Chloroplast ABC peptide transporters TAP1, NAP8, and ATH12 are essential for heat-induced peptide export and play a key role in thermotolerance in Arabidopsis thaliana.

This study identifies and characterizes the chloroplast-localized ABC peptide transporters TAP1, NAP8, and ATH12 in *Arabidopsis thaliana* as a redundant system essential for heat-induced peptide export, which is critical for maintaining redox homeostasis and ensuring thermotolerance.

Jeran, N., Domingo, G., Tadini, L. + 9 more2026-03-06📄 plant biology

AATRhg1 is a tonoplast protein that alters amino acid, metabolic and defense responses and nematode resistance

This study identifies AATRhg1 as a tonoplast-localized amino acid transporter encoded by the Rhg1 locus that is essential for soybean cyst nematode resistance, as its silencing disrupts specific amino acid levels, defense signaling pathways, and metabolite profiles while compromising resistance to both standard and virulent nematode populations.

Du, Y., Lowenstein, A., El-Azaz, J. + 2 more2026-03-06📄 plant biology

Spatiotemporal dynamics of ethylene biosynthesis shape infection and nodule initiation in Medicago truncatula

This study reveals that the spatiotemporal reprogramming of ethylene biosynthesis in *Medicago truncatula*, driven by the distinct roles of MtACS3 and MtACS10 in shifting ethylene signaling from inner to outer root tissues, is essential for balancing rhizobial infection and nodule initiation while defining the spatial limits of nodulation.

Muller, S., Stegmann, T., Adema, K. + 13 more2026-03-06📄 plant biology

Differential photoperiodic control of morning and evening expressed transcripts in tomato

Through high-resolution RNA-seq time-course analysis of tomato under varying photoperiods, this study reveals that morning-phased transcripts act as transcriptional sensors of day length to serve as zeitgeber references for evening transcripts, which measure photoperiod via coincidence with external cues to drive seasonal adaptation.

Gonzalez-Delgado, A., Wabnik, K., Jimenez-Gomez, J. M.2026-03-06📄 plant biology

Streptomyces enrichment in roots during drought is uncoupled from plant benefit and is driven by host suppression of iron uptake and immunity

This study reveals that drought-induced suppression of plant immunity and iron uptake drives *Streptomyces* enrichment in roots across diverse soils and evolutionary lineages, yet the resulting plant benefits are uncoupled from this enrichment and instead depend on intra-genus antagonism among bacterial strains.

Fitzpatrick, C., Smith, R., Hige, J. + 18 more2026-03-06📄 plant biology

The MBW complex regulates volatiles in petunia flowers: EOBV interacts with AN1 to suppress biosynthesis of phenylpropenes

This study demonstrates that the EOBV protein functions as a component of the MBW complex to negatively regulate phenylpropene biosynthesis in petunia flowers while also mitigating heat-induced reductions in flower size, thereby revealing a molecular link between floral scent, pigmentation, and development.

Skaliter, O., Cohen, R., Leor-Librach, E. + 6 more2026-03-05📄 plant biology

A high-quality genome assembly and integrative data portal (Phabase) for the Mesoamerican black bean (Phaseolus vulgaris cv. Negro Jamapa)

This study presents the first high-quality chromosome-level genome assembly of the Mesoamerican black bean cultivar Negro Jamapa and introduces Phabase, an integrative data portal providing this genome alongside a comprehensive expression atlas and analytical tools to advance common bean functional genomics and breeding.

Akyol, T. Y., Villa-Rodriguez, E. D., Salgado, H. + 6 more2026-03-04📄 plant biology

Tissue- and Age-Specific Transcriptomic and Metabolomic Analysis Reveals Regulatory Mechanisms of Ginsenoside Biosynthesis in Panax notoginseng

By integrating targeted metabolomics and transcriptome profiling across multiple tissues and developmental stages, this study elucidates the spatiotemporal regulatory mechanisms of ginsenoside biosynthesis in *Panax notoginseng* and identifies four key transcription factors (AT3G12130, SPL9, MYB33, and SPL1) that coordinate the expression of biosynthetic enzymes to drive tissue-specific accumulation.

Li, W., Wang, Y., Wei, F. + 3 more2026-03-04📄 plant biology