreopsis gigantea , Artemisia californica ) areas. Overall, our approach opens opportunities future satellite monitoring cycles broader scales.

Language: Английский

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Rethinking convergence in plant parasitism through the lens of molecular and population genetic processes

American Journal of Botany, Journal Year: 2023, Volume and Issue: 110(5)

Published: May 1, 2023

Abstract The autotrophic lifestyle of photosynthetic plants has profoundly shaped their body plan, physiology, and gene repertoire. Shifts to parasitism heterotrophy have evolved at least 12 times in more than 4000 species, this transition consequently left major evolutionary footprints among these parasitic lineages. Features that are otherwise rare the molecular level beyond repetitively, including reduced vegetative bodies, carrion‐mimicking during reproduction, incorporation alien genetic material. Here, I propose an integrated conceptual model, referred as funnel define general trajectory provide a mechanistic explanation for convergent evolution. This model connects our empirical understanding regulatory networks flowering with classical theories population genetics. It emphasizes cascading effects brought about by loss photosynthesis may be force constraining physiological capacity shaping genomic landscapes. Here review recent studies on anatomy, genetics lend support photosynthesis‐centered model. Focusing nonphotosynthetic holoparasites, elucidate how they inevitably reach terminal status (i.e., extinction) highlight utility general, explicitly described falsifiable future plants.

Language: Английский

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Pollination strategies are exceptionally complex in southwestern Australia – a globally significant ancient biodiversity hotspot

Australian Journal of Botany, Journal Year: 2024, Volume and Issue: 72(2)

Published: Jan. 1, 2024

Context The Southwest Australian Floristic Region has exceptional plant evolutionary complexity for fire, nutrition and pollination traits.Aims Our aim was to allocate strategies all vascular plants in this biodiversity hotspot by analysing existing new data.Methods Here we assigned a flower syndrome ~8800 region, using floral traits visitation records insects, birds or mammals, which were well correlated.Key results Specific insect relationships most common (3383), especially with native bees (2410), including buzz (450). Others pollinated wind (1054 plants), water (35) had relatively unspecialised flowers visited diverse insects (3026). associations flies (588) butterflies moths (165) less common. Approximately 14% primarily (601) (583) – much larger (corresponding bird bill lengths), insect-attracting colours (e.g. red green). Non-flying honey possums, visit certain along birds. Pollination peaked the Myrtaceae (11% bird, 25% insect), Fabaceae (2% 46% bee, 2% pollination) Proteaceae (40% birds, 31% specific insects). Bird also multiple origins Ericaceae (8%), Haemodoraceae (20%), Rutaceae (16%), Pittosporaceae (14%) Eremophila (45%). Extreme specialisations included secondary pollen presentation (1231), post-pollination colour change (72), mobile columns (310), explosive release (137) visual (209) sexual (171) deception orchids. trait >275 transitions, from (130), more (100), (15). These followed similar morphological pathways within families but differed between them.Conclusions This appears be globally unique, peaks highly speciose diversity centred region.Implications ecological genetic consequences, rare flora management, ecosystem restoration assessing vulnerability habitat degradation, fire climate change.

Language: Английский

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Genome assembly, resequencing and genome‐wide association analyses provide novel insights into the origin, evolution and flower colour variations of flowering cherry

The Plant Journal, Journal Year: 2023, Volume and Issue: 114(3), P. 519 - 533

Published: Feb. 14, 2023

Flowering cherry is a very popular species around the world. High-quality genome resources for different elite cultivars are needed, and understanding of their origins regulation key ornamental traits limited this tree. Here, high-quality chromosome-scale Prunus campanulata 'Plena' (PCP), which native flowering cultivar in China, was generated. The contig N50 18.31 Mb, 99.98% its contigs were anchored to eight chromosomes. Furthermore, total 306 accessions germplasm six lines outgroups collected. Resequencing these 312 performed, 761 267 genomic variants obtained. predicted, could be classified into three clades, A, B C. According phylogenetic analysis, we predicted two cherry. clade A originated southern such as Himalayan Mountains, while clades C northeastern China. Finally, genome-wide association study flower colour performed all germplasm. seven quantitative trait loci (QTLs) identified. One gene encoding glycosylate transferase candidate one QTL. Taken together, our results provide valuable resource novel insights origin, evolution variations

Language: Английский

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The evolution of flower colour

Current Biology, Journal Year: 2023, Volume and Issue: 33(11), P. R484 - R488

Published: June 1, 2023

Language: Английский

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Analysis of Physiological and Biochemical Factors Affecting Flower Color of Herbaceous Peony in Different Flowering Periods

Horticulturae, Journal Year: 2023, Volume and Issue: 9(4), P. 502 - 502

Published: April 18, 2023

Herbaceous peony (Paeonia lactiflora Pall.) is a famous ornamental plant, and the study of its flower color great significance for cultivating new varieties. To explore factors driving formation change herbaceous color, we selected five varieties at four flowering stages to determine in petal area, microstructure. We also examined composition content pigments, soluble sugar protein content, pH value cell fluid, water content. Finally, analyzed correlations between each factor. found that Pn3G5G, Pg3G5G, Cy3G5G were main anthocyanin components red purple petals. Qu3G, Qu7G, Is3G, lutein play important roles yellow formation. The during process directly caused by changes carotenoid In addition, other physiological indices influence color. This explored biochemical affecting petals, which has an practical studying mechanism breeding flowers.

Language: Английский

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Antibacterial and Antifungal Properties of New Synthetic Tricyclic Flavonoids

Antibiotics, Journal Year: 2025, Volume and Issue: 14(3), P. 307 - 307

Published: March 16, 2025

Background/Objectives: The discovery of new molecules to which bacteria have not yet developed resistance is a significant medical priority. Synthetic flavonoids are good candidates for developing antimicrobials. Our study investigates series newly synthesized tricyclic with several different substituents on the flavonoid core. Methods: By varying nature rings A and B, structure–activity relationship using microbial strains has been performed. antibacterial antifungal properties these compounds investigated against Gram-positive Gram-negative Candida strains. Results: All seven tested found exhibit highest antimicrobial activity S. aureus, an inhibition zone up 23 mm. 5c, 5e, 5f showed C. parapsilosis, around 17 Conclusions: data support idea that 5 reliable effective agents.

Language: Английский

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