Blooming bouquets! Japanese scientists discover flower aging cure

morning-glory-173440_640Japanese Scientists at the National Agriculture and Food Research Organization in Tsukuba, Ibaraki Prefecture, claim to have found a way to delay the aging process in flowers by up to half, keeping bouquets fresh for longer.

Discovery of the gene believed to be responsible for the short shelf-life of flowers in one Japanese variety of morning glory is responsible for the breakthrough. By suppressing this gene — named “EPHEMERAL1″ — scientists found the life span of each flower was almost doubled.

“Morning glory” is the name for a large group of flowering plants whose petals unfurl early in the day and begin to fade and curl by nightfall. So far, the scientists have managed to isolate the aging gene in just one variety of Japanese morning glory but believe these methods could be applied to other flower species.

“Unmodified flowers started withering 13 hours after they opened, but flowers that had been genetically modified stayed open for 24 hours,” said Kenichi Shibuya, one of the lead researchers in the study carried out jointly with Kagoshima University.

This means the plant has fresh purple flowers alongside the paler blooms from the previous day, he said.

This gene is linked to petal aging, the researchers discovered. Although the scientists have only modified the genes of living flowers in the study, their discovery could lead to  the development of methods to extend the life of cut flowers.

“It would be unrealistic to modify genes of all kinds of flowers, but we can look for other ways to suppress the (target) gene . . . such as making cut flowers absorb a solution that prevents the gene from becoming active,” said Shibuya.

Some florists currently use chemicals to inhibit ethylene, a plant hormone which sometimes causes blooms to ripen, in the preparation of some cut flowers. This does not always help as ethylene is not present in the aging process of some very popular flowers, such as lilies, tulips and irises.

A gene similar to EPHEMERAL1 could be responsible for petal aging in these plants, Shibuya said, meaning the ability to suppress it would extend their life.

Source: The Japan Times

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