The evolution of spinable cotton fiber entailed prolonged development and a novel metabolism

ABSTRACT: exceptional example of evolutionary innovation is the single-celled seed trichome in Gossypium ("cotton fiber"). We have used fiber development in Gossypium as a system to understand how morphology can rapidly evolve. Fiber has undergone considerable morphological changes between the short, tightly adherent fibers of G. longicalyx and the derived long, spinable fibers of its closest relative, G. herbaceum, that facilitated cotton domestication. We conducted comparative gene expression profiling across a developmental time-course of fibers from G. longicalyx and G. herbaceum using microarrays with ~ 22,000 genes. Expression changes between stages were temporally protracted in G. herbaceum relative to G. longicalyx, reflecting a prolongation of the ancestral developmental program. Gene e

ORGANISM(S): Gossypium herbaceum

SUBMITTER: Guanjing Hu 

PROVIDER: E-GEOD-10228 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress