Saffron corm as a natural source of fungicides: The role of saponins in the underground

Rubio-Moraga, Ángela; Gómez-Gómez, Lourdes; Trapero, Almudena; Castro-Díaz, Natali; Ahrazem, Oussama

doi:10.1016/j.indcrop.2013.06.029

Cited by 20 publications

(9 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increased growth of tomato plants suggests that tepal extract may act as a promoter of plant growth with a 3 g/L concentration, which contains 1.308 mg CGE/L of anthocyanin and 20.181 mg GAE/L of polyphenol. Corms also are a rich source of phenolic, flavonoid, and especially saponin (RubioMoraga et al, 2013), likely to participate in increased growth characteristics of the treated plants in the results of current research. Saffron stigmas contain nitroge nous substances, anthocyanins, glycosides, monoter penes, aldehydes, flavonoids, vitamins, volatile oils, proteins, carbohydrates (Amin and Hosseinzadeh, 2015).…”

Section: Photosynthetic Pigmentsmentioning

confidence: 72%

Impact of Moroccan Crocus sativus L. tepals, corms, and stigmas extract on growth and photosynthetic pigments in tomato seedling

Khoulati¹,

Saalaoui²

2021

Adv. Hort. Sci.

View full text Add to dashboard Cite

An experiment was carried out in a greenhouse to study the effect of aqueous extracts of Crocus sativus L. by-products on tomato plants. Three concentrations of tepals and corms were used by fertigation: 1 g/L, 2 g/L, and 3 g/L. The aqueous extract of the stigmas was used as a foliar application at 0.6 g/L. The experiment was carried out in a completely randomized block with three repetitions for each concentration. The concentration of tepal extract at 3 g/L significantly (p≤0.05) increased the plants' height, the chlorophyll a, b content. The same results were observed for the foliar treatment with stigmas; however, there was no effect of tepal extract on the carotenoid content. On the other hand, the concentration 2 g/L of the corms extract had a positive impact (p≤0.05) in the chlorophyll b content while the concentration of 3 g/L increased the plant's height, the chlorophyll a (p≤0.05). Current results indicate that Crocus sativus by-products could improve certain physiological aspects of the recipient plants and new and natural biostimulants.

show abstract

Section: Photosynthetic Pigmentsmentioning

confidence: 72%

Impact of Moroccan Crocus sativus L. tepals, corms, and stigmas extract on growth and photosynthetic pigments in tomato seedling

Khoulati¹,

Saalaoui²

2021

Adv. Hort. Sci.

View full text Add to dashboard Cite

show abstract

“…Even if a specific characterization of plant pathogens was not conducted, the high wilting rate found in MG could be related and favored by the presence, in this site, of several fungal species belonging to Ascomycetes such as Blumeria , Colletotrichum , Curvularia , Gibberella , Leptosphaeria , Plectosphaerella , Ramularia , Stigmina . Indeed, all these have been reported to be associated with saffron diseases [ 57 , 58 ]. We also detected some taxa, previously reported as endophytic fungal isolates, belonging to two Ascomycota lineages representing two orders (Helotiales and Pleosporales) and one order each in Basidiomycota and Mortierellomycota, namely Agaricales and Mortierellales, respectively.…”

Section: Discussionmentioning

confidence: 99%

Metabarcoding of Soil Fungal Communities Associated with Alpine Field-Grown Saffron (Crocus sativus L.) Inoculated with AM Fungi

