Can seasonal dynamics of allelochemicals play a role in plant invasions? A case study with Helianthus tuberosus L.

Filep, Rita; Pál, Róbert W.; Balázs, Viktória Lilla; Mayer, Mátyás; Nagy, Dávid U.; Cook, Bradley J.; Farkas, Ágnes

doi:10.1007/s11258-016-0662-1

Cited by 13 publications

(9 citation statements)

References 59 publications

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“…Helianthus tuberosus plants exhibit a rapid increase in plant height, number of leaves and tubers through one life cycle that enable H. tuberosus to outcompete most other plant species in arable land [ 4 ]. Meanwhile, the plant is also considered a serious weed in some areas because it competes vigorously with other plants in Europe and Canada [ 4 , 15 ]. After H. tuberosus and A. adenophora were grown together over the course of a field season, the root biomass, main stem length, leafstalk length, and leaf area of H. tuberosus were markedly higher than those of A. adenophora , indicating H. tuberosus gains the competitive advantage via its strong underground roots and large aboveground individuals.…”

Section: Discussionmentioning

confidence: 99%

“…This crop has been demonstrated to suppress growth and photosynthetic ability of several invasive plants such as Ambrosia trifida , Cenchrus pauciflorus , and Flaveria bidentis [ 11 – 13 ]. Furthermore, allelochemicals produced by H. tuberosus may interfere with the growth of other species, resulting in improved growth, development, and spread by H. tuberosus [ 14 , 15 ]. Therefore, this crop exhibits great potential to provide ecological management of other invasive alien plants.…”

Section: Introductionmentioning

confidence: 99%

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Potential use of Helianthus tuberosus to suppress the invasive alien plant Ageratina adenophora under different shade levels

Shen

et al. 2021

BMC Ecol Evo

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Background An ecological approach for managing biological invasions in agroecosystems is the selection of alternative crop species to manage the infestation of invasive alien plants through competition. In the current study, plant growth, photosynthesis, and competitive ability of the crop Helianthus tuberosus L. (Jerusalem artichoke) and the invasive alien plant Ageratina adenophora (Spreng.) R. M. King and H. Rob were compared under varying shade levels by utilizing a de Wit replacement series method. We hypothesized that H. tuberosus had higher competitive ability than A. adenophora even under shaded conditions. Results The results showed the main stem, leafstalk length, leaf area, underground biomass, and aboveground biomass of A. adenophora were significantly lower compared to H. tuberosus in monoculture although A. adenophora had a greater number of branches that were longer on average. Under full sunlight, the total shoot length (stem + branch length), main stem length and branch length of A. adenophora were significantly suppressed (P < 0.05) by increasing proportions of H. tuberosus, and the same morphological variables of H. tuberosus were significantly higher with decreasing proportions of H. tuberosus. With increasing shade rates and plant ratios, the plant height, branch, leaf, and biomass of both plants were significantly suppressed, but to a greater degree in the case of A. adenophora. The net photosynthetic rate (Pn) of H. tuberosus and A. adenophora increased gradually from July to September, then decreased in October. The Pn of H. tuberosus was consistently higher than that of A. adenophora. Although the Pn for both species was significantly reduced with increasing shade rates and plant ratios, A. adenophora experienced greater inhibition than H. tuberosus. The relative yield (RY) of A. adenophora was significantly less than 1.0 (P < 0.05) in mixed culture under all shade levels, indicating that the intraspecific competition was less than interspecific competition. The RY of H. tuberosus was significantly less than 1.0 under 40–60% shade and greater than 1.0 (P < 0.05) under 0–20% shade in mixed culture, respectively, showing that intraspecific competition was higher than interspecific competition under low shade, but the converse was true under high shade. The relative yield total (RYT) of A. adenophora and H. tuberosus was less than 1.0 in mixed culture, indicating that there was competition between the two plants. The fact that the competitive balance (CB) index of H. tuberosus was greater than zero demonstrated a higher competitive ability than A. adenophora even at the highest shade level (60%). Conclusions Our results suggest that H. tuberosus is a promising replacement control candidate for managing infestations of A. adenophora, and could be widely used in various habitats where A. adenophora invades.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potential use of Helianthus tuberosus to suppress the invasive alien plant Ageratina adenophora under different shade levels

