Grass pea and pea phylogenetic relatedness reflected at Fusarium oxysporum host range

2021 ◽  
Vol 141 ◽  
pp. 105495
Author(s):  
Ana Margarida Sampaio ◽  
Diego Rubiales ◽  
Maria Carlota Vaz Patto
Keyword(s):  
Fusarium Oxysporum ◽  
Host Range ◽  
Grass Pea ◽  
Phylogenetic Relatedness

Fusarium oxysporum f.sp. cubense tropical race 4 (TR4).

2021 ◽  
Author(s):  
Claire Curry
Keyword(s):  
Fusarium Oxysporum ◽  
Host Range ◽  
The Other ◽  
Race 4

Abstract TR4 is one of only six strains strains of F. oxysporum f.sp. cubense (Foc) that attack Cavendish bananas (AAA genome). It is much more aggressive on Cavendish than SR4. TR4 was first observed in Taiwan in 1989 but its importance as an invasive was identified in the 1990s when it was isolated from damaged Cavendish plants in Indonesia and Malaysia (Buddenhagen, 2009). TR4 is considered one of the most destructive Foc strains because it has a wider host range than other strains, attacking the important cultivar Cavendish, but also all the other cultivars that are sensitive to Foc (Cheng et al., 2019).

scholarly journals Related mobile pathogenicity chromosomes in Fusarium oxysporum determine host range on cucurbits

2020 ◽  
Vol 21 (6) ◽  
pp. 761-776 ◽  
Author(s):  
Jiming Li ◽  
Like Fokkens ◽  
Peter van Dam ◽  
Martijn Rep
Keyword(s):  
Fusarium Oxysporum ◽  
Host Range

scholarly journals Race 3, a New and Highly Virulent Race of Fusarium oxysporum f. sp. niveum Causing Fusarium Wilt in Watermelon

Plant Disease ◽  
2010 ◽  
Vol 94 (1) ◽  
pp. 92-98 ◽  
Author(s):  
X. G. Zhou ◽  
K. L. Everts ◽  
B. D. Bruton
Keyword(s):  
Fusarium Oxysporum ◽  
Host Range ◽  
Fusarium Wilt ◽  
Citrullus Lanatus ◽  
Genetic Difference ◽  
Infested Soil ◽  
Reference Isolate ◽  
New Race ◽  
Race 2 ◽  
Highly Virulent

Three races (0, 1, and 2) of Fusarium oxysporum f. sp. niveum have been previously described in watermelon (Citrullus lanatus) based on their ability to cause disease on differential watermelon genotypes. Four isolates of F. oxysporum f. sp. niveum collected from wilted watermelon plants or infested soil in Maryland, along with reference isolates of races 0, 1, and 2, were compared for virulence, host range, and vegetative compatibility. Race identification was made on the watermelon differentials Sugar Baby, Charleston Gray, Dixielee, Calhoun Gray, and PI-296341-FR using a root-dip, tray-dip, or pipette inoculation method. All four Maryland isolates were highly virulent, causing 78 to 100% wilt on all differentials, one of which was PI-296341-FR, considered highly resistant to race 2. The isolates also produced significantly greater colonization in the lower stems of PI-296341-FR than a standard race 2 reference isolate. In field microplots, two of the isolates caused over 90% wilt on PI-296341-FR, whereas no disease was caused by a race 2 isolate. All four isolates were nonpathogenic on muskmelon, cucumber, pumpkin, and squash, confirming their host specific pathogenicity to watermelon. The Maryland isolates were vegetatively compatible to each other but not compatible with the race 2 isolates evaluated, indicating their genetic difference from race 2. This study proposes that the Maryland isolates belong to a new race, race 3, the most virulent race of F. oxysporum f. sp. niveum described to date.

scholarly journals A single gene in Fusarium oxysporum limits host range

2020 ◽  
Vol 22 (1) ◽  
pp. 108-116
Author(s):  
Jiming Li ◽  
Like Fokkens ◽  
Martijn Rep
Keyword(s):  
Fusarium Oxysporum ◽  
Host Range ◽  
Single Gene

