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p97/CDC48 is a major AAA-ATPase that acts in many cellular events such as ubiquitin-dependent degradation and membrane fusion. Its specificity depends on a set of adaptor proteins, most of them containing the ubiquitin regulatory X (UBX) domain. Using a differential hybridization system, we isolated a UBX-containing protein that is expressed during the early phase of male gametophyte development in...
Crossovers involve the reciprocal exchange of large fragments of genetic material between homologous chromosomes during meiosis. In this way, crossovers are the basis of genetics. Remarkably, the number and distribution of crossovers on chromosomes are closely controlled. Data from various model organisms (notably Saccharomyces cerevisiae) show that the distribution of crossovers results from a series...
A cDNA subtraction and differential hybridization strategy was used to isolate cDNAs expressed early during male gametophyte development in the important crop species Brassica napus. Three cDNAs, corresponding to genes highly and specifically expressed at the tetrad and microspore stages, are presented here. The analysis of one of them, named BnM3.4, by in situ hybridization, showed that it is expressed...
Despite the rapid increase in sequence databases, gene sequences are still under-used in the plant breeding and genetic mapping area. This study was conducted to determine whether pea gene sequences contained enough polymorphism to be used as genetic markers. Molecular variability was examined at the DNA sequence level within different lines and wild ecotypes of Pisum sativum. The analysis was...
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