Intra-specific differentiation in Gossypium hirsutum

Subgenome-specific markers in allopolyploid cotton Gossypium hirsutum: implications for evolutionary analysis of polyploids.

We developed a set of genetic markers specific to the A and D genome types of cotton using representational difference analysis (RDA). These markers produce amplification products with genomic DNA from allotetraploid cotton Gossypium hirsutum. One of the markers is a polymorphic amplified restriction fragment (PARF) - a sequence found in both A and D genomes but differently flanked by restricti...

Infraspecific DNA methylation polymorphism in cotton (Gossypium hirsutum L.).

Cytosine methylation is important in the epigenetic regulation of gene expression and development in plants and has been implicated in silencing duplicate genes after polyploid formation in several plant groups. Relatively little information exists, however, on levels and patterns of methylation polymorphism (MP) at homologous loci within species. Here we explored the levels and patterns of met...

AtWuschel Promotes Formation of the Embryogenic Callus in Gossypium hirsutum

Upland cotton (Gossypium hirsutum) is one of the most recalcitrant species for in vitro plant regeneration through somatic embryogenesis. Callus from only a few cultivars can produce embryogenic callus (EC), but the mechanism is not well elucidated. Here we screened a cultivar, CRI24, with high efficiency of EC produce. The expression of genes relevant to EC production was analyzed between the ...

The biology and ecology of cotton (Gossypium hirsutum) in Australia

Spodoptera exigua modulates gossypol biosynthesis in cotton Gossypium hirsutum

Cotton plants induce high levels of gossypol in response to herbivore damage. However, little is known about the mechanisms by which insect herbivory modulates gossypol biosynthesis in cotton plants. Here, we report the mechanism by which herbivore damage or insect-originated elicitors modulate the biosynthesis of gossypol and jasmonic acid (JA) in plants. Spodoptera exigua larval-damaged (HD) ...