scholarly journals Potential of Endophytic Fungi Isolated from Cotton Roots for Biological Control against Verticillium Wilt Disease

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0170557 ◽  
Author(s):  
Yuan Yuan ◽  
Hongjie Feng ◽  
Lingfei Wang ◽  
Zhifang Li ◽  
Yongqiang Shi ◽  
...  
Keyword(s):  
Biological Control ◽  
Endophytic Fungi ◽  
Verticillium Wilt ◽  
Wilt Disease

scholarly journals Potensi Cendawan Endofit dari Bunga Bawang Dayak untuk Menekan Pertumbuhan Ralstonia solanacearum pada Tanaman Tomat

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Putri Wulan Cahyani ◽  
Noor Laili Aziza ◽  
Yusriadi Marsuni
Keyword(s):  
Biological Control ◽  
Growth Rate ◽  
Endophytic Fungi ◽  
Bacterial Wilt ◽  
Wilt Disease ◽  
Plant Diseases ◽  
Tomato Plants ◽  
Bacterial Wilt Disease ◽  
Randomized Design ◽  
Completely Randomized Design

Cultivation of tomato plants (Lycopesicum esculentum Mill.) Is often exposed to plant diseases. One of the diseases that often attacks tomato plants is bacterial wilt disease caused by R. solanacearum. Therefore, it is necessary to have biological control with the application of an antagonistic agent, namely the provision of endophytic fungi from dayak onion flowers. This study aims to determine the types of endophytic fungi in dayak onion flowers and to determine the potential of endophytic fungi in suppressing the growth of R. solanacearum. This research was conducted from February to May 2020, taking samples of dayak onion flowers in the Experimental Field of the Faculty of Agriculture and samples of symptomatic tomato plants on the Karang Anyar Farmer Group's land then continued with isolation, purification, identification, and antagonistic testing at the Production Laboratory of the Faculty of Agriculture, Lambung Mangkurat University, Banjarbaru. The method used in this study was a one-factor completely randomized design (CRD) with nine treatments, namely C1 = endophytic fungi A + R. solanacearum, C2 = endophytic fungi B + R. solanacearum, C3 = endophytic fungi F + R. solanacearum, C4 = endophytic fungi G + R. solanacearum, C5 = endophytic fungi I + R. solanacearum, C6 = endophytic fungi J + R. solanacearum, C7 = endophytic fungi K + R. solanacearum, C8 = fungi endophytic N + R. solanacearum, and C9 = endophytic fungi P + R. solanacearum and repeated three times. This study used a comparison, namely control with three replications, in order to obtain 30 experimental units. The results of this study that endophytic fungi from dayak onion flowers have the potential to suppress the growth of R. solanacearum. Based on the research, there were 17 endophytic fungi from dayak onion flowers with nine endophytic fungi which had the fastest growth rate of radius. Fungi with the genus Colletotrichum sp., Mucor sp., and Papulaspora sp. has the potential to suppress the growth of R. solanacearum with moderate to strong percentage of inhibition.

scholarly journals Biological Control of Tomato Verticillium Wilt Disease by Talaromyces Flavus

2010 ◽  
Vol 50 (3) ◽  
Author(s):  
Laleh Naraghi ◽  
Asghar Heydari ◽  
Saeed Rezaee ◽  
Mohammad Razavi ◽  
Hanieh Jahanifar ◽  
...  
Keyword(s):  
Biological Control ◽  
Verticillium Wilt ◽  
Wilt Disease ◽  
Talaromyces Flavus

scholarly journals Die Verticillium-Welke – eine Option zur Bekämpfung des Götterbaumes in der Schweiz?

2016 ◽  
Vol 167 (5) ◽  
pp. 249-257 ◽  
Author(s):  
Mélanie Siegrist ◽  
Ottmar Holdenrieder
Keyword(s):  
Biological Control ◽  
North America ◽  
Verticillium Wilt ◽  
Woody Plants ◽  
Molecular Genetic ◽  
Wilt Disease ◽  
Ailanthus Altissima ◽  
Agricultural Crops ◽  
Wide Spread ◽  
Verticillium Dahlia

The Verticillium wilt – an option for control of Ailanthus in Switzerland? Ailanthus (Ailanthus altissima), a species native to China, is becoming increasingly invasive in Australia, Europe and North America. More and more frequently, the tree is also found in Swiss forests and, due to its high competitiveness, is regarded as an invasive species. In Europe and North America, A. altissima is occasionally affected by a wilt disease, which is caused by several species of the genus Verticillium. The precise identity of the pathogens was only recently clarified by molecular genetic methods. In addition to Verticillium dahlia, a wide spread fungus mainly affecting agricultural crops as well as woody plants, the recently described species Verticillium non alfalfae was detected on dying A. altissima trees. Individual genotypes of this pathogen in North America show high host specificity and are already used for biological control of A. altissima in US forests. Our article summarizes the current lit er ature on Ailanthus and the Verticillium wilt and furthermore discusses the question of whether the use of V. nonalfalfae as a mycoherbicide should also be considered for Switzerland.

scholarly journals Evaluation of Pseudomonas and Bacillus Bacterial Antagonists for Biological Control of Cotton Verticillium Wilt Disease

2013 ◽  
Vol 53 (2) ◽  
pp. 154-157 ◽  
Author(s):  
Mahdiyeh Mansoori ◽  
Asghar Heydari ◽  
Nader Hassanzadeh ◽  
Saeed Rezaee ◽  
Laleh Naraghi
Keyword(s):  
Biological Control ◽  
Verticillium Wilt ◽  
Cultural Practices ◽  
Wilt Disease ◽  
Bacterial Suspension ◽  
Bacterial Strains ◽  
Bacterial Antagonists ◽  
Resistant Varieties ◽  
Bacillus Spp ◽  
Cotton Seeds

