Enhancing Fusarium crown rot resistance of durum wheat by introgressing chromosome segments from hexaploid wheat

Ma, Jun; Zhang, C.Y.; Liu, Y.X.; Yan, Guijun; Liu, C.J.

doi:10.1007/s10681-011-0492-0

Cited by 17 publications

(18 citation statements)

References 17 publications

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“…All of the Qld and seven of the 19 NSW sites were planted to bread wheat varieties. Hence, the widespread occurrence of FHB in 2010 does not indicate a clear association with durum wheat, which is more susceptible than bread wheat (Ma et al. , 2011).…”

Section: Discussionmentioning

confidence: 99%

Fusarium graminearum and Fusarium pseudograminearum caused the 2010 head blight epidemics in Australia

Obanor

Neate²,

Simpfendorfer

et al. 2012

Plant Pathology

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Wheat crops in southeast Queensland (Qld) and northern New South Wales (NSW) were infected with fusarium head blight (FHB)-like symptoms during the 2010-11 wheat growing season. Wheat crops in this region were surveyed at soft dough or early maturity stage to determine the distribution, severity, aetiology and toxigenicity of FHB. FHB was widespread on bread wheat and durum, and Fusarium graminearum and ⁄ or F. pseudograminearum were diagnosed from 42 of the 44 sites using species-specific PCR primers directly on spikelets or from monoconidial cultures obtained from spikelets. Stem base browning due to crown rot (CR) was also evident in some samples from both states. The overall FHB and CR severity was higher for NSW than Qld. Deoxynivalenol (DON) concentration of immature grains was more than 1 mg kg )1 in samples from 11 Qld and 14 NSW sites, but only 13 of 498 mature grain samples sourced from the affected areas had more than 1 mg kg )1 DON. DON concentration in straw also exceeded 1 mg kg )1 in eight Qld and all but one NSW sites but this was not linked to DON concentration of immature grains. The proportion of spikelets with positive diagnosis for F. graminearum and ⁄ or F. pseudograminearum and weather-related factors influenced DON levels in immature grains. The average monthly rainfall for August-November during crop anthesis and maturation exceeded the long-term monthly average by 10-150%. Weather played a critical role in FHB epidemics for Qld sites but this was not apparent for the NSW sites, as weather was generally favourable at all sites.

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Section: Discussionmentioning

confidence: 99%

Fusarium graminearum and Fusarium pseudograminearum caused the 2010 head blight epidemics in Australia

Obanor

Neate²,

Simpfendorfer

et al. 2012

Plant Pathology

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“…However, it should be noted that the incorporation of FCR resistance from wild relatives into adapted varieties may require time, especially if linkages are found between the genes conditioning FCR resistance and undesirable traits. The transfer of FCR resistance from bread to durum wheat can be another option to improve the resistance of durum varieties, and preliminary reports suggest that such transfer is technically possible (Ma et al, 2012b;Martin et al, 2013).…”

Section: Conclusion and Future Prospectsmentioning

confidence: 99%

Fusarium crown rot caused by Fusarium pseudograminearum in cereal crops: recent progress and future prospects

