Variation in virulence of cereal cyst nematode populations from North Africa and Asia

Mokabli, A.; Valette, Sylvie; Gauthier, Jean-Pierre; Rivoal, Roger

doi:10.1163/156854102760290491

Cited by 29 publications

(8 citation statements)

References 6 publications

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“…Heterodera avenae is found in temperate wheatproducing regions throughout the world, including North and South Africa (Mokabli et al, 2002), Australia (Kort, 1972), Europe (Sikora, 1988;Rivoal and Cook, 1993), the Middle East (Ibrahim et al, 1999), and North America (Smiley, 1994). The yield reduction of wheat caused by H. avenae is 15%-20% in Pakistan (Maqbool, 1988), 40%-90% in Saudi Arabia (Ibrahim et al, 1999), and 23%-50% in Australia (Nicol et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effect of cereal cyst nematode Heterodera avenae (Tylenchida: Heteroderidae) on yield of some spring wheat varieties in Adana Province, Turkey

İmren¹,

Elekcioğlu²

2014

Turk J Agric For

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Cereal cyst nematode Heterodera avenae is found predominantly in the spring wheat-growing areas in Adana Province in the eastern Mediterranean region of Turkey. The impact of H. avenae on wheat yield has been observed but not quantified. This study was conducted to determine the effect of H. avenae on the yield of 6 wheat varieties in the 2011/2012 and 2012/2013 growing seasons in the naturally infested fields of Adana. According to our results, H. avenae significantly suppressed grain yield of the wheat varieties, ranging from 4.3% to 25.7%. Negative or positive linear regressions between the reproduction factor of H. avenae and grain yield of the wheat cultivars depended on the variety. Regression analysis of the data revealed that reproduction factors of H. avenae were positively correlated with grain yield in cultivars Adana-99, Ceyhan-99, and Silverstar, whereas reproduction factors were negatively correlated with the Karatopak, Osmaniyem, and Seri-82 cultivars.

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Section: Introductionmentioning

confidence: 99%

Effect of cereal cyst nematode Heterodera avenae (Tylenchida: Heteroderidae) on yield of some spring wheat varieties in Adana Province, Turkey

İmren¹,

Elekcioğlu²

2014

Turk J Agric For

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“…The presence of this nematode was first discovered and reported by Scotto La Massese (1961) and by Lamberti et al (1975). However, recent studies have reported that this species was detected in various cereal growing areas of Algeria (Mokabli et al 2001;Valette et al 2002;Tirchi et al 2016). Heterodera filipjevi appears mostly in Mediterranean and European countries (Rumpenhorst et al 2003;Dababat 2019).…”

Section: Introductionmentioning

confidence: 93%

Journal of Plant Protection Research

Smaha,

Mokrini,

İmren

et al. 2019

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Cereal cyst nematodes (Heterodera spp.) are distributed globally and cause severe production losses of small grain cereals. To investigate the occurrence of cereal cyst nematodes in wheat-growing areas of Algeria, a survey was conducted and 27 cereal cyst nematode populations were collected. The populations were initially identified based on their morphological and morphometric characters, followed by molecular methods using speciesspecific primers, complemented by ITS-rDNA sequences. The morphological and morphometric features of second-stage juveniles (J2s) and cysts supported the presence of three Heterodera species: H. avenae, H. filipjevi and H. hordecalis. All morphological values of these distinct populations were very similar to those previously described for these species. Using species-specific primers for H. avenae and H. filipjevi, the specific bands of 109 bp and 646 bp confirmed the morphological identification of both species, respectively. In addition, the internal transcribed spacer (ITS) regions were sequenced to study the diversity of the 27 populations. These sequences were compared with those of Heterodera species available in the GenBank database (www.ncbi.nlm.nih.gov) and re-confirmed the identity of the species. Nineteen sequences of ITS-rDNA were similar (99-100%) to the sequences of H. avenae published in the GenBank, six sequences were similar (99-100%) to H. hordecalis, and two were similar (98-99%) to H. filipjevi. The results of this study are of great value to breeding programs and extension services, where they will contribute to the design of control measures to keep damaging nematodes in check.

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“…Different studies showed that the Cre1 locus is relatively more responsive to H. avenae population from Europe, North America and North Africa (Table 2) whereas this locus is less responsive to Australian and Asian populations of CCNs (Rivoal et al, 2001;Mokabli et al, 2002). In addition to different responsiveness of Cre loci in different countries and continents, the effectiveness of Cre genes varies in response to different species of CCNs (Ali et al, 2019).…”

Section: Source Of Resistance To Cereal Cyst Nematodes (Ccn)mentioning

confidence: 98%

Genetic Resistance of Wheat towards Plant-Parasitic Nematodes: Current Status and Future Prospects

et al. 2021

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Plant-parasitic nematodes (PPNs) are one of the major biotic factors that cause significant yield losses in wheat-growing areas worldwide. The major PPN groups causing significant economic losses in wheat quantity and quality are cereal cyst nematodes (CCNs) and root-lesion nematodes (RLNs). Based on their wide distribution, pathogenicity, high occurrence in wheat cultivated areas, they are considered major threats to the global food supply. The economic loss caused by these destructive pathogens ranges from 10 to 100% depending on different agro-ecological conditions such as drought, heat stress, and cold stress. Multidisciplinary management practices are being implemented to manage cereal nematodes (CNs) that range from cultural to molecular strategies. Integration of wheat resistant varieties with appropriate agronomic practices is recognized as the safest and most practical, effective, and applicable management strategy. Nine resistance genes (Cre1-Cre9) to CCN are well-documented in the literature. CreR, CreV and CreZ genes are relatively recently characterized from wheat and confer resistance to CCNs. On the other hand, Rlnn1 is the only resistance gene characterized from wheat that is known to confer resistance towards RLNs. However, breeding for resistance to PPN has numerous challenges that originate from the narrow genetic diversity and difficulty in the process of transferring resistance gene(s) from the source to the target variety. A unique opportunity for wheat genetic improvement was provided due to the availability of genomic resources and the wheat worldwide germplasm collection which includes wild wheat germplasm. Moreover, the presence of several genome-wide association studies and genome editing technologies could also help for further improvement to enhance CNs resistance in wheat. This article provides the latest information regarding the progress made in the identification and characterization of resistance genes from different sources and its utility against both CCNs and RLNs, which will attract the attention of the scientific community and other relevant stakeholders.

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Variation in virulence of cereal cyst nematode populations from North Africa and Asia

Cited by 29 publications

References 6 publications

Effect of cereal cyst nematode Heterodera avenae (Tylenchida: Heteroderidae) on yield of some spring wheat varieties in Adana Province, Turkey

Effect of cereal cyst nematode Heterodera avenae (Tylenchida: Heteroderidae) on yield of some spring wheat varieties in Adana Province, Turkey

Journal of Plant Protection Research

Genetic Resistance of Wheat towards Plant-Parasitic Nematodes: Current Status and Future Prospects

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