Impact of seaweeds on fluorescent Pseudomonas and their role in suppressing the root diseases of soybean and pepper

Marine Macroalgae, a Source of Natural Inhibitors of Fungal Phytopathogens

“…As reported above for Fusarium, the brown algae extracts seem to be more effective than the remaining algae groups, which may be due to the presence of polyphenols [52] and/or 1-aminocyclopropane-1-carboxylic acid [71,113], which may also be the reason for their activity against M. phaseolina. The effectiveness of the dry powder obtained from Melanothamnus afaqhusainii [72,74] and S. robusta [71] demonstrated the potential of red algae in planta assays. The potential of the Rhodophyta group was also confirmed in vitro, namely, with Centroceras sp., Ceramium sp., Gelidium pulchrumi, Gracilaria corticate, Halymenia porphyriformis, Hypnea musciformis, Jania pedunculata var.…”

“…Diverse macroalgae species belonging to red, green, and brown macroalgae have been investigated for their antifungal potential against Fusarium species, and their potential has been observed in in vitro assays, as well as in field and in greenhouse conditions [71]. Rizvi and Shameel reported a higher susceptibility to methanolic extracts produced by Chlorophyta, Phaeophyta, and Rhodophyta in F. solani, while F. moniliforme was only inhibited by methanolic extracts from brown and red alga, Dictyota hauckiana and Botryocladia leptopoda, respectively, showing a different interaction between extracts and fungal species [96].…”

“…However, a higher activity from the aqueous and methanolic extracts obtained from Sargassum tenerrinum was registered. Despite the common existence of some differences between algae species from the same genus [52], Sargassum ilicifolium [109], S. swartzii [71], and S. binderi [74] have also demonstrated potential to inhibit M. phaseolina growth. Among brown algae, relevant inhibitory activity was also revealed by Cystoseira indica [109], Dictyota indica, Padina tetrastomatica, S. polypodioides (previously identified as S. marginatum) [71], Stokeyia indica, and Spatoglossum variabile [72,74].…”

“…Despite the common existence of some differences between algae species from the same genus [52], Sargassum ilicifolium [109], S. swartzii [71], and S. binderi [74] have also demonstrated potential to inhibit M. phaseolina growth. Among brown algae, relevant inhibitory activity was also revealed by Cystoseira indica [109], Dictyota indica, Padina tetrastomatica, S. polypodioides (previously identified as S. marginatum) [71], Stokeyia indica, and Spatoglossum variabile [72,74]. As reported above for Fusarium, the brown algae extracts seem to be more effective than the remaining algae groups, which may be due to the presence of polyphenols [52] and/or 1-aminocyclopropane-1-carboxylic acid [71,113], which may also be the reason for their activity against M. phaseolina.…”

“…Among brown algae, relevant inhibitory activity was also revealed by Cystoseira indica [109], Dictyota indica, Padina tetrastomatica, S. polypodioides (previously identified as S. marginatum) [71], Stokeyia indica, and Spatoglossum variabile [72,74]. As reported above for Fusarium, the brown algae extracts seem to be more effective than the remaining algae groups, which may be due to the presence of polyphenols [52] and/or 1-aminocyclopropane-1-carboxylic acid [71,113], which may also be the reason for their activity against M. phaseolina. The effectiveness of the dry powder obtained from Melanothamnus afaqhusainii [72,74] and S. robusta [71] demonstrated the potential of red algae in planta assays.…”