Article
Plant Sciences
Ines Leitao, Luisa L. Martins, Luisa Carvalho, M. Conceicao Oliveira, M. Matilde Marques, Miguel P. Mourato
Summary: The study found that contamination of lettuce plants with acetaminophen (ACT) can induce oxidative stress and increase stress indicators, while also causing significant changes in the enzymatic activities related to the antioxidative system. Additionally, ACT has a specific impact on the glutathione cycle in contaminated leaves, and induces an antioxidative response in lettuce plants with significant increases in anthocyanin content.
Article
Plant Sciences
Fernando Ferrari Putti, Camila Pires Cremasco, Alfredo Bonini Neto, Ana Carolina Kummer Barbosa, Josue Ferreira da Silva Junior, Andre Rodrigues dos Reis, Bruno Cesar Goes, Bruna Arruda, Luis Roberto Almeida Gabriel Filho
Summary: This study used a mathematical model based on fuzzy logic to estimate the replacement rates of magnetic water provided by irrigation and compared it with multiple polynomial regression analysis. The results showed that irrigating with magnetic water resulted in higher biometric values for lettuce, and the fuzzy model provided a more accurate adjustment compared to multiple polynomial regression.
Article
Agronomy
Jelka Sustar-Vozlic, Kristina Ugrinovic, Marko Maras, Eva Kristkova, Ales Lebeda, Vladimir Meglic
Summary: Phenotypic variation was observed among 51 accessions of lettuce landrace 'Ljubljanska ledenka'. Cluster and principal component analysis divided the accessions into four clusters, with anthocyanin coloration being a key distinguishing factor. AFLP dendrogram showed similar clustering patterns to phenotypic dendrogram, with a high correlation between phenotypic and molecular data.
GENETIC RESOURCES AND CROP EVOLUTION
(2021)
Article
Horticulture
Tatiana P. L. Cunha-Chiamolera, Arthur Bernardes Cecilio Filho, Durvalina M. M. Santos, Fernando M. Chiamolera, Ramon G. Guevara-Gonzalez, Silvana Nicola, Miguel Urrestarazu
Summary: This study evaluated the growth, yield, and economic benefit of two lettuce cultivars under an intercropping system. Significant differences were found in stress and activity enzymatic indicators between lettuce cultivars. Yield loss varied among cultivars, with greater loss in Lucy Brown cultivar. economic benefit was only found in the Vanda cultivar. Therefore, selecting appropriate cultivars is crucial for the agronomic success of intercropping systems.
Article
Plant Sciences
Neo Macuphe, Oluwafemi Omoniyi Oguntibeju, Felix Nchu
Summary: Endophytic entomopathogenic fungi like Beauveria bassiana can improve yield and quality of lettuce by promoting growth and protecting against insect infestations. This study found that B. bassiana was pathogenic to aphids, increased micro-nutrient tissue contents, and enhanced antioxidant activities in plants, highlighting its potential for biofortification of nutritive and medicinal qualities.
Article
Environmental Sciences
Nora Kovats, Katalin Hubai, Tsend-Ayush Sainnokhoi, Gabor Teke
Summary: The purpose of the study was to investigate the risk of consuming vegetables exposed to toxic air pollutants, especially PAHs. The study found comparable PAH concentrations in some of the sampled villages to relatively polluted regions in the world, with biomass burning and fossil fuel usage identified as the major sources of PAHs in rural environments. The study highlighted the importance of analyzing individual pollution sources.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Review
Agronomy
Kailiu Xie, Ismail Cakmak, Shiyu Wang, Fusuo Zhang, Shiwei Guo
Summary: This review summarizes the interactions between potassium and magnesium in plants, focusing on their root uptake, root-to-shoot translocation, and distribution. The antagonistic effect of potassium on magnesium is stronger, highlighting the importance of balanced use of potassium and magnesium fertilizers for sustaining high plant-available magnesium and alleviating potassium-induced magnesium deficiency.
Article
Horticulture
Fernando Ferrari Putti, Eduardo Festozo Vicente, Prinscilla Pamela Nunes Chaves, Luis Paulo Benetti Mantoan, Camila Pires Cremasco, Bruna Arruda, Juliane Cristina Forti, Josue Ferreira Silva, Marcelo Campos, Andre Rodrigues dos Reis, Luis Roberto Almeida Gabriel
Summary: Climate change is affecting vegetable production through changes in rainfall patterns and soil moisture. To mitigate this, technologies such as magnetically treated water are being explored to maintain ideal soil moisture for plant uptake. This study investigated the effect of magnetically treated water on lettuce biomass and nutrient uptake, finding that it improved nitrogen assimilation and resulted in higher agronomical characteristics and yield.
