Plant “Puberty” – Acquiring A “License To Flower”

Is There a Single Flower-Inducing Pathway? It’s well known that “florigen” is the signal that triggers the transition from vegetative to reproductive development in plants that flower in response to photoperiod. But some plants, for example the “Night-Neutral” (a.k.a., “Day-Neutral”) plants, apparently initiate flowering because of factors other than night…

Continue reading

Hothouse Flowers: Why Does A Warm Spring Promote Flowering?

Warming Temps –> “Fast-Forward” Flowering Unusually warm temperatures often cause some plants to flower early. For example, this spring in eastern North America unseasonably high temperatures have induced some plants to put flowering on “fast forward”. Coincidentally, a recently-published research report (see Ref. 1 below) has revealed a genetic “switch”…

Continue reading

Plants That “Remember” – Some Plants Can Record Environmental Experiences For Future Reference By Altering Their DNA

Plant memory? Can some plants access past experiences so that this information can be incorporated into new responses, such as flowering? The answer is: Yes! (as illustrated in the photo on the the left). This picture shows a cabbage plant that was grown for five years in the laboratory of…

Continue reading