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Beneficial Lactic Acid Bacteria
Published in K. Balamurugan, U. Prithika, Pocket Guide to Bacterial Infections, 2019
Some experiments concerned the use of LAB in treatment of plant diseases. Plant pathogen Ralstonia solanacearum causes bacterial wilt. Lactobacillus sp. strain KLF01 isolated from rhizosphere of tomato reduced disease severity of tomato and red pepper as compared to nontreated plants (Shrestha et al. 2009a). Lactobacillus KLF01 and Lactococcus KLC02 strains showed 55% and 60% bio-control efficacy, respectively, in regard to Pectobacterium carotovorum subsp. carotovorum, soft rot pathogen, on Chinese cabbage (Shrestha et al. 2009b). These LAB significantly reduced bacterial spot caused by Xanthomonas campestris pv. vesicatoria on pepper plants in comparison with untreated plants in both greenhouse and field experiments. Additionally, LAB are able to colonize roots, produce indole-3-acetic acid, siderophores, and solubilize phosphates (Shrestha et al. 2014). LAB are effective in the removal of the root-knot nematodes. The decreased pH levels in agricultural soil due to lactic acid produced by bacteria are correlated with reduced population of nematodes (Takei et al. 2008). Microalgae are used as feed for live prey (rotifers, Artemia), larvae and adult fish, mollusks, and crustaceans. The growth of microalgae Isochrysis galbana was enhanced by LAB, both in the absence and in the presence of nutrients in the culture. The highest final biomass concentration was achieved by adding Pediococcus acidilactici, whereas Leuconostoc mesenteroides spp. mesenteroides and Carnobacterium piscicola provided for maximal growth rates. However, the latter species also showed inhibitory effect on Moraxella (Planas et al. 2015).
Extracts of the Wild Potato Species Solanum chacoense on Breast Cancer Cells: Biochemical Characterization, In Vitro Selective Cytotoxicity and Molecular Effects
Published in Nutrition and Cancer, 2021
Daniel Cruceriu, Zorita Diaconeasa, Sonia Socaci, Carmen Socaciu, Ovidiu Balacescu, Elena Rakosy-Tican
Solanum chacoense Bitt. is a wild tuber-bearing potato species, native to South America. It is widely used as a genetic resource in potato breeding programs, mainly due to its resistance to the Colorado potato beetle and bacterial wilt (17). S. chacoense resistance to these pathogens is based on the phytochemical constituents found in different plant organs, particularly glycoalkaloids (18). Without being a coincidence, several of these important secondary metabolites belonging to the class of alkaloids, including solamargine (19, 20), α-chaconine and α-solanine (21), were previously reported to have anticancer properties. Consistent with these studies, S. chacoense extracts have been found to possess anticancer activities, when tested in vitro (22). Considering all these data, S. chacoense extracts may be valuable sources of bioactive constituents with anticancer properties. Furthermore, due to its intensive usage in potato breeding programs, new potato cultivars, containing high levels of these anticancer nutrients may be obtained. However, several questions regarding the anticancer potential of S. chacoense extracts and constituents still need to be answered.