Key genes in orchids determinedBy Su Meng-chuan and Kayleigh Madjar / Staff reporter, with staff writerNational Chung Hsing University (NCHU) researchers have discovered certain genes in orchids that can be used to manipulate flower hue, prolong the flowering period and prevent wilting, which could reduce the time needed to produce new orchid varieties from seven years to two months. Photo: Su Meng-chuan, Taipei TimesFive years ago, a research team led by Yang developed the “perianth password” theory, which discovered the L and SP complexes behind orchid petal formation. The SP complex determines sepal and petal formation, while the L complex determines the identity of the lip. Three of the genes involved in the creation of the SP complex can change the color of the flower, Yang said. Yang said the discovery refutes the assumption that the genes governing flower formation retreat after the floral organs are formed, showing that these mechanisms remain important in other stages of flower development.

Source: Taipei Times February 21, 2021 16:05 UTC