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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- The CIMMYT Australia ICARDA Germplasm Evaluation concept: a model for international cooperation and impact(Frontiers Media S.A., 2024) Trethowan, R.M.; Nicol, J.M.; Singh, A.; Singh, R.P.; Tadesse, W.; Velu, G.; Crespo-Herrera, L.A.; Cullis, B.R.; Mazur, L.; Dieters, M.J.J.; Micallef, S.; Farrell, T.; Wilson, R.E.; Mathews, K.
Publication - Influence of thiabendazole seed treatment on the integrated control of Heterodera filipjevi on six wheat genotypes with different levels of genetic resistance under controlled conditions(Organization of Nematologists of Tropical America, 2014) Dababat, A.A.; Pariyar, S.R.; Nicol, J.M.; Erginbas Orakci, G.; Goll, M.; Watrin, C.; Duveiller, E.; Braun, H.J.; Cabrera, J.A.; Sikora, R.A.
Publication - Evaluation of inoculation methods to assay wheat for resistance to Fusarium crown rot(American Phytopathological Society, 2009) Poole, G.; Paulitz, T.C.; Nicol, J.M.; Erginbas Orakci, G.; Campbell, K.; Smiley, R.R.
Publication - 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 - Report: ATSE crawford fund - CIMMYT master class in soil borne pathogens of cereals(CIMMYT, 2003) Nicol, J.M.The course on Soil Borne Pathogens of Cereals was suggested by Dr Julie Nicol, CIMMYT Pathologist, who is based in the CIMMYT Regional office in Turkey. Dr Hans Braun (Head of this regional office) has been well aware of these problems in the region of West Asia, North Africa, Central Asia, India and China for many years and the need to both train scientists and form strong cohesive networks to enable transfer of technical knowledge, breeding material and form research collaborations. This course was focussed on those soil borne pathogens of cereals with special emphasis on wheat. These pathogens are implicated in causing losses to cereals particularly in marginal environments under either rain-fed agriculture or limited irrigation practices. Australia is a leading country in research on these problems and hence three key teaching staff were bought to Turkey from Australia to teach the course. Dr Albert Rivora (Australian Cereal Root Pathologist and Coordinator of the South Australian ATSE Crawford Fund) was a key initiator for this course to occur in the region. The regional experiences and expertise of both Turkish and French staff offered a complementary set of information and exchange for the participants and also the teaching staff.
Publication - Improved methodology for resistance screening in spring wheat against the root lesion nematode, Pratylenchus thornei (Sher et Allen) (Tylenchida: Pratylenchidae)(Entomological Society Turkey, Ege University, 2012) Toktay, H.; Imren, M.; Nicol, J.M.; Dababat, A.A.; Elekcioglu, I.H.The root lesion nematode, Pratylenchus thornei (Sher et Allen) is a polyphagous and economically important nematode in wheat production systems, particularly in rainfed environments. Chemical management of this nematode is not economically or environmentally sound, leaving cultural practices like crop rotation as the most widely accepted option. Long-term control is best achieved in established wheat monoculture systems through genetic improvement, which provides both economic and environmental benefits to the growers. Intensive screening under controlled conditions can facilitate and accelerate the identification of resistance and its subsequent deployment in commercial wheat cultivars. In this study, a number of variables were assessed to optimize P. thornei screening, including initial nematode density, soil type, container size, reference cultivars, harvest time and watering regime with perlite. Growth room experiments showed clear separation between the resistant and susceptible cultivars, using sandy growth edium (70:29:1 sand, field soil and organic matter), small container (15 mm diameter x 100 mm in long), inoculation density with 400 individuals per plant, 9 week growing period and bottom perlite irrigation system.
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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