scholarly journals Tracking the Ancestry of Known and ‘Ghost’ Homeologous Subgenomes in Model Grass Brachypodium Polyploids

2021 ◽  
Author(s):  
Rubén Sancho ◽  
Luis A. Inda ◽  
Antonio Díaz‐Pérez ◽  
David L. Des Marais ◽  
Sean Gordon ◽  
...  
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2011 ◽  
Vol 193 (2) ◽  
pp. 376-386 ◽  
Author(s):  
José M. Barrero ◽  
John V. Jacobsen ◽  
Mark J. Talbot ◽  
Rosemary G. White ◽  
Stephen M. Swain ◽  
...  

2018 ◽  
Vol 93 (6) ◽  
pp. 1088-1101 ◽  
Author(s):  
Yinjia Li ◽  
Sheng Zuo ◽  
Zhiliang Zhang ◽  
Zhanjie Li ◽  
Jinlei Han ◽  
...  

Genome ◽  
2012 ◽  
Vol 55 (2) ◽  
pp. 152-163 ◽  
Author(s):  
Mirko Barbieri ◽  
Thierry C. Marcel ◽  
Rients E. Niks ◽  
Enrico Francia ◽  
Marianna Pasquariello ◽  
...  

The potential of the model grass Brachypodium distachyon L. (Brachypodium) for studying grass–pathogen interactions is still underexploited. We aimed to identify genomic regions in Brachypodium associated with quantitative resistance to the false brome rust fungus Puccinia brachypodii . The inbred lines Bd3-1 and Bd1-1, differing in their level of resistance to P. brachypodii, were crossed to develop an F2 population. This was evaluated for reaction to a virulent isolate of P. brachypodii at both the seedling and advanced growth stages. To validate the results obtained on the F2, resistance was quantified in F2-derived F3 families in two experiments. Disease evaluations showed quantitative and transgressive segregation for resistance. A new AFLP-based Brachypodium linkage map consisting of 203 loci and spanning 812 cM was developed and anchored to the genome sequence with SSR and SNP markers. Three false brome rust resistance QTLs were identified on chromosomes 2, 3, and 4, and they were detected across experiments. This study is the first quantitative trait analysis in Brachypodium. Resistance to P. brachypodii was governed by a few QTLs: two acting at the seedling stage and one acting at both seedling and advanced growth stages. The results obtained offer perspectives to elucidate the molecular basis of quantitative resistance to rust fungi.


2019 ◽  
Vol 101 (3) ◽  
pp. 235-255 ◽  
Author(s):  
Sávio Siqueira Ferreira ◽  
Marcella Siqueira Simões ◽  
Gabriel Garon Carvalho ◽  
Leydson Gabriel Alves de Lima ◽  
Raphael Mendes de Almeida Svartman ◽  
...  
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2015 ◽  
Vol 105 (4) ◽  
pp. 482-489 ◽  
Author(s):  
Shaobin Zhong ◽  
Shaukat Ali ◽  
Yueqiang Leng ◽  
Rui Wang ◽  
David F. Garvin

Cochliobolus sativus (anamorph: Bipolaris sorokiniana) causes spot blotch, common root rot, and kernel blight or black point in barley and wheat. However, little is known about the molecular mechanisms underlying the pathogenicity of C. sativus or the molecular basis of resistance and susceptibility in the hosts. This study aims to establish the model grass Brachypodium distachyon as a new model for studying plant–fungus interactions in cereal crops. Six B. distachyon lines were inoculated with five C. sativus isolates. The results indicated that all six B. distachyon lines were infected by the C. sativus isolates, with their levels of resistance varying depending on the fungal isolates used. Responses ranging from hypersensitive response-mediated resistance to complete susceptibility were observed in a large collection of B. distachyon (2n = 2x = 10) and B. hybridum (2n = 4x = 30) accessions inoculated with four of the C. sativus isolates. Evaluation of an F2 population derived from the cross between two of the B. distachyon lines, Bd1-1 and Bd3-1, with isolate Cs07-47-1 showed quantitative and transgressive segregation for resistance to C. sativus, suggesting that the resistance may be governed by quantitative trait loci from both parents. The availability of whole-genome sequences of both the host (B. distachyon) and the pathogen (C. sativus) makes this pathosystem an attractive model for studying this important disease of cereal crops.


2011 ◽  
Vol 123 (3) ◽  
pp. 455-464 ◽  
Author(s):  
Naxin Huo ◽  
David F. Garvin ◽  
Frank M. You ◽  
Stephanie McMahon ◽  
Ming-Cheng Luo ◽  
...  

2017 ◽  
Vol 8 ◽  
Author(s):  
Andrew N. Doust ◽  
Margarita Mauro-Herrera ◽  
John G. Hodge ◽  
Jessica Stromski

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