A large number of studies Cistus ladanifer highlight this Mediterranean shrub as a source the phenolic compounds responsible for allelopathic potential species. There are few present in C. that have not yet been studied. The objective work was to evaluate activity estragole and 2-isopropylphenol on filter paper soil monocotyledons (Allium cepa) dicotyledons (Lactuca sativa). results showed when...

Benzoxazinoids (BXs) are phytochemicals that exert plant-protecting, allelopathic, and human-health-promoting effects. Here, we present a data-dependent acquisition-mass spectrometry based method to locate annotate BX-conjugates in different fractions of plant extract. This allows for isolation compounds much smaller percentage than common natural products yet still sufficient subsequent identi...

SlARF2a is expressed in most plant organs, including roots, leaves, flowers and fruits. A detailed expression study revealed that SlARF2a is mainly expressed in the leaf nodes and cross-sections of the nodes indicated that SlARF2a expression is restricted to vascular organs. Decapitation or the application of 6-benzylaminopurine (BAP) can initially promote axillary shoots, during which SlARF2a ...

The leaf venation of dicotyledons forms complex patterns. In spite of their large variety of morphologies these patterns have common features. They are formed of a hierarchy of structures, which are connected to form a reticulum. Excellent images of these patterns can be obtained from leaves from which the soft tissues have been removed. A numerical image processing has been developed, speciall...

The ever-increasing wealth of whole-genome information prompts for phylogenies based on entire genomes. The quest for a good distance measure, however, poses a big challenge; e.g. because of large-scale evolutionary events such as genomic rearrangements or inversions. We introduce here an information theory driven measure that for the encoded protein domain composition of genomes as protein dom...

Dicotyledons have evolved a strategy to compensate for the increase in hydraulic resistance to water transport with height growth by widening xylem conduits downwards. In monocots, the accumulation of hydraulic resistance with height should be similar, but the absence of secondary growth represents a strong limitation for the maintenance of xylem hydraulic efficiency during ontogeny. The hydrau...

4-Coumarate:coenzyme A ligase (4CL; EC 6.2.1.12) is a key enzyme in the phenylpropanoid metabolic pathways for monolignol and flavonoid biosynthesis. 4CL has been much studied in dicotyledons, but its function is not completely understood in monocotyledons, which display a different monolignol composition and phenylpropanoid profile. In this study, five members of the 4CL gene family in the ric...