SWEET sugar transporters regulate plant carbon allocation, but their role in fungal root symbiosis remains unclear. Jogawat et al. show that SWEET12 is rapidly induced in the roots during Serendipita indica colonization and is essential for maintaining mutualism. Transcriptome analysis revealed that SWEET12 supports plant immune competence during symbiosis by coordinating sugar homeostasis, nutrient metabolism, defense signaling, and transport.

eterophylly enables amphibious plants to form distinct terrestrial and submerged leaves, but cross-species uniform quantification standards and shared molecular regulatory pathways remain unclear. Li et al. have integrated morphological observation and comparative transcriptomics of eight amphibious eudicots to explore leaf trait measurement, key developmental genes and hormonal regulators of heterophylly. They found that the dissection index best quantifies leaf complexity, and submergence lowers stomatal density, together with other endogenous hormonal and transcription factors, while exogenous ABA simplifies underwater leaves in most species. These conserved and lineage-specific regulatory pathways reveal convergent aquatic plant adaptation and provide transcriptomic resources for studying plant environmental plasticity.

植物は葉の向きを絶えず調整しており、それによって光合成をはじめとする多様な生理機能が影響を受ける。しかし葉の運動は従来、角度の時系列として記述されてきたため、葉が三次元空間でどのような経路をたどって動くのかを捉えることは難しかった。中田らは、葉の三次元形状から発生軸に沿った正規直交基底を復元し、葉の姿勢を三次元回転群SO(3)の元として表現する枠組みを構築した。これにより、葉の運動を回転の軌跡として捉えることが可能となる。