Pathogenic complexity of septoria spot disease of wheat in northern Kazakhstan

Babkenova, S. A.; Babkenov, Adylkhan; Pakholkova, E.V.; Канафин, Б

doi:10.14719/pst.2020.7.4.798

Cited by 6 publications

(12 citation statements)

References 4 publications

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“…Judging by restoration of the resistance of some lines and reduction in the proportion of susceptible ones in 2018-2019, some pathogen strains were eliminated from the population. It had been previously shown that P. nodorum prevailed in Northern-eastern Kazakhstan in 1994-2011 [25], but in 2018-2019, it was Z. tritici that dominated in Northern Kazakhstan [52]. These confirms our conclusion that the increased harmfulness of Septoria leaf blotch in the Omsk region was caused by changes in Z. tritici population.…”

Section: Discussionsupporting

confidence: 89%

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The Use of Genetic Material of Tall Wheatgrass to Protect Common Wheat from Septoria Blotch in Western Siberia

2023

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The Septoria blotch is one of the most economically harmful diseases of common wheat in Russia and the world. The disease is mainly caused by two pathogen species: Zymoseptoria tritici that damages the leaves, and Parastagonospora nodorum that strikes the leaves and ears. Resistance genes of the alien relatives are traditionally used for genetic defense of cultivars. The aims of the research were to study the resistance of the tall wheatgrass Thinopyrum ponticum (Podp.) Z.-W. Liu and R.-C. Wang and perspective introgressive lines of spring common wheat with its genetic material to Septoria blotch, and to characterize their agronomical properties to be used in breeding programs in Western Siberia. The studies were carried out in 2015–2019 in the field conditions of the southern forest-steppe (Omsk, Russia) on a natural infection background and according to standard methods. The Septoria diseases developed on the wheat in the period of milk-wax ripeness, independently of humid or dry weather conditions. In 2016, a sharp increase in leaf lesion was noted, probably associated with changes in the Z. tritici population. In 2017, the ratio of Z. tritici and P. nodorum was similar, and in 2019 Z. tritici prevailed. During the research, the lines that combined leaf and ear resistance to damage with high yield and grain quality were selected.

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Section: Discussionsupporting

confidence: 89%

“…The studies of Septoria blotch development in Northern Kazakhstan showed that all commercial wheat cultivars were susceptible to the disease [52]. The accessions of Th.…”

Section: Discussionmentioning

confidence: 99%

The Use of Genetic Material of Tall Wheatgrass to Protect Common Wheat from Septoria Blotch in Western Siberia

2023

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“…During the two-year study of species diversity of Septoria spot pathogens, Z. tritici was predominant, followed by S. nodorum and S. avenae f. sp. triticea [ 5 ]. This study has significance for future wheat breeding in Kazakhstan.…”

Section: Discussionmentioning

confidence: 99%

Identification of Wheat Septoria tritici Resistance Genes in Wheat Germplasm Using Molecular Markers

Kokhmetova,

Bolatbekova,

Zeleneva

et al. 2024

Plants

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Zymoseptoria tritici (Z. tritici) is the main threat to global food security; it is a fungal disease that presents one of the most serious threats to wheat crops, causing severe yield losses worldwide, including in Kazakhstan. The pathogen leads to crop losses reaching from 15 to 50%. The objectives of this study were to (1) evaluate a wheat collection for Z. tritici resistance during the adult plant and seedling growth stages, (2) identify the sources of resistance genes that provide resistance to Z. tritici using molecular markers linked to Stb genes, and (3) identify potentially useful resistant wheat genotypes among cultivars and advanced breeding lines. This study evaluated 60 winter and spring wheat genotypes for Z. tritici resistance. According to the field reactions, 22 entries (35.7%) showed ≤10% disease severity in both years. The resistant reaction to a mix of Z. tritici isolates in the seedling stage was associated with adult plant resistance to disease in four wheat entries. The resistance of Rosinka 3 was due to the presence of Stb8; Omskaya 18 showed an immune reaction in the field and a moderately susceptible reaction in the seedling stage, possibly provided by a combination of the Stb7 and Stb2 genes. The high resistance in both the adult and seedling stages of Omskaya 29 and KR11-03 was due to the Stb4 and Stb2 genes and, possibly, due to the presence of unknown genes. A linked marker analysis revealed the presence of several Stb genes. The proportion of wheat entries with Stb genes was quite high at twenty-seven of the genotypes tested (45.0%), including four from Kazakhstan, nine from Russia, nine from the CIMMYT-ICARDA-IWWIP program, and five from the CIMMYT-SEPTMON nursery. Among the sixty entries, ten (16.7%) carried the resistance genes Stb2 and Stb8, and the gene Stb4 was found in seven cultivars (11.6%). Marker-assisted selection can be efficiently applied to develop wheat cultivars with effective Stb gene combinations that would directly assist in developing durable resistance in Kazakhstan. Resistant genotypes could also be used as improved parents in crossing programs to develop new wheat cultivars.

