Relation Between Resistance to Leaf Rust and Fusarium Crown Rot Diseases in Some Egyptian Wheat Cultivars

Abstract Background Fusarium crown rot (FCR) is a chronic disease in cereal production worldwide. The impact of this disease is highly environmentally dependant and significant yield losses occur mainly in drought-affected crops. Results In the study reported here, we evaluated possible relationships between genes conferring FCR resistance and drought tolerance using two approaches. The first approach studied FCR induced differentially expressed genes (DEGs) targeting two barley and one wheat loci against a panel of genes curated from the literature based on known functions in drought tolerance. Of the 149 curated genes, 61.0% were responsive to FCR infection across the three loci. The second approach was a comparison of the global DEGs induced by FCR infection with the global transcriptomic responses under drought in wheat. This analysis found that approximately 48.0% of the DEGs detected one week following drought treatment and 74.4% of the DEGs detected three weeks following drought treatment were also differentially expressed between the susceptible and resistant isolines under FCR infection at one or more timepoints. As for the results from the first approach, the vast majority of common DEGs were downregulated under drought and expressed more highly in the resistant isoline than the sensitive isoline under FCR infection. Conclusions Results from this study suggest that the resistant isoline in wheat was experiencing less drought stress, which could contribute to the stronger defence response than the sensitive isoline. However, most of the genes induced by drought stress in barley were more highly expressed in the susceptible isolines than the resistant isolines under infection, indicating that genes conferring drought tolerance and FCR resistance may interact differently between these two crop species. Nevertheless, the strong relationship between FCR resistance and drought responsiveness provides further evidence indicating the possibility to enhance FCR resistance by manipulating genes conferring drought tolerance.

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Colonization of Durum Wheat (Triticum turgidum L. var. durum) Culms Exhibiting Premature Senescence (Dead Heads) Associated with Fusarium pseudograminearum Crown Rot

Plant Disease ◽

10.1094/pdis-03-17-0415-re ◽

2017 ◽

Vol 101 (10) ◽

pp. 1788-1794 ◽

Cited By ~ 4

Author(s):

Noel L. Knight ◽

Bethany Macdonald ◽

Mark W. Sutherland

Keyword(s):

Durum Wheat ◽

Disease Susceptibility ◽

Triticum Turgidum ◽

Crown Rot ◽

Vascular Bundles ◽

Fusarium Crown Rot ◽

Fusarium Pseudograminearum ◽

Field Samples ◽

Key Factor ◽

Significant Disease

Fusarium crown rot is a significant disease of durum wheat (Triticum turgidum L. var. durum), which exhibits high levels of disease susceptibility. The most extreme symptom of crown rot is a prematurely senescing culm that typically fails to set grain. Individual crown rot-affected durum wheat plants displaying both nonsenescent and prematurely senescent culms were harvested to compare visual discoloration, Fusarium pseudograminearum biomass, and vascular colonization in culm sections sampled at three different heights above the crown. Field samples of EGA Bellaroi were collected at Wellcamp, QLD, in 2011, 2012, 2013, and 2014, and of Hyperno at Narrabri, NSW, in 2014. Prematurely senescent culms exhibited greater visual discoloration, F. pseudograminearum biomass, and vascular colonization than nonsenescent culms in each year they were examined. The extent of these differences varied between environments and timing of collection in each year. Vascular colonization initially occurred in xylem vessels and spread into phloem tissues as disease severity increased. The increased presence of hyphae in vascular bundles of prematurely senescing culms provides strong evidence for the hypothesis that restriction of water and nutrient movement in a diseased culm is a key factor in crown rot severity.

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Development of tightly linked markers and identification of candidate genes for Fusarium crown rot resistance in barley by exploiting a near-isogenic line-derived population

Theoretical and Applied Genetics ◽

10.1007/s00122-018-3209-0 ◽

2018 ◽

Vol 132 (1) ◽

pp. 217-225 ◽

Cited By ~ 4

Author(s):

Yunfeng Jiang ◽

Ahsan Habib ◽

Zhi Zheng ◽

Meixue Zhou ◽

Yuming Wei ◽

...

