^ШХР: *https://onlinelibrary.wiley.com/loi/14390434
(https://onlinelibrary.wiley.com/loi/14390434)
^АВТ: Zhongwei Zou; Xuehua Zhang; Fernando W.G.D.
^ЗГЛ: Distribution of mating-type alleles and genetic
variability in field populations of Leptosphaeria maculans in
western Canada [Исследование распределения аллелей,
определяющих типы спаривания, и генетической изменчивости в
полевых популяциях гриба Leptosphaeria maculans, возбудителя
рака стеблей рапса масличного, на западе Канады]
^ВЫХ: Journal of Phytopathology, 2018; Vol.166,N 6. - P.
438-447
^ДАТ: 2018
^ПРМ: Bibliogr.:p.446-447
+Реферат:
^РЕФ: Leptosphaeria maculans is the most important fungal pathogen of canola (Brassica napus, oilseed rape) that causes the devastating stem canker in canola fields of western Canada. The population genetic structure of L. maculans, represented by nine subpopulations from a 6-year period and three different provinces in western Canada, was determined using ten minisatellite markers. Isolates collected at different locations in six consecutive years had an even distribution of MAT1-1 and MAT1-2 across the nine subpopulations. All subpopulations of L. maculans exhibited a moderate gene diversity (H = 0.356-0.585). The majority of the genetic variation occurred within subpopulations. Approximately 8% and 4% of the variations were distributed between sampling year and location, respectively. Genetic distance (FST) results, using analysis of molecular variation (AMOVA), indicated that subpopulation pairing within isolates by year ranged from FST = 0.010 to 0.109, and the location subpopulation ranged from FST = 0.038 to 0.085. Bayesian clustering analyses of multiloci inferred two distinct clusters in all the subpopulations examined. This study indicates a relatively high degree of gene exchange between the different L. maculans isolates. Our results suggest that this can occur in the wide growing areas of canola fields in western Canada. This gene exchange produced different gene allele frequencies and divergence between populations.
aref1
^TRN: 1844834
^ВИД: Статья из книги
^ЯЗК: Английский
+Индексирование:
^РУБ: 68_37_31_37_19
^УДК: 633.853.494:632.488
^ТЕР: РАПС. BRASSICA NAPUS. РАК РАСТЕНИЙ (Cankers).
LEPTOSPHAERIA MACULANS [PHOMA LINGAM]. ТИПЫ СПАРИВАНИЯ
ГРИБОВ. АЛЛЕЛИ (Alleles) [АЛЛЕЛОМОРФЫ]. ГЕНЕТИЧЕСКАЯ
ИЗМЕНЧИВОСТЬ (Genetic variation) [ГЕНЕТИЧЕСКИЕ РАЗЛИЧИЯ;
ГЕНЕТИЧЕСКИЙ ПОЛИМОРФИЗМ; ГЕНОТИПИЧЕСКАЯ ИЗМЕНЧИВОСТЬ;
НАСЛЕДСТВЕННАЯ ИЗМЕНЧИВОСТЬ; ПОЛИМОРФИЗМ ГЕНОВ].
ПОПУЛЯЦИИ. КАНАДА (Canada).
^РТЗ: ASCOMYCOTINA [ASCOMYCETES; АСКОМИЦЕТЫ]. BRASSICA.
BRASSICACEAE [CRUCIFERAE; КАПУСТНЫЕ; КРЕСТОЦВЕТНЫЕ].
DOTHIDEALES. EUMYCOTA. LEPTOSPHAERIA. АМЕРИКА (Americas).
БОЛЕЗНИ РАСТЕНИЙ (Plant diseases). ГЕНЫ (Genes).
ИЗМЕНЧИВОСТЬ [ГОМОЛОГИЧЕСКИЕ РЯДЫ]. ИНФЕКЦИОННЫЕ БОЛЕЗНИ
РАСТЕНИЙ. МАСЛИЧНЫЕ КУЛЬТУРЫ (Oil crops). С-Х КУЛЬТУРЫ.
СЕВЕРНАЯ АМЕРИКА (North America). СТРАНЫ АТЭС. СТРАНЫ
МИРА. ТЕХНИЧЕСКИЕ КУЛЬТУРЫ (Industrial crops).
^КЛС: лептосфериоз.