In this study, we characterized the miR482 family in cotton using existing small RNA datasets and the recently released draft genome sequence of Gossypium raimondii, a diploid cotton species whose progenitor is the putative contributor of the Dt (representing the D genome of tetraploid) genome of the cultivated tetraploid cotton species G. hirsutum and G. barbadense. Of the three ghr-miR482 mem...

ACCORDING to STEPHENS (1950) speciation in the genus Gossypium occurs both by cryptic structural differentiation of chromosomes and by major gene substitution and mutation. In the first paper of this series RHYNE (1958) reported a sizeable reduction of recombination values within linkage groups following a transfer of intact diploid Gossypium linkage groups into allotetraploid G. hirsutum. Thes...

MicroRNAs (miRNAs) are a class of non-coding RNAs that regulate gene post-transcriptional expression in animals and plants. Comparatively genomic computational methods have been developed to predict new miRNAs in worms, humans, and Arabidopsis. Here we present an EST (Expressed Sequence Tags)--and GSS (Genomic Survey Sequences)-based combined approach for the detection of novel miRNAs in Gossyp...

In the framework of a gene flow assessment, we investigated the natural hybridization rate between Gossypium hirsutum (AADD genome) and G. herbaceum (AA genome). The latter species, a diploid progenitor of G. hirsutum, is spontaneously present in South Africa. Reciprocal crosses were performed without emasculation between G. herbaceum and G. hirsutum Neither examination of the morphological cha...

Two new phenol derivatives, 2-(3-methyl-2-buten-1-yl)-4-methoxyethyl-phenol (1) and 5-hydroxy-4-(hydroxymethyl)-2-(3-methylbut-2-en-1-yl)cyclohex-4-en-1-one (2), together with eight known compounds consisting of phenol derivatives (3 and 4), niacinamide (5), and five ergosta type compounds (6-10), were isolated from solid fermentation products of Stereum hirsutum FP-91666. Two new structures we...

TUDIES of plasmon variations in Epilobium (MICHAELIS 1954; CASPARI 1948), Oenothera ( STINSON 1960; STUBBE 1960), Streptocarpus ( OEHLKERS 1938; OEHLKERS and EBELL 1958), Solanum (KOOPMANS 1951,1952,1954,1955, 1959; BUCK 1960), Clarkia (HIORTH 1948), yeast (EPHRUSSI 1953), and Culex ( LAVEN 1959) have demonstrated that heritable plasmon variations exist and are of evolutionary importance. A fur...