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Root-knot nematodes (Meloidogyne spp.) are sedentary endoparasites that cause severe economic losses to agricultural crops globally. Due to the regulations of the European Union on the application of nematicides, it is crucial now to discover eco-friendly control strategies for nematode management. Biocontrol is one such safe and reliable method for managing these polyphagous nematodes. Biocontrol agents not only control these parasitic nematodes but also improve plant growth and induce systemic resistance in plants against a variety of biotic stresses. A wide range of organisms such as bacteria, fungi, viruses, and protozoans live in their natural mode as nematode antagonists.
Species Name | Concentration Used | Reduction in Diseases/Result | Crop | Nematode Managed | References |
---|---|---|---|---|---|
Pseudomonas jessenii Verhille, et al. 1999, and Pseudomonas synxantha (Ehrenberg 1840) Holland 1920 | 25%, 50%, 75%, 100% | All concentrations greater than 75% resulted in 100% mortality of J2. | Tomato (Solanum lycopersicum L.) | Meloidogyne incognita | [9] |
Bacillus isolates (BC 27, BC 29, and BC 31) | 108 spores mL−1 | BC 27 and BC 29 caused 100% mortality after 24 h. BC 31 was less effective compared to BC 27 and BC 29, as it caused only 84% mortality after 24 h. | Soybean (Glycine max (L.) Merr.) | Meloidogyne javanica | [10] |
Pasteuria penetrans (ex Thorne 1940) Sayre and Starr 1986 | 50% spore suspension | Number of J2/100 cm3 was reduced to 9.2 in soil compared to 16.6 in control. | Babchi (Psoralea corylifolia L.) | Meloidogyne incognita | [11] |
Pseudomonas fluorescens (pf1) (Flugge 1886) Migula, 1895 |
107–109 CFU/mL | 69.8% reduction of Meloidogyne incognita | Cowpea (Vigna unguiculata (L.) Walp.) | Meloidogyne incognita | [12] |
Bacillus subtilis (bs2) (Ehrenberg 1835) Cohn 1872 | 107–109 CFU/mL | 82% reduction of total nematode population | Cowpea | Meloidogyne incognita | [12] |
Bacillus pumilis (bp2) Meyer and Gottheli 1901 | 107–109 CFU/mL | 81.8% reduction of nematode population | Cowpea | Meloidogyne incognita | [12] |
Bacillus thuringiensis Berliner 1915 | 108 CFU/mL/2 | 80.5% reduction of root-knot nematode | Tomato | Meloidogyne incognita | [13] |
Bacillus altitudinis (AMCC1040) Shivaji et al. 2006 | 108 CFU/mL | Numbers of J2s in roots and soil were reduced by 93.68% and 84.48%, respectively. | Ginger (Zingiber officinale Rosc.) | Meloidogyne incognita | [14] |
Pseudomonas protegens Ramette et al. 2011 | 1 × 109 | Mortality rate of 87.76% was observed in J2 24 h after treatment (in-vitro), and Gall index was reduced to 30.67% compared to 49.33% in control, and biocontrol efficacy of 37.84 was observed | Tomato | Meloidogyne incognita | [3] |
Serratia plymuthica (Lehmann and Neumann 1896) Breed et al. 1948 | 1 × 109 | Mortality rate of 92.67% was observed in J2 24 h after treatment (in-vitro), and Gall index lowered to 38.67% compared to 49.33% in control, and biocontrol efficacy of 21.62% was observed | Tomato | M. incognita | [3] |
Species Name | Concentration Used | Reduction in Diseases/Result | Crop | Nematode Managed | References |
---|---|---|---|---|---|
Purpureocillium lilacinus Luangsa-ard, Houbraken, van Doom Hong Borman, Hywel-Jones, and Samson, 2011 | Spore suspension, 10 × 105 concentration | 85% reduction of egg masses of Meloidogyne spp. | Tomato | Meloidogyne spp. | [28] |
