59 research outputs found
Towards a classification of branes in theories with eight supercharges
We provide a classification of half-supersymmetric branes in quarter-maximal
supergravity theories with scalars parametrising coset manifolds. Guided by the
results previously obtained for the half-maximal theories, we are able to show
that half-supersymmetric branes correspond to the real longest weights of the
representations of the brane charges, where the reality properties of the
weights are determined from the Tits-Satake diagrams associated to the global
symmetry groups. We show that the resulting brane structure is universal for
all theories that can be uplifted to six dimensions. We also show that when
viewing these theories as low-energy theories for the suitably compactified
heterotic string, the classification we obtain is in perfect agreement with the
wrapping rules derived in previous works for the same theory compactified on
tori. Finally, we relate the branes to the R-symmetry representations of the
central charges and we show that in general the degeneracies of the BPS
conditions are twice those of the half-maximal theories and four times those of
the maximal ones.Comment: 47 pages, 8 figure
POJAVA PHOMOPSIS SP. NA ACHILLEA MILLEFOLIUM
During a three year period (2004 to 2006) on locations of Eastern Croatia (Kneževi Vinogradi, Osijek, Brođanci and Krndija) we collected plants of Achillea millefolium L. from which we isolated Phomopsis sp. Many of the collected plants exhibited no visible symptoms of infection but in spring pycnidia were noticed on overwintered plants. Isolation was done on PDA from naturally infected plants and morphological and molecular characteristics were studied. Biometrical values of reproductive structures developed on naturally infected plants and grown on PDA were measured. Internal
transcribed spacers ITS rDNA of the examined isolates were sequenced. Although molecular analysis showed that isolates were grouped with Diaporthe arctii, we decided to classify isolates from A. millefolium as Phomopsis sp., the details of which were discussed in the paper.Phomopsis sp. izolirali smo s biljaka A. millefolium na kojima nije bilo vidljivih simptoma zaraze, kao i s biljaka sa simptomima tipičnima za Phomopsis vrste. Biljke su prikupljene tijekom tri godine (2004.-2006. godine) u jesen i proljeće na lokacijama (Kneževi Vinogradi, Osijek, Brođanci i Krndija) istočne Hrvatske. S prirodno zaraženih biljaka izolacija gljive obavljena je na KDA te su proučene morfološke i molekularne karakteristike. Biometrijske vrijednosti
reproduktivnih struktura izmjerene su u kulturi (KDA) i na prirodno inficiranome materijalu. Za proučavane izolate sekvencirane su unutarnje prijepisne razmaknice jezgrine DNA (ITS rDNA) te je utvrđena povezanost analiziranih izolata s Diaporthe arctii. Zbog nedovoljno pouzdanih informacija zadržan je naziv Phomopsis sp. detalji su raspravljeni u radu
First Report of Peyronellaea lethalis Associated With Ascochyta Blight Complex of Field Pea in Serbia
Ascochyta blight complex is a significant and widespread disease of field pea (Pisum sativum L.) caused by Peyronellaea pinodes, P. pinodella, and Ascochyta pisi. During the 2015 growing season, screening of isolates revealed a previously unknown member of this complex. Thirteen single-conidial isolates were obtained using standard phytopathological protocols. To our knowledge, this is the first report of P. lethalis associated with Ascochyta blight complex of field pea in Serbia
Diaporthe pseudolongicolla - novi patogen na semenu soje u Srbiji
Seed decay is one of the most important diseases of soybean (Glycine max (L.) Merr.) that has a negative impact on the market grade of soybeans. The disease is mainly caused by Diaporthe longicolla, along with other Diaporthe species. Screening of soybean seeds health status in Vojvodina Province, Serbia, showed cultural and morphological variability among isolates identified as D. longicolla. With the use of DNA sequences of internal transcribed spacer (ITS1-5.8S-ITS2) region and partial translation elongation factor 1-alpha (EF1-α), the new species was determined. BLAST analysis showed 100% identity with D. pseudolongicolla (syn. D. novem) that was described in this study and its taxonomic revision is discussed. Pathogenicity trial showed that both species, D. longicolla and D. pseudolongicolla, are highly pathogenic on soybean stem and seed, causing 100% of stem wilting and more than 82% of seed decay.Trulež semena je jedna od najvažnijih bolesti soje (Glycine max (L.) Merr.), koja negativno utiče na vrednost soje na tržištu. Najčešće je uzrokuje Diaporthe longicolla, zajedno sa drugim Diaporthe vrstama. Pregledom zdravstvenog stanja semena soje u Vojvodini (Srbija) uočena je morfološka varijabilnost između izolata identifikovanih kao D. longicolla. Upotrebom sekvenci DNK iz ITS regiona (ITS1-5.8S-ITS2) i elongacionog faktora 1-alfa (EF1-α) potvrđeno je prisustvo nove vrste na semenu soje. BLAST analizom je dokazana identičnost od 100% sa D. pseudolongicolla (sin. D. novem) koja je opisana u ovom radu i čija taksonomska revizija se razmatra. Ispitivanja patogenosti su pokazala da su obe vrste, D. longicolla i D. pseudolongicolla, visoko patogene na stablu i semenu soje uzrokujući 100% uvenuće biljaka kao i trulež više od 82% semena
Dietary Fibers and Cardiometabolic Diseases
The high prevalence of cardiovascular disease (CVD) is largely attributable to the contemporary lifestyle that is often sedentary and includes a diet high in saturated fats and sugars and low ingestion of polyunsaturated fatty acids (PUFAs), fruit, vegetables, and fiber. Experimental data from both animals and humans suggest an association between increased dietary fiber (DF) intakes and improved plasma lipid profiles, including reduced low density lipoprotein cholesterol (LDL-C) concentrations. These observations underline that the intake of DF may protect against heart disease and stroke
Phomopsis longicolla β conidia in naturally infected soybean
P. longicolla is primarily known as a soybean seedborne pathogen but it can be isolated from all parts of the plant. Atypical symptoms have been frequently noted on the basal parts of soybean stems of mature plants: slightly sunken lesions with irregular shapes and sizes, bordered by a thin black margin with diffusely distributed pycnidia with α and β conidia. Initially, it was believed that the causal agent was the fungus P. sojae, however morphological characteristics of the isolates suggested that the causal agent was not P. sojae. This study was an attempt to prove that, under certain conditions, P. longicolla produces masses of β conidia. Beta conidia were observed for quite some time in the field, but they were believed to belong to P. sojae, which typically forms this type of conidia. However, after isolation from infected plant parts, the fungus formed colonies and reproductive organs which were identical to the morphological characteristics of P. longicolla described by Hobbs et al. (1985). In other words, we found evidence that the isolated fungus was P. longicolla
Risks associated with Tilletia indica, the newly-listed EU quarantine pathogen, the cause of Karnal bunt of wheat:EC 5. framework project QLK5-1999-01554
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