BIOCONTROL OF THE CHESTNUT BLIGHT FUNGUS<i>CRYPHONECTRIA PARASITICA</i>

Tattar, Terry A.; Berman, Phyllis; González, E. Y.; Mount, Mark S.; Dolloff, A. L.

doi:10.1080/03071375.1996.9747140

Cited by 22 publications

(5 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Antagonistic effects by this species have been documented against G. castaneae on grafting scions [ 38 ]. Moreover, some trials on chestnut plants demonstrated effectiveness by Trichoderma strains in reducing blight symptoms [ 34 , 62 , 101 ]. Finally, in other studies the evaluation of antagonistic properties against C. parasitica has been limited to in vitro assays; effectiveness at some extent was observed for strains of Pezicula cinnamomea [ 28 ], Trichoderma spp., Penicillium sp., Gnomoniopsis sp., E. nigrum and Umbelopsis isabellina [ 61 ], Penicillium spp.…”

Section: Occurrence Of Endophytic Fungi In Chestnuts and Ecologicamentioning

confidence: 99%

Endophytic Fungi and Ecological Fitness of Chestnuts

Nicoletti

Beccaro

Sękara

et al. 2021

Plants

View full text Add to dashboard Cite

Chestnuts (Castanea spp.) are plants of relevant economic interest in the agro-sylvicultural contexts of mountain regions throughout the temperate zone, particularly in the northern hemisphere. In recent years, several biological adversities have repeatedly endangered species belonging to this genus, calling for coordinated actions addressed to contrast their decline. These actions have mainly focused on the control of key pests/pathogens and the improvement of resistance/tolerance by the plant host, while the role of microorganisms as mediators of interactions between plants and the noxious agents has been less considered, essentially by reason of a limited knowledge on their ecological impact. In line with the increasing awareness of the basic importance of microbial symbionts in regulating plant fitness in both natural and crop contexts, this paper offers an overview on the occurrence and effects of endophytic fungi of chestnuts.

show abstract

Section: Occurrence Of Endophytic Fungi In Chestnuts and Ecologicamentioning

confidence: 99%

Endophytic Fungi and Ecological Fitness of Chestnuts

Nicoletti

Beccaro

Sękara

et al. 2021

Plants

View full text Add to dashboard Cite

show abstract

“…One speculative hypothesis to be tested could be the antagonistic activity of species of Trichoderma, which were found associated to several C. parasitica strains in this work and previously (Aghayeva et al, 2017). Tattar et al (1996) Representative gel results of the analyses are shown in Figures 1c and S4 (in Supporting information).…”

Section: Re Sults and Discussionmentioning

confidence: 67%

Detection of Cryphonectria hypovirus 1 in Cryphonectria parasitica isolates from Azerbaijan

et al. 2021

View full text Add to dashboard Cite

There is a large population of sweet chestnut (Castanea sativa Mill.) in northern Azerbaijan. Unfortunately, for several years, Caucasian chestnut orchards have been considered to be at risk of extinction due to insect pests and pathogens, amongst which Cryphonectria parasitica (Murr.) Barr, the causal agent of chestnut blight disease is highly significant and was detected in Azerbaijan in 2003(Aghayeva & Harrington, 2008. In Europe, recovery of C. sativa trees affected by chestnut blight was observed (Heiniger & Rigling, 1994) due to the infection of the fungus by a mycovirus, Cryphonectria hypovirus 1 (CHV1), a capsid-free RNA virus in the family Hypoviridae, which reduces mycelial growth, virulence and sporulation of the pathogen.In addition, CHV1 induces a noticeable reduction of the activity of laccase, a phenol oxidase containing copper, with many functions in pathogenic fungi during host colonization (Rigling et al., 1989). To our knowledge, the presence of CHV1 in C. parasitica has not been reported previously in Azerbaijan (Aghayeva et al., 2017; Forgia et al., 2021). Therefore, a small-scale survey in four of the eight Azerbaijan chestnut growing districts was conducted in July 2016 to determine whether CHV1 was present in C. parasitica strains from Azerbaijan. | MATERIAL S AND ME THODS | Cryphonectria parasitica sampling in chestnut growing districtsThe four chestnut growing districts where C. parasitica (Murr) Barr strains were collected, namely Zagatala (1), Shaki (2), Qabala (3) and Quba (4) are shown in Figure S1 (in Supporting information). Chestnut trees were visually inspected for chestnut blight disease symptoms and one bark sample (ca 2 x 2 cm) per canker per tree collected. Twenty bark samples were collected from twenty trees in each district, except in Quba, where eight samples were collected from eight trees. In total sixty-eight cankers were sampled.

show abstract

“…The strain produced DNase, lipase, ~-glucanase, and protease in the greatest quantities and in culture significantly reduced the growth of R. so/ani. Trichoderma, a fungus from a genus known for antagonism to C. parasitica (TATTAR, et al 1996), was also tested together with B. megaterium and R. solani. It was demonstrated that the culture filtrates of Trichoderma and B. megaterium did not significantly effect each other, which agrees with the results of this study, which found that though hyphae of the Trichoderma overgrew the B. megaterium colonies, the bacteria could be re-isolated from beneath the Trichoderma and were still viable.…”

Section: Discussionmentioning

confidence: 99%

“…Barr, a fungus carried on chestnut seedlings from Asia, to which the American chestnut had no resistance (TATTAR et al, 1996). In 1906 C. parasitica was discovered in New York City on chestnut trees in the Bronx Zoological Park.…”

Section: Introductionmentioning

confidence: 99%

“…Fungi antagonistic to C. parasitica have been the microorganisms most often isolated from samples of American chestnut bark, and, as a result, have been investigated frequently as potential biocontrol organisms (TATTAR, et al 1996). In the lone case of a bacterium being used in chestnut blight biocontrol, the organism, Bacillus subtilis, was cultured from xylem sap.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bacteria Found on American Chestnut Bark and Their Potential in Biocontrol of Chestnut Blight

Groome

Tattar

Mount

2001

Arboricultural Journal

View full text Add to dashboard Cite

The American chestnut (Castanea dentata [Marsh.] Borkh.) became susceptible to a blight fungus, Cryphonectria parasitica [Murr.] Bar, in the 1870s. This was imported on seedings from Asia, and American chestnut had no resistance to it. Since then, all attempts to eradicate or control the disease have met with very limited success or failure. This paper briefly reviews the history of the biocontrol of chestnut blight, from the use of 'hypovirulent' strains of C. parasitica to the use of a bacterium of Castanea spp. that are (I) antagonistic to C. parasitica and (2) can survive for an extensive time period on the bark of C. dentata. The study reveals that some Bacillus megaterium isolates from C. dentata bark may have potential in biological control. The results also provide an explanation for the success of mud packs in 'healing' cankers.

show abstract

BIOCONTROL OF THE CHESTNUT BLIGHT FUNGUSCRYPHONECTRIA PARASITICA

Cited by 22 publications

References 77 publications

Endophytic Fungi and Ecological Fitness of Chestnuts

Endophytic Fungi and Ecological Fitness of Chestnuts

Detection of Cryphonectria hypovirus 1 in Cryphonectria parasitica isolates from Azerbaijan

Bacteria Found on American Chestnut Bark and Their Potential in Biocontrol of Chestnut Blight

Contact Info

Product

Resources

About