Evaluating Ecklonia maxima water-soluble polysaccharides as a growth promoter of tomato seedlings and resistance inducer to Fusarium wilt

Righini, Hillary; Cetrullo, Silvia; Bissoli, Irene; Zuffi, Veronica; Quintana, Antera Martel; Flamigni, Flavio; Francioso, Ornella; Roberti, Roberta

doi:10.1016/j.scienta.2023.112071

Cited by 6 publications

(4 citation statements)

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“…Fusarium wilt of tomato is one of the most important diseases caused by FOL. If plants are severely infected with Fusarium, it can cause permanent wilting and death [3]. Currently, many chemical fungicides are being used to control the disease.…”

Section: Discussionmentioning

confidence: 99%

“…Aqueous extracts from neem and willow can induce the antioxidant defensive enzymes in tomato seedlings [48]. Recently, Righini et al [3] reported that water-soluble polysaccharides from Ecklonia maxima are a growth promoter of tomato seedlings and an inducer of resistance to Fusarium wilt. Therefore, the mechanism of quinoa saponins' resistance to tomato wilt disease in vivo may be different from that proposed by Stuardo and Martín [37], which deserves further study.…”

Section: Discussionmentioning

confidence: 99%

“…Tomato (Solanum lycopersicum L., Solanaceae) is one of the most profitable and popular fruit or vegetable crop grown worldwide, and it is ranked the second after the potato (Solanum tuberosum L.) among vegetable plants [1,2]. Currently, the global production of fresh tomato fruit has reached 187 million tons, and the cultivated area is approximately 5 million hectares [3]. China is the world's largest producer, with a cultivated area of almost 1.11 million hectares [4].…”

Section: Introductionmentioning

confidence: 99%

“…One of the biotic stresses caused by FOL is responsible for intense yield losses of tomato. According to reports in the literature, FOL causes yield losses in a range between 20% and 80% [3,14,15]. As far as the cherry tomato was concerned, about 65% yield loss and 50-60% plant mortality were observed after infection by FOL [16].…”

Section: Introductionmentioning

confidence: 99%

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Crude Saponins from Chenopodium quinoa Willd. Reduce Fusarium Wilt Infection in Tomato Seedlings

Zhou,

Guo,

Zhang

et al. 2023

Horticulturae

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Quinoa saponins are pentacyclic triterpene compounds composed of one triterpenoid glycoside and two different sugar chains. Previous studies have showed that natural quinoa saponins showed little or no antifungal activity, and there are few reports about their antifungal effects in recent decades. Fusarium wilt caused by Fusarium oxysporum f. sp. lycopersici (FOL) is the most serious for tomatoes in the field and under greenhouse conditions. The main objective of this study was to investigate the effectiveness of different concentrations and application modes of crude saponins from quinoa bran against the causal pathogen of tomato wilt under a greenhouse experiment. The results showed that the anti-FOL activity of quinoa saponins was weak in vitro, but significantly enhanced in vivo. Tomato seeds and seedlings treated with solution of quinoa saponins at 0.5 and 1.0 g/L significantly reduced the disease incidence (%) of tomato Fusarium wilt. The treatment types of saponin solution have influence on the preventive effects (%) of tomato seedlings against Fusarium wilt, among them, root soaking > foliar spray > seed soaking. The treatment of seed soaking with quinoa saponins inhibited germination of tomato seeds to some extent. However, the germination rate of tomato seeds after saponin soaking was comparable to the chemical pesticide (thiram carboxin); therefore, it could be used to control tomato wilt disease. This is due to the fact that the antifungal activity of quinoa saponins in vivo was much higher than that in vitro when the saponin concentration was between 0.5–1.0 g/L, indicating that the antifungal activity of quinoa saponins may be achieved mainly by inducing resistance. This investigation supports the potential use of quinoa saponins as a supplier of antifungal compounds, and could be the foundation for a future study examining the use of quinoa bran as a new resource against FOL.

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Section: Discussionmentioning

confidence: 99%