Victorino

Voyron

Caser

et al. 2021

JoF

View full text Add to dashboard Cite

Soil fungi strongly influence ecosystem structure and functioning, playing a key role in many ecological services as decomposers, plant mutualists and pathogens. Arbuscular mycorrhizal fungi (AMF) establish mutualistic symbiotic associations with plant roots and act as biofertilizers by enhancing plant nutrients and water uptake. Information about the AMF association with Crocus sativus L. (saffron) and their impact on crop performances and spice quality has been increasing in recent years. Instead, there is still little data on the biodiversity of soil microbial communities associated with this crop in the Alpine environments. The aims of this study were to investigate the fungal communities of two Alpine experimental sites cultivated with saffron, and to rank the relative impact of two AMF inocula, applied to soil as single species (R = Rhizophagus intraradices, C. Walker & A. Schüßler) or a mixture of two species (M = R. intraradices and Funneliformis mosseae, C. Walker & A. Schüßler), on the resident fungal communities which might be influenced in their diversity and composition. We used Illumina MiSeq metabarcoding on nuclear ribosomal ITS2 region to characterize the fungal communities associated to Crocus sativus cultivation in two fields, located in the municipalities of Saint Christophe (SC) and Morgex (MG), (Aosta Valley, Italy), treated or not with AMF inocula and sampled for two consecutive years (Y1; Y2). Data analyses consistently indicated that Basidiomycota were particularly abundant in both sites and sampling years (Y1 and Y2). Significant differences in the distribution of fungal taxa assemblages at phylum and class levels between the two sites were also found. The main compositional differences consisted in significant abundance changes of OTUs belonging to Dothideomycetes and Leotiomycetes (Ascomycota), Agaricomycetes and Tremellomycetes (Basidiomycota), Mortierellomycetes and Mucoromycetes. Further differences concerned OTUs, of other classes, significantly represented only in the first or second year of sampling. Concerning Glomeromycota, the most represented genus was Claroideoglomus always detected in both sites and years. Other AMF genera such as Funneliformis, Septoglomus and Microdominikia, were retrieved only in MG site. Results highlighted that neither sites nor inoculation significantly impacted Alpine saffron-field fungal communities; instead, the year of sampling had the most appreciable influence on the resident communities.

show abstract

“…Azafrines 1 and 2 are localized in the external part of the corms, suggesting their involvement in plant defense. 119,120 Saponin Properties. Saponins or saponin-containing plant extracts are exploited by the pharmaceutical industry.…”

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 99%

“…Both prosapogenins are substituted at the C28 position with a pentasaccharide consisting of β- d -galactopyranosyl-(1→2)-α- l -arabinopyranosyl-(1→2)-[β- d -xylopyranosyl-(1→4)]-α- l -rhamnopyranosyl-(1→2)-β- d -fucopyranose, and a 4- O -di-α- l -rhamnopyranosyl-3,16-dihydroxy-10-oxo-hexadecanoyl group is linked to C-4 of the β- d -fucopyranosyl residue. Azafrines 1 and 2 are localized in the external part of the corms, suggesting their involvement in plant defense. , …”

Section: Saponins In Saffron Cormsmentioning

confidence: 99%

See 1 more Smart Citation

Saffron: Its Phytochemistry, Developmental Processes, and Biotechnological Prospects

Ahrazem

Rubio-Moraga

Nebauer

et al. 2015

J. Agric. Food Chem.

Self Cite

View full text Add to dashboard Cite

The present state of knowledge concerning developmental processes and the secondary metabolism of saffron, Crocus sativus L. (Iridaceae), along with the genes involved in these processes so far known, is reviewed. Flowers and corms constitute the most valuable parts of saffron. Corm and flower development are two key aspects to be studied in saffron to increase the yield and quality of the spice, to raise its reproductive rate, and to implement new production systems. Important knowledge about the physiology of flowering and vegetative growth has been acquired in recent years, but there is still only limited information on molecular mechanisms controlling these processes. Although some genes involved in flower formation and meristem transition in other species have been isolated in saffron, the role of these genes in this species awaits further progress. Also, genes related with the synthesis pathway of abscisic acid and strigolactones, growth regulators related with bud endodormancy and apical dominance (paradormancy), have been isolated. However, the in-depth understanding of these processes as well as of corm development is far from being achieved. By contrast, saffron phytochemicals have been widely studied. The different flower tissues and the corm have been proved to be an important source of phytochemicals with pharmacological properties. The biotechnological prospects for saffron are here reviewed on the basis of the discovery of the enzymes involved in key aspects of saffron secondary metabolism, and we also analyze the possibility of transferring current knowledge about flowering and vegetative propagation in model species to the Crocus genus.

show abstract

Saffron corm as a natural source of fungicides: The role of saponins in the underground

Cited by 20 publications

References 32 publications

Impact of Moroccan Crocus sativus L. tepals, corms, and stigmas extract on growth and photosynthetic pigments in tomato seedling

Impact of Moroccan Crocus sativus L. tepals, corms, and stigmas extract on growth and photosynthetic pigments in tomato seedling

Metabarcoding of Soil Fungal Communities Associated with Alpine Field-Grown Saffron (Crocus sativus L.) Inoculated with AM Fungi

Saffron: Its Phytochemistry, Developmental Processes, and Biotechnological Prospects

Contact Info

Product

Resources

About