Ecological insights and environmental threats of invasive alien plant<i>Chromolaena odorata</i>: Prospects for sustainable management

Rai, Prabhat Kumar; Singh, Jamuna S.

doi:10.1111/wbm.12286

Cited by 3 publications

(2 citation statements)

References 139 publications

(282 reference statements)

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“…(Asteraceae) is native to America, a very widely distributed tropical shrub in Asia, Oceania, and Africa, and considered one of the world's worst weeds [34]. Once established, it can form monoculture stands, and successfully invade diverse habitats with a wide range of environmental gradients, such as cultivated lands, abandoned fields, forest gaps, wastelands, forest trails, fence rows, roadsides, and forest margins [35,36]. It flowers seasonally, predominantly during the dry season.…”

Section: Introductionmentioning

confidence: 99%

Variation in Seed Morphological Traits Affects the Dispersal Strategies of Chromolaena odorata Following Invasion

Li,

Wang,

Geng

et al. 2024

Plants

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Seed germination and dispersal have an important impact on the establishment and spread of invasive plants. Understanding the extent of intraspecific seed trait variations can enhance our understanding of how invasive plants respond to environmental change after introduction and help predict the dynamic of invasive species under future environmental conditions. However, less attention has been given to the variation in seed traits within species as opposed to among species. We compared seed production, seed morphological traits, dispersal ability, and seedling performance of Chromolaena odorata from 10 introduced populations in Asia and 12 native populations in America in a common garden. The results showed that range (introduced vs. native) and climate affected these traits. Compared with the native population, the introduced populations had higher seed numbers per capitula, lighter seeds, and higher potential dispersal ability seeds (lower terminal velocity) but lower germination rates and seedling lengths. Climatic clines in seed numbers per capitula and pappus length were observed; however, the clines in pappus length differed between the introduced and native populations. Trait covariation patterns were also different between both ranges. In the native populations, there was a trade-off between seed numbers per capitula and seed mass, while this relationship was not found for the introduced populations. These results indicate that C. odorata alters the ecological strategy of seed following invasion, which facilitates its establishment and fast dispersal and contributes to successful invasion in the introduced ranges.

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Section: Introductionmentioning

confidence: 99%

Variation in Seed Morphological Traits Affects the Dispersal Strategies of Chromolaena odorata Following Invasion

Li,

Wang,

Geng

et al. 2024

Plants

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“…Some TIPS have a very aggressive root system capable of spreading a long distance and smothering the root systems of neighboring plants (Lawson et al, 2021;Rai et al, 2023). Some TIPS produce toxic chemicals that inhibit the growth and seed germination of other plants (Albouchi et al, 2013;Callaway & Aschehoug, 2000;Heisey, 1990;Oyeniyi et al, 2016;Rahman et al, 2017;Rai, 2015;Rai et al, 2023;Rai & Singh, 2024). Therefore, TIPS can rapidly replace a diverse ecosystem with a monoculture (Rai, 2015).…”

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confidence: 99%

DNA barcoding of terrestrial invasive plant species in Southwest Michigan

Nath,

VanSlambrouck,

Yao

et al. 2024

Plant Direct

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Because of the detrimental effects of terrestrial invasive plant species (TIPS) on native species, ecosystems, public health, and the economy, many countries have been actively looking for strategies to prevent the introduction and minimize the spread of TIPS. Fast and accurate detection of TIPS is essential to achieving these goals. Conventionally, invasive species monitoring has relied on morphological attributes. Recently, DNA‐based species identification (i.e., DNA barcoding) has become more attractive. To investigate whether DNA barcoding can aid in the detection and management of TIPS, we visited multiple nature areas in Southwest Michigan and collected a small piece of leaf tissue from 91 representative terrestrial plant species, most of which are invasive. We extracted DNA from the leaf samples, amplified four genomic loci (ITS, rbcL, matK, and trnH‐psbA) with PCR, and then purified and sequenced the PCR products. After careful examination of the sequencing data, we were able to identify reliable DNA barcode regions for most species and had an average PCR‐and‐sequencing success rate of 87.9%. We found that the species discrimination rate of a DNA barcode region is inversely related to the ease of PCR amplification and sequencing. Compared with rbcL and matK, ITS and trnH‐psbA have better species discrimination rates (80.6% and 63.2%, respectively). When ITS and trnH‐psbA are simultaneously used, the species discrimination rate increases to 97.1%. The high species/genus/family discrimination rates of DNA barcoding indicate that DNA barcoding can be successfully employed in TIPS identification. Further increases in the number of DNA barcode regions show little or no additional increases in the species discrimination rate, suggesting that dual‐barcode approaches (e.g., ITS + trnH‐psbA) might be the efficient and cost‐effective method in DNA‐based TIPS identification. Close inspection of nucleotide sequences at the four DNA barcode regions among related species demonstrates that DNA barcoding is especially useful in identifying TIPS that are morphologically similar to other species.

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Understanding the Influence of Secondary Metabolites in Plant Invasion Strategies: A Comprehensive Review

Akbar,

Sun,

et al. 2024

Plants

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The invasion of non-native plant species presents a significant ecological challenge worldwide, impacting native ecosystems and biodiversity. These invasive plant species significantly affect the native ecosystem. The threat of invasive plant species having harmful effects on the natural ecosystem is a serious concern. Invasive plant species produce secondary metabolites, which not only help in growth and development but are also essential for the spread of these plant species. This review highlights the important functions of secondary metabolites in plant invasion, particularly their effect on allelopathy, defense system, interaction with micro soil biota, and competitive advantages. Secondary metabolites produced by invasive plant species play an important role by affecting allelopathic interactions and herbivory. They sometimes change the soil chemistry to make a viable condition for their proliferation. The secondary metabolites of invasive plant species inhibit the growth of native plant species by changing the resources available to them. Therefore, it is necessary to understand this complicated interaction between secondary metabolites and plant invasion. This review mainly summarizes all the known secondary metabolites of non-native plant species, emphasizing their significance for integrated weed management and research.

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Ecological insights and environmental threats of invasive alien plantChromolaena odorata: Prospects for sustainable management

Cited by 3 publications

References 139 publications

Variation in Seed Morphological Traits Affects the Dispersal Strategies of Chromolaena odorata Following Invasion

Variation in Seed Morphological Traits Affects the Dispersal Strategies of Chromolaena odorata Following Invasion

DNA barcoding of terrestrial invasive plant species in Southwest Michigan

Understanding the Influence of Secondary Metabolites in Plant Invasion Strategies: A Comprehensive Review

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