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“…Annually, on average, about 13.0 million tons of grain are produced in Kazakhstan. The average grain yield is 1.1 tons per hectare (Babkenova et al, 2020). Septoria leaf blotch is one of the most destructive fungal pathogen of wheat in all wheat-producing areas (Toropova et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The destruction of chloroplasts and the shrink of the assimilation area of the leaf lead to the reduction of photosynthesis activity and the diminution of respiratory activity (Melkumov, Brazhnikova, 2018). Yield losses occur mainly as a result of grain content decrease within the single ear and decrease of grain weight in general (Babkenova et al, 2020). Septoria tritici and Stagonospora (Septoria) nodorum cause significant crop loss and severely reduce grain quality.…”

Section: Introductionmentioning

confidence: 99%

The septoria leaf blotch of wheat in Central Kazakhstan: prognosis, evaluation and monitoring with remotely sensed data

Malakhov

2021

jgier

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Fungal diseases represent a widely spread natural phenomenon affecting many of wild and domesticated plants. In nature, all plant species forms plant communities of a mixed character, and the spatial pattern of dominant species is usually irregular and spotted. Some species are impregnable to a certain infection, which provides a kind of natural barrier to the infection spread within the natural community. Under the agricultural environment, when the single plant species may occupy a huge area, the species-specific parasite takes a great advantage to develop focal outbreaks and fast spreading of the infection within the area. The concentration of vulnerable plants and the absence of natural barriers within the agricultural areas provokes outbreaks of fungal diseases, that may have highly harmful consequences and result in significant yield losses. One of the purposes of the satellite optical data is an operative, cost-effective diagnostic and, in combination with climatic datasets and crop rotation information, a prognosis of fungal disease appearance and severity. In this paper, we describe the system of prognostic and monitoring measures to control the fungal diseases of wheat in Central Kazakhstan with special attention to septoria leaf blotch. The prognostic procedure provides a map of the probability of septoria leaf blotch appearance. The prognosis takes into consideration the combination of three main variables: the model of ecological niche for Septoria, the presence of wheat residue, and Vegetation Condition Index counted for the late spring (May) of the current year. The new spectral index, introduced in this paper, is the core component of monitoring activity. The index is sensitive to septoria leaf blotch severity at middle to late (stages 8-11, accordingly Feekes growth stages) periods of wheat development. Several other indices (RETA, VSDI, vegetation indices) may be of help in providing information on the spatial unevenness of wheat crops that may indicate the presence of fungal infection.

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Pathogenic complexity of septoria spot disease of wheat in northern Kazakhstan

Cited by 6 publications

References 4 publications

The Use of Genetic Material of Tall Wheatgrass to Protect Common Wheat from Septoria Blotch in Western Siberia

The Use of Genetic Material of Tall Wheatgrass to Protect Common Wheat from Septoria Blotch in Western Siberia

Identification of Wheat Septoria tritici Resistance Genes in Wheat Germplasm Using Molecular Markers

The septoria leaf blotch of wheat in Central Kazakhstan: prognosis, evaluation and monitoring with remotely sensed data

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