Efficacy of wheat genotypes and Stb resistance genes against Iranian isolates of Zymoseptoria tritici

Makhdoomi, Amin; Mehrabi, Rahim; Khodarahmi, Manoochehr; Abrinbana, Masoud

doi:10.1007/s10327-014-0565-8

Cited by 17 publications

(26 citation statements)

References 31 publications

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“…High broad-sense heritability suggested that the resistance variation is heritable, which are in agreement with previous studies on septoria resistance in different wheat germplasm in both seedling Among the isolates, IPO323 showed the highest number of incompatible interactions (n=35), while IPO02166 (originated from Iran) showed a high level of aggressiveness on wheat genotypes. Most of the wheat differentials possessing known Stb genes were susceptible to most of Z. tritici isolates, which are in agreement with previous reports for the ineffectiveness of known Stb genes against Z. tritici populations (Abrinbana et al 2012;Makhdoomi et al 2015;Mahboubi et al 2020). Interestingly, two genotypes (ER-M-92-20 and IPK40740) and four differentials (Kavkaz-K4500, Arina, Riband and M3) were resistant to all isolates.…”

Section: Discussionsupporting

confidence: 91%

“…This genotype contains Stb16 and Stb17 (Tabib Ghaffary et al 2012;Mahboubi et al 2020). Therefore, it can be concluded that this gene still is effective against STB, which is consistent with previous (Hosseinnezhad et al 2014;Makhdoomi et al 2015). The resistant genotypes identi ed in this study are likely novel sources of resistance, which can be used in breeding programs for the development of modern wheat cultivars.…”

Section: Discussionsupporting

confidence: 88%

“…Phenotypic evaluation of wheat genotypes against 10 Z. tritici isolates (Table 1) was described in detail by Mahbubi et al (2020). Phenotyping of wheat genotypes was done under greenhouse conditions at the seedling stage as described previously (Abrinbana et al 2012;Makhdoomi et al 2015). Brie y, STB isolates were pre-cultured in yeast-extract glucose (YG) liquid medium, and then these pre-cultures were used to inoculate 100 ml YG media per isolate.…”

Section: Plant Materials and Evaluation Of Stb Infectionmentioning

confidence: 99%

“…Although the qualitative resistance is effective and important for controlling STB, the rapid evolution and adaptation of Z.tritici populations result in overcoming resistance in most improved cultivars (Cowger et al 2000;Stukenbruke et al 2007;Makhdoomi et al 2015;Muqaddasi et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Genome-wide association mapping in wheat reveals novel QTLs and potential candidate genes involved in resistance to septoria tritici blotch

Mahboubi

Talebi

Mehrabi

et al. 2021

Preprint

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Septoria tritici blotch (STB) caused by Zymoseptoria tritici is one of the most important foliar diseases of wheat that can lead to significant yield losses worldwide. In this study, we analyzed STB resistance pattern of 185 diverse bread wheat genotypes at the seedling stage in order to confirm known resistance genes or identifying novel putative QTLs conferring resistance to STB. The phenotyping data using 10 Z. tritici isolates showed that large genetic variance exists for STB infection in wheat germplasm. Genome-wide association mapping (GWAS) using CMLM algorithm identified 37 quantitative-trait loci (QTL) for resistance to STB on 17 chromosomes. Most of QTLs overlapped with known STB resistance genes, while GWAS scan revealed several newly identified QTLs on chromosomes 4A, 5D and 6D for resistance to STB. Genome annotation of marker-trait association (MTA) against wheat reference genome revealed 29 MTAs corresponded to the putative genes, which their functional descriptions identifiers included diseases resistance proteins in plants. These MTAs and novel QTLs associated with STB resistance found here, can be used in future wheat breeding programs to recombine different loci for durable resistance to STB.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 88%

Section: Plant Materials and Evaluation Of Stb Infectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Genome-wide association mapping in wheat reveals novel QTLs and potential candidate genes involved in resistance to septoria tritici blotch

