Biocontrol and Bioremediation: Two Areas of Endophytic Research Which Hold Great Promise

Griffin, Mary Ruth

doi:10.1007/978-81-322-1575-2_14

Cited by 18 publications

(8 citation statements)

References 91 publications

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“…() suggested that plants should be examined for their “natural endophytes” because “plants often will cultivate beneficial microbes … known to be capable of colonizing the plant of interest”. They and others have indicated that natural endophytes that are adapted to the target plant may provide better disease control than microbes isolated from other plant species (Cook, ; Larkin & Fravel, ; Griffin, ; Eljounaidi et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Significant in vitro antagonism of the laurel wilt pathogen by endophytic fungi from the xylem of avocado does not predict their ability to control the disease

2018

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The ascomycete Raffaelea lauricola causes laurel wilt, a lethal vascular disease of avocado, Persea americana, and other members of the Lauraceae plant family. Few effective control measures for laurel wilt exist and new measures are needed. In this study, biological control of the disease with endophytic fungi from avocado was examined. Thirty-two endophytes (24 operational taxonomic units or OTUs) isolated from the xylem of healthy trees (the infection court of R. lauricola) were evaluated against R. lauricola with in vitro dual-culture assays. Nine OTUs that showed strong in vitro antagonism of the pathogen were tested in planta against laurel wilt. In three greenhouse experiments, grafted avocado plants of Simmonds or Russell cultivars, which are both susceptible to laurel wilt, were inoculated with endophytes and, after 10-16 days, inoculated with the same isolate of R. lauricola that was used in the in vitro assays. Within 14 days of inoculation with R. lauricola, laurel wilt developed in plants that were not treated with endophytes (positive controls) but also developed in endophyte-treated plants to the extent observed in the positive controls (P = 0.05). The pathogen colonized plants rapidly and systemically, but endophytes generally did not colonize xylem more than 2 cm above the point at which plants were inoculated. Although the tested endophytes strongly antagonized the pathogen in vitro, this did not translate to an ability to reduce development of laurel wilt. The management of laurel wilt and other plant diseases with fungal endophytes is discussed.

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Section: Discussionmentioning

confidence: 99%

Significant in vitro antagonism of the laurel wilt pathogen by endophytic fungi from the xylem of avocado does not predict their ability to control the disease

2018

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“…Even so, limitations could be encountered, and it might be ineffective when disease is caused by a high presence of pathogens, which was further buttressed in the study of Lahlali [ 48 ]. Strategies to solve this problem include (i) prior and extensive inoculation of endophytes to host plants through various approaches, such as seed coating, soil drench, root dip, and foliar spray application and (ii) a combination of suitable endophytes or microbes instead of individual ones [ 49 , 50 ].…”

Section: Multifunctions Of Endophytes and Their Metabolites In Plant ...mentioning

confidence: 99%

The Multifunctions and Future Prospects of Endophytes and Their Metabolites in Plant Disease Management

et al. 2022

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Endophytes represent a ubiquitous and magical world in plants. Almost all plant species studied by different researchers have been found to harbor one or more endophytes, which protect host plants from pathogen invasion and from adverse environmental conditions. They produce various metabolites that can directly inhibit the growth of pathogens and even promote the growth and development of the host plants. In this review, we focus on the biological control of plant diseases, aiming to elucidate the contribution and key roles of endophytes and their metabolites in this field with the latest research information. Metabolites synthesized by endophytes are part of plant disease management, and the application of endophyte metabolites to induce plant resistance is very promising. Furthermore, multi-omics should be more fully utilized in plant–microbe research, especially in mining novel bioactive metabolites. We believe that the utilization of endophytes and their metabolites for plant disease management is a meaningful and promising research direction that can lead to new breakthroughs in the development of more effective and ecosystem-friendly insecticides and fungicides in modern agriculture.

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“…The pathogenic nature of the fungus is the main concern in agricultural production because of diseases caused on crops such as Fusarium head blight, Fusarium wilt, etc. 2 .…”

mentioning

confidence: 99%

“…Keywords: Agronomic, biofortification, Triticum aestivum L., red and lateritic soil, zinc deficiency. ZINC (Zn) deficiency affects more than one-third of the human population in the world 1,2 . Its deficiency in soils of India is widespread 1,3,4 and crops grown in these soils suffer from poor or no yield.…”

mentioning

confidence: 99%

Occurrence of <i>Fusarium</i> Species in Asymptomatic Barley Plants Grown in Field Conditions Under Differential Phosphate Regimes

Echeverría¹,

Moreno²,

Suarez³

2018

Current Science

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Occurrence of genus Fusarium as endophytes in roots of healthy barley plants cultivated in fields under two levels of phosphorous (P) was examined. F. avenaceum, F. graminearum, F. konzum, F. oxysporum, F. sacchari, F. scirpi, F. solani were isolated from asymptomatic surface sterilized root tissues. F. konzum and F. solani were only present in the roots of fertilized plants, whereas F. sacchari was present in unfertilized plants. F. scirpi was isolated in highest frequency and relative density, and was higher under P deficiency suggesting that P availability would determinate the occurrence of this species, suggesting the possibility of their association with stressed plants. This is the first report on the occurrence of Fusarium spp. as endophytes in healthy barley plants. However, it remains to be determined whether Fusarium spp. isolated are nonpathogenic forms and beneficial to barley plants or latent pathogens that could produce disease symptoms in other conditions.

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Biocontrol and Bioremediation: Two Areas of Endophytic Research Which Hold Great Promise

Cited by 18 publications

References 91 publications

Significant in vitro antagonism of the laurel wilt pathogen by endophytic fungi from the xylem of avocado does not predict their ability to control the disease

Significant in vitro antagonism of the laurel wilt pathogen by endophytic fungi from the xylem of avocado does not predict their ability to control the disease

The Multifunctions and Future Prospects of Endophytes and Their Metabolites in Plant Disease Management

Occurrence of <i>Fusarium</i> Species in Asymptomatic Barley Plants Grown in Field Conditions Under Differential Phosphate Regimes

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