Kazan

Gardiner

2018

Molecular Plant Pathology

208

158

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Diseases caused by Fusarium pathogens inflict major yield and quality losses on many economically important plant species worldwide, including cereals. Fusarium crown rot (FCR), caused by Fusarium pseudograminearum, is a cereal disease that occurs in many arid and semi-arid cropping regions of the world. In recent years, this disease has become more prevalent, in part as a result of the adoption of moisture-preserving cultural practices, such as minimum tillage and stubble retention. In this pathogen profile, we present a brief overview of recent research efforts that have not only advanced our understanding of the interactions between F. pseudograminearum and cereal hosts, but have also provided new disease management options. For instance, significant progress has been made in the genetic characterization of pathogen populations, the development of new tools for disease prediction, and the identification and pyramiding of loci that confer quantitative resistance to FCR in wheat and barley. In addition, transcriptome analyses have revealed new insights into the processes involved in host defence. Significant progress has also been made in understanding the mechanistic details of the F. pseudograminearum infection process. The sequencing and comparative analyses of the F. pseudograminearum genome have revealed novel virulence factors, possibly acquired through horizontal gene transfer. In addition, a conserved pathogen gene cluster involved in the degradation of wheat defence compounds has been identified, and a role for the trichothecene toxin deoxynivalenol (DON) in pathogen virulence has been reported. Overall, a better understanding of cereal host-F. pseudograminearum interactions will lead to the development of new control options for this increasingly important disease problem. Taxonomy: Fusarium pseudograminearum O'Donnell & Aoki; Kingdom Fungi; Phylum Ascomycota; Subphylum Pezizomycotina; Class Sordariomycetes; Subclass Hypocreomycetidae; Order Hypocreales; Family Nectriaceae; Genus Fusarium. Disease symptoms: Fusarium crown rot caused by F. pseudograminearum is also known as crown rot, foot rot and root rot. Infected seedlings can die before or after emergence. If infected seedlings survive, typical disease symptoms are browning of the coleoptile, subcrown internode, lower leaf sheaths and adjacent stems and nodal tissues; this browning can become evident within a few weeks after planting or throughout plant development. Infected plants may develop white heads with no or shrivelled grains. Disease symptoms are exacerbated under water limitation. Identification and detection: Fusarium pseudograminearum macroconidia usually contain three to five septa (22-60.5 × 2.5-5.5 μm). On potato dextrose agar (PDA), aerial mycelia appear floccose and reddish white, with red or reddish-brown reverse pigmentation. Diagnostic polymerase chain reaction (PCR) tests based on the amplification of the gene encoding translation elongation factor-1a (TEF-1a) have been developed for molecular identification. Host range: All maj...

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“…This also appeared to be the case for QTLs related to resistance to crown rot and Fusarium head blight. These major QTLs also failed to provide resistance to crown rot and Fusarium head blight once transferred to the durum background (Ma et al, 2012a; Xie GQ and Liu CJ, unpublished results). Previous studies (Ma et al, 2012a) have suggested that possible reasons for the loss of function of these genes may be due to the absence of Dchromosomes, which might be essential for the proper function of the genes, or alternatively, might be due to the presence of suppressor genes in the durum.…”

Section: Discussionmentioning

confidence: 96%

“…However, to our knowledge, only one study has been carried out in this area to date. A backcross population, which was developed by crossing durum wheat 'Bellaroi' and hexaploid wheat 'CSCR6', was used to investigate the possibility of improving disease resistance of durum wheat by introgressing the resistant genes from hexaploid into the durum genetic background (Ma et al, 2012a). The results indicated that 67% of the population lines showed better crown rot resistance than the recurrent durum parent 'Bellaroi'.…”

Section: Introductionmentioning

confidence: 99%

Improving yield and quality traits of durum wheat by introgressing chromosome segments from hexaploid wheat

Zhang

Yan³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. Durum wheat (Triticum turgidum durum; 2n = 4x = 28; genome AABB) has long been an important food resource for human diets. The projected increase of the world's population to 9.1 billion by 2050 has highlighted the importance and urgency for improving the yield and quality performance of durum wheat. A backcrossed population, which was derived from the durum wheat variety 'Bellaroi' (recurrent parent) and the hexaploid genotype 'CSCR6' (donor parent), was used to investigate the feasibility of improving yield-and quality-related traits of durum wheat by introgressing chromosome fragments from hexaploid wheat. The population means for grain protein content, gluten content, spike length, and spikelet number were improved compared with those of the recurrent parent 'Bellaroi'. A small proportion of the backcross population lines showed significant improvements in spike length and spikelet number compared with the recurrent parent Improving yield and quality traits of durum wheat 'Bellaroi'. Some loci with significant effects for plant height, spike length, spikelet number, and thousand-grain weight were identified. Several of these loci affected more than one trait. These results showed that the introgression of chromosome fragments from 'CSCR6' into the durum genetic background could be an effective method for improving yield and quality traits of durum wheat. In addition, the loci showing significant effects on desired traits in this study could be fine mapped using an F 2 population obtained by backcrossing the lines that carry the positive allele(s) with the recurrent parent.

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Enhancing Fusarium crown rot resistance of durum wheat by introgressing chromosome segments from hexaploid wheat

Cited by 17 publications

References 17 publications

Fusarium graminearum and Fusarium pseudograminearum caused the 2010 head blight epidemics in Australia

Fusarium graminearum and Fusarium pseudograminearum caused the 2010 head blight epidemics in Australia

Fusarium crown rot caused by Fusarium pseudograminearum in cereal crops: recent progress and future prospects

Improving yield and quality traits of durum wheat by introgressing chromosome segments from hexaploid wheat

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