Screening, identification, and colonization of fungal root endophytes against Dematophora necatrix: a ubiquitous pathogen of fruit trees

Pal, Joginder; Sharma, Satish Kumar; Devi, S. Renuga; Sharma, R. K.; Raj, Himanshu; Karn, Monika; Verma, Shalini; Vedukola, Pulla Reddy; Sharma, Anju

doi:10.1186/s41938-020-00312-2

Cited by 16 publications

(8 citation statements)

References 20 publications

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“…Root colonization assay revealed maximum endosphere and rhizosphere colonization with Crinipellis tabtim strain M8. Also, confocal microscopic illustrations of transverse sections of root cells tenanted by fungal endophytes Crinipellis tabtim strain M8 as compared to untreated control suggested the persistence and establishment of endophytes in the endosphere of apple seedlings, shown in Figure 1 [47].…”

Section: Exploitation Of Microbial Endophytes As Ard Management Strategymentioning

confidence: 96%

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Role of Endophytes in Apple Replant Disease

Sharma¹,

Pal²,

Sharma³

et al. 2023

Apple Cultivation - Recent Advances

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Apple replant disease (ARD) is a major problem in all the apple-growing areas of the world. It is a complex problem. The exact cause of the problem is unknown, but soil biotic factors play a major role. The repeated cultivation of same crop on same land and exhaustion of nutrients of soil, persistence of soil-borne pathogens and changes in the pH of soil. Symptoms include stunting of tree growth with short internodes, small and light green rosette leaves, development of few lateral or feeder roots, underdeveloped root systems, decayed and discolored roots, poor establishment and severe disease results in the death of young trees and, sometimes, whole orchards. The endophytes provide direct benefits to host plants as they live in close proximity. Once they enter inside the host tissue they get easily established as they feel no competition with other microorganisms. Endophytes have the capacity to produce different secondary metabolites, which saves the host plants from biotic and abiotic stresses the host plants become resistant to both biotic and abiotic stresses. An interesting facet of the interaction between endophytes and their hosts is the capacity of many microorganisms to improve the plant’s resistance by providing several bioactive metabolites. Therefore, the exploitation of soil microbial endophytes for the management of ARD is an important strategy.

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Section: Exploitation Of Microbial Endophytes As Ard Management Strategymentioning

confidence: 96%

“…(a) Crinipellis tabtim strain M8. (b) Control by confocal laser scanning microscopy (CLSM by Pal et al[47]).…”

mentioning

confidence: 99%

Role of Endophytes in Apple Replant Disease

Sharma¹,

Pal²,

Sharma³

et al. 2023

Apple Cultivation - Recent Advances

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“…Various fungal species have been used as biocontrol agents against R. necatrix (Table 1). These antagonistic fungi reduce mycelial growth in vitro and decrease disease symptoms caused by R. necatrix in different fruit tree crops such as apples, avocados, and apricots (Cruz et al, 2014;Pal et al, 2020;Ruano-Rosa et al, 2018). Among fungal genera investigated as biocontrol agents, Trichoderma has received considerable attention and has been successfully implemented as a BCA against R. necatrix in apple orchards (Golafrouz et al, 2020;Pasini et al, 2016;Sztejnberg et al, 1987) and avocado plants (Ruano Rosa and López-Herrera, 2009;Ruano-Rosa et al, 2018).…”

Section: Fungal Antagonistmentioning

confidence: 99%

“…Among fungal genera investigated as biocontrol agents, Trichoderma has received considerable attention and has been successfully implemented as a BCA against R. necatrix in apple orchards (Golafrouz et al, 2020;Pasini et al, 2016;Sztejnberg et al, 1987) and avocado plants (Ruano Rosa and López-Herrera, 2009;Ruano-Rosa et al, 2018). A recent study by Pal et al (2020) observed that the endophytic fungi Aspergillus aculeatus (strain C2) showed a maximum mycelial inhibition of 81.48%, and Crinipellis tabtim (strain M8) reduced disease incidence by up to 84.95% under field conditions in apple orchards. Furthermore, nonpathogenic R. necatrix isolates Rn12 and 29 have shown to successfully regulate R. necatrix pathogens (Arjona-López and López-Herrera, 2020).…”

Section: Fungal Antagonistmentioning

confidence: 99%

Current Status and Future Prospects of White Root Rot Management in Pear Orchards: A Review

Sawant¹,

Choi²,

Song

et al. 2021

Res. Plant Dis

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The current social demand for organic, sustainable, and eco-friendly approaches for farming, while ensuring the health and productivity of crops is increasing rapidly. Biocontrol agents are applied to crops to ensure biological control of plant pathogens. Research on the biological control of white root rot disease caused by a soil-borne pathogen, Rosellinia necatrix, is limited in pears compared to that in apple and avocado. This pathogenic fungus has an extensive host range, and symptoms of this disease include rotting of roots, yellowing and falling of leaves, wilting, and finally tree death. The severity of the disease caused by R. necatrix , makes it the most harmful fungal pathogen infecting the economical fruit tree species, such as pears, and is one of the main limiting factors in pear farming, with devastating effects on plant health and yield. In addition to agronomic and cultural practices, growers use chemical treatments to control the disease. However, rising public concern about environmental pollution and harmful effects of chemicals in humans and animals has facilitated the search for novel and environmentally friendly disease control methods. This review will briefly summarize the current status of biocontrol agents, ecofriendly methods, and possible approaches to control disease in pear orchards.

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“…[ 16 , 17 , 18 ], Entoleuca sp. [ 19 , 20 ], non-pathogenic R. necatrix [ 21 ], Crinipellis tabtim or Fusarium equiseti [ 22 ]; antagonistic rhizobacteria, such as Pseudomonas spp. or Bacillus spp.…”

Section: Introductionmentioning

confidence: 99%

Susceptibility of Novel Promising Citrus Rootstocks to White Root Rot

Arjona-López

Gmitter

Romero-Rodríguez

et al. 2022

Plants

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Citrus is one of the most important fruit crops in Mediterranean countries such as Spain, which is one of the main citrus-producing countries worldwide. Soil-borne pathogens, such as Rosellinia necatrix, are relevant limiting biotic factors in fruit trees, due to their tricky management. This fungus is a polyphagous plant pathogen with worldwide distribution, causing white root rot in woody crops, including citrus trees in Spain. The objective of this study was to evaluate the tolerance of new plant material against R. necatrix infection. Therefore, plants of 12 different citrus rootstocks were inoculated with one R. necatrix isolate. During the assay, and periodically, above-ground symptoms and chlorophyll content were evaluated. At the end of the experiment, leaf area and plant biomass measures were obtained. Rootstocks B11R5T64 and B11R5T60 achieved the lowest disease incidence of symptoms and reduction of biomass, and were similar to their respective controls in chlorophyll content and leaf area. Carrizo citrange, CL-5146 and UFR-5 were the most affected rootstocks in symptoms and biomass reduction. This work provides information about R. necatrix-tolerant citrus rootstocks, which can constitute a new integrated, sustainable and effective long-term strategy to avoid white root rot.

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Screening, identification, and colonization of fungal root endophytes against Dematophora necatrix: a ubiquitous pathogen of fruit trees

Cited by 16 publications

References 20 publications

Role of Endophytes in Apple Replant Disease

Role of Endophytes in Apple Replant Disease

Current Status and Future Prospects of White Root Rot Management in Pear Orchards: A Review

Susceptibility of Novel Promising Citrus Rootstocks to White Root Rot

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