Allelopathic potential of Zilla spinosa on growth of associate flowering plants and some rhizosphere fungi

El-Khatib, A. A.; Abd-Elaah, Gamalat A.

doi:10.1023/a:1001819014864

Cited by 10 publications

(6 citation statements)

References 15 publications

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“…Germination was less sensitive than seedling growth to allelopathy, as also observed in other species (Smith, 1991; El‐Khatib and Abd‐Elaah, 1998). Shoot extracts caused a slight delay in germination, but final germination rates were not affected by seeds or aqueous extracts of L. rigidum .…”

Section: Discussionsupporting

confidence: 71%

Allelopathic potential of Lolium rigidum Gaud. on the early growth of three associated pasture species

Emeterio

Arroyo

Canals

2004

Grass and Forage Science

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In Mediterranean areas, the establishment of multispecies pastures for extensive livestock use is an alternative to the growing of traditional cereal crops. Lolium rigidum Gaud. is one of the most valuable forage grasses adapted to semiarid environments but its performance in mixtures is not fully understood. Field observations suggest that the species exerts allelopathic effects, although there is no evidence in the literature to support this assumption. The objective of the study was to determine whether L. rigidum affects the germination and seedling growth of common forage species by allelopathic means. Two bioassays were conducted to test for the allelopathic potential of seeds and adult (shoot and root) tissues of L. rigidum on two grasses, Lolium multiflorum Lam. and Dactylis glomerata L., and a legume, Medicago sativa L. The three species showed different degrees of sensitivity to L. rigidum with L. multiflorum being particularly sensitive to allelopathy. Positive and negative effects of L. rigidum on seedling development were noted. Shoot extracts of L. rigidum displayed the most consistent negative effects by inhibiting elongation of the radicle of the three target species. The significance of the results is that in drought-prone environments and where water resources are scarce poor root development decreases the ability of the plants to grow and survive.

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Section: Discussionsupporting

confidence: 71%

Allelopathic potential of Lolium rigidum Gaud. on the early growth of three associated pasture species

Emeterio

Arroyo

Canals

2004

Grass and Forage Science

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“…In this regard, many authors (Einhellig & Rasmussen 1993; Hejl et al . 1993; Inderjit & Dakshini 1995; El‐Khatib & Abd‐Elaah 1998) have reported the inhibitory effects of allelochemicals on the chlorophyll content and net photosynthetic rate of their test species.…”

Section: Resultsmentioning

confidence: 99%

Allelopathy in the rhizosphere and amended soil of Chenopodium murale L.

El-Khatib

Hegazy

Galal

2004

Weed Biology and Management

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Soil infested with Chenopodium murale and amended with it were investigated to verify their allelopathic effects on seedling emergence and some growth and physiological parameters of five test species, Trifolium alexandrinum, Triticum aestivum, Melilotus indicus, lycopersicum esculentum and Cucumus sativus. The two types of soil exhibited phytotoxic effects on the seedling emergence of the test species. Growth and physiological parameters were significantly inhibited when the soil was amended with a high concentration of C. murale tissues. Soil amended with shoot tissue had more inhibitory effects than soil amended with root tissue, at the same concentration. M. indicus was more inhibited than the other species in relation to leaf area, dry matter, pigment, carbohydrates and protein contents.

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“…Petri dishes (control and treated) were numbered and moved to a growth chamber with 23 °C ± 2 and 14/10 h light/dark illumination. When a 2 mm radicle emerged from seed coat and became visible by naked eye, the germinated seeds were counted [ 55 , 56 ]. Counting process was daily recorded at the same time from the day.…”

Section: Methodsmentioning

confidence: 99%

Effect of Salinity Stress on Growth and Metabolomic Profiling of Cucumis sativus and Solanum lycopersicum

Abdel-Farid

Marghany

Rowezek

et al. 2020

Plants

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Seeds germination and seedlings growth of Cucumis sativus and Solanum lycopersicum were monitored in in vitro and in vivo experiments after application of different concentrations of NaCl (25, 50, 100 and 200 mM). Photosynthetic pigments content and the biochemical responses of C. sativus and S. lycopersicum were assessed. Salinity stress slightly delayed the seeds germination rate and significantly reduced the percentage of germination as well as shoot length under the highest salt concentration (200 mM) in cucumber. Furthermore, root length was decreased significantly in all treatments. Whereas, in tomato, a prominent delay in seeds germination rate, the germination percentage and seedlings growth (shoot and root lengths) were significantly influenced under all concentrations of NaCl. Fresh and dry weights were reduced prominently in tomato compared to cucumber. Photosynthetic pigments content was reduced but with pronounced decreasing in tomato compared to cucumber. Secondary metabolites profiling in both plants under stress was varied from tomato to cucumber. The content of saponins, proline and total antioxidant capacity was reduced more prominently in tomato as compared to cucumber. On the other hand, the content of phenolics and flavonoids was increased in both plants with pronounced increase in tomato particularly under the highest level of salinity stress. The metabolomic profiling in stressful plants was significantly influenced by salinity stress and some bioactive secondary metabolites was enhanced in both cucumber and tomato plants. The enhancement of secondary metabolites under salinity stress may explain the tolerance and sensitivity of cucumber and tomato under salinity stress. The metabolomic evaluation combined with multivariate data analysis revealed a similar mechanism of action of plants to mediate stress, with variant level of this response in both plant species. Based on these results, the effect of salinity stress on seeds germination, seedlings growth and metabolomic content of plants was discussed in terms of tolerance and sensitivity of plants to salinity stress.

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Allelopathic potential of Zilla spinosa on growth of associate flowering plants and some rhizosphere fungi

Cited by 10 publications

References 15 publications

Allelopathic potential of Lolium rigidum Gaud. on the early growth of three associated pasture species

Allelopathic potential of Lolium rigidum Gaud. on the early growth of three associated pasture species

Allelopathy in the rhizosphere and amended soil of Chenopodium murale L.

Effect of Salinity Stress on Growth and Metabolomic Profiling of Cucumis sativus and Solanum lycopersicum

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