scholarly journals Host-induced gene silencing of an essential chitin synthase gene confers durable resistance to Fusarium head blight and seedling blight in wheat

2015 ◽  
Vol 13 (9) ◽  
pp. 1335-1345 ◽  
Author(s):  
Wei Cheng ◽  
Xiu-Shi Song ◽  
He-Ping Li ◽  
Le-Hui Cao ◽  
Ke Sun ◽  
...  
Keyword(s):  
Gene Silencing ◽  
Fusarium Head Blight ◽  
Durable Resistance ◽  
Chitin Synthase ◽  
Seedling Blight ◽  
Head Blight

Key challenges in breeding durable disease-resistant cereals: North America

2021 ◽  
pp. 779-824
Author(s):  
Christina Cowger ◽  
Keyword(s):  
North America ◽  
Powdery Mildew ◽  
Complex Systems ◽  
Fusarium Head Blight ◽  
Durable Resistance ◽  
Hessian Fly ◽  
Bacterial Leaf Streak ◽  
Head Blight ◽  
Cereal Breeding ◽  
The Status

This chapter first describes the challenges of diverse climates, diseases, and market classes that face North American small-grain cereal breeders and producers. It discusses the challenges inherent in the complex systems of cereal breeding on the continent, and the changing resistance priorities brought about by shifting pathogen races and production practices. The remainder of the chapter is devoted (in rough order of priority) to the status and prospects for durable resistance to the main pests currently confronting the continent: Fusarium head blight, rusts, powdery mildew, leaf (and glume) blotches, viruses, Hessian fly, and bacterial leaf streak.

scholarly journals Host‐induced gene silencing of multiple genes of Fusarium graminearum enhances resistance to Fusarium head blight in wheat

2020 ◽  
Vol 18 (12) ◽  
pp. 2373-2375 ◽  
Author(s):  
Minhui Wang ◽  
Lei Wu ◽  
Yuzhen Mei ◽  
Youfu Zhao ◽  
Zhonghua Ma ◽  
...  
Keyword(s):  
Gene Silencing ◽  
Fusarium Head Blight ◽  
Fusarium Graminearum ◽  
Head Blight ◽  
Multiple Genes

scholarly journals Resistance to Fusarium Head Blight and Seedling Blight in Wheat Is Associated with Activation of a Cytochrome P450 Gene

2010 ◽  
Vol 100 (2) ◽  
pp. 183-191 ◽  
Author(s):  
X. Li ◽  
J. B. Zhang ◽  
B. Song ◽  
H. P. Li ◽  
H. Q. Xu ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Fusarium Head Blight ◽  
Development Stage ◽  
Dependent Manner ◽  
Seedling Blight ◽  
Head Blight ◽  
Trichothecene Mycotoxin ◽  
Cytochrome P450 Gene ◽  
P450 Gene ◽  
Resistant Reaction

One plant genotype displays a resistance phenotype at one development stage but a susceptible reaction to the same pathogen at another stage, which is referred to here as resistance inversion. In wheat, Fusarium head blight (FHB)-resistant cv. Sumai3 showed a Fusarium seedling blight (FSB)-susceptible reaction whereas FHB-susceptible cv. Annong8455 exhibited FSB resistance when challenged with a Fusarium asiaticum strain that produces deoxynivalenol (DON). The resistance to FHB and FSB in wheat was closely associated with expression of a plant cytochrome P450 gene in response to FHB pathogens and mycotoxins. Quantitative real-time polymerase chain reaction analyses showed that expression of nine defense-related genes in spikes and seedlings was induced by the fungal infection, in which a massive accumulation of a plant cytochrome P450 gene, CYP709C1, was clearly associated with the resistance reaction in both seedling and spike. The FHB-resistant Sumai3 accumulated 7-fold more P450 transcripts than did the FHB-susceptible Annong8455, while 84-fold more P450 transcripts were accumulated in the FSB-resistant Annong8455 than the FSB-susceptible Sumai3. A Fusarium strain with a disrupted Tri5 gene, which is not able to produce the first enzyme essential for trichothecene mycotoxin biosynthesis, also induced more P450 transcripts in FHB- and FSB-resistant cultivars. The fungal activation of the P450 gene was more profound in the FSB-resistant reaction than the FHB-resistant reaction relative to their susceptible counterparts. DON triggered a differential expression of the P450 gene with comparable patterns in spikes and seedlings in a resistance-dependent manner. These results may provide a basis for dissecting mechanisms underlying FHB and FSB resistance reactions in wheat and revealing functions of the cytochrome P450 in plant detoxification and defense.

