Browsing by Issue Date, starting with "2024-06"
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- Chlorella vulgaris and Tetradesmus obliquus Protect Spinach (Spinacia oleracea L.) against Fusarium oxysporumPublication . Viana, Catarina; Genevace, Méanne; Gama, Florinda; Guerreiro David Coelho, Luísa Isabel; Pereira, Hugo; Varela, João; Reis, MárioChlorella vulgaris and Tetradesmus obliquus were tested as biocontrol agents against the phytopathogenic fungus Fusarium oxysporum. This evaluation was conducted through in vitro and in vivo trials with spinach (Spinacia oleracea L.). The in vitro trials showed that C. vulgaris and T. obliquus were able to inhibit the phytopathogen, showing a similar inhibitory effect to that of the positive controls (Rovral, BASF® and Biocontrol T34, Biocontrol Technologies® S.L.). C. vulgaris aqueous suspensions at 3.0 g L−1 led to a hyphal growth of 0.55 cm, each corresponding to a reduction of 63% of fungal growth. With T. obliquus, the hyphal growth was 0.53 cm when applied at a concentration of 0.75 g L−1, having an inhibition of fungus growth of 64%. Thereafter, these results were validated in an in vivo trial on spinach using the same controls. The results revealed a lower severity and disease incidence and a reduction in the disease’s AUDPC (area under the disease progress curve) when spinach was treated with the microalgae suspensions. Overall, these findings highlight the potential of C. vulgaris and T. obliquus suspensions as promising biocontrol agents against F. oxysporum in spinach when applied through irrigation.
- Parental involvement in school and quality of life: a longitudinal study with Portuguese parents during the COVID-19 pandemic periodPublication . BELÉM MOCHO ALCAPARRA, HELENA SOFIA; Martins, Cátia; Marcelo, Beatriz; Ferreira Cunha, Francisca; Nunes, CristinaObjectivesDuring the COVID-19 pandemic in Portugal, the lockdown periods were particularly challenging for families, and were marked by school closures and disruptions in work and educational routines, that may have significantly impacted children's well-being. The present study aims to analyse Parental Involvement in School (PIS) during the period of COVID-19 in Portugal and its relation to children's Quality of Life (QoL). The level of PIS was assessed at two times: (T1) during the first lockdown and (T2) at the end of the school year.MethodThe sample consisted of 131 parents, aged between 29 and 55 years, and 71.8% were mothers. The family's sociodemographic characteristics were assessed, as well as the Parental Involvement in School and the children's QoL.ResultsIn general, the results revealed that families evaluate child's QoL as higher in T2 and PIS and authoritative style were significant predictors of children's QoL in the two times and a mediation effect of the authoritative style was found.ConclusionBased on these results, the article discusses practical implications to promote PIS and children's QoL. What is already known about this topic: During the pandemic, different contexts provided children with different learning opportunities.Parental involvement in school is associated with better outcomes, however its relationship with quality of life remains understudied.There are few studies that investigate inequalities in parental involvement in school during the COVID-19 lockdown period.What does this topic add: Parents reveal more positive perceptions regarding their involvement and children's quality of life after a period of lockdown due to COVID-19.Parental involvement in school could be a protective factor that allows families to thrive in the face of adversity, in this case a period of lockdown.The higher socio-economic status and higher educational level of the parents seem to have a positive contribution to parental involvement in school.