The Cascade Reaction Chemistry of Diazo Compounds with Intentionally Designed Alkene to Access Esterified Heterocycles.

Exploration of the cascade reactivity of diazo compounds with alkenes is a challenging and largely unmet goal. Herein, we disclose a light-mediated de novo synthesis of esterified heterocycles under mild conditions. The reaction displays a broad functional group tolerance, including a wide variety of alkenes, diazo compounds, and some bioactive molecules.

The nitrate transporter NRT2.1 directly antagonizes PIN7-mediated auxin transport for root growth adaptation.

As a crucial nitrogen source, nitrate (NO) is a key nutrient for plants. Accordingly, root systems adapt to maximize NO availability, a developmental regulation also involving the phytohormone auxin. Nonetheless, the molecular mechanisms underlying this regulation remain poorly understood.

Photoinduced, Silver(I)-Mediated Synthesis of Ester-Substituted Fused Quinazolinones via Cascade Alkoxycarbonylation/Cyclization of Heterocycles Bearing Unactivated Alkenes.

A new cascade alkoxycarbonylation/cyclization reaction of heterocycle-bearing unactivated alkenes is disclosed. The transformation is mediated by silver carbonate under photoirradiation. This method provides efficient access to pharmaceutically valuable molecules and natural product analogues containing quinazolinone-fused esters.

Nitrate availability controls translocation of the transcription factor NAC075 for cell-type-specific reprogramming of root growth.

Plant root architecture flexibly adapts to changing nitrate (NO) availability in the soil; however, the underlying molecular mechanism of this adaptive development remains under-studied. To explore the regulation of NO-mediated root growth, we screened for low-nitrate-resistant mutant (lonr) and identified mutants that were defective in the NAC transcription factor NAC075 (lonr1) as being less sensitive to low NO in terms of primary root growth. We show that NAC075 is a mobile transcription factor relocating from the root stele tissues to the endodermis based on NO availability.