Effect of temperature and salinity on germination of<i>Ruta graveolens</i>L.

Mguis, Khaled; Albouchi, Ali; Brahim, Nadia Ben

doi:10.1080/12538078.2011.10516301

Cited by 7 publications

(7 citation statements)

References 43 publications

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“…Germination was inhibited beyond 16 g L -1 NaCl (273.7 mM), the concentration seems to be the tolerance threshold for this species' salinity. Such results have been obtained on R. graveolens (Yamashita et al, 2009;Mguis et al, 2011). The negative response to saline stress at the germination stage has also been reported in certain studies on glycophytes belonging to other botanical families (Laghmouchi et al, 2017;Mehdadi et al, 2017;Dadach & Mehdadi, 2018;Mira et al, 2018).…”

Section: Discussionsupporting

confidence: 59%

“…(Mehdadi et al, 2017) and Artemisia herba-alba Asso (Nedjimi & Zemmiri, 2019). Ruta graveolens L. is categorised as xerohalophyte, as the optimum temperature for its germination is at 30°C (Mguis et al, 2011). Saeidnejad et al (2012) have inferred that germination differences could be due not only to the genetic variability of seeds, but also to differences in latitude within seed accessions are collected.…”

Section: Discussionmentioning

confidence: 99%

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Effect of abiotic stresses on germination behaviour of Ruta chalepensis

et al. 2021

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This work aims to highlight the optimal temperature for the seed germination of Ruta chalepensis, an important threatened ethnomedicinal shrub, and assess its germination tolerance against salinity and water stresses as well. For this, the seeds were incubated firstly under different temperatures (5 to 30°C). After that, at 20°C, germination tests were performed under different sodium chloride (NaCl) concentrations (0 to 273.9 mM) and various polyethylene glycol solutions (PEG6000) (0 to -2.20 bar). Final germination percentage, velocity coefficient and latency time were subsequently the germination patterns determined and analysed. The optimum temperature for germination was 15°C, in which the maximum final germination percentage (85%) was noticed; germination fell steadily, however, above and below this temperature and completely ceased at 30°C. Germination behaviour of R. chalepensis seeds under osmotic stress conditions showed a significant effect of both NaCl and PEG6000. Germination decreased whether sodium chloride or polyethylene glycol was increased in the medium (p < 0.05). Moreover, the salinity tolerance threshold was 205.4 mM, equivalent to 16 g L-1 NaCl, while water stress was -1.16 bar, corresponding to 80 g L-1 PEG6000. Beyond these thresholds, germination stopped. Dropping in velocity coefficient and postponing in latency time with increasing both stresses were recorded either. The sensitivity of R. chalepensis seeds to environmental stresses should be taken into account for successful conservation programmes, which should be implemented by sowing seeds and planting seedlings in fresh habitats with sufficient annual rainfall.

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Section: Discussionsupporting

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Effect of abiotic stresses on germination behaviour of Ruta chalepensis

et al. 2021

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“…This suggests that MeRV infection could have an effect on plant survival. Optimal temperature for seed germination of species from the Ruta genus is about 30°C ( Mguis et al, 2011 ), and consequently young plants are more abundant in summer. Given that maximum MeRV prevalence occurs in this season and decays afterward, it could be hypothesized that MeRV-induced mortality could be more frequent in young individuals.…”

Section: Discussionmentioning

confidence: 99%

Ecological Factors Affecting Infection Risk and Population Genetic Diversity of a Novel Potyvirus in Its Native Wild Ecosystem

2017

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Increasing evidence indicates that there is ample diversity of plant virus species in wild ecosystems. The vast majority of this diversity, however, remains uncharacterized. Moreover, in these ecosystems the factors affecting plant virus infection risk and population genetic diversity, two traits intrinsically linked to virus emergence, are largely unknown. Along 3 years, we have analyzed the prevalence and diversity of plant virus species from the genus Potyvirus in evergreen oak forests of the Iberian Peninsula, the main wild ecosystem in this geographic region and in the entire Mediterranean basin. During this period, we have also measured plant species diversity, host density, plant biomass, temperature, relative humidity, and rainfall. Results indicated that potyviruses were always present in evergreen oak forests, with a novel virus species explaining the largest fraction of potyvirus-infected plants. We determined the genomic sequence of this novel virus and we explored its host range in natural and greenhouse conditions. Natural host range was limited to the perennial plant mountain rue (Ruta montana), commonly found in evergreen oak forests of the Iberian Peninsula. In this host, the virus was highly prevalent and was therefore provisionally named mediterranean ruda virus (MeRV). Focusing in this natural host–virus interaction, we analyzed the ecological factors affecting MeRV infection risk and population genetic diversity in its native wild ecosystem. The main predictor of virus infection risk was the host density. MeRV prevalence was the major factor determining genetic diversity and selection pressures in the virus populations. This observation supports theoretical predictions assigning these two traits a key role in parasite epidemiology and evolution. Thus, our analyses contribute both to characterize viral diversity and to understand the ecological determinants of virus population dynamics in wild ecosystems.

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“…The authors observed a negative effect of NaCl and CaCl 2 salts on seed germination and vigor from osmotic potentials respectively of -0.3 and -0.2 MPa. Moreover, Mguis et al (2011) analyzed common rue seed germination (0 to 0.7 MPa NaCl) and concluded that it was significantly inhibited by a NaCl concentration greater than 0.1 MPa. Additionally, Yamashita et al (2009) found a reduction in the germination percentage of common rue seeds as NaCl concentration increased.…”

Section: Resultsmentioning

confidence: 99%

Effect of salt stress on germination and initial development of Ruta graveolens L

Barichello

Bastiani

Neves

2021

Hoehnea

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Salinization occurring through irrigation on arable land has been a growing concern worldwide. This study aimed to evaluate the germination and initial development of common rue subjected to different saline concentrations. Two salts (sodium chloride and calcium chloride) and five saline concentrations (zero,-0.1,-0.2,-0.3, and-0.4 MPa) were utilized. Germination tests, first germination count, seedling length and dry weight were employed to assess seed responses to the studied variations. Based on the results, the excess of salt reduces the germination percentage and the initial development of common rue seedlings, regardless of the substance used for stress induction.

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Effect of temperature and salinity on germination ofRuta graveolensL.

Cited by 7 publications

References 43 publications

Effect of abiotic stresses on germination behaviour of Ruta chalepensis

Effect of abiotic stresses on germination behaviour of Ruta chalepensis

Ecological Factors Affecting Infection Risk and Population Genetic Diversity of a Novel Potyvirus in Its Native Wild Ecosystem

Effect of salt stress on germination and initial development of Ruta graveolens L

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