Dehydrins and Soluble Sugars Involved in Cold Acclimation of Rosa wichurana and Rose Cultivar ‘Yesterday’

Ouyang, Lin; Leus, Leen; Keyser, Ellen De; Labeke, Marie-Christine Van

doi:10.3390/horticulturae7100379

Cited by 5 publications

(4 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Roses acclimate progressively in the fall until they reach their maximum level of winterhardiness midwinter and start to deacclimate. In a recent study, Ouyang et al (2021) suggested that cold-hardy genotypes might acclimate faster and reach their maximum hardiness level earlier in the winter in comparison with nonhardy genotypes. Consequently, the multifactorial complex nature of field winter survival makes field trials the ultimate approach to measure field winterhardiness in roses, and only multiyear field testing can estimate winter survival (Karam and Sullivan, 1991).…”

Section: Regrowthmentioning

confidence: 99%

Mapping Winterhardiness in Garden Roses

Rouet

O’Neill

Banks

et al. 2022

J. Amer. Soc. Hort. Sci.

View full text Add to dashboard Cite

Field winterhardiness is a critical trait in rose cultivars (Rosa ×hybrida) grown in northern climates. Although the molecular basis of cold hardiness has been well documented in model organisms such as Arabidopsis thaliana, little is known about the genetics and mechanisms underlying winterhardiness in roses. This research aims to explore the genetic control of winterhardiness for application in breeding programs using quantitative trail loci (QTL) analysis in two biparental rose populations derived from cold-hardy roses of the Canadian Explorer Series Collection. Field winterhardiness was assessed as a complex trait with winter damage and regrowth recorded in multiyear and multilocation trials in Ontario and Saskatchewan, Canada. In addition, this research explored the relationship between field measurements and electrolyte leakage recorded under artificial conditions. Electrolyte leakage had limited utility for application in rose breeding programs as a substitute for field evaluation, but did enable identification of QTL associated with potential cold hardiness candidate genes. A QTL for electrolyte leakage mapped to a genomic region that harbors a CBF1-like transcription factor. A total of 14 QTLs associated with field winter damage and regrowth were discovered, and they explained between 11% and 37% of the observed phenotypic variance. Two QTL associated with winter damage and regrowth overlapped with a known QTL for black spot (Diplocarpon rosae) disease resistance, Rdr1, in an environment under high disease pressure. Due to the complexity of field winterhardiness and its direct reliance on intertwined factors, such as overall plant health, moisture status, snow cover, and period of prolonged sub-zero temperatures, field trials are the ultimate measurement of field winterhardiness. Transgressive segregation was observed for all traits, and it was most likely due to complementary gene action. Field winter damage and regrowth were highly heritable in single environments, but they were subject to genotype × environment interaction resulting from pest pressure and severe climatic conditions.

show abstract

Section: Regrowthmentioning

confidence: 99%

Mapping Winterhardiness in Garden Roses

Rouet

O’Neill

Banks

et al. 2022

J. Amer. Soc. Hort. Sci.

View full text Add to dashboard Cite

show abstract

“…Similarly, gene expression studies have led to a greater understanding of plant acclimatization to abiotic stresses. During cold acclimation, the higher expression of dehydrins and increased sugar accumulation played an important role in roses [5]. This was verified by the increased transcript levels of Rosa hybrida sucrose-phosphate synthase (RhSPS) and Rosa hybrida invertase 2 (RhINV) genes in "Yesterday" and R. wichurana, respectively, while R. hybrida sucrose synthase (RhSUS) expression was downregulated in both cultivars during the cold months [5].…”

mentioning

confidence: 91%

“…More specifically, the objectives of this SI were to report novel genes; their functionality and cross talks with other genes; breeding activities, including the development and characterization of new cultivars; and the development of genomic resources, including high-density linkage map and transcriptome, and their applications in breeding. This SI gathered six research papers [1][2][3][4][5][6] based on a wide array of herbaceous and perennial ornamental crops in the fields of gene identification and interactions, ploidy manipulation, and genomics research.…”

mentioning

confidence: 99%

“…During cold acclimation, the higher expression of dehydrins and increased sugar accumulation played an important role in roses [5]. This was verified by the increased transcript levels of Rosa hybrida sucrose-phosphate synthase (RhSPS) and Rosa hybrida invertase 2 (RhINV) genes in "Yesterday" and R. wichurana, respectively, while R. hybrida sucrose synthase (RhSUS) expression was downregulated in both cultivars during the cold months [5]. Meanwhile, the expression of RhSPS and RhINV2 was found to be decreased during the warmer months of April, which signifies the involvement of oligosaccharides in cold acclimation [5].…”

mentioning

confidence: 99%

See 1 more Smart Citation