TABLE 1.
Biological control of plant pathogens and insects using algal species.
| Group | Algae species/consortia | Pathogen/insect type | Pathogen/insect name | Host plant | Treatment method | Product applied | References |
| Prokaryotic cyanobacteria | Anabaena variabilis RPAN59, Anabaena laxa RPAN8 | Fungal pathogen | Pythium debaryanum, Fusarium oxysporum f. sp. lycopersici, Fusarium moniliforme, and Rhizoctonia solani | Tomato | Soil application | Cell culture and filtered supernatant | Chaudhary et al., 2012; Prasanna et al., 2013 |
| Anabaena torulosa, A. laxa, Calothrix sp. | Fungal pathogen | R. solani | Cotton | Soil application | Cell culture | Prasanna et al., 2016 | |
| Nostoc commune FA-103 | Fungal pathogen | F. oxysporum f. sp. lycopersici | Tomato | Seed coating | Cell extract | Kim and Kim, 2008 | |
| Calothrix elenkenii | Fungal pathogen | Pythium aphanidermatum | Tomato, chili, and brinjal | Seed soaking | Filtered supernatant | Manjunath et al., 2010 | |
| Nostoc strain ATCC 53789 | Fungal pathogen | Sclerotinia sclerotiorum | Tomato | Seed soaking | Cell biomass and methanolic extract | Biondi et al., 2004 | |
| Microcoleus vaginatus | Pathogenic nematode | Meloidogyne arenaria | Tomato | Root dipping | Filtered supernatant | Khan et al., 2005 | |
| Oscillatoria chlorina | Pathogenic nematode | M. arenaria | Tomato | Soil application | Dried cell suspension | Khan et al., 2007 | |
| Aphanocapsa albida, Anabaena oryzae, Nostoc muscorum, and Calothrix marchica | Pathogenic nematode | Meloidogyne incognita | Tomato | Soil application | Aqueous extract | Hamouda and El-Ansary, 2013 | |
| Scytonema MKU 106 | Chewing insect | Helicoverpa armigera, Heliothis larvae, and Sylepta derogata | Cotton | Foliar application | Peptide extract | Sathiyamoorthy and Shanmugasundaram, 1996 | |
| Eukaryotic green algae | Chlorella vulgaris | Pathogenic nematode | M. arenaria and Xiphinema indexin | Tomato, grape | Soil application | Dried cell extract | Choleva et al., 2005; Bileva, 2013 |
| Chlorella fusca | Fungal pathogen | Colletotrichum orbiculare | Cucumber | Foliar application | Cell culture | Lee et al., 2016, 2017; Kim et al., 2018a | |
| C. fusca | Fungal pathogen | Botrytis squamosa | Chinese chives | Foliar or soil application | Cell culture | Kim et al., 2018b | |
| C. fusca | Bacterial pathogen | Pseudomonas syringae pv. tomato | Arabidopsis | Foliar application | Cell culture/cell-free supernatant | Lee et al., 2020a | |
| Cyanobacteria–bacteria consortia | Anabaena oscillarioides and Bacillus subtilis | Fungal pathogen | F. oxysporum, P. debaryanum, P. aphanidermatum, and R. solani | Tomato | Soil application | Cell culture | Dukare et al., 2011 |