scholarly journals Horizontal chromosome transfer and independent evolution drive diversification in Fusarium oxysporum f. sp. fragariae .

2020 ◽  
Author(s):  
Peter M. Henry ◽  
Dominique D.A. Pincot ◽  
Bradley N. Jenner ◽  
Celia Borrero ◽  
Manuel Aviles ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Chromosome Transfer ◽  
Independent Evolution

scholarly journals The multi-speed genome ofFusarium oxysporumreveals association of histone modifications with sequence divergence and footprints of past horizontal chromosome transfer events

2018 ◽  
Author(s):  
Like Fokkens ◽  
Shermineh Shahi ◽  
Lanelle R. Connolly ◽  
Remco Stam ◽  
Sarah M. Schmidt ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Histone Modifications ◽  
Fungal Infections ◽  
Sequence Similarity ◽  
Genome Structure ◽  
Histone H3 ◽  
Sequence Divergence ◽  
Chromosome Transfer ◽  
A Genome ◽  
Accessory Chromosomes

AbstractFusarium oxysporumis an economically important pathogen causing wilting or rotting disease symptoms in a large number of crops. It is proposed to have a structured, “two-speed” genome: i.e. regions containing genes involved in pathogenicity cluster with transposons on separate accessory chromosomes. This is hypothesized to enhance evolvability. Given the continuum of adaptation of all the genes encoded in a genome, however, one would expect a more complex genome structure. By comparing the genome of reference strain Fol4287 to those of 58 otherFusarium oxysporumstrains, we found that some Fol4287 accessory chromosomes are lineage-specific, while others occur in multiple lineages with very high sequence similarity - but only in strains that infect the same host as Fol4287. This indicates that horizontal chromosome transfer has been instrumental in past host-switches. Unexpectedly, we found that the sequence of the three smallest core chromosomes (Chr. 11, 12 and 13) is more divergent than that of the other core chromosomes. Moreover, these chromosomes are enriched in genes involved in metabolism and transport and genes that are differentially regulated during infection. Interestingly, these chromosomes are –like the accessory chromosomes– marked by histone H3 lysine 27 trimethylation (H3K27me3) and depleted in histone H3 lysine 4 dimethylation (H3K4me2). Detailed genomic analyses revealed a complex, “multi-speed genome” structure inFusarium oxysporum. We found a strong association of H3K27me3 with elevated levels of sequence divergence that is independent of the presence of repetitive elements. This provides new leads into how clustering of genes evolving at similar rates could increase evolvability.Author summaryFungi that cause disease on plants are an increasingly important threat to food security. New fungal diseases emerge regularly. The agricultural industry makes large investments to breed crops that are resistant to fungal infections, yet rapid adaptation enables fungal pathogens to overcome this resistance within a few years or decades. It has been proposed that genome ‘compartmentalization’ of plant pathogenic fungi, in which infection-related genes are clustered with transposable elements (or ‘jumping genes’) into separate, fast-evolving regions, enhances their adaptivity. Here, we aimed to shed light on the possible interplay between genome organization and adaptation. We measured differences in sequence divergence and dispensability between and within individual chromosomes of the important plant pathogenFusarium oxysporum. Based on these differences we defined four distinct chromosomal categories. We then mapped histone modifications and gene expression levels under different conditions for these four categories. We found a ‘division of labor’ between chromosomes, where some are ‘pathogenicity chromosomes’ - specialized towards infection of a specific host, while others are enriched in genes involved in more generic infection-related processes. Moreover, we confirmed that horizontal transfer of pathogenicity chromosomes likely plays an important role in gain of pathogenicity. Finally, we found that a specific histone modification is associated with increased sequence divergence.

Chemical and biological profiling on rhizobacteria from Physalis peruviana with antagonistic activity agaisnt Fusarium oxysporum

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
C Soto ◽  
J Riaño ◽  
P Jiménez ◽  
E Coy-Barrera
Keyword(s):  
Fusarium Oxysporum ◽  
Antagonistic Activity ◽  
Physalis Peruviana

Uji Toksisitas Beberapa Fungisida Nabati terhadap Penyakit Layu Fusarium (Fusarium oxysporum) pada Tanaman Kentang (Solanum tuberosum L.) secara In Vitro (Toxicity Test of several Biofungicides in controlling Fusarium wilt (Fusarium oxysporum) in Potato Plants (Solanum tuberosum L.) by In Vitro)

2019 ◽  
Vol 9 (2) ◽  
pp. 91
Author(s):  
Ghea Dotulong ◽  
Stella Umboh ◽  
Johanis Pelealu
Keyword(s):  
Solanum Tuberosum ◽  
Fusarium Oxysporum ◽  
Fusarium Wilt ◽  
Leaf Extract ◽  
Solanum Tuberosum L ◽  
In Vitro Toxicity ◽  
Potato Plants ◽  
Colony Diameter ◽  
In Vitro Toxicity Test

