Illuminating the molecular basis of gene-for-gene resistance; Arabidopsis thaliana RRS1-R and its interaction with Ralstonia solanacearum popP2

2004 ◽  
Vol 9 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Thomas Lahaye
Keyword(s):  
Arabidopsis Thaliana ◽  
Ralstonia Solanacearum ◽  
Molecular Basis ◽  
Gene For Gene

scholarly journals Resistance and Susceptibility of Arabidopsis thaliana to Bacterial Wilt Caused by Ralstonia solanacearum

1998 ◽  
Vol 88 (4) ◽  
pp. 330-334 ◽  
Author(s):  
Chang-Hsien Yang ◽  
Gan-Der Ho
Keyword(s):  
Arabidopsis Thaliana ◽  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Bacterial Colonization ◽  
Plant Diseases ◽  
Infection Site ◽  
Bacterial Isolation ◽  
Tomato Plants ◽  
Different Strains ◽  
Growth Of Bacteria

Tomato bacterial wilt caused by Ralstonia solanacearum is a model system for studying plant-bacterial interactions, because it is genetically one of the best characterized plant diseases. We demonstrate here that four different strains of R. solanacearum, two from radishes (Rd4 and Rd15) and two from tomato (Ps21 and Ps95), can infect 27 different ecotypes of Arabidopsis thaliana, causing different responses. All ecotypes tested were highly susceptible to strain Rd15, which caused symptoms similar to those observed in tomato plants. For example, leaf drooping and discoloration developed just 3 days after inoculation, and plants completely wilted within 1 week. Strains Rd4 and Ps95 were less infectious than Rd15. With these two strains, a variety of disease responses were observed among different ecotypes at 2 weeks after inoculation; both susceptible and resistant ecotypes of A. thaliana were identified. Ps21 was the least infectious of the four strains and caused almost no symptoms in any of the ecotypes of Arabidopsis tested. Direct bacterial isolation and plant skeleton hybridization analysis from infected plants indicated that bacterial colonization was correlated with the severity of symptoms. Growth of bacteria was limited to the infection site in resistant plants, whereas the bacteria spread throughout susceptible plants by 1 week after inoculation.

Molecular basis for neofunctionalization of duplicated E3 ubiquitin ligases underlying adaptation to drought tolerance in Arabidopsis thaliana

2020 ◽  
Vol 104 (2) ◽  
pp. 474-492
Author(s):  
Estela Jiménez‐Morales ◽  
Victor Aguilar‐Hernández ◽  
Laura Aguilar‐Henonin ◽  
Plinio Guzmán
Keyword(s):  
Arabidopsis Thaliana ◽  
Drought Tolerance ◽  
Molecular Basis ◽  
Ubiquitin Ligases ◽  
E3 Ubiquitin Ligases ◽  
Adaptation To Drought

scholarly journals Genetic and molecular basis of floral induction in Arabidopsis thaliana

2020 ◽  
Vol 71 (9) ◽  
pp. 2490-2504 ◽  
Author(s):  
Atsuko Kinoshita ◽  
René Richter
Keyword(s):  
Arabidopsis Thaliana ◽  
Reproductive Success ◽  
Environmental Conditions ◽  
Molecular Basis ◽  
Recent Progress ◽  
Molecular Mechanisms ◽  
Floral Induction ◽  
Life Cycles ◽  
Complex Processes ◽  
Technological Advances

Abstract Many plants synchronize their life cycles in response to changing seasons and initiate flowering under favourable environmental conditions to ensure reproductive success. To confer a robust seasonal response, plants use diverse genetic programmes that integrate environmental and endogenous cues and converge on central floral regulatory hubs. Technological advances have allowed us to understand these complex processes more completely. Here, we review recent progress in our understanding of genetic and molecular mechanisms that control flowering in Arabidopsis thaliana.

Molecular Basis of Gene-for-Gene Specificity in Bacterial Speck Disease of Tomato

Science ◽  
1996 ◽  
Vol 274 (5295) ◽  
pp. 2063-2065 ◽  
Author(s):  
S. R. Scofield ◽  
C. M. Tobias ◽  
J. P. Rathjen ◽  
J. H. Chang ◽  
D. T. Lavelle ◽  
...  
Keyword(s):  
Molecular Basis ◽  
Bacterial Speck ◽  
Bacterial Speck Disease ◽  
Gene For Gene

scholarly journals Genetic architecture of nonadditive inheritance in Arabidopsis thaliana hybrids

2016 ◽  
Vol 113 (46) ◽  
pp. E7317-E7326 ◽  
Author(s):  
Danelle K. Seymour ◽  
Eunyoung Chae ◽  
Dominik G. Grimm ◽  
Carmen Martín Pizarro ◽  
Anette Habring-Müller ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Molecular Basis ◽  
Genetic Architecture ◽  
Genetic Basis ◽  
Genetic Variance ◽  
Candidate Region ◽  
Hybrid Vigor ◽  
Mads Box ◽  
Genome Wide ◽  
Half Diallel

The ubiquity of nonparental hybrid phenotypes, such as hybrid vigor and hybrid inferiority, has interested biologists for over a century and is of considerable agricultural importance. Although examples of both phenomena have been subject to intense investigation, no general model for the molecular basis of nonadditive genetic variance has emerged, and prediction of hybrid phenotypes from parental information continues to be a challenge. Here we explore the genetics of hybrid phenotype in 435 Arabidopsis thaliana individuals derived from intercrosses of 30 parents in a half diallel mating scheme. We find that nonadditive genetic effects are a major component of genetic variation in this population and that the genetic basis of hybrid phenotype can be mapped using genome-wide association (GWA) techniques. Significant loci together can explain as much as 20% of phenotypic variation in the surveyed population and include examples that have both classical dominant and overdominant effects. One candidate region inherited dominantly in the half diallel contains the gene for the MADS-box transcription factor AGAMOUS-LIKE 50 (AGL50), which we show directly to alter flowering time in the predicted manner. Our study not only illustrates the promise of GWA approaches to dissect the genetic architecture underpinning hybrid performance but also demonstrates the contribution of classical dominance to genetic variance.

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