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Genetics of Ustilago violacea. XXXV. Transposition in Haploid and Diploid Sporidia and Germinating Teliospores


, : Genetics of Ustilago violacea. XXXV. Transposition in Haploid and Diploid Sporidia and Germinating Teliospores. International Journal of Plant Sciences 161(2): 227-231

Ustilago violacea sporidia of the white (w) MAD strain (a-2 w lys-3 ino-1 thi) incubated on minimal medium containing 100 mM KClO3 (potassium chlorate) produced only colonies with the pink phenotype. Sporidia from these colonies retained their pink color on complex medium. Sporidia of the diploid D1 strain (a-1 y nic-1 thi/a-2 w met-1 arg-f Chl70 thi) and of the diploid D2 strain (a-1 y his-1 glu-1 thi/a-2 w lys-3 ino-1 thi) produced pink colonies on complex medium. Streaks of diploid D1 sporidia from the pink colonies were stable on complex medium. In contrast, streaks of diploid D2 sporidia, which are heterozygous for the MAD strain, were unstable, initially producing pink colonies on complex medium but then, with continued incubation, producing white termini. Sporidia from the white termini with diploid morphology continued to yield white colonies. Teliospore colonies from three crosses with the MAD strain as a common parent were uniformly pink or had a pink sector instead of the expected uniformly white colonies or colonies having a white sector. Four of 20 and 13 of 20 teliospore colonies, respectively, from two of the three crosses had both a-1 and a-2 sporidia, and the remaining colonies had only a-1 or only a-2 sporidia. All 40 teliospore colonies from the third cross had only a-1 or only a-2 sporidia. All of these observations indicated that the MAD strain may have two autonomous, transactive transposable elements in different chromosomes and that insertional mutations in at least two haplolethal loci were responsible for the teliospore colonies with only a-1 or only a-2 mating type. Crossing over between a haplolethal locus and the centromere would account for teliospore colonies with both a-1 and a-2 sporidia. Reprinted by permission of the publisher.

US$19.90

PMID: 10777446

DOI: 10.1086/314256


Other references

Murphy, K.R.; Wilson, M.C.; Irvin, C.G.; Glezen, L.S.; Marsh, W.R.; Haslett, C.; Henson, P.M.; Larsen, G.L., 1986: The requirement for polymorphonuclear leukocytes in the late asthmatic response and heightened airways reactivity in an animal model. The antigen-induced late asthmatic response (LAR) and subsequent heightened airways reactivity after this response have been associated with increased airways inflammation. Employing an animal model of the LAR in rabbits previously developed in ou...

Vancampfort, D.; Correll, C.U.; Wampers, M.; Sienaert, P.; Mitchell, A.J.; D.H.rdt, A.; Probst, M.; Scheewe, T.W.; D.H.rt, M., 2016: Metabolic syndrome and metabolic abnormalities in patients with major depressive disorder: a meta-analysis of prevalences and moderating variables. Individuals with depression have an elevated risk of cardiovascular disease (CVD) and metabolic syndrome (MetS) is an important risk factor for CVD. We aimed to clarify the prevalence and correlates of MetS in persons with robustly defined major d...

Seishima, M.; Noma, A.; Yamaguchi, S.; Orii, T.; Muto, Y., 1988: Changes of serum apo A-IV levels in a newborn with chylothorax treated with medium-chain triglyceride milk. Clinica Chimica Acta; International Journal of Clinical Chemistry 176(2): 195-201

Coll, E.E., 1960: Possibilities of ion exchange in the processing of sugarcane and manufacture of sugar. Proc Assoc Southern Agric Workers 57: 197

Lee, J.J.; Natsuizaka, M.; Ohashi, S.; Wong, G.S.; Takaoka, M.; Michaylira, C.Z.; Budo, D.; Tobias, J.W.; Kanai, M.; Shirakawa, Y.; Naomoto, Y.; Klein-Szanto, A.J.P.; Haase, V.H.; Nakagawa, H., 2010: Hypoxia activates the cyclooxygenase-2-prostaglandin E synthase axis. Hypoxia-inducible factors (HIFs), in particular HIF-1alpha, have been implicated in tumor biology. However, HIF target genes in the esophageal tumor microenvironment remain elusive. Gene expression profiling was performed upon hypoxia-exposed non-...

Pickett-Heaps, J., 1976: Cell division in eucaryotic algae. The structure of the mitotic and cytokinetic apparatus of green algae indicates they comprise at least 2 distinct phyletic lines. Dinoflagellates and diatoms have unique spindles which also set them apart from each other and from the other algae s...

Zu-Hong; Qi-Yunyun; Zhao-Wei, 2000: Studies of vascular endothelium function in essential hypertension. Objective and Methods: We used vascular ultrasound to observe relaxing factors derived from the brachial artery endothelium to mediate relaxation of vasculature, the function changed by infusing L-Arg in essential hypertension. Twenty-eight patien...

Choudary, Mr, 1975: Present status and future projections of duck farming in India. Poultry adviser: 8 (5) 9-16

Bent A.L.; Kao H., 2007: Using an improved neighborhood algorithm to model the crust beneath Eastern and Central Canada. Seismological Research Letters 78(1): 166

Albertini, R.J.; Nicklas, J.A.; Fuscoe, J.C.; Skopek, T.R.; Branda, R.F.; O'Neill, J.P., 1993: In vivo mutations in human blood cells: biomarkers for molecular epidemiology. Mutations arising in vivo in recorder genes of human blood cells provide biomarkers for molecular epidemiology by serving as surrogates for cancer-causing genetic changes. Current markers include mutations of the glycophorin-A (GPA) or hemoglobin...