Dormancy Dynamics in Japanese Plum: Transcriptomic Responses to Variable Climatic Conditions and Chill Requirements
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Date
2025-07-15
Authors
Herrera Lagranja, SaraHormaza Urroz, José Ignacio
Ylla, Guillerm
Rodrigo García, Francisco Javier
Lora, Jorge
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Research Square R&D LLC
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texto , artículo preliminarAbstract
Dormancy progression in temperate fruit trees is highly sensitive to environmental conditions and chilling accumulation. To investigate the regulation of dormancy in Japanese plum (Prunus salicina hybrids), we performed a comparative transcriptomic analysis of flower buds from two Japanese plum cultivars with different chilling requirements, ´Hiromi Red´ (high chill) and ´Crimson Glo´ (low chill), grown under contrasting climatic climates (semi-arid and Mediterranean subtropical). The study combined phenological observations, quantification of chill and heat requirements, as well as transcriptomic analyses across three key developmental stages: full dormancy (T0), dormancy release (T1), and full recovery (T2). Climate exerted a stronger influence than dormancy stage on gene expression profiles, leading to cultivar- and climate-specific transcriptional responses. Key dormancy-related genes—such as DAM, FT, and SAP1— exhibited differential expression patterns across climates, suggesting roles in climatic adaptation. Notably, dormancy phases occurred approximately one month earlier under Mediterranean subtropical conditions, accompanied by a marked reduction in chilling requirements. Expression and phylogenetic analyses revealed that environmental conditions had a stronger effect on the transcriptomic profiles than the progression of dormancy itself, potentially due to epigenetic modulation. These findings provide new insights into the molecular mechanisms underlying dormancy in woody perennial species and offer perspectives for developing cultivars better adapted to changing climatic scenarios.
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Bibliographic citation
Herrera, S., Hormaza, J. I., Ylla, G., Rodrigo, J., & Lora, J. (2025). Dormancy Dynamics in Japanese Plum: Transcriptomic Responses to Variable Climatic Conditions and Chill Requirements. Research Square. https://doi.org/10.21203/rs.3.rs-7114924/v1
AGROVOC subjects
Prunus salicinaPrunus salicina
Salida De La Latencia
Regulación De La Expresión Genética
Adaptación Al Cambio Climático
Temperatura
Epigenético
Frutas De Clima Templado
Sponsorship
Esta investigación ha sido financiada por el proyecto ADAPFRUTCC, que cuenta con el apoyo de la Fundación Biodiversidad del Ministerio para la Transición Ecológica y el Reto Demográfico, a través de la convocatoria de ayudas para la ejecución de proyectos que contribuyan al Plan Nacional de Adaptación al Cambio Climático (2021-2030); el proyecto PID2020-115473RR-I00, financiado por ICIU/AEI/10.13039/501100011033/, Grupo Consolidado A12-17R financiado por el Gobierno de Aragón - Fondo Social Europeo, «El FSE invierte en tu futuro», la beca predoctoral PRE2018-084962 financiada por MCIN/AEI/10.13039/501100011033 para Sara Herrera, y el Área de Investigación Prioritaria BioS dentro del programa «Iniciativa de Excelencia - Universidad Investigadora» de la Universidad Jagellónica de Cracovia.