POLI F., Tosi B., DALL'OLIO G. & BRUNI A. 1992. Production of thiophenes in calli and suspension cultures of Tagetes patula L. as influenced by light/dark succession. — Phyton (Horn, Austria) 31 (2): 257-262, 3 figures. English with German summary. HPTLC-densitometry was used to evaluate thiophene accumulation in leaf calli and cell suspension of Tagetes patula. Calli obtained from 7-8 weeks ol...

The flowers of French marigold (Tagetes patula L.) are widely used in folk medicine, in particular for treating inflammation-related disorders. However, cellular mechanisms of this activity demand further investigation. In the present work, we studied the potential of T. patula compounds to alleviate the oxidative stress in hydrogen peroxide-challenged human lymphoblastoid Jurkat T-cells. Crude...

The pitch canker pathogen Fusarium circinatum has caused devastation to Pinus spp. in natural forests and non-natives in commercially managed plantations. This has drawn attention to the potential importance of Fusarium species as pathogens of forest trees. In this study, we explored the diversity of Fusarium species associated with diseased Pinus patula, P. tecunumanii, P. kesiya and P. maximi...

This is the third article in a series of four articles dealing with the P vs. NP question. The purpose of this work is to demonstrate that although the oracle relativizations of the NP complexity class eliminate some methods as possible routes to a solution, the methods used in the first two articles of this series are not affected by oracle relativizations. Furthermore, the solution to the P v...

Impatiens bokorensis, a new species of family Balsaminaceae from Phnum Bokor National Park in southwestern Cambodia, is described and illustrated. The species is similar to Impatiens patula, but is readily distinguished by the orbicular-obovate dorsal petal, shorter pedicels and larger seeds.

Large White Butterfly, Pieris brassicae L. (LWB) is one of the greatest pests of cruciferous cultures in Estonia, and, in the years of its biggest abundance, it can destroy a significant part of a crop. Many plants contain natural compounds that can repel and/or attract insects and protect neighbouring plants. This principle is used in a method known as companion planting. The aim of this paper...

Species of Tagetes, which belong to the family Asteraceae show different characteristics including, bloom size, shape, and color; plant size; and leaf shape. In this study, we determined the differences in primary metabolites and carotenoid yields among six cultivars from two Tagetes species, T. erecta and T. patula. In total, we detected seven carotenoids in the examined cultivars: violaxanthi...

A new species of Ovulidae, Simnia hiscocki, is described from the Cornwall Peninsula, England, and compared with Simnia patula occurring in the same area, from which it differs in shelland radula-morphological features as well as ecological features. DNA analysis suggests that it is a very young species whose host-specificity to Eunicella verrucosa makes it a potentially useful species for moni...

We study the polynomial time counting hierarchy, a hierarchy of complexity classes related to the notion of counting. We investigate some of their structural properties, settling many open questions dealing with oracle characterizations, closure under boolean operations, and relations with other complexity classes. We develop a new combinatorial technique to obtain relativized separations for s...