Pathogenicity, Host Range and Influence of Temperature, Humidity and pH Levels on the Growth of Fusarium oxysporum f.sp. lentis

2021 ◽  
Author(s):  
Manju Kumari ◽  
Om Prakash Sharma ◽  
B.D.S. Nathawat
Keyword(s):  
Relative Humidity ◽  
Fusarium Oxysporum ◽  
Host Range ◽  
Disease Incidence ◽  
Pathogenicity Test ◽  
Potential Threat ◽  
Influence Of Temperature ◽  
Soil Inoculation ◽  
Inoculation Techniques

Background: Lentil is a vital nutritional source of protein in several parts of the world including India. The crop is susceptible to wilt which is a devastating soil-borne disease induced by the fungus Fusarium oxysporum f. sp. lentis. Insight of the potential threat Fusarium wilt can pose to lentils, a present study done on pathogenicity, host range and influence of temperature, humidity and pH levels on the growth of F. oxysporum f. sp. lentis.Methods: Ten isolates FOL-01 to FOL-10 of F. oxysporum f. sp. lentis (Fol) were isolated from wilted lentil plants that collected from different major lentil growing parts of Rajasthan. During 2017-18 a pathogenicity test was tested in pot house condition by seed and soil inoculation techniques for all isolates and epidomological factors evaluated in vitro conditions.Result: Results indicated that the Fol isolates represent a single race but differ in their aggressiveness on the susceptible cultivar L9-12. Pathogenicity test revealed clearly that Fol was associated with wilt symptoms and were pathogenic to lentil plants. A maximum percent disease incidence of 70.00 was showed by isolate FOL-02 in soil inoculation technique. In the morphological and cultural characterization, all the ten isolates showed various character in conidial frequency, colony color and growth pattern. Twenty plant species were tested to know the host range of Fol, out of these lentil, chickpea and pea show positive reaction with the pathogen. The influence of temperature, relative humidity and pH on the growth and sporulation of Fol was studied under in vitro conditions. Maximum mycelial growth and sporulation of the Fol were observed at 30°C, 6.0 pH and 60% relative humidity.

Hyphal interactions between a mycoparasite, Pythium nunn, and several soil fungi

1984 ◽  
Vol 30 (12) ◽  
pp. 1482-1487 ◽  
Author(s):  
R. Lifshitz ◽  
M. Dupler ◽  
Y. Elad ◽  
R. Baker
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Rhizoctonia Solani ◽  
Fusarium Oxysporum ◽  
Host Range ◽  
Phase Contrast ◽  
Soil Fungi ◽  
Limited Host Range ◽  
Pythium Nunn ◽  
Scanning Electron

The modes of hyphal interaction between a mycoparasite, Pythium nunn, and several soil fungi were studied by both phase-contrast and scanning-electron microscopy. In the zone of interaction, Pyth. nunn massively coiled around and subsequently lysed hyphae of Pyth. ultimum and Pyth. vexans. In contrast, Pyth. nunn penetrated and eventually parasitized hyphae of Rhizoctonia solani, Pyth. aphanidermatum, Phytophthora parasitica, and Phyto. cinnamomi by forming appressoriumlike structures. However, Pyth. nunn was not mycoparasitic against Fusarium oxysporum f.sp. cucumerinum or Trichoderma koningnii and was destroyed by T. harzianum and T. viride. These observations demonstrated that Pyth. nunn was a necrotrophic mycoparasite, with a limited host range and differential modes of action among suscepts.

