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1

Identification of powdery mildew resistance genes in common wheat (Triticum aestivum L. em. Thell.). XI. Cultivars grown in Poland

100%
Kowalczyk K., Hsam S. L. K., Zeller F. J.
Journal of Applied Genetics
|
1998
|
vol. 39
|
issue 3
225-236
EN
A collection of common wheat cultivars grown in Poland were analyzed for resistance to powdery mildew disease by using eleven differential isolates of Erysiphe graminis f. sp. tritici (Blumeria graminis). Among a total of 69 accessions, 48 cultivars possessed resistance which is attributed to known resistance genes present either individually or in a combination. Four cultivars were resistant to all the isolates used and another four cultivars revealed race-specific resistance which does not correspond to the response patterns of previously documented resistance. Resistance genes Pm2 and Pm6 in a combination were most widely distributed, and genes Pm3d, Pm4b, Pm5 and Pm8 were also postulated.
2

Characteristcs and regulation of the expression of genes coding Erwinia pectinases and its significance for soft rot disease

100%
Jafra S., Lojkowska E.
Biotechnologia
|
1999
|
issue 2
104-119
EN
The enterobacterium Erwinia causes soft rot disease in various plants. Erwinia pathogenicity results from the secretion of pectinolytic and cellulolytic enzymes responsible for the deterioration of the plant cell wall. It produces pectin methylesterases, several pectate lyases, polygalacturonase, pectin lyase, cellulases and hemicellulase. Regulation of pectinases genes requires several regulatory systems. Deletion of the major pectate lyase genes from Erwinia genome failed to totally eliminate tissue maceration. Structural genes for secondary pectate lyase were cloned and sequenced. The important role of the secondary pelL gene in the development of infection was demonstrated.
3

Enhancing the resistance of triticale by using genes from wheat and rye

75%
Tyrka M., Chelkowski J.
Journal of Applied Genetics
|
2004
|
vol. 45
|
issue 3
283-295
EN
At present two separate nomenclature systems exist for wheat and rye. This paper provides a proposed common catalogue of wheat, rye and triticale resistance gene symbols. More than 130 postulated wheat resistance genes are listed. Over 39 rye and 6 triticale resistance (R) genes have been identified and named. Genes responsible for reaction to powdery mildew and to leaf, stem and yellow rusts are the best-represented group of resistance genes. From the common catalogue it can be concluded that there exists a potential for further transfer of rye resistance genes to wheat and triticale. Many molecular markers can be applied for marker-assisted gene transfer, but the expression of the R genes in the new genetic background of triticale remains to be investigated.
4

Surfactant proteins SP-A and SP-D in human health and dis

75%
Kishore U., Lopez B. A., Kamran M. F., Saxena S., Singh M., Sarma P. U., Madan T., Chakraborty T.
Archivum Immunologiae et Therapiae Experimentalis
|
2005
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vol. 53
|
issue 5
399-417
EN
Surfactant proteins A (SP-A) and D (SP-D) are lung surfactant-associated hydrophilic proteins which have been implicated in surfactant homeostasis and pulmonary innate immunity. They are collagen-containing C-type (calcium-dependent) lectins, called collectins, and are structurally similar to mannose-binding protein of the lectin pathway of the complement system. Being carbohydrate pattern-recognition molecules, they recognize a broad spectrum of pathogens and allergens via the lectin domain, with subsequent activation of immune cells via the collagen region, thus offering protection against infection and allergenic challenge. SP-A and SP-D have been shown to be involved in viral neutralization, clearance of bacteria, fungi, and apoptotic and necrotic cells, the down-regulation of allergic reaction, and the resolution of inflammation. Studies on single-nucleotide polymorphism, protein levels in broncho-alveolar lavage, and gene knock-out mice have clearly indicated an association between SP-A and SP-D and a range of pulmonary diseases. In addition, recent studies using murine models of allergy and infection have raised the possibility that the recombinant forms of SP-A and SP-D may have therapeutic potential in controlling pulmonary infection, inflammation, and allergies in humans.
5

Integrated methods of control of root rot pathogens in broadleaved stands in Poland

63%
Oszako T.
Biotechnologia
|
1993
|
issue 1
46-48
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