Phytochemical Study of Safflower Roots (Carthamus tinctorius) on the Induction of Parasitic Plant Germination and Weed Control

Rial, Carlos; Tomé, Sónia; Varela, Rosa M.; Molinillo, José M. G.; Macías, Francisco A.

doi:10.1007/s10886-020-01200-7

Cited by 15 publications

(20 citation statements)

References 37 publications

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“…The exudates were analyzed on an EVOQ Triple Quadrupole Mass Spectrometer from Bruker (Billerica, MA, USA) with an electrospray-ionization source (ESI) in positive mode following the procedures previously described by our research group [40,41] to analyze seven SLs (7-oxoorobanchyl acetate [42], solanacol [43], orobanchol [44], strigol [45,46], fabacyl acetate [47], orobanchyl acetate [48], 5-deoxystrigol [49]) and two STLs (costunolide and dehydrocostuslactone) (Table S1).…”

Section: Lc-ms/ms Analysismentioning

confidence: 99%

Sunflower Metabolites Involved in Resistance Mechanisms against Broomrape

et al. 2021

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Several strategies have been proposed to control parasitic plants and these include biological control, the use of herbicides, and suicidal germination or trap crops. In the case of sunflower, the most effective solution is genetic resistance. Nevertheless, the use of resistant cultivars is followed by the appearance of new and more virulent races of the parasite that overcome the existing sources of resistance. For this reason, it is necessary to increase our knowledge of the mechanisms involved in the resistant varieties. In this study, the presence of compounds involved in pre-attachment resistance mechanisms in sunflower varieties was analyzed. The production of stimulators of the germination of parasitic plant seeds and the concentration of the haustorial elongation inhibitor, scopoletin, were measured in exudates of resistant and susceptible sunflower varieties. It was found that dehydrocostuslactone and orobanchyl acetate are not involved in the resistance of the sunflower varieties studied. The results demonstrate that costunolide, heliolactone, and scopoletin are related to sunflower resistance. The sunflower varieties studied do not use all available options to fight parasitic plants. This could be one of the reasons that sunflower resistance is rapidly overcome by broomrape.

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Section: Lc-ms/ms Analysismentioning

confidence: 99%

Sunflower Metabolites Involved in Resistance Mechanisms against Broomrape

et al. 2021

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“…In addition to weeds, many herbaceous and woody crops have allelopathic traits both on other crops and weeds [16]. Most allelopathic crops belong to the Asteraceae and Poaceae families, but Brassicaceae and Fabaceae are also well-represented ( Tannins, terpenes and alkaloids (absinthium) [18] Carthamus tinctorius L. Sesquiterpene lactones (dehydrocostuslactone, costunolide) and strigolactones (solanacol, GR24 and abacyl acetate) [19] Cichorium intybus L. Sesquiterpene lactones (8α-angeloyloxycichoralexin, lactupicrin) and guaianolides (cichoralexin, 10α-hydroxycichopumilide) [20] Cynara cardunculus L.…”

Section: Crop Allelopathymentioning

confidence: 99%

“…Allelochemicals responsible for C. cardunculus allelopathy are the sesquiterpene lactones cynaropicrin, deacylcynaropicrin, 11,13-dihydrodeacylcynaropicrin, aguerin B, grosheimin, 11,13-dihydroxy-8-deoxygrosheimin and cynaratriol, as well as polyphenols such as caffeoylquinic and dicaffeoylquinic acids, luteolin and apigenin derivatives [21][22][23]. Recently, Rial et al [19] demonstrated the phytotoxicity of safflower (Carthamus tinctorius L.), a thistle-like herbaceous plant cultivated in regions with arid or semiarid climate for industrial applications (oil production, pigments and human consumption), indicating the sesquiterpene lactones dehydrocostuslactone and costunolide and several strigolactones as the main allelochemicals released by root exudation.…”

Section: Botanical Family Binomial Name Allelochemicals Referencesmentioning

confidence: 99%

Crop Allelopathy for Sustainable Weed Management in Agroecosystems: Knowing the Present with a View to the Future