Abstract Verticillium wilt is considered the most important disease of cotton in the world, including Iran. Cultural practices and the use of resistant varieties are the most common strategies used to control Verticillium wilt of cotton. These strategies are not always available or effective. In recent years, biological control using fungal and bacterial antagonists, has been applied to control some cotton diseases including damping-off. In this study, we investigated the possibility of biological control of Verticillium wilt of cotton using bacterial antagonists. Suspension of eight bacterial strains of Pseudomonas fluorescens and Bacillus spp. isolated from different rhizospheric soils and plant roots in the Iranian cotton fields, were prepared with a concentration of 108 cfu/ml. Ten cotton seeds (cv Varamin) were then coated with each bacterial suspension and were planted in soil pre-inoculated with Verticillium dahliae microsclerotia. The efficacy of bacterial antagonists in reducing wilt disease was evaluated by determination of the disease index in different treatments. The results indicated that most isolates were effective in reducing disease (compared to the untreated control) 90 days after sowing. Isolates B5, B6, B2, B7, and B3 were the most effective, respectively, in reducing wilt index. In contrast, isolates B1, B4, and B8 did not significantly reduce the disease. In general, P. fluorescens isolates were more effective than Bacillus isolates. This study suggests that bacterial antagonists might be potential biological control agents of cotton.

scholarly journals Characterization and virulence of Fusarium oxysporum f. sp. cubense cause wilt disease in banana plants and its biological control using endophytic fungi Trichoderma spp. at West Nusa Tenggara, Indonesia

2021 ◽  
Vol 886 (1) ◽  
pp. 012016
Author(s):  
I Made Sudantha
Keyword(s):  
Biological Control ◽  
Fusarium Oxysporum ◽  
Endophytic Fungi ◽  
Plant Tissue ◽  
Endemic Area ◽  
Wilt Disease ◽  
Banana Plant ◽  
Trichoderma Spp ◽  
Different Characteristics

Abstract One of the obstacles in developing banana plants is the presence of Fusarium wilt disease caused by the fungus Fusarium oxysporum f. sp cubense. This fungus is difficult to control because it has a survival structure in the form of chlamydospores that can survive as a saprophyte. One way to control it is biologically using the antagonist endophytic fungi Trichoderma spp. This study aimed to determine the characteristics and virulence of the fungus F. oxysporum f. sp cubense and its control using the endophytic fungi Trichoderma spp. The study used an exploratory method carried out in an endemic area of Fusarium wilt disease to isolate the fungus F. oxysporum f. sp cubense and the endophytic fungi Trichoderma spp. in the banana plant tissue. The research was continued in the laboratory, in the greenhouse, and in the field to test the effectiveness of the fungi Trichoderma spp. The results showed that seven isolates of the fungus F. oxysporum f sp cubense with different characteristics. Six isolates of the endophytic fungi Trichoderma spp. which is effective in suppressing the growth of the fungus F. oxysporum f. sp cubense, namely T. harzianum, T. koningii, T. aureoviride, T. hamatum, T. viride, and T. piluliferum.

RESISTANCE TO VERTICILLIUM WILT IN F1 GENERATIONS OF SELF-FERTILIZED SPECIES OF FRAGARIA

1958 ◽  
Vol 36 (3) ◽  
pp. 297-299 ◽  
Author(s):  
W. Newton ◽  
M. C. J. van Adrichem
Keyword(s):  
Verticillium Wilt ◽  
Wilt Disease ◽  
Fragaria Chiloensis

The F1 generation of selfed plants of Fragaria chiloensis, F. ovalis, and F. yukonensis contained seedlings resistant to the verticillium wilt disease. Selfed F. orientalis plants yielded seedlings that carried considerable tolerance but selfed F. vesca, F. bracteata, and F. virginiana plants yielded neither tolerant nor resistant seedlings. Asexually propagated plants of the seven species were all susceptible to the disease.

scholarly journals Streptomyces sp.: Characterization, Identification and Its Potential as a Ralstonia solanacearum Biological Control Agent in vitro

2019 ◽  
Vol 2 (3) ◽  
pp. 89-96 ◽  
Author(s):  
Rachmad Saputra ◽  
Triwidodo Arwiyanto ◽  
Arif Wibowo
Keyword(s):  
Biological Control ◽  
Bacterial Wilt ◽  
Ralstonia Solanacearum ◽  
Biological Control Agent ◽  
Wilt Disease ◽  
Molecular Characteristics ◽  
Streptomyces Sp ◽  
Bacterial Wilt Disease ◽  
Wide Range

Streptomyces sp. bacteria have the potential to produce antibiotic compounds, which are one of the mechanisms that are widely used in biological control. However, in general, biological control mechanisms also occur through competition, cell wall degradation and induced resistance. This study was aimed to determine the physiological, biochemical and molecular characteristics of two isolates of Streptomyces sp. (S-4 and S16 isolates) isolated from the tomatoes roots, and to find out their ability to control Ralstonia solanacearum, which causes bacterial wilt disease on a wide range of hosts. The results showed both Streptomyces sp. isolates had several different physiological and biochemical characteristics and had a different ability to inhibit R. solanacearum in vitro. Streptomyces sp. S-16 isolate had a high similarity with Streptomyces diastaticus subsp. ardesiacus strain NRRL B-1773T based on the molecular identification results. Further research needs to be done to see the potential inhibition of the two Streptomyces isolates in inhibiting the development of bacterial wilt disease in tomato plants caused by R. solanacearum.

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