scholarly journals Inverse effects ofArabidopsis NPR1gene on fusarium seedling blight and fusarium head blight in transgenic wheat

2012 ◽  
Vol 62 (2) ◽  
pp. 383-392 ◽  
Author(s):  
C.-S. Gao ◽  
X.-J. Kou ◽  
H.-P. Li ◽  
J.-B. Zhang ◽  
A. S. I. Saad ◽  
...  
Keyword(s):  
Fusarium Head Blight ◽  
Transgenic Wheat ◽  
Seedling Blight ◽  
Head Blight ◽  
Fusarium Seedling Blight

Advances in genetic improvement of durable resistance to Fusarium head blight in wheat

2021 ◽  
pp. 191-242
Author(s):  
Guihua Bai ◽  
Keyword(s):  
Fusarium Head Blight ◽  
Marker Assisted Selection ◽  
Genetic Improvement ◽  
Durable Resistance ◽  
Phenotypic Selection ◽  
Reference Sequence ◽  
Type Ii ◽  
Head Blight ◽  
Fhb Resistance ◽  
Different Sources

Wheat Fusarium head blight (FHB) is a destructive disease in wheat worldwide. Wheat resistance to FHB is a complex with five types. Each type of resistance is controlled by multiple quantitative trait loci (QTLs) with most having minor effects and being affected by environments. This chapter describes methodologies used for evaluating different types of resistance, consolidates the QTLs for type II and Type III resistance into 26 repeatable QTLs, discusses progresses made in genetics and breeding of wheat FHB resistance, and discusses possible new breeding strategies for FHB resistance improvement. The 26 repeatable QTL were located in ~100 Mb intervals based on IWGSC reference sequence map, which will be critical QTLs for functional marker development and for improvement of FHB resistance in breeding. Genomic selection (GS) together with marker-assisted selection (MAS) coupling with phenotypic selection will facilitate accumulation of multiple QTLs from different sources to create highly resistant cultivars.

Comparing Genetic Variation within Red Winter Wheat Populations with and without Image-Based Optical Sorter Selection

2019 ◽  
Vol 9 (2) ◽  
pp. 266-277
Author(s):  
Hussein M. Khaeim ◽  
Anthony Clark ◽  
Tom Pearson ◽  
Dr. David Van Sanford
Keyword(s):  
Genetic Variation ◽  
Fusarium Head Blight ◽  
Heading Date ◽  
Fusarium Head Blight Resistance ◽  
Gibberella Zeae ◽  
Mass Selection ◽  
Head Blight ◽  
Red Winter Wheat ◽  
Two Populations ◽  
Head Scab

Head scab is historically a devastating disease affecting not just all classes of wheat but also barley and other small grains around the world. Fusarium head blight (FHB), or head scab, is caused most often by Fusarium graminearum (Schwabe), (sexual stage – Gibberella zeae) although several Fusarium spp. can cause the disease. This study was conducted to determine the effect of mass selection for FHB resistance using an image-based optical sorter. lines were derived from the C0 and C2 of two populations to compare genetic variation within populations with and without sorter selection. Our overall hypothesis is that sorting grain results in improved Fusarium head blight resistance. Both of the used wheat derived line populations have genetic variation, and population 1 has more than population 17. They are significantly different from each other for fusarium damged kernel (FDK), deoxynivalenol (DON), and other FHB traits. Although both populations are suitable to be grown for bulks, population 1 seems better since it has more genetic variation as well as lower FDK and DON, and earlier heading date. Lines within each population were significantly different and some lines in each population had significantly lower FDK and DON after selection using an optical sorter. Some lines had significant reduction in both FDK and DON, and some others had either FDK or DON reduction. Lines of population 1 that had significant reduction, were more numerous than in population 17, and FDK and DON reduction were greater.

Registration of CJ 8809 Wheat Germplasm with Fusarium Head Blight Resistance

2007 ◽  
Vol 1 (1) ◽  
pp. 72-74
Author(s):  
Guo-Liang Jiang ◽  
ZhaoSu Wu ◽  
ZhaoXia Chen ◽  
JiMing Wu ◽  
QiMei Xia ◽  
...  
Keyword(s):  
Fusarium Head Blight ◽  
Fusarium Head Blight Resistance ◽  
Blight Resistance ◽  
Head Blight ◽  
Wheat Germplasm
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