Differential allelopathic expression of different plant parts of<i>Achillea biebersteinii</i>

Abu-Romman, Saeid

doi:10.1556/018.67.2016.2.4

Cited by 10 publications

(5 citation statements)

References 34 publications

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“…A study conducted by AbuRomman (2011) showed that water extract of Achillea biebersteinii (Asteraceae) greatly inhibited root growth compared to shoot growth of pepper. The highest root sensitivity to allelochemicals could be attributed to the direct contact of the root system to these toxic phytochemicals and the high permeability of root tissues (Nishida et al, 2005; Abu-Romman and Ammari, 2015; Abd El-Gawwad, 2016) Allelochemical stress was reported to reduce chlorophyll content in different affected species (Gulzar and Siddiqui, 2014;Sarkar and Chakraborty, 2015;Abu-Romman, 2016). However, in the present study total chlorophyll content of barley seedlings was not significantly affected in response to A. annua water extract (Table 2).…”

Section: Resultsmentioning

confidence: 99%

Germination and seedling growth of barley as affected by Artemisia annua water extract

Salman¹,

Salameh²,

Abu-Romman³

2017

Plant Omics

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Laboratory and greenhouse pot experiments were conducted to assess the allelopathic effects of Artemisia annua water extract on germination and growth of barley. Lower concentrations of A. annua water extract (0.5 and 1.0 %) did not affect the germination of barley seeds. However, higher concentrations (1.5-3.5 %) resulted in significant reductions in the germination percentage. Seedling growth of barley was also affected by A. annua water extract. Both shoot and root lengths were negatively affected by A. annua water extract and the degree of inhibition was concentration dependent. When barley seedlings were subjected to 0.5% extract concentration, shoot length was inhibited by 6% while root length showed 18.5% inhibition over control seedlings. The lowest shoot and root lengths were recorded at 3.0 and 3.5 % water extract. At 0.5 % extract concentration, shoot and root fresh and dry weights were significantly unaffected compared with the control. Shoot fresh weight was significantly unaltered when seedlings were treated with 1.0 % extract. However, at the same concentration root fresh weight, shoot dry weight, and root dry weight were inhibited by 44.7, 33.3, and 40 %, respectively. The present results confirmed that root growth (length and weight) was more sensitive to A. annua water extract than shoot growth. The present results also indicated the presence of water soluble allelochemicals in A. annua that are able to inhibit growth of barley.

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Section: Resultsmentioning

confidence: 99%

Germination and seedling growth of barley as affected by Artemisia annua water extract

Salman¹,

Salameh²,

Abu-Romman³

2017

Plant Omics

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“…Similar to herbicides, allelochemicals are continually removed and/or immobilised from the soil solution by leaching, microbial breakdown, adsorption to soil particles and plant uptake (Cheng 1995;Weidenhamer 1996). However, the behaviour of allelochemicals in the soil is more complicated than herbicides, as the former are continuously released from the donor plant with significant differences in relation to plant organs (Abu-Romman 2016;Iqbal et al 2002;Suksungworn et al 2016) and growth stages (Aslam et al 2016). The knowledge of allelochemicals dynamicity in the soil is an important aspect for the better understanding of their interactions with plants, microorganisms and insects and for the possible future application of allelochemical-based bioherbicides, living and dead mulches.…”

Section: Balance Of Allelochemicals In Soilmentioning

confidence: 99%

Plant allelochemicals: agronomic, nutritional and ecological relevance in the soil system