Purpureocillium lilacinus | 1 × 109 cfu/mL | 76.24% reduction of root-knot diseases. | Tomato | Meloidogyne incognita | [29] |
Aspergillus terreus Thom 1918, Acremonium strictum W. Gams 1971 | 2% (w/w) spore load, 2.3 × 106 to 2.3 × 108 | 76% and 73% reduction in eggs/egg mass and the number of hatching egg/egg mass by A. Terrus, and 71% and 68% by A. Strictum, respectively. | Tomato | Meloidogyne incognita | [30] |
Acremonium implicatum (J.C. Gilman and E.V. Abbott) W. Gams, 1975 | Spore suspension, 1 × 106 CFU/mL | Reduction in galls with 40.6 galls/treated plant as compared with 121.6 on control plant. | Tomato | Meloidogyne incognita | [31] |
Acremonium implicatum | 1 × 106 CFU/mL conidial suspension | Reduction of 60% root galls | Tomato | Meloidogyne incognita | [32] |
Acremonium strictum, Aspergillus niger van Tieghem 1867, Purpureocillium lilacinus and Trichoderma harzianum Rifai 1969 | Talc-based formulation with spore load 2 × 108 CFU | Combined effect of Trichoderma harzianum and Acremonium strictum resulted in greater reduction of disease and high yield. | Tomato | Meloidogyne incognita | [33] |
Arthrobotrys dactyloides Drechsler 1937 | 2 g (10,000 spore concentration) + 1 g yeast + 3 g vermiculite + 1 mL molasses | Reduction of 94.1% of root galls per plant | Snap bean (Phaseolus vulgaris L.) | Meloidogyne incognita | [34] |
Arthrobotrys oligospora Fresen 1850 | Spore suspension with 105 conidia/mL | Reduced number of galls, females and nematodes and enhanced plant growth. | Tomato | Meloidogyne incognita | [35] |
Arthrobotrys oligospora | Fungal suspension at 10, 30 and 50 mL/plant (1 × 104 spore/mL) | 50 mL/plant resulted in reduction of females, eggs/egg-mass and no. of J2 in soil. | Tomato | Meloidogyne incognita | [36] |
Arthrobotrys oligospora | 106 spores/mL | Application of fungus with salicylic acid reduced root galls and nematode population and increased plant growth. | Tomato | Meloidogyne javanica | [37] |
Aspergillus awamori Nakaz | 108 CFU/mL | Resulted in 44.9% reduction of nematode infection. | Tomato | M. incognita | [38] |
Aspergillus japonicus ZW1 Saito 1906 | 20% fermentation broth | Resulted in 51.8 and 47.3% reduction of eggs and galls, respectively. | Tomato | M. incognita | [39] |
Aspergillus welwitschiae AW2017 (Bres.) Henn. | 2 × 108 conidia/mL (5× AW2017) | Reduction by 40.5% and 24.5% of root galls and juveniles, respectively. | Rice (Oryza sativa L.) | M. graminicola | [40] |
Fusarium and Trichoderma isolates | 5 × 106 conidial suspension per pot | 29–42% of root galling was reduced by application of conidia of rhizosphere Fusarium isolates and 38% reduction of root galls by treatment with Trichoderma. | Rice | M. graminicola | [41] |
Chaetomium globosum Kunze 1817 | 30 mg ChA/kg soil (Chaetoglobosin A-ChA) |
Resulted in reduction of 63% of eggs per plant | Cucumber (Cucumis sativus L.) | M. incognita | [42] |
Chaetomium globosum YSC5 | 200 μg/Ml of chaetoglobosin B and chaetoglobosin A | 59.0–61.5% reduction in number of galls and 71.1–72.4% reduction in number of egg masses | Tomato | M. javanica | [43] |
Dactylaria brochopaga Drechsler 1937 & Verticilium chlamydosporium Goddard 1913 | 2 g (Dactylaria + Verticilium chlamydosporium) + 3 g (vermiculite) + 1 mL (molasses) + 1 g yeast | 93.1% reduction of root galls per plant | Eggplant (Solanum melongena L.) | M. incognita | [44] |
