Development of a strain-specific SCAR marker for the detection of Trichoderma atroviride 11, a biological control agent against soilborne fungal plant pathogens

2001 ◽  
Vol 38 (6) ◽  
pp. 343-350 ◽  
Author(s):  
M. Rosa Hermosa ◽  
Isabel Grondona ◽  
José María Díaz-Mínguez ◽  
Enrique A. Iturriaga ◽  
Enrique Monte
Keyword(s):  
Biological Control ◽  
Plant Pathogens ◽  
Scar Marker ◽  
Biological Control Agent ◽  
Control Agent ◽  
Trichoderma Atroviride ◽  
Fungal Plant Pathogens

A pipeline for the genetic improvement of a biological control agent enhances its potential for controlling soil-borne plant pathogens

2021 ◽  
Vol 152 ◽  
pp. 104460
Author(s):  
Marcio Vinicius de Carvalho Barros Côrtes ◽  
Maythsulene Inacio de Sousa Oliveira ◽  
Jackeline Rossetti Mateus ◽  
Lucy Seldin ◽  
Valacia Lemes Silva-Lobo ◽  
...  
Keyword(s):  
Biological Control ◽  
Genetic Improvement ◽  
Plant Pathogens ◽  
Biological Control Agent ◽  
Control Agent

scholarly journals Rhizosphere and endophytic colonisation of ryegrass and sweet corn roots by the isolate Trichoderma atroviride LU132 at different soil pHs

2016 ◽  
Vol 69 ◽  
pp. 78-85 ◽  
Author(s):  
N. Cripps-Guazzone ◽  
E.E. Jones ◽  
L.M. Condron ◽  
K.L. McLean ◽  
A. Stewart ◽  
...  
Keyword(s):  
Biological Control ◽  
Soil Ph ◽  
Sweet Corn ◽  
Biological Control Agent ◽  
Abiotic Factors ◽  
Control Agent ◽  
Trichoderma Atroviride ◽  
Biological Control Agents ◽  
Corn Roots ◽  
Ph Range

The colonisation of plant roots by biological control agents is dependent on abiotic factors one of the most important being soil pH The rhizosphere and endophytic colonisation of ryegrass and sweet corn roots by the biological control agent Trichoderma atroviride LU132 were assessed in a pot experiment with nonsterile soil at three different pHs (55 65 and 75) T atroviride LU132 colonised the roots of both plants regardless of the soil pH with 113147 x 106 CFU/g of dry rhizosphere soil (DRS) for ryegrass and 136350x105 CFU/g DRS for sweet corn T atroviride LU132 was able to colonise both plants endophytically regardless of soil pH However the isolate was recovered from entire ryegrass roots but only from the upper parts of sweet corn roots These experiments demonstrated that T atroviride LU132 colonised the rhizosphere and roots within a soil pH range common to most NZ soils which is a desirable trait for biological control agents

scholarly journals Comparison of the behaviour of a transformed hygromycin resistant strain of Trichoderma atroviride (M1057hygR) with the wildtype strain (M1057)

2004 ◽  
Vol 57 ◽  
pp. 72-76 ◽  
Author(s):  
K.L. McLean ◽  
S.L. Dodd ◽  
B.E. Sleight ◽  
R.A. Hill ◽  
A. Stewart
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Field Studies ◽  
Control Agent ◽  
White Rot ◽  
Trichoderma Atroviride ◽  
Wildtype Strain ◽  
Sclerotium Cepivorum ◽  
Significant Difference ◽  
Rhizosphere Competence

