Impact of Temperature on Growth, Photosynthetic Efficiency, Yield, and Functional Components of Bud-Leaves and Flowers in Edible Chrysanthemum (Chrysanthemum morifolium Ramat)

Horticulturae, Journal Year: 2025, Volume and Issue: 11(5), P. 448 - 448

Published: April 22, 2025

Edible chrysanthemum (Chrysanthemum morifolium Ramat.), widely consumed in Asia, is rich bioactive compounds such as polyphenols, flavonoids, and amino acids. Optimizing cultivation temperature critical for maximizing both yield quality, especially under the challenges posed by climate change. This study evaluated growth performance, photosynthetic characteristics, metabolite accumulation of ‘Taiwan Hangju No. 1’ variety five day/night regimes (15/13 °C, 20/15 25/20 30/25 35/30 °C) over a 220-day period an artificial greenhouse. The °C regime promoted best overall growth, with highest yields bud-leaves flowers, supported net rate, indicating optimal carbon assimilation moderate temperatures. In contrast, stomatal conductance, respiration transpiration rate increased temperature, peaking at °C. Water use efficiency was greatest 15/13 Bioactive compound exhibited complex organ-specific responses to temperature. concentration luteolin, caffeoylquinic acid derivatives (CQAs) free acids decreased rising reaching peak flavonoid peaked accumulated most flavonoids differing flowers various conditions contributed variation total content functional compounds. Except acids, other all demonstrated that provides balance between efficiency, key therefore recommended 1’. These findings reveal temperature-dependent metabolic adjustments, suggesting warming may enhance crop quality if managed carefully. results provide scientific basis climate-adaptive strategies edible chrysanthemums subtropical regions.

Language: Английский

Transcriptomic Profiling of Heat-Treated Oriental Lily Reveals LhERF109 as a Positive Regulator of Anthocyanin Accumulation

Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1071 - 1071

Published: April 28, 2025

Pink-flowered Oriental lily cultivars exhibit significant color fading under high temperatures, but the underlying regulatory mechanisms remain unclear. We subjected ‘Souvenir’ plants to temperature treatments (20 °C and 35 °C) performed transcriptome sequencing weighted gene co-expression network analysis (WGCNA). The (35 significantly reduced anthocyanin content in tepals. identified 8354 differentially expressed genes, with GO KEGG analyses revealing a dynamic transition from early stress responses metabolic adaptation. WGCNA revealed module strongly correlated content, which we constructed using known anthocyanin-related including key transcription factor LhMYB12 structural genes involved biosynthetic pathway (LhANS, LhDFR, LhUGT78, LhF3′H). Through this comprehensive analysis, successfully screened LhERF109 as promising candidate. transient overexpression of was found enhance accumulation upregulate LhMYB12, while silencing expression produced opposite effects. These findings identify positive regulator biosynthesis providing new targets for breeding heat-tolerant lilies stable flower coloration.

Language: Английский

Anthocyanin Degradation Drives Heat-Induced Petal Fading in Chrysanthemum morifolium at Full Bloom: A Multi-Omics Analysis

Agriculture, Journal Year: 2025, Volume and Issue: 15(9), P. 950 - 950

Published: April 27, 2025

Chrysanthemum morifolium, a major cut flower worldwide, undergoes petal fading under heat stress due to reduced anthocyanin accumulation, significantly compromising its ornamental value. While previous studies have focused on heat-induced inhibition of biosynthesis, the mechanisms governing degradation remain unclear. In this study, ‘Nannong Fencui’ chrysanthemums at full bloom—when accumulation peaks—were exposed 35 °C, while control group was maintained 22 assess effects metabolism, including both biosynthesis and degradation. Transcriptomic analysis identified nine core structural genes three key transcription factors involved in along with twelve linked enzymatic Notably, FPKM values for were extremely low groups, indicating that largely inactive bloom. Untargeted metabolomic 30 most enriched metabolic pathways. Compared control, treatment led significant increase 93 metabolites (FC > 1.5, p < 0.05, VIP 1) decrease 160 1/1.5, 1). Cyanidin glucoside, primary chrysanthemum petals, decreased treatment, potential product, protocatechuic acid, undetectable. Meanwhile, 5-carboxyvanillic acid levels increased heat-treated suggesting may been converted into via an O-methylation pathway. These findings provide new insights regulation anthocyanins offer strategies maintaining color quality during summer production, highlighting candidate (CmPRXs CmOMT1) future functional validation breeding efforts aimed improving tolerance stability.

Language: Английский