A study on microbial diversity in different cultivars of Brassica napus in relation to its wilt pathogen, Verticillium longisporum.

Oilseed rape (Brassica napus) is one of the major oilseed crops in the world but is vulnerable to attack by many pathogens and insect pests. In addition to the host plant genotype, micro-organisms present in the rhizosphere and within plant tissues affect the susceptibility to plant pathogens. While rapid progress has been achieved concerning the concept of plant resistance genes, information on the role of the microbial community in plant protection is less apparent.

Screening of oxylipins for control of oilseed rape (Brassica napus) fungal pathogens.

Oxylipins are products of oxygenase-catalyzed reactions of fatty acids. Oxylipins have been found or implied to participate in a variety of different functions in or between organisms. In this report we investigated the potential of various naturally occurring oxylipins found in plants for their effects as fungicides on a number of fungal pathogens interfering with Brassica cultivation.

Complex formation of myrosinase isoenzymes in oilseed rape seeds are dependent on the presence of myrosinase-binding proteins.

The enzyme myrosinase (EC 3.2.3.

The myrosinase-glucosinolate system in the interaction between Leptosphaeria maculans and Brassica napus.

summary Leptosphaeria maculans causes blackleg disease, and resistance to this fungal pathogen is an important trait in the breeding of oilseed rape. A better comprehension of the role of the myrosinase-glucosinolate system in this context is of great value. The present study is the first to address effects on multiple components of this complex system, including concentrations of individual glucosinolates, product formation, myrosinase isoform distribution and activity, and levels of myrosinase binding proteins during the infection process.

The v(6)=2 States of the Four C(3v)-Symmetry Isotopomers of FClO(3).

High-resolution infrared spectra of the four isotopomers of FClO(3) of C(3v) symmetry have been analyzed in order to obtain data on overtones of the nu(6) vibrational mode. For v(6)=2, two different approaches have been used. The component with l(6)=0 has been studied by the analysis of the 2nu(6)(0) parallel band at 809 cm(-1) and 779 cm(-1) for the species with (16)O and (18)O respectively.