Person: Nicol, J.M.
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Nicol
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J.M.
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Nicol, J.M.
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- Optimization of Real Time Quantitative PCR (Q-PCR) for Fusarium pseudograminearum and F. culmorum on wheat(American Phytopathological Society, 2009) Poole, G.; Ozdemir, F.; Nydam, S.D.; Schroeder, K.L.; Paulitz, T.C.; Nicol, J.M.; Campbell, K.G.
Publication - Screening for resistance in local and global wheat germplasm against Fusarium culmorum and F. pseudograminearum, causal agents of crown rot in Tunisia(American Phytopathological Society, 2009) Gargouri, S.; M’tat, I.; Kammoun, L.G.; Zid, M.; Chekali, S.; Nicol, J.M.; Gharbi, M.S.
Publication - Root and crown rot fungi associated with spring, facultative, and winter wheat in Turkey(American Phytopathological Society (APS), 2008) Tunali, B.; Nicol, J.M.; Hodson, D.P.; Uckun, Z.; Buyuk, O.; Erdurmus, D.; Hekimhan, H.; Aktas, H.; Akbudak, M.A.; Bagci, A.The objective of this study was to determine the distribution frequency of the fungi associated with wheat (Triticum aestivum) crowns and roots in cereal producing areas of Turkey through a targeted survey of 518 commercial fields over a 2-year period. More than 26% of the fields had one or more of the fungal species commonly reported as part of the dryland root rot complex, Fusarium culmorum (14%) > Bipolaris sorokiniana (10%) > F. pseudograminearum (2%). The fungi considered to be part of the high rainfall root rot complex were found at very low frequencies: 2% for Gaeumannomyces graminis and 3% for Pythium spp. Species of Rhizoctonia were found in 22% of the fields. Several Fusarium species considered to be less or nonpathogenic to cereals were also found in high frequencies at 11% (F. oxysporum, F. chlamydosporum), 10% (F. sporotrichioides), and 8% (F. avenaceum and F. solani). The mostly random distribution of cereal root-rotting species across the survey area suggests the fungi are not distributed in any distinct agroecological relationship. As a result, the relative economic importance of a given species on wheat will be determined by a number of factors, such as their fungal pathogenicity, host susceptibility/tolerance, and the seasonal conditions. Results from this study suggest that there are a wide range of fungal species associated with root and crown tissues of wheat.
Publication - Pathogenicity of Turkish crown and head scab isolates on stem bases on winter wheat under greenhouse conditions(Korean Society of Plant Pathology, 2006) Tunali, B.; Nicol, J.M.; Erol, Y.; Altiparmak, G.Fifty one Fusarium isolates from crown tissue across 32 locations of Central Anatolian plateau. The 51 isolates which represented 13 different species were assessed for Fusarium pathogenicity against the winter wheat Pehlivan. Virulence ratings were variable with F. culmorum, F. pseudograminearum and F. graminearum causing the greatest severity and reduced plant weight. A strong negative correlation between plant weight and disease severity, other species including F. subglutinans, F. oxysporum, F. equiseti, F. acuminatum, F. solani, F. verticilloides were weak pathogens on Pehlivan and under these conditions would not be considered as pathogens.
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