Effects of Fusarium culmorum and water stress on durum wheat in Tunisia

Chekali, S.; Gargouri, Samia; Paulitz, T. C.; Nıcol, J. M.; Rezgui, M.; Nasraoui, B.

doi:10.1016/j.cropro.2011.01.007

Cited by 50 publications

(37 citation statements)

References 23 publications

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“…plant tissue occur near the soil surface can greatly restrict the transmission of water and nutrients from entire root systems. The ultimate effect of both pathogens on maturation of wheat plants is an imposition of drought stress and nutrient unavailability on the foliage and on the maturing ears and grain (6,8,21,28).…”

Section: Discussionmentioning

confidence: 99%

“…reduce the ability of wheat plants to extract water and nutrients from the soil profile (21,42,50,51). Severity of Fusarium crown rot increases with an increasing level of plant water stress, particularly late in the growing season (6,8,28). It is likely that crown rot {F. psetidograminearum) in Australia became exacerbated as P. thomei enhanced plant stress by limiting the acquisition or transport of water and nutrients to the foliage.…”

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confidence: 97%

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Effects of Co-inoculation with Pratylenchus thornei and Fusarium culmorum on Growth and Yield of Winter Wheat

2013

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Hajihassani, A., Smiley, R. W., and Afshar, F. J. 2013. Effects of co-inoculation with Pratylenchus thomei and Fusarium culmorum on growth and yield of winter wheat. Plant Dis. 97:1470-1477.Growth and yield of winter wheat are suppressed by Pratylenchus thomei and by Fusarium culmorum. Many fields in cereal production regions throughout the world are infested by both pathogens. We evaluated effects of one or both pathogens on winter wheat growth, grain yield, and disease parameters at heading and harvest stages over 2 years in inoculated, rainfed pots incubated outdoors. P. thornei nematodes were inoculated at 1, 2, or 4 nematodes/g of soil and F. culmorum was added as colonized millet seed at 0.65 g/kg of soil. At harvest, compared with the noninoculated control, the high rate of P. thornei reduced {P < 0.05) plant height, shoot weight, root weight, and grain yield by 19, 17, 48, and 31%, respectively. F. culmorum alone reduced these parameters by 15, 16, 22, and 22%, respectively. Co-inoculations caused reductions of 27, 38, 61, and 63%, respectively. The reproductive rate of P. thomei was not greatly affected by co-inoculation with F. culmorum. Disease severity ratings at both plant growth stages became amplified as the nematode density was increased, and were much greater in the presence of both pathogens. Effects of co-inoculation on grain yield were slightly greater than predicted by additive effects of the individual pathogens, suggesting a synergistic effect on yield depression.Production of cereals is constrained globally by root diseases caused by plant-parasitic nematodes and plant-pathogenic fungi. Nematodes most commonly associated with economic damage to wheat {Triticum aestivum L.), barley {Hordeum vulgäre L.), and oat {Avena sativa L.) include the root-lesion nematodes Pratyletichus negiectus (Rench) Filipjev Schuurmanns & Stekhoven and P. thornei Sher & Allen, and the cereal cyst nematodes Heterodera avenae WolL, H. filipjevi Madzhidov, and H. latipons Franklin (35,43). Likewise, essentially all temperate cereal-production regions are infested by pathogens causing root diseases such as Fusarium crown rot {Fusarium culmorum (W.G. Sm.) Sacc. and F. pseudograminearum O'Donnell & T. Aoki), common root rot {Bi-polaris sorokiniana (Sacc.) Shoemaker), Rhizoctonia root rot {Rhi-zoctonia solani J.G. Ktibn AG-8), Pythium root rot (multiple species of Pythium Pringsheim), and take-all {Gaeumannomyces graminis var. tritici J. Walker) (39). The international literature is expansive for cereal diseases caused by these nematodes and fungi. However, most reports are focused upon the biology and management of a single causal agent. Reports of associations between species of nematodes, species of fungi, or of nematodes and fungi are much less common.Interactions between root-invading nematodes and root-infecting fungi have been known for more than a century (2). However, most reviews and individual reports have addressed interactions of nematodes with vascular wilt fungi such as Verticillium dahliae and F. oxyspor...

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 97%

Effects of Co-inoculation with Pratylenchus thornei and Fusarium culmorum on Growth and Yield of Winter Wheat

2013

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“…FRR by F. culmorum is severe when wheat is grown in warm areas, where the host plant is more subject to water stress (Bateman, ; Cariddi and Catalano, ; Chekali et al ., ; Colhoun et al ., ; Inglis and Cook, ; Papendick and Cook, ; Parry, ; Prew et al ., ). Drought conditions increase the susceptibility of the plant rather than the virulence of the fungus.…”

Section: Epidemiologymentioning

confidence: 99%

Fusarium culmorum: causal agent of foot and root rot and head blight on wheat

Scherm

Balmas

Spanu

et al. 2012

Molecular Plant Pathology

282

211

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“…Fusarium culmorum and F. graminearum are, along with F. pseudograminearum, the predominant causal agents of fusarium crown and root rot (FCR) in wheat (Burgess et al, 1993;Smiley & Patterson, 1996;Paulitz et al, 2002;Chekali et al, 2011). In dry areas, like the Pacific Northwest of the United States, Australia and the Middle East, F. culmorum may cause severe FCR resulting in significant yield losses (Cook, 1968;Fouly et al, 1996;Smiley & Patterson, 1996;Wildermuth et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Trichothecene production is detrimental to early root colonization by Fusarium culmorum and F. graminearum in fusarium crown and root rot of wheat

et al. 2018

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Fusarium culmorum (Fc) and F. graminearum (Fg) belong to the predominant causal agents of fusarium crown and root rot (FCR) in wheat. While many studies have been done to investigate crown rot, including stem base infection, root colonization and mycotoxin production associated with root rot is not well understood. In this study the impact of mycotoxins on the colonization of wheat roots and stem bases was analysed by using Fc and Fg isolates that varied in both quantity and types of trichothecenes they produce. Seedling inoculations in growth chambers with a high deoxynivalenol (DON)‐ and 3‐acetyldeoxynivalenol (3ADON)‐producing isolate led to more severe symptoms and 20‐times greater colonization of the stem base, as measured by Fc DNA accumulation, than isolates that produced less DON/3ADON. In contrast to stem base colonization, in vitro inoculations of roots with a Tri5 deletion mutant deficient in Fg trichothecene production led to three‐times higher colonization than the wildtype. Furthermore, an Fc isolate that produced low levels of zearalenone resulted in twice the level of colonization of a high DON/3ADON‐producing isolate included in the study. When root inoculation with a low DON/3ADON‐producing Fc isolate was supplemented with exogenous DON, DON production decreased by more than half per unit weight of Fc DNA, and root colonization doubled compared to the untreated control. Therefore, in contrast to its potential role as an aggressiveness factor in stem base infection, trichothecene production by Fc and Fg is detrimental to the early stages of wheat root colonization in FCR.

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Effects of Fusarium culmorum and water stress on durum wheat in Tunisia

Cited by 50 publications

References 23 publications

Effects of Co-inoculation with Pratylenchus thornei and Fusarium culmorum on Growth and Yield of Winter Wheat

Effects of Co-inoculation with Pratylenchus thornei and Fusarium culmorum on Growth and Yield of Winter Wheat

Fusarium culmorum: causal agent of foot and root rot and head blight on wheat

Trichothecene production is detrimental to early root colonization by Fusarium culmorum and F. graminearum in fusarium crown and root rot of wheat

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