Keyword(s):

Candidate Genes ◽

Crown Rot ◽

Isogenic Line ◽

Near Isogenic Line ◽

Fusarium Crown Rot

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Genetic Variance for Fusarium Crown Rot Tolerance in Durum Wheat

10.1101/2020.10.05.326058 ◽

2020 ◽

Author(s):

Gururaj Kadkol ◽

Jess Meza ◽

Steven Simpfendorfer ◽

Steve Harden ◽

Brian Cullis

Keyword(s):

Durum Wheat ◽

Bread Wheat ◽

Genetic Variance ◽

Field Trials ◽

Crown Rot ◽

Tolerance Index ◽

Fusarium Crown Rot ◽

N Yield ◽

Good Repeatability ◽

Tolerance Indices

AbstractTolerance to the cereal disease Fusarium crown rot (FCR) was investigated in a set of 34 durum wheat genotypes, with Suntop, (bread wheat) and EGA Bellaroi (durum) as tolerant and intolerant checks, in a series of replicated field trials over four years with inoculated (FCR-i) and non-inoculated (FCR-n) plots of the genotypes. The genotypes included conventional durum lines and lines derived from crossing durum with 2-49, a bread wheat line with the highest level of partial resistance to FCR. A split plot trial design was chosen to optimize the efficiency for the prediction of FCR tolerance for each genotype. A multi-environment trial (MET) analysis was undertaken which indicated that there was good repeatability of FCR tolerance across years. Based on an FCR tolerance index, Suntop was the most tolerant genotype and EGA Bellaroi was very intolerant, but many durum wheats had FCR tolerance indices which were comparable to Suntop. These included some conventional durum lines, V101030, TD1702, V11TD013*3X-63 and DBA Bindaroi, as well as genotypes from crosses with 2-49 (V114916 and V114942). The correlation between FCR tolerance and FCR-n yield predictions was moderately negative indicating it could be somewhat difficult to develop high yielding FCR-tolerant genotypes. However, FCR tolerance showed a positive correlation with FCR-i yield predictions in seasons of high disease expression indicating it could be possible to screen for FCR tolerance using only FCR-i treatments. These results are the first demonstration of genetic diversity in durum germplasm for FCR tolerance and they provide a basis for breeding for this trait.

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Genetic Determinants of Wheat Resistance to Common Root Rot (Spot Blotch), Fusarium Crown Rot, and Sharp Eyespot

10.1101/2020.07.30.228932 ◽

2020 ◽

Author(s):

Jun Su ◽

Jiaojie Zhao ◽

Shuqing Zhao ◽

Mengyu Li ◽

Xiaofeng Shang ◽

...

Keyword(s):

Root Rot ◽

Spot Blotch ◽

Crown Rot ◽

Genetic Determinants ◽

Common Root ◽

Fusarium Crown Rot ◽

Common Root Rot ◽

Sharp Eyespot ◽

Root And Crown Rot ◽

Moderate Resistance

Due to the field soil changes, high density planting, and straw-returning methods, wheat common root rot (spot blotch), Fusarium crown rot (FCR), and sharp eyespot have become severe threatens to global wheat productions. Only a few wheat genotypes show moderate resistance to these root and crown rot fungal diseases, and the genetic determinants of wheat resistance to these devastating diseases have been poorly understood. This review summarizes the recent progress of genetic studies on wheat resistance to common root rot, Fusarium crown rot, and sharp eyespot. Wheat germplasms with relative higher resistance are highlighted and genetic loci controlling the resistance to each of the disease are summarized.

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Different Tolerance in Bread Wheat, Durum Wheat and Barley to Fusarium Crown Rot Disease Caused by Fusarium pseudograminearum

Journal of Phytopathology ◽

10.1111/j.1439-0434.2012.01920.x ◽

2012 ◽

Vol 160 (7-8) ◽

pp. 412-417 ◽

Cited By ~ 21

Author(s):

Yaxi Liu ◽

Jun Ma ◽

Wei Yan ◽

Guijun Yan ◽

Meixue Zhou ◽

...