Dactylaria brochopaga | 2 g (fungus) + 1 g (yeast) + 1 mL (molasses) + 3 gm (vermiculite) |
Resulted in 94.1% mean reduction in the number of root galls | Cucumber | M. incognita | [45] |
Pleurotus ostreatus (Jacq.) P. Kumm. 1871 | 5, 10, 15 g fresh mashed mushroom | 15 g mushroom residue resulted in an 86.4% reduction of nematode reproduction and gall reduction by 92.4%. | cowpea | M. incognita | [46] |
Gliocladium spp. | 104 mL−1, 105 mL−1, 10−6 mL−1 conidia suspension | 106 mL−1 conidia suspension significantly decreased intensity of damage by 33%. | Tomato | Meloidogyne spp. | [47] |
Lecanicillium muscarium R. Zare and W. Gams 2001 | 103, 104, 105 and 106 conidia levels with different inoculum densities of M. incognita (500, 1000, 1500, 2000) | Higher density 1 × 106 decreased nematode population, and plant growth parameters improved with increasing fungus inoculum. | Tomato | M. incognita | [48] |
Purpureocillium lilacinus | P. lilacinus WP 1.15% (1 × 108 CFU/g), P. lilacinus liquid 1.50% (1 × 109 CFU/mL) and P. lilacinus AS 1.0% (2 × 106 CFU/g) | P. lilacinus liquid 1.50% resulted in 48.72% reduction in average root gall index; average number of egg masses per root system and average soil nematode population reduced by 60.15% and 61.10%, respectively. | Capsicum (Capsicum annuum L.) | M. incognita | [49] |
Beauveria bassiana (Bals. Criv.) Vuill. 1912 | 1×, 5×, 10×, 20×, 50× dilution of culture filtrate | Resulted in 98.61% and 76.39% rates of inhibition of nematodes at 1× and 5× solutions | Tomato | M. hapla | [50] |
Arthrobotrys dactyloides Drechsler 1937 | 4 × 106 CFU/kg of soil | Resulted in reduction of 37.9–81.8% of juveniles and 44.5–51.3% of egg masses | Tomato | M. incognita | [51] |
Plant Species | Family | Plant Parts Used | Active Compounds | Nematodes Targeted | References |
---|---|---|---|---|---|
Azadirachta indica | Meliaceae | Leaf, Seed, Fruit, Root, Bark | Azadirachtin | Meloidogyne incognita, M. javanica | [61][62] |
Lantana camara | Verbenaceae | Aerial part | Lantanilic acid, camaric acid and oleanolic acid | M. incognita | [63] |
Fumaria parviflora | Papaveraceae | Root | Nonacosane-10-ol and 23a-homostigmast-5-en-3β-ol | M. incognita | [64] |
Tageteserecta L. | Asteraceae | Leaves | Alpha-terthienyl | M. incognita, M. javanica | [65][66][67] |
Moringa oleifera | Moringaceae | Leaves | Flavonoids, glycosides, saponin | M. incognita | [68] |
Terminalia nigrovenulosa | Combretaceae | Bark | 3,4-dihydroxybenzoic acid (3,4-DHBA) | M. incognita | [69] |
Datura spp. | Solanaceae | Leaves, inflorescence, roots |
Atropine, scopolamine, hyoscyamine | Meloidogyne spp. | [70] |
Juglans regia L. | Juglandaceae | Leaves, husk | Beta 1, 4 naphthoquinones | M. hispanica, M. luci | [71][72] |
Waltheria indica L. | Malvaceae | Roots | 5-methoxywaltherione A, waltherione A and waltherione C | M. incognita, M. hapla, M. arenaria | [73] |
Hedysarum coronarium L. | Fabaceae | Leaves, flower | Saponins, flavonoids and tannins | M. incognita | [74] |
Allium sativum L. | Alliaceae | Bulb, leaves | Organosulfur compound, Allicin | Meloidogyne spp. | [75][76] |
Cymbopogon martini (Roxb.) Watsand C. flexuosus (Nees ex Steud) W. Watson | Poaceae | Leaves | Eugenol and citral | M. incognita | [77] |
Brassica spp. | Brassicaceae | Shoot, roots, seed | Isothiocynates | Meloidogyne spp. | [78] |
Pistacia lentiscus L. | Anacardiaceae | Leaves | Quercetin, quinic and gallic acid | M. javanica | [79] |