The biocontrol isolate Trichoderma atroviride M1057 and a transformed hygromycin resistant biotype (M1057hygR) were compared using biological control rhizosphere competence and antibiosis studies to determine whether the transformed biotype performed in a similar manner to the wildtype strain In an onion growth chamber trial using soil naturally infested with the onion white rot pathogen Sclerotium cepivorum there was no significant difference (P>005) in the level of disease control given by the two T atroviride strains Similarly populations of T atroviride M1057 and M1057hygR were equivalent (P>005) in the rhizosphere of onion seedlings There was no significant difference (P>005) between the mycelial growth rates of S cepivorum when grown on agar amended with culture filtrate of T atroviride M1057 and M1057hygR Thus T atroviride M1057hygR has similar biological attributes to the wildtype isolate and can be used in future field studies looking at the population ecology of the biological control agent

scholarly journals The Mode of Action of Bacillus Species against Fusarium graminearum, Tools for Investigation, and Future Prospects

Toxins ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 606 ◽  
Author(s):  
Khayalethu Ntushelo ◽  
Lesiba Klaas Ledwaba ◽  
Molemi Evelyn Rauwane ◽  
Oluwafemi Ayodeji Adebo ◽  
Patrick Berka Njobeh
Keyword(s):  
Biological Control ◽  
Fusarium Graminearum ◽  
Plant Pathogens ◽  
Biological Control Agent ◽  
Control Agent ◽  
Fungal Species ◽  
Bacillus Species ◽  
Future Studies ◽  
Biochemical Processes ◽  
Analytical Platforms

Fusarium graminearum is a pervasive plant pathogenic fungal species. Biological control agents employ various strategies to weaken their targets, as shown by Bacillus species, which adopt various mechanisms, including the production of bioactive compounds, to inhibit the growth of F. graminearum. Various efforts to uncover the antagonistic mechanisms of Bacillus against F. graminearum have been undertaken and have yielded a plethora of data available in the current literature. This perspective article attempts to provide a unified record of these interesting findings. The authors provide background knowledge on the use of Bacillus as a biocontrol agent as well as details on techniques and tools for studying the antagonistic mechanism of Bacillus against F. graminearum. Emphasizing its potential as a future biological control agent with extensive use, the authors encourage future studies on Bacillus as a useful antagonist of F. graminearum and other plant pathogens. It is also recommended to take advantage of the newly invented analytical platforms for studying biochemical processes to understand the mechanism of action of Bacillus against plant pathogens in general.

scholarly journals The Inability of Spotted Lanternfly (Lycorma delicatula) to Vector a Plant Pathogen between its Preferred Host, Ailanthus altissima, in a Laboratory Setting

Insects ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 515
Author(s):  
Rachel K. Brooks ◽  
Ashley Toland ◽  
Andrew C. Dechaine ◽  
Thomas McAvoy ◽  
Scott Salom
Keyword(s):  
Biological Control ◽  
Plant Pathogens ◽  
Biological Control Agent ◽  
Life Stage ◽  
Later Life ◽  
Control Agent ◽  
Ailanthus Altissima ◽  
Future Research ◽  
Laboratory Setting ◽  
Lycorma Delicatula

With the recent introduction of the non-native spotted lanternfly (Lycorma delicatula) to the USA, research and concern regarding this insect is increasing. Though L. delicatula is able to feed on many different plant species, its preference for the invasive tree-of-heaven (Ailanthus altissima) is apparent, especially during its later life stage. Therefore, management focused on A. altissima control to help limit L. delicatula establishment and population growth has become popular. Unfortunately, the control of A. altissima is difficult. Verticillium nonalfalfae, a naturally occurring vascular-wilt pathogen, has recently received attention as a potential biological control agent. Therefore, we studied if L. delicatula fourth instars or adults could vector V. nonalfalfae from infected A. altissima material to healthy A. altissima seedlings in a laboratory setting. We were unable to re-isolate V. nonalfalfae from the 45 A. altissima seedlings or from the 225 L. delicatula utilized in this experiment. We therefore, found no support that L. delicatula could effectively vector this pathogen between A. altissima in laboratory conditions. Since L.delicatula’s ability to vector V. nonalfalfae has implications for the dissemination of both this beneficial biological control and other similar unwanted plant pathogens, future research is needed to confirm these findings in a field setting.

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