2019

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Background Allelopathy is an ecological phenomenon consisting of both positive and negative effects between organisms determined by the release of secondary metabolites into the environment. Root exudation represents the most important pathway of releasing allelochemicals. Once released into the soil, allelochemicals interact with the organic and inorganic soil phases, as well as with soil microorganisms. The set of these interactions fix allelochemicals bioavailability and phytotoxic level. Scope Here we critically review the interactions between plant allelochemicals and physical, chemical and biological soil characteristics by reporting the literature available and pointing out both positive and negative relationships affecting allelochemicals phytotoxicity and nutrient availability. In addition, we have reported a qualitative balance of allelochemicals in the soil. Thirdly, we reviewed the exudation process of allelochemicals and the transport mechanisms across plasma membranes. Conclusions A two-way relationship exists between soil characteristics and allelochemicals. The level of phytotoxicity is not affected only by a single soil characteristic, but they are closely linked to each other and exert a multiple-effect on retention, transport and transformation processes of allelochemicals in soil. Further efforts are needed to better understand the interactions involved in soil allelopathy and to create new opportunities for a sustainable control of agroecosystems.

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“…The quantitative alteration in chlorophyll and carbohydrates in allelopathic stressed seedlings is dependent on many factors, such as plant species, variety, the sensitivity and tolerance of the recipient species, and the donor species allelochemicals (quantitative and qualitative profile), as well as the age of the seedlings [24,28,64,[68][69][70][71][72].…”

Section: Effect Of H Persicum On Carbohydrates and Proline Contents In Wheatmentioning

confidence: 99%

Allelopathic Potential of Haloxylon persicum against Wheat and Black Mustard with Special Reference to Its Phytochemical Composition and Antioxidant Activity

et al. 2021

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Haloxylon persicum is a well-known plant of sandy deserts, but yet, its allelopathic and phytochemical potential has not been explored. In the present study, we evaluated the effects of different concentrations (1, 2, 4, and 8%) of the aqueous extract of H. persicum shoots on seed germination and seedling growth of wheat crop and black mustard weed. The effects of the same extract on the biochemical parameters (chlorophyll a, chlorophyll b, carbohydrates content, and proline content) of wheat seedlings were also investigated. Low and moderate concentrations (1, 2, and 4%) of H. persicum aqueous extract nonsignificantly affected seed germination, shoot length, root length, fresh weight, and dry weight of wheat seedlings, whereas these parameters were negatively affected by the application of the highest extract concentration (8%). The results revealed a significant increase in proline content in wheat seedlings under all the applied concentrations of H. persicum extract. Low and moderate concentrations (1–4%) of H. persicum extract significantly enhanced chlorophyll a, chlorophyll b, and total chlorophyll content in wheat seedlings, whereas these parameters were significantly reduced when the highest extract concentration (8%) was applied. Only the lowest concentration (1%) of H. persicum extract reduced the carbohydrates content of wheat seedlings, while other concentrations showed nonsignificant effects. Concentrations of 4 and 8% of H. persicum extract reduced the seed germination percentage of black mustard. The root length, shoot length, and fresh weight of black mustard seedlings were significantly decreased by the application of 1 and 2% extract concentrations and completely inhibited in response to treatment with 4 and 8% concentrations. The dry weight of black mustard seedlings was not affected by 1 and 2% extract concentrations but completely inhibited at 4 and 8% concentrations. The methanol extract of H. persicum contains high contents of bioactive secondary metabolites, such as phenolics, flavonoids, flavonols, anthocyanins, tannins, saponins, as well as proved to has a very strong antioxidant activity of the 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (DPPH). Based on our results, we recommend the potential application of the aqueous extracts of H. persicum to control black mustard weed in wheat crops. Furthermore, H. persicum revealed an interesting phytochemical pattern with sound antioxidant activity that assigns this plant as a promising candidate to explore its detailed metabolomics profile along with potential bioactivities.

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Differential allelopathic expression of different plant parts ofAchillea biebersteinii

Cited by 10 publications

References 34 publications

Germination and seedling growth of barley as affected by Artemisia annua water extract

Germination and seedling growth of barley as affected by Artemisia annua water extract

Plant allelochemicals: agronomic, nutritional and ecological relevance in the soil system

Allelopathic Potential of Haloxylon persicum against Wheat and Black Mustard with Special Reference to Its Phytochemical Composition and Antioxidant Activity

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