Projecting the global potential distribution of nine Rhododendron Subgenus Hymenanthes species under different climate change scenarios

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 27, 2025

As one of China's most treasured traditional flowers, Rhododendron Subgen. Hymenanthes is renowned worldwide for its evergreen foliage, vibrant and significant ornamental, landscaping, economic value. However, climate change poses a serious threat to future, leading population declines endangerment some species. Despite the ecological importance Hymenanthes, future distribution suitable habitats effective strategies conservation utilization remain unclear. This study employs MaxEnt model, which well-known reliability in predicting species under changing environmental conditions, predict potential global nine Hymenanthes. The goal provide solid foundation their conservation, cultivation management, breeding. results indicate that, scenarios, habitat areas four (R. irroratum, R. agastum, decorum, arboreum) will significantly decrease, while remaining five delavayi, fortunei, calophytum, simiarum, wardii) experience slight expansion. Temperature precipitation are identified as key factors influencing growth these species, affecting ability colonize new regions. migration direction expanding regions all consistent, with centroids shifting towards northwest. These findings critical insights developing targeted strategies, including identifying refugia prioritizing conditions.

Language: Английский

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The variation of summer heat resistance was associated with leaf transpiration rate in relatively large-leaf Rhododendron plants in southwest China

Journal of Plant Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 8, 2025

Language: Английский

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Adaptive Defense Mechanism During Flowering Period of Rhododendron decorum Revealed by Comparative Transcriptomic Analysis

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 559 - 559

Published: Feb. 12, 2025

Rhododendron decorum, a widely distributed species in southwestern China, is recognized not only for its significant ornamental value but also as culinary resource local tribes. However, the defense mechanisms underlying ecological adaptations of R. decorum remain to be elucidated. In this study, we conducted comparative transcriptomic analyses various organs (corolla, androecium/gynoecium and leaves) collected from two distinct regions. Approximately 186.98 Gb clean data were generated three across these Through de novo assembly, total 92,025 unigenes obtained nearly half them (43,515 unigenes) successfully annotated. Enrichment analysis differentially expressed genes (DEGs) within groups different (HQI/LFI, HQO/LFO HQL/LFL, respectively) revealed that distribution Heqing region exhibited an increased requirement plant immunity, including resistance diseases, insects, herbivores organs. Conversely, Lijiang showed greater reliance on environmental factors, such cold tolerance, aromatic compounds production, attraction pollinating insects. Notably, validation 21 pivotal identified significantly regulated enrichment pathways functional consistency KEGG among The disparities observed transcriptome regions provide valuable insight into understanding adaptive mechanism.

Language: Английский

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Identification of bHLH Family Genes in Rhododendron hainanense Merr. and Verification of Their Role in Heat Tolerance

Forests, Journal Year: 2025, Volume and Issue: 16(3), P. 416 - 416

Published: Feb. 25, 2025

Rhododendron hainanense Merr. is a tropical flowering shrub with high ornamental and medicinal value, but temperatures are limiting factor for its landscape application. The bHLH transcription family regulates plant growth development crucial responses to various stresses; however, mechanism regulating high-temperature stress remains unclear. This study conducted whole-genome analysis of R. hainanense, identifying 117 RhbHLH members complete domains, unevenly distributed across 12 chromosomes. Using Arabidopsis thaliana (L.) Heynh. as reference, the genes were systematically categorized into 21 subfamilies. Conserved sequence showed that motifs 1 2 form characteristic domain, while 3–6 exhibit significant conservation. Analysis gene duplication events indicated has eight pairs segmental duplications, suggesting their role in potential adaptive evolution. Transcriptomic studies revealed such RhbHLH107 RhbHLH49 highly expressed response temperatures, involvement heat stress. Furthermore, strong correlation common metabolites like flavonoids jasmonic acid under indicating these may participate mediate responses. lays foundation further research on tolerance provides basis future applications breeding horticulture.

Language: Английский

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Research Progress on Heat Stress Response Mechanism and Control Measures in Medicinal Plants

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(16), P. 8600 - 8600

Published: Aug. 7, 2024

Medicinal plants play a pivotal role in traditional medicine and modern pharmacology due to their various bioactive compounds. However, heat stress caused by climate change will seriously affect the survival quality of medicinal plants. In this review, we update our understanding research progress on plants' response mechanisms control measures under over last decade. This includes physiological changes, molecular mechanisms, technical means improve tolerance stress. It provides reference for cultivating heat-resistant varieties rational utilization resistance

Language: Английский

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Comparative and Spatial Transcriptome Analysis of Rhododendron decorum Franch. During the Flowering Period and Revelation of the Plant Defense Mechanism

Genes, Journal Year: 2024, Volume and Issue: 15(11), P. 1482 - 1482

Published: Nov. 18, 2024

is a globally distributed and extensive genus, comprising over 1000 species. In the southwestern mountains of China, there exists remarkable diversity

Language: Английский

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