Keyword(s):

Durum Wheat ◽

Bread Wheat ◽

Crown Rot ◽

Fusarium Crown Rot ◽

Fusarium Pseudograminearum ◽

Rot Disease

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Identification of Leaf Rust Resistance Genes in Selected Wheat Cultivars and Development of Multiplex PCR

Open Life Sciences ◽

10.1515/biol-2019-0036 ◽

2019 ◽

Vol 14 (1) ◽

pp. 327-334 ◽

Cited By ~ 2

Author(s):

Agnieszka Tomkowiak ◽

Roksana Skowrońska ◽

Alicja Buda ◽

Danuta Kurasiak-Popowska ◽

Jerzy Nawracała ◽

...

Keyword(s):

Multiplex Pcr ◽

Leaf Rust ◽

Resistance Genes ◽

Rust Resistance ◽

Leaf Rust Resistance ◽

Field Resistance ◽

Wheat Cultivars ◽

Pcr Conditions ◽

Rust Resistance Genes ◽

Leaf Rust Resistance Genes

AbstractTen leading wheat cultivars originating from the Plant Breeding and Acclimatization Institute (IHAR) - National Research Institute (Poland) and the Department of Gene Bank (Czech Republic) were used to establish a field experiment in 2017 and 2018 at the Dłoń Experimental Farm. The analyzed wheat genotypes were characterized by diversified field resistance to leaf rust. Jubilatka, Thatcher and Sparta were the most resistant cultivars in field conditions in both 2017 and 2018. The aim of the work was to identify the Lr11, L13, Lr16 and Lr26 genes encoding resistance to leaf rust using molecular SSR markers (wmc24, wmc261, Xgwm630, Xwmc764 and P6M12) and to develop multiplex PCR conditions to accelerate identification of these genes. Markers of three leaf rust resistance genes have been identified simultaneously in these cultivars. Jubilatka, Thatcher and Sparta cultivars may serve as a good source of the analyzed leaf rust resistance genes. In addition, multiplex PCR conditions have been developed for the simultaneous identification of the Lr11 and Lr16 and Lr11 and Lr26 gene pairs.

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Co-occurrence of Fusarium head blight and crown rot on several wheat cultivars in the South of Iraq Basra Province

10.1063/5.0000108 ◽

2020 ◽

Author(s):

Mohammed Hussein Minati ◽

Mohanned Khalaf Mohammed-Ameen

Keyword(s):

Fusarium Head Blight ◽

Crown Rot ◽

Wheat Cultivars ◽

The South ◽

Head Blight ◽

South Of Iraq

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Identification of the allelic state of the Lr34 leaf rust resistance gene in soft winter wheat cultivars developed in Ukraine

Cytology and Genetics ◽

10.3103/s0095452711050069 ◽

2011 ◽

Vol 45 (5) ◽

pp. 271-276 ◽

Cited By ~ 7

Author(s):

A. V. Karelov ◽

Ya. V. Pirko ◽

N. A. Kozub ◽

I. A. Sozinov ◽

N. N. Pirko ◽

...

Keyword(s):

Winter Wheat ◽

Leaf Rust ◽

Resistance Gene ◽

Rust Resistance ◽

Leaf Rust Resistance ◽

Leaf Rust Resistance Gene ◽

Wheat Cultivars ◽

Allelic State ◽

Winter Wheat Cultivars ◽

Soft Winter Wheat

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Further sources of field resistance to crown rot (Gibberella zeae) of cereals in Queensland

Australian Journal of Experimental Agriculture ◽

10.1071/ea9710455 ◽

1971 ◽

Vol 11 (51) ◽

pp. 455 ◽

Cited By ~ 14

Author(s):

GB Wildermuth ◽

GS Purss

Keyword(s):

Specific Resistance ◽

Field Trials ◽

Field Resistance ◽

Gibberella Zeae ◽

Crown Rot ◽

Wheat Cultivars ◽

Canary Grass ◽

Oat Cultivars ◽

Phalaris Canariensis

Four hundred cultivars and lines of wheat, five cultivars of oats, and two of barley were examined for resistance to crown rot (Gibberella zeae) in field trials over the period 1965-1969. Field resistance was confirmed in the wheat cultivars Gala and Mengavi ; resistance comparable with that of Gala was also demonstrated in three lines of wheat and the five oat cultivars. Canary grass (Phalaris canariensis) was also tested and proved very susceptible to the disease. Although no specific resistance was demonstrated, the generalized resistance available offers a worthwhile means of combating crown rot.

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