42 documents found, page 1 of 5
Enhancing growth, nutrient uptake and flowering of Tagetes patula plants throug...
Vieira, João; Saque, Moisés; Viana, Catarina; Rodrigues, Maria Helena; Guerreiro David Coelho, Luísa Isabel; Gama, Florinda; Varela, João; Pereira, HugoTagetes patula L. is a prominent plant that is frequently used for its ornamental value. Marigolds are sources of various compounds of great interest to agricultural, pharmaceutical, and nutritional industries. Microalgae can be applied as a biostimulant as they have multifunctional properties in agriculture, namely facilitating nutrient uptake, improving crop performance and physiological status, and thus incr...
Microbial and sensory evaluation of Halophytes cultivated in a soilless system ...
Quintas, Célia; Ribeiro Lima, Alexandre; Gama, Florinda; Nunes, Carla; Salazar, Miguel; Barreira, LuísaThe increasing interest in halophytes as sustainable crops and their potential functional properties highlights the need to understand how cultivation conditions affect their quality for human consumption. The present study aimed to evaluate the influence of salinity on the microbial quality of the halophytes Disphyma crassifolium, Inula crithmoides, Mesembryanthemum nodiflorum, and Suaeda maritima, cultivated ...
Fruit quality response of strawberry cv 'antilla' after application of calcium
Palencia, Pedro; Pestana, Maribela; Saavedra, Teresa; Gama, Florinda; Correia, Pedro JoséAs an important economically and nutritionally valuable fruit, strawberry has been planted everywhere worldwide, which, due to the shortage of arable land, has created an obstacle to successional farming. The study investigates the effect of calcium application in strawberry fruit quality, including fruit firmness and ºBrix. Strawberries (Fragaria × ananassa Duch. 'Antilla') grown in a soilless system in a gree...
Evaluation of Chlorella vulgaris application as a biostimulant for lettuce grow...
Vieira, João; Saque, Moisés; Gama, Florinda; Viana, Catarina; Guerreiro David Coelho, Luísa Isabel; Rodrigues, Maria Helena; Varela, João; Pereira, HugoThis study evaluated the effect of Chlorella vulgaris application on the growth of soilless-grown lettuce (Lactuca sativa cv. 'Oreja de Mulo') cultivated outdoors. Microalgae suspensions were applied weekly at concentrations of 0.5, 2.0, and 5.0 g L(-)1. Plants grown without the application of microalgae were used as the control. Leaf chlorophyll concentration was registered at the beginning and at the end of t...
Chlorella vulgaris and tetradesmus obliquus protect spinach (Spinacia oleracea ...
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, B...
Chlorella vulgaris and Tetradesmus obliquus Protect Spinach (Spinacia oleracea ...
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, B...
Quercetin promotes the recovery of iron chlorosis in strawberry plants
Pestana, Maribela; Saavedra, Teresa; Gama, Florinda; Rodrigues, Maria A.; Varennes, Amarilis de; Correia, Pedro José; Silva, José Paulo daIron (Fe) chlorosis is very common in plants cultivated in calcareous soils of the Mediterranean basin and is usually corrected by the application of Fe chelates to the soil, which can have a negative impact on the environment. The aim of this experiment was to assess the role of quercetin, a natural compound widely present in plants and known to bind Fe, in correcting Fe chlorosis when supplied in the Hoagland...
Isolation and selection of protein-rich mutants of chlorella vulgaris by fluore...
Trovão dos Santos, Mafalda; Schüler, Lisa; Pedroso, Humberto; Reis, Ana; Santo, Gonçalo Espírito; Barros, Ana; Correia, Nádia; Ribeiro, JoanaMicroalgae are a promising feedstock with proven biostimulant activity that is enhanced by their biochemical components (e.g., amino acids and phytohormones), which turns them into an appealing feedstock to reduce the use of fertilisers in agriculture and improve crop productivity and resilience. Thus, this work aimed to isolate protein-rich microalgal mutants with increased biostimulant activity. Random mutage...
Nutritional performance of Five Citrus rootstocks under different Fe levels
Pestana, Maribela; García-Caparrós, Pedro; Saavedra, Teresa; Gama, Florinda; Abadía, Javier; Varennes, Amarilis de; Correia, Pedro JoséIron is an essential micronutrient for citrus, playing an important role in photosynthesis and yield. The aim of this paper was to evaluate the tolerance to Fe deficiency of five citrus rootstocks: sour orange (S), Carrizo citrange (C), Citrus macrophylla (M), Troyer citrange (T), and Volkamer lemon (V). Plants were grown for 5 weeks in nutrient solution that contained the following Fe concentrations (in µM): 0...
Silencing of FRO1 gene affects iron homeostasis and nutrient balance in tomato ...
Gama, Florinda; Saavedra, Teresa; Dandlen, Susana; García‐Caparrós, Pedro; de Varennes, Amarilis; Nolasco, Gustavo; Correia, Pedro JoséBackgroundIron chlorosis is an abiotic stress of worldwide importance affecting several agronomic crops. It is important to understand how plants maintain nutrient homeostasis under Fe deficiency and recovery. AimsWe used the virus-induced gene silencing (VIGS) method to elucidate the role of the FRO1 gene in tomato plants and identify the impact on regulation of the root ferric-chelate reductase (FCR) activity...