Connecting optical remote sensing of plant photosynthesis with biogenic volatile organic compound emissions.

ABSTRACT: Plant biogenic volatile organic compounds (BVOCs) play a critical role in atmospheric chemistry by forming ozone and secondary organic aerosols, making them key agents in regulating air quality and influencing climate. However, current models usually rely on limited site-specific data and indirect inputs, introducing significant uncertainties in BVOC predictions. We propose remote sensing of photosynthetic optical signals, such as the carotenoid-sensitive photochemical reflectance index (PRI) and Chl/carotenoid index (CCI) and sun-induced fluorescence (SIF), to help reduce these uncertainties. These indices are functionally linked, albeit indirectly for SIF, to isoprenoid BVOC emissions via carotenoid biosynthesis. In this Viewpoint, we explore the potential of this connection to estimate

SUBMITTER: Zhang C 

PROVIDER: S-EPMC12445812 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature