Phosphite (Phi) and phosphate (Pi) share the same root uptake system, but Phi acts as a biostimulant that modulates plant growth and disease resistance in a species‑ and Pi‑dependent manner. In Arabidopsis, Phi induces hypersensitive‑like cell death and enhances resistance to Plectosphaerella cucumerina, while in rice it counteracts Pi‑induced susceptibility to Magnaporthe oryzae and Fusarium fujikuroi, accompanied by extensive transcriptional reprogramming.

The study examined how DNA methylation influences cold stress priming in Arabidopsis thaliana, revealing that primed plants exhibit distinct gene expression and methylation patterns compared to non-primed plants. DNA methylation mutants, especially met1 lacking CG methylation, showed altered cold memory and misregulation of the CBF gene cluster, indicating that methylation ensures transcriptional precision during stress recall.

The study identifies the histone methyltransferase SDG26 as a positive regulator of cold stress responses in Arabidopsis thaliana, showing that it is induced by cold and promotes expression of CBF‑COR genes via H3K36me3 deposition. Loss of SDG26 enhances freezing tolerance but compromises drought tolerance by affecting ABA biosynthesis and stomatal closure, indicating that SDG26 integrates ABA‑dependent and independent pathways to balance cold acclimation with water conservation.

A diverse rice germplasm panel was screened for cold tolerance at seedling and reproductive stages using artificial cold-water tanks, natural field conditions, and controlled cold facilities, with performance evaluated via quantitative and qualitative traits. Several genotypes displayed stage-specific or combined tolerance, while others were consistently vulnerable, and PCA indicated overlapping yet distinct physiological mechanisms across environments, supporting the existence of stage-specific QTLs for cold resistance.

The study reveals that the cold‑repressed transcription factor MtCBF4 suppresses anthocyanin synthesis in Medicago truncatula by repressing MtLAP1 and modulating histone H3K27 trimethylation via activation of the demethylase MtJMJ13. MtJMJ13, in turn, demethylates the gene bodies of MtCBF4 and other negative regulators, creating a feedback loop that is inhibited under cold stress, thereby increasing anthocyanin accumulation and enhancing cold tolerance. This work identifies a transcription‑epigenetic regulatory module controlling anthocyanin production during cold stress.

The study used RNA‑seq to compare early transcriptional responses to acute heat and cold stress in cultivated cranberry (Vaccinium macrocarpon) and its F1 hybrids with the cold‑adapted wild relative V. oxycoccos. Cold stress triggered differential expression in pathways such as photosynthesis, ribosomes, defense, and hormone signaling, with some hybrids showing transiently elevated cold‑responsive expression, suggesting potential cold‑tolerance introgression. The results highlight the utility of wild germplasm for breeding temperature‑resilient cranberries.

The authors examined how the long non-coding RNAs SVALKA (SVK) and SVALNA (SVN) regulate the cold‑responsive transcription factors CBF1 and CBF3 in Arabidopsis thaliana. Using native elongation transcript sequencing, CRISPR‑Cas9 deletions, and RT‑qPCR, they showed that SVK acts both in cis and trans through RNAPII collision and chromatin remodeling, while SVN acts cis‑negatively via RNAPII collision, with isoform diversity generated by alternative splicing being critical for function.

The study examines how the SnRK1 catalytic subunit KIN10 integrates carbon availability with root growth regulation in Arabidopsis thaliana. Loss of KIN10 reduces glucose‑induced inhibition of root elongation and triggers widespread transcriptional reprogramming of metabolic and hormonal pathways, notably affecting auxin and jasmonate signaling under sucrose supplementation. These findings highlight KIN10 as a central hub linking energy status to developmental and environmental cues in roots.