Characterization of Yr54 and other genes associated with adult plant resistance to yellow rust and leaf rust in common wheat Quaiu 3

2013 ◽  
Vol 33 (2) ◽  
pp. 385-399 ◽  
Author(s):  
B. R. Basnet ◽  
R. P. Singh ◽  
A. M. H. Ibrahim ◽  
S. A. Herrera-Foessel ◽  
J. Huerta-Espino ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Common Wheat ◽  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Yellow Rust ◽  
Adult Plant

Development, Field and Molecular Characterization of Advanced Lines with Pleiotropic Adult-Plant Resistance in Common Wheat

2015 ◽  
Vol 41 (10) ◽  
pp. 1472 ◽  
Author(s):  
Jin-Dong LIU ◽  
En-Nian YANG ◽  
Yong-Gui XIAO ◽  
Xin-Min CHEN ◽  
Ling WU ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Common Wheat ◽  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Adult Plant

CHROMOSOME LOCATION OF THREE GENES FOR LEAF RUST RESISTANCE IN COMMON WHEAT

1971 ◽  
Vol 13 (3) ◽  
pp. 480-483 ◽  
Author(s):  
P. L. Dyck ◽  
E. R. Kerber
Keyword(s):  
Leaf Rust ◽  
Common Wheat ◽  
Plant Resistance ◽  
Rust Resistance ◽  
Adult Plant Resistance ◽  
Leaf Rust Resistance ◽  
Adult Plant ◽  
Monosomic Analysis ◽  
Chromosome Location ◽  
Seedling Resistance

Genes Lr10 and Lr16 for seedling resistance and gene Lr12 for adult-plant resistance to leaf rust in common wheat were located on specific chromosomes by monosomic analysis using the Rescue monosomic series. Gene Lr10 is on chromosome 1A and genes Lr12 and Lr16 are on chromosome 4A. The latter two genes must be more than 50 crossover units apart since they segregated independently. These three genes were backcrossed into Thatcher from the variety Exchange. The variety Chinese Spring probably carries gene Lr12.

Characterization of Adult Plant Resistance to Leaf Rust and Stripe Rust in Indian Wheat Cultivar ‘New Pusa 876’

Crop Science ◽  
2018 ◽  
Vol 58 (2) ◽  
pp. 630-638 ◽  
Author(s):  
Luis J. Ponce‐Molina ◽  
Julio Huerta‐Espino ◽  
Ravi P. Singh ◽  
Bhoja R. Basnet ◽  
Evans Lagudah ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Stripe Rust ◽  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Wheat Cultivar ◽  
Adult Plant

scholarly journals Genotyping of Ukrainian common wheat cultivars using the marker of the Lr48 gene conferring moderate resistance to leaf rust

2018 ◽  
Vol 22 ◽  
pp. 86-89
Author(s):  
A. V. Karelov ◽  
N. A. Kozub ◽  
I. A. Sozinov
Keyword(s):  
Leaf Rust ◽  
Common Wheat ◽  
Resistance Genes ◽  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Molecular Genetic ◽  
Leaf Rust Resistance ◽  
Adult Plant ◽  
Wheat Cultivars ◽  
National Academy Of Sciences

Aim. Common wheat (Triticum aestivum L.) is one of the most important and widely cultivated crops over the world. For a lot of wheat diseases introduction of resistance genes is considered to be the most rational way to diminish yield losses and control spread of causal agents. The aim of this research was to study a sample of Ukrainian common wheat cultivars with the use of the molecular genetic marker for the Lr48 gene. Methods. DNA samples of 46 common wheat cultivars developed in the Remeslo Myronivka Institute of Wheat (RMIW) of National Academy of Agrarian Sciences jointly with the Institute of Plant Physiology and Genetics of National Academy of Sciences of Ukraine were analyzed with the use of the marker IWB70147. Results. It was revealed that 15 out of 46 (or 32.6 %) cultivars carried resistance-associated allele of the marker. Conclusions. It was revealed that the resistance-associated allele of the marker of the Lr48 gene is present in Ukrainian common wheat cultivars developed in the Forrest Steppe zone of Ukraine. The possible source of the resistance allele is „Mironovskaya 808‟ which is in the pedigree of many Ukrainian and world wheat cultivars. The data obtained in this research can be used in breeding programs to select sources of moderate adult plant resistance. Cultivars „Yuviliar Myronivskii‟, „Volodarka‟ and „Pamyati Remesla‟ with adult leaf rust resistance conferred by the Lr48 gene also carry resistance associated allele of the Lr34/Yr18/Pm38/Sr57/Bdv1 gene.Keywords: molecular markers, wheat, resistance genes, adult plant resistance.

scholarly journals Adult Plant Resistance in Maize to Northern Leaf Spot Is a Feature of Partial Loss-of-function Alleles ofHm1

2018 ◽  
Author(s):  
Sandeep R. Marla ◽  
Kevin Chu ◽  
Satya Chintamanani ◽  
Dilbag Multani ◽  
Antje Klempien ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Resistance Genes ◽  
Plant Resistance ◽  
Leaf Spot ◽  
Adult Plant Resistance ◽  
Plant Diseases ◽  
Adult Plant ◽  
Hc Toxin ◽  
Differential Transcription

ABSTRACTAdult plant resistance (APR) is an enigmatic phenomenon in which resistance genes are ineffective in protecting seedlings from disease but confer robust resistance at maturity. Maize has multiple cases in which genes confer APR to northern leaf spot, a lethal disease caused byCochliobolus carbonumrace 1 (CCR1). The first identified case of APR in maize is encoded by a hypomorphic allele,Hm1A, at thehm1locus. In contrast, wild type alleles ofhm1provide complete protection at all developmental stages and in every part of the maize plant.Hm1encodes an NADPH-dependent reductase, which inactivates HC-toxin, a key virulence effector of CCR1. Cloning and characterization ofHm1Aruled out differential transcription or translation for its APR phenotype and identified an amino acid substitution that reduced HC-toxin reductase (HCTR) activity. The possibility of a causal relationship between the weak nature ofHm1Aand its APR phenotype was confirmed by the generation of two new APR alleles ofHm1by mutagenesis. The HCTRs encoded by these new APR alleles had undergone relatively conservative missense changes that partially reduced their enzymatic activity similar to HM1A. No difference in accumulation of HCTR was observed between adult and juvenile plants, suggesting that the susceptibility of seedlings derives from a greater need for HCTR activity, not reduced accumulation of the gene product. Conditions and treatments that altered the photosynthetic output of the host had a dramatic effect on resistance imparted by the APR alleles, demonstrating a link between the energetic or metabolic status of the host and disease resistance affected by HC-toxin catabolism by the APR alleles of HCTR.AUTHOR SUMMARYAdult plant resistance (APR) is a phenomenon in which disease resistance genes are able to confer resistance at the adult stages of the plant but somehow fail to do so at the seedling stages. Despite the widespread occurrence of APR in various plant diseases, the mechanism underlying this trait remains obscure. It is not due to the differential transcription of these genes, and here we show that it is also not due to the differential translation or activity of the APR alleles of the maizehm1gene at different stages of development. Using a combination of molecular genetics, biochemistry and physiology, we present multiple lines of evidence that demonstrate that APR is a feature or symptom of weak forms of resistance. While the mature parts of the plant are metabolically robust enough to manifest resistance, seedling tissues are not, leaving them vulnerable to disease. Growth conditions that compromise the photosynthetic output of the plant further deteriorate the ability of the seedlings to protect themselves from pathogens.One sentence summaryCharacterization of adult plant resistance in the maize-CCR1 pathosystem reveals a causal link between weak resistance and APR.

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