Plant-parasitic nematodes on cereals in northern Kazakhstan

Dababat, Abdelfattah A.; İmren, Mustafa; Pridannikov, Mikhail V.; Özer, Göksel; Zhapayev, Rauan; Mokrını, Fouad; Otemissova, Ainur; Yerimbetova, Aigerim; Morgounov, Alexey

doi:10.1007/s41348-020-00306-0

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…There is an extensive variation in morphological characters within the H. avenae group. Table 1, a compilation of characters commonly used for species identification, further emphasizes the heterogeneity of the group and supports the view that the H. avenae group is not monophyletic [23]. In this study, we used both technique morphological techniques to detect the Heterodera avenae from Iraq.…”

Section: Resultssupporting

confidence: 59%

“…The results indicated in Table (1) btained when taking biometric measurements of the vesicular nematodes of the studied model Paratype and comparing them with the original Holotype, where all measurements were taken in mµ and according to the measurements of de man 1884 equation and the number of nematodes that were measured was 10, the total body length of the nematode was 457. ) and tail end area ( hyalin) 41( 35-45), length of spear 27( 24-28), DGO was (5-6), as for the width of the body BW (20)(21)(22)(23)(24). It was confirmed by [19] there are some important characteristics in diagnosing nematodes H. avena from the rest of the other species the length of the tail ranges from (60-70), and the length of the spear is (26-28).…”

Section: Resultsmentioning

confidence: 99%

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Morphological Diagnosis of Heterodera avenae in Iraq and Their Pathogenicity on Three Wheat Varieties

Aldarraji,

Alwaily

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Wheat is one of the dominant crops in many countries being used by human and livestock. Cereal Cyst nematodes one of very important pest that reduce yield up to 50% worldwide. In this study, the survey was conducted across seven Governorate the Heterodera type appeared in three of them (Misan, Baghdad, Al-Najaf) chosen based from their wide area of small grain production and geographical position in 2020. Cyst were identified by morphological methods. Species identification has been validated by molecular method. As a result of the study, that the wheat variety Buhooth 22 was less affected by the infection and the infection rate was 40% and a significant difference was recorded between it and the other two varieties, Ibaa 99 and Rashid. The infection rate was high and reached 53.3 and 60% respectively. This is first study in Iraq in terms of morphometric nematode identification in case of Cyst nematodes. These results can be of signifigance for improving strategies to control Cereal Cyst nematode affecting wheat production in Iraq.

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Section: Resultssupporting

confidence: 59%

Section: Resultsmentioning

confidence: 99%

Morphological Diagnosis of Heterodera avenae in Iraq and Their Pathogenicity on Three Wheat Varieties

Aldarraji,

Alwaily

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Heterodera filipjevi (the rye cyst nematode) Heterodera filipjevi has been reported in eastern and northern Europe, the former USSR (Balakhnina, 1989), in Turkey where it is the most dominant and widespread species of CCN (Rumpenhorst et al, 1996), the Mediterranean region, in Central and West Asia and North America (Smiley et al, 2017). In a very recent survey were conducted in Azerbaijan and Kazakhstan, H. filipjevi was found to be the dominant species in both countries (Dababat et al, 2019c(Dababat et al, , 2020. Heterodera filipjevi is probably the major destructive nematode in wheat and barley growing areas, particularly in semiarid areas where nematode damage increases under drought stress conditions (Rivoal & Cook, 1993;Nicol, 2002).…”

Section: Cereal Cyst Nematodes (Ccns)mentioning

confidence: 99%

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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“…Recent studies devoted to studying B. sorokiniana in cereal diseases were carried out to reveal the population structure of leaf pathogens of spring wheat in Northern Kazakhstan [ 11 ] and the host compatibility of barley varieties to the pathogens of leaf spotting based on the artificial infectious background [ 6 ]. Most recently, the International Maize and Wheat Improvement Center (CIMMYT) conducted two intensive surveys on soilborne diseases in cereals in main cereal-growing areas in Kazakhstan [ 5 , 12 ]. Their results showed that cereal-growing areas were severely infected with the soilborne disease and that B. sorokiniana was the most prevalent pathogen.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Spot Blotch in Spring Barley Caused by Bipolaris sorokiniana Shoem. in South-Eastern Kazakhstan

Dutbayev

Kuldybayev

Daugaliyeva

et al. 2022

The Scientific World Journal

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In Kazakhstan, barley (Hordeum vulgare L.) is the second most important cereal crop after wheat, with an annual production of approximately 1.9 million tons. The study aimed to characterize Bipolaris sorokiniana isolates obtained from barley fields surveyed. A total of 21 diseased leaves showing spot blotch symptoms were collected from experimental plots located close to the Kazakh Research Institute of Agriculture and Crop Production, where the spring barley Arna cultivar was planted in June 2020. The overall strategy for control of spring barley blotch in the Almaty region of Kazakhstan should include the determination of the aggressiveness of the pathogen isolates to better understand the biology of the diseases and ultimately proper control strategy. Pathogenicity of B. sorokiniana isolates was made on barley seedlings in vitro. Inoculated seedlings showed clear symptoms of B. sorokiniana, and therefore, Koch’s postulates were fulfilled by reisolating the pathogen from artificially inoculated seedlings and identifying it based on standard morphology criteria. Further investigation is needed to understand the impact of B. sorokiniana on barley production in Kazakhstan.

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Plant-parasitic nematodes on cereals in northern Kazakhstan

Cited by 8 publications

References 21 publications

Morphological Diagnosis of Heterodera avenae in Iraq and Their Pathogenicity on Three Wheat Varieties

Morphological Diagnosis of Heterodera avenae in Iraq and Their Pathogenicity on Three Wheat Varieties

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

Occurrence of Spot Blotch in Spring Barley Caused by Bipolaris sorokiniana Shoem. in South-Eastern Kazakhstan

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