A diversity of resistance sources to Fusarium oxysporum f. sp. pisi found within grass pea germplasm

2021 ◽  
Author(s):  
Ana Margarida Sampaio ◽  
Stefania Vitale ◽  
David Turrà ◽  
Antonio Di Pietro ◽  
Diego Rubiales ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Grass Pea ◽  
Resistance Sources

scholarly journals Effectiveness of different substrate materials to prepare Trichoderma harzianum based bio-fungicides to control foot and root rot (Fusarium oxysporum) of tomato

2015 ◽  
Vol 40 (2) ◽  
pp. 279-289 ◽  
Author(s):  
MI Faruk ◽  
ML Rahman ◽  
MM Rahman ◽  
R Islam ◽  
MA Rahman
Keyword(s):  
Fusarium Oxysporum ◽  
Rice Bran ◽  
Wheat Bran ◽  
Trichoderma Harzianum ◽  
Root Rot ◽  
Root Weight ◽  
Grass Pea ◽  
Tomato Seedling ◽  
Root Rot Disease ◽  
Rot Disease

An investigation was undertaken to evaluate the effectiveness Trichoderma harzianum based bio-fungicides multiplied on different substrates. The substrates was rice bran, wheat bran, grass pea bran and their combinations with mustard oilcake (MOC) were used to mass culture T. harzianum for the management of foot and root rot disease of tomato seedling caused by Fusarium oxysporum in seedbed. All combinations of carrier materials were found effective for preparing T. harzianum based bio-fungicides to promote germination, seedling growth and reducing pre-emergence and post-emergence mortality of tomato seedling under F. oxysporum inoculated seedbed soils. The shoot length, shoot weight, root length and root weight of tomato seedling were enhanced significantly by the application of different substrate materials of T. harzianum based bio-fungicides under F. oxysporum inoculated seedbed conditions. The individual (rice bran, wheat bran, grass pea bran) and combination of substrates (rice bran + wheat bran, rice bran + mustard oilcake, rice bran + wheat bran + MOC and wheat bran + grass pea bran + MOC) were equally suitable for mass culturing of effective T. harzianum bio-fungicides for the management of foot and root rot disease of tomato seedling in seedbed condition.Bangladesh J. Agril. Res. 40(2): 279-289 June 2015

Evidence for an expanded host range of Fusarium oxysporum f. sp. chrysanthemi

2018 ◽  
Vol 100 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Slavica Matić ◽  
Giovanna Gilardi ◽  
Maria Lodovica Gullino ◽  
Angelo Garibaldi
Keyword(s):  
Fusarium Oxysporum ◽  
Host Range

scholarly journals Current Status of Fusarium oxysporum Formae Speciales and Races

2019 ◽  
Vol 109 (4) ◽  
pp. 512-530 ◽  
Author(s):  
V. Edel-Hermann ◽  
C. Lecomte
Keyword(s):  
Fusarium Oxysporum ◽  
Host Range ◽  
Plant Species ◽  
Current Status ◽  
Economic Losses ◽  
Broad Host Range ◽  
Formae Speciales ◽  
Forma Specialis ◽  
Comprehensive Search ◽  
Fusarium Oxysporum Species Complex

The Fusarium oxysporum species complex includes both plant pathogenic and nonpathogenic strains, which are commonly found in soils. F. oxysporum has received considerable attention from plant pathologists for more than a century owing to its broad host range and the economic losses it causes. The narrow host specificity of pathogenic strains has led to the concept of formae speciales, each forma specialis grouping strains with the same host range. Initially restricted to one plant species, this host range was later found to be broader for many formae speciales. In addition, races were identified in some formae speciales, generally with cultivar-level specialization. In 1981, Armstrong and Armstrong listed 79 F. oxysporum formae speciales and mentioned races in 16 of them. Since then, the known host range of F. oxysporum has considerably increased, and many new formae speciales and races have been identified. We carried out a comprehensive search of the literature to propose this review of F. oxysporum formae speciales and races. We recorded 106 well-characterized formae speciales, together with 37 insufficiently documented ones, and updated knowledge on races and host ranges. We also recorded 58 plant species/genera susceptible to F. oxysporum but for which a forma specialis has not been characterized yet. This review raises issues regarding the nomenclature and the description of F. oxysporum formae speciales and races.

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