Shen

et al. 2021

BMC Ecol Evo

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“…Equation 1, generated by the model, predicted that the extracts from spring and autumn increases the odds of an increase in the SL by 6-and 9-fold, respectively, when compared to extracts from the summer. Filep et al (2016) observed that the allelopathic effects of Helianthus tuberosus L. were the strongest in the early summer and late autumn when allelochemicals accumulate in the rhizosphere. In another study, it was noted that root extracts of Ludwigia hexapetala obtained during autumn positively affected the SL of Egeria densa (Thiébaut et al 2018).…”

Section: Root Extract Effects On the Growth Of I Grandifoliamentioning

confidence: 99%

Phytotoxic bioassays and Fingerprinting by HPLC-DAD of Eragrostis plana Nees Root Extracts – application of chemometrics

Hendges

Teixeira

Lima

et al. 2021

An. Acad. Bras. Ciênc.

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Eragrostis plana (Nees) (Tough Lovegrass) shows ability to interfere with other plants, a phenomenon known as allelopathy. This chemical interaction between plants occurs due to the release of compounds into the environment. Thus, a phytotoxicity study was carried out with E. plana roots collected during each season throughout the year, and the compounds were extracted with solvents of increasing polarity. The data from the bioassays were analyzed by GLM and PCA. In addition, a fi ngerprint of these extracts was obtained by HPLC-DAD. The extracts in petroleum ether from roots collected in the winter and summer showed greater phytotoxicity on Ipomoea grandifolia germination and growth. The PCA obtained from the chromatogram of the crude extract showed that the extracts in petroleum ether were chemically different from the extracts in ethyl acetate and methanol. Thus, continuing this study in order to develop a new generation of bio-herbicides is essential.

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“…Therefore, it is important to differentiate alien species into casual, naturalized, and invasive [2], because currently, only the invasive species pose an environmental problem. While casual and naturalized alien species can also be potentially dangerous, invasive species already represent a serious environmental danger to the conservation of biological diversity and ecosystem functions [3,14,[16][17][18]. This is why we focused our study on the invasive group of alien species.…”

Section: Introductionmentioning

confidence: 99%

Effects of invasive plant species on species diversity: implications on ruderal vegetation in Bratislava City, Slovakia, Central Europe

et al. 2019

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Invasive species pose one of the most serious global environmental threats. Our study aimed to examine the correlation between the proportion of invasive alien taxa and species diversity of ruderal vegetation in the urban ecosystem of Bratislava, located in Central Europe. Ruderal habitats serve as the means of spread of invasive species to seminatural and natural habitats. Twenty-six invasive taxa were recorded among the ruderal vegetation of Bratislava. The majority of the recorded invasive species were neophytes, which came from North America and represent the Asteraceae family. Half of them were introduced accidentally, whereas the remaining species were introduced deliberately. Correlation and regression analyses showed that the proportion of invasive taxa has a negative effect on the species diversity of all the analyzed syntaxa in the ruderal vegetation of Bratislava.

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Can seasonal dynamics of allelochemicals play a role in plant invasions? A case study with Helianthus tuberosus L.

Cited by 13 publications

References 59 publications

Potential use of Helianthus tuberosus to suppress the invasive alien plant Ageratina adenophora under different shade levels

Potential use of Helianthus tuberosus to suppress the invasive alien plant Ageratina adenophora under different shade levels

Phytotoxic bioassays and Fingerprinting by HPLC-DAD of Eragrostis plana Nees Root Extracts – application of chemometrics

Effects of invasive plant species on species diversity: implications on ruderal vegetation in Bratislava City, Slovakia, Central Europe

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