Some potential ideas include reviewing the latest research on enhancing climate change resilience in agricultural crops, the origin and evolution of stomata, molecular mechanisms underlying plant responses to nutrients, the role of plant cell walls in mechanical signaling and morphogenesis, the co-evolution of plant-pollinator mutualisms, or the trade-offs in plant life history strategies under global warming. These topics offer opportunities to synthesize diverse research areas and provide novel insights that could advance the understanding of your plants in a wider context.

This is typical botany field research I think. But I want to do review in isolation of plant secondary metabolites in medicinal plants or family.. can u suggest any topic..