The study investigates the gene regulatory network (GRN) controlling flowering time in the allotetraploid crop Brassica napus by comparing its transcriptome to that of Arabidopsis thaliana. While most orthologous gene pairs show conserved expression dynamics, several flowering‑time genes display regulatory divergence, especially under cold conditions, indicating subfunctionalisation among paralogues. Despite these differences, the overall GRN topology remains similar to Arabidopsis, likely due to retention of multiple paralogues.
The authors used a bottom‑up thermodynamic modelling framework to investigate how plants decode calcium signals, starting from Ca2+ binding to EF‑hand proteins and extending to higher‑order decoding modules. They identified six universal Ca2+-decoding modules that can explain variations in calcium sensitivity among kinases and provide a theoretical basis for interpreting calcium signal amplitude and frequency in plant cells.
Spinach (Spinacia oleracea L.) Flavonoids Are Hydrolyzed During Digestion and Their Bioaccessibility Is Under Stronger Genetic Control than Raw Material Content
Authors: Dzakovich, M., Tak, A. L., Le, E. A., Dang, R. P., Redan, B. W., Dubrow, G. A.
The study evaluated flavonoid diversity, bioaccessibility, and heritability in a panel of 30 F1 and open‑pollinated spinach accessions grown under controlled conditions. Quantitative analysis of 39 flavonoids showed strong environmental influence, possible divergent biosynthetic branches, and higher heritability for bioaccessibility than for raw content, while in vitro digestion revealed substantial conversion of flavonoid aglycones. These findings highlight the complexity of spinach flavonoid metabolism and its relevance for breeding and nutritional outcomes.
Dissecting the genetic architecture of flowering and maturity time in almond (Prunus dulcis): heritability estimates and breeding value predictions from historical data
Authors: GOMEZ ABAJO, M. D. M., Dicenta, F., Martinez-Garcia, P. J.
The study estimated genetic parameters for flowering and maturity time in almond (Prunus dulcis) using classical segregation analyses and Bayesian linear mixed models on a pedigree of over 17,500 individuals spanning 30 years. Heritability and repeatability were quantified, breeding values (EBVs) were computed for all genotypes, and trait-specific rankings were generated to improve parental selection. The results provide a foundation for integrating genomic selection into almond breeding programs.
The study validates and quantifies biological nitrogen fixation in Mexican maize varieties and assesses a double‑haploid population derived from an elite inbred (PHZ51) crossed with these landraces. Aerial root traits show moderate to high heritability, and QTL mapping reveals multiple loci influencing root number, node occurrence, and diameter, with most favorable alleles originating from the landraces. The authors suggest that pyramiding the identified QTL into elite germplasm could enhance maize’s BNF capacity, pending field validation.