Uji Toksisitas Beberapa Fungisida Nabati terhadap Penyakit Layu Fusarium (Fusarium oxysporum) pada Tanaman Kentang (Solanum tuberosum L.) secara In Vitro (Toxicity Test of several Biofungicides in controlling Fusarium wilt (Fusarium oxysporum) in Potato Plants (Solanum tuberosum L.) by In Vitro) Ghea Dotulong1*), Stella Umboh1), Johanis Pelealu1), 1) Program Studi Biologi, FMIPA Universitas Sam Ratulangi, Manado 95115*Email korespondensi: [email protected] Diterima 9 Juli 2019, diterima untuk dipublikasi 10 Agustus 2019 Abstrak Tanaman kentang (Solanum tuberosum L.) adalah salah satu tanaman hortikultura yang sering mengalami penurunan dari segi produksi dan produktivitasnya, akibat adanya serangan penyakit layu yang salah satunya disebabkan oleh Fusarium oxysporum. Tujuan penelitian ini adalah mengidentifikasi toksisitas beberapa fungisida nabati dalam mengendalikan penyakit Layu Fusarium (F. oxysporum) pada tanaman kentang (Solanum tuberosum L.) secara In Vitro. Metode Penelitian yang digunakan yaitu metode umpan beracun. Data dianalisis dengan Rancangan Acak Lengkap (RAL) dengan Analisis Varian (ANAVA) yang dilanjutkan dengan menggunakan metode BNT (Beda Nyata Terkecil). Hasil Penelitian, diperoleh nilai toksisitas fungisida nabati tertinggi yaitu pada ekstrak daun sirsak dengan nilai HR (69,44%), kategori berpengaruh, ditandai dengan diameter koloni 2,75 cm (100ppm) dan yang terendah toksisitasnya yaitu pada ekstrak daun jeruk purut dengan nilai HR (49,81%), kategori cukup berpengaruh ditandai dengan diameter koloni 3,75 cm (25ppm). Semakin tinggi konsentrasi yang diujikan maka semakin tinggi toksisitas dari fungisida nabati yang diberikan.Kata Kunci: fungisida nabati, Fusarium oxysporum, tanaman kentang, In Vitro Abstract Potato plants (Solanum tuberosum L.) is one of the horticulture plants which often decreases in terms of production and productivity, due to the attack of wilt, one of which is caused by Fusarium oxysporum. The purpose of this study was to determine the toxicity of several biofungicides in controlling Fusarium wilt (F. oxysporum) in potato plants (Solanum tuberosum L.) in Vitro. The research method used was the In Vitro method with the poison bait method. Data were analyzed by Completely Randomized Design with Variant Analysis (ANAVA), followed by the BNT method. The results showed that the highest biofungicide toxicity value was soursop leaf extract with HR values (69.44%), influential categories, characterized by colony diameter 2.75 cm (100ppm) and the lowest toxicity, namely in kaffir lime leaf extract with a value of HR (49.81%), quite influential category was characterized by colony diameter of 3.75 cm (25ppm). The higher the concentration tested, the higher the toxicity of the biofungicide given.Keywords: biofungicides, Fusarium oxysporum, Potato Plants, In Vitro.

Inhabitation of Antagonistic Bacterium B96-II to Fusarium oxysporum f. sp. asparagi*

2010 ◽  
Vol 2009 (6) ◽  
pp. 861-865 ◽  
Author(s):  
Liping MA ◽  
Bianqing HAO ◽  
Jing WANG ◽  
Shu QIN ◽  
Xiongwu QIAO
Keyword(s):  
Fusarium Oxysporum ◽  
Antagonistic Bacterium

Effects of Fusarium oxysporum f. sp. cubense race 4 on microorganisms and enzyme activities in the rhizosphere soil of banana

2013 ◽  
Vol 38 (2) ◽  
pp. 173-176 ◽  
Author(s):  
Yong-hong HUANG ◽  
Shun LÜ ◽  
Chun-yu LI ◽  
Yue-rong WEI ◽  
Gan-jun YI
Keyword(s):  
Fusarium Oxysporum ◽  
Enzyme Activities ◽  
Rhizosphere Soil ◽  
Race 4

Inheritance of Resistance to Isolates of Fusarium oxysporum var. batatas in Burley Tobacco 1 , 3

Crop Science ◽  
1972 ◽  
Vol 12 (4) ◽  
pp. 522-525 ◽  
Author(s):  
J. L. Jones ◽  
C. L. Gupton ◽  
T. R. Terrill
Keyword(s):  
Fusarium Oxysporum ◽  
Inheritance Of Resistance ◽  
Burley Tobacco

EFFECTS OF PEANUT (ARACHIS HYPOGAEA L.) ROOT NODULATING BACTERIA, ISOLATED FROM ALGERIAN SAHARA SOILS, ON GROWTH AND BIOCONTROL OF FUSARIUM OXYSPORUM

2019 ◽  
Vol 75 (8) ◽  
Author(s):  
Sara Attab ◽  
Samia Bissati ◽  
Salim Azib ◽  
Nesrine Salhi
Keyword(s):  
Fusarium Oxysporum ◽  
Arachis Hypogaea ◽  
Arachis Hypogaea L ◽  
Algerian Sahara
Sign in / Sign up

Export Citation Format

Share Document