Mahboubi

Talebi

Mehrabi

et al. 2021

Preprint

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“…The 48 isolates were phenotyped on the highly susceptible bread wheat cultivar 'Taichung 29', commonly used as a susceptible check cultivar in the screening of wheat germplasm (Makhdoomi et al, 2015) or in tests of global panels of Z. tritici isolates (Zhong et al, 2017).…”

Section: Plant Materialsmentioning

confidence: 99%

Differential tolerance of Zymoseptoria tritici to altered optimal moisture conditions during the early stages of wheat infection

Boixel

Gélisse

Marcel

et al. 2019

Preprint

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Foliar plant pathogens require liquid or vapour water for at least part of their development, but their response and adaptive tolerance to moisture conditions has been much less studied than other meteorological factors to date. Here, we examine the impact on the wheat-Zymoseptoria tritici interaction of altering optimal moisture conditions conducive to infection.We assessed the responses in planta of 48 Z. tritici strains collected in two climatologically distinct locations (Ireland and Israel) to four high moisture regimes differing in the duration of uninterrupted exposure to saturated relative humidity (100% RH) during the first three days of infection. Individual-and population-level moisture reaction norms expressing how the sporulating area of a lesion change with the RH conditions were established based on visual assessments of lesion development at 14, 17 and 20 days post-inoculation (dpi). Our findings highlighted: (i) a critical time-dependent effect on lesion development of interrupted periods of exposure to 100% RH during these earliest infection stages; (ii) a marked interindividual variation in the sensitivity to RH conditions both in terms of strain average moisture response and plasticity; (iii) a higher tolerance at 14 dpi of the Israeli population to interrupted periods of exposure to 100% RH. By indicating that sensitivity to sub-optimal moisture conditions may vary greatly between Z. tritici individuals and populations, this study provides the first evidence of moisture adaptation signature in a fungal plant pathogen. This suggests that understanding such variation will be critical to predict their response to changing climatic conditions.

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Resistance of wheat genotypes to Mycosphaerella graminicola isolates at seedling stage under greenhouse conditions

Bakhshi,

Ahmadi,

Sarbarzeh

et al. 2023

Food Science & Nutrition

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One of the most devastating foliar diseases of wheat worldwide is Septoria leaf blotch (STB), caused by Mycosphaerella graminicola (asexual stage/Anamorph: Septoria tritici) which has been recently intensified in some regions in Iran. In this study, 49 wheat genotypes and 20 wheat differential genotypes were evaluated for their reaction to infection by six isolates of M. graminicola collected from infected fields during 2016–2017 at seedling stage under greenhouse conditions. According to the analysis of variance (ANOVA) of leaf pycnidia coverage percentage, a significant difference (p < .01) was observed between M. graminicola isolates and wheat cultivars. The interaction between genotypes and isolates was also significant (p < .01) and the results indicated a specific interaction between genotypes and isolates. The results presented Dezful and West Azerbaijan isolates that were the most virulent with more pathogenesis on differential genotypes. Although 47 of the wheat genotypes were susceptible to all isolates, some genotypes, including Wc‐46,224 (Austria), Wc‐45,425 (Portugal), Wc‐45,565 (Turkey), P.S.No4 (Italy), Dehdasht, M3 Synthetic, KavKaz‐k4500, Arina, Flame, and Riband were resistant to all isolates. In addition, the isolates exhibited different virulence patterns on wheat genotypes. The results of this study revealed high virulence of M. graminicola isolates, and Iranian and foreign wheat genotypes, commonly used in the region, presented high susceptibility, and the resistance sources had been identified among genotypes that can be applied in the wheat breeding programs.

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Efficacy of wheat genotypes and Stb resistance genes against Iranian isolates of Zymoseptoria tritici

Cited by 17 publications

References 31 publications

Genome-wide association mapping in wheat reveals novel QTLs and potential candidate genes involved in resistance to septoria tritici blotch

Genome-wide association mapping in wheat reveals novel QTLs and potential candidate genes involved in resistance to septoria tritici blotch

Differential tolerance of Zymoseptoria tritici to altered optimal moisture conditions during the early stages of wheat infection

Resistance of wheat genotypes to Mycosphaerella graminicola isolates at seedling stage under greenhouse conditions

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