Deciphering the genomic structure, function and evolution of carotenogenesis related phytoene synthases in grasses.

ABSTRACT:

Background

Carotenoids are isoprenoid pigments, essential for photosynthesis and photoprotection in plants. The enzyme phytoene synthase (PSY) plays an essential role in mediating condensation of two geranylgeranyl diphosphate molecules, the first committed step in carotenogenesis. PSY are nuclear enzymes encoded by a small gene family consisting of three paralogous genes (PSY1-3) that have been widely characterized in rice, maize and sorghum.

Results

In wheat, for which yellow pigment content is extremely important for flour colour, only PSY1 has been extensively studied because of its association with QTLs reported for yellow pigment whereas PSY2 has been partially characterized. Here, we report the isolation of bread wheat PSY3 genes from a Renan BAC library using Brachyp

SUBMITTER: Dibari B 

PROVIDER: S-EPMC3413518 | biostudies-literature | 2012 Jun

REPOSITORIES: biostudies-literature