Scavo

Mauromicale

2021

Agronomy

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In the face of yield losses caused by weeds, especially in low-input agricultural systems, and environmental pollution due to the excessive use of synthetic herbicides, sustainable weed management has become mandatory. To address these issues, allelopathy, i.e., the biochemical phenomenon of chemical interactions between plants through the release of secondary metabolites into the environment, is gaining popularity. Although many important crops are known for their allelopathic potential, farmers are still reluctant to use such knowledge practically. It is therefore important to assist advisors and farmers in assessing whether allelopathy can be effectively implemented into an eco-friendly weed management strategy. Here, we aim to give a comprehensive and updated review on the herbicidal potential of allelopathy. The major findings are the following: (1) Crops from different botanical families show allelopathic properties and can be cultivated alone or in combination with other non-allelopathic crops. (2) Many allelopathic tools can be adopted (crop rotation, intercropping, cover cropping as living or dead mulches, green manuring, use of allelochemical-based bioherbicides). (3) These methods are highly flexible and feature increased efficiency when combined into an integrated weed management strategy. (4) Recent advances in the chemistry of allelopathy are facilitating the use of allelochemicals for bioherbicide production. (5) Several biotechnologies, such as stress induction and genetic engineering techniques, can enhance the allelopathic potential of crops or introduce allelopathic traits de novo. This review shows how important the role of allelopathy for sustainable weed management is and, at the same time, indicates the need for field experiments, mainly under an integrated approach. Finally, we recommend the combination of transgenic allelopathy with the aforementioned allelopathic tools to increase the weed-suppressive efficacy of allelopathy.

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“…This fast decrease in Journal of Agricultural and Food Chemistry pubs.acs.org/JAFC Article activity with the dilution has been previously reported for other sesquiterpenes. 16,50 In view of the results, a SAR study could be carried out. First, sesquiterpenes have shown higher activity than flavones.…”

Section: Wheat Coleoptile Bioassay With Isolated Compoundsmentioning

confidence: 99%

“…IC50 Values for the EtOAc Fraction from Piptocarpha rotundifolia (PR) Leaves and the Herbicide Logran on Root and Shoot Growth of Weed Species…”

mentioning

confidence: 99%

Search of New Tools for Weed Control Using Piptocarpha rotundifolia, a Dominant Species in the Cerrado

Anese

Rial

Varela

et al. 2021

J. Agric. Food Chem.

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Piptocarpha rotundifolia (Less.) Baker stands out as one of the species with the highest frequency, density, and relative dominance in the Cerrado formations. However, no phytochemical studies have been carried out with this species to date. The aim of this study was to evaluate the phytotoxic activity of P. rotundifolia leaves in the search of new environmentally friendly tools for weed control. Thus, a wheat coleoptile and phytotoxic bioassay, using relevant agricultural weeds, was used to identify the most active extracts and fractions. The subsequent purification process allowed the isolation of 11 compounds, the phytotoxicity of which was evaluated in terms of wheat coleoptile elongation and with the most sensitive weeds. Piptocarphin A was found to be the major compound and the most active. To confirm its phytotoxic potential, the effect on Ipomea grandifolia grown in a hydroponic culture and on metaxylem cells was studied. The results obtained in this study demonstrate that the inhibitory activity displayed by P. rotundifolia leaf extract is mainly due to the presence of piptocarphin A. The phytotoxicity shown by P. rotundifolia leaf extract, and the isolated compounds, on weeds could provide new tools for weed control in agricultural fields.

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Phytochemical Study of Safflower Roots (Carthamus tinctorius) on the Induction of Parasitic Plant Germination and Weed Control

Cited by 15 publications

References 37 publications

Sunflower Metabolites Involved in Resistance Mechanisms against Broomrape

Sunflower Metabolites Involved in Resistance Mechanisms against Broomrape

Crop Allelopathy for Sustainable Weed Management in Agroecosystems: Knowing the Present with a View to the Future

Search of New Tools for Weed Control Using Piptocarpha rotundifolia, a Dominant Species in the Cerrado

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