Article
Environmental Sciences
Arnon Afonso de Souza Cardoso, Ana Paula Pereira Nunes, Eder Rodrigues Batista, Lorena del Carmen Hernandez Nataren, Marcio Felipe Pinheiro Neri Nunes, Fabricio Teixeira de Lima Gomes, Aline do Amaral Leite, Luiz Roberto Guimaraes Guilherme, Valdemar Faquin, Maria Ligia de Souza Silva
Summary: The study evaluated the effects of soil sulfate supply on soil Ba fractions, plant growth, and Ba and S uptake by lettuce plants. The results showed that sulfate supply decreased the extractable-Ba fraction in soil, alleviated the phytotoxicity of Ba on plants, and enhanced plant growth.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Horticulture
Christina Chaski, Spyridon A. Petropoulos
Summary: This study examines the potential of using biostimulants to improve the growth of field-grown lettuce plants under deficit irrigation. The results show that different types of biostimulants can alleviate the negative effects of water shortage on the growth and chlorophyll content of Romaine-type lettuce plants, while the impact on Batavia-type lettuce plants is less significant. Therefore, the application of biostimulants can improve the growth of leafy vegetables to some extent, but the effectiveness may vary depending on the genotype.
Article
Agronomy
Teresa Fuertes-Mendizabal, Isabel Salcedo, Ximena Huerfano, Patrick Riga, Jose Maria Estavillo, David avila Blanco, Miren Karmele Dunabeitia
Summary: This study investigates the potential application of frass, the residual excrement of mealworm larvae, as an organic fertilizer for crops. When combined with a biostimulant based on efficient microorganisms, frass can be mineralized effectively due to its high organic matter content. The experiment conducted using lettuce plants under greenhouse conditions shows that frass can be a beneficial organic fertilizer, providing macronutrients and promoting lettuce aerial biomass. However, the application rate of frass needs to be carefully controlled to avoid potential negative effects on plant growth, especially root development, which may be caused by an increase in potentially pathogenic fungi. The addition of a PGP-based biostimulant counteracts the negative effects and enhances nutrient uptake, biomass, and quality of lettuce, while also promoting beneficial microbial diversity and reducing potentially pathogenic fungi. The positive synergy between frass and the PGP-based biostimulant has significant implications for the development of new organic fertilization strategies.
Article
Horticulture
Martina Puccinelli, Fernando Malorgio, Luca Incrocci, Irene Rosellini, Beatrice Pezzarossa
Summary: The study found that adding potassium iodide and sodium selenate separately or simultaneously to the nutrient solution in a floating system and aeroponics increased the content of iodine and selenium in lettuce leaves without any negative effects on plant growth. Post-harvest quality of leaves was also not affected by the treatments.
Article
Horticulture
Mostafa Abdelkader, Luidmila Voronina, Olga Shelepova, Mikhail Puchkov, Elena Loktionova, Nursaule Zhanbyrshina, Rakhiya Yelnazarkyzy, Aigul Tleppayeva, Alexander Ksenofontov
Summary: The application of exogenous amino acids in lettuce plants can improve their tolerance to salt stress by enhancing physiological and metabolic processes. Threonine and lysine were found to be effective in reducing the negative impacts of salt stress. These amino acids decreased electrical conductivity and chloride ions, while increasing potassium uptake and chlorophyll content. Additionally, they significantly decreased peroxidase activity.
Article
Plant Sciences
Ivan G. Tarakanov, Daria A. Tovstyko, Maxim P. Lomakin, Alexander S. Shmakov, Nikolay N. Sleptsov, Alexander N. Shmarev, Vladimir A. Litvinskiy, Alexander A. Ivlev
Summary: The optimization of LED lighting protocols for indoor plant growing systems requires both basic and applied research. This study investigated the plant responses to different wavelengths of light, showing that red light promoted photorespiration while blue light accelerated carboxylation. Observations of light environments missing specific spectral regions supported these findings.
Article
Agronomy
Duran Yavuz, Musa Seymen, Unal Kal, Zeliha Atakul, Omer Burak Tanriverdi, Onder Turkmen, Nurcan Yavuz
Summary: Drought has negative effects on crop production in water-limited areas, requiring the implementation of different methods to mitigate water stress on plants. This study aimed to enhance the water stress tolerance of lettuce by using exogenous sodium nitroprusside (SNP) as a nitric oxide donor. Results showed that increasing doses of SNP partially increased water consumption in lettuce under both full and deficit irrigation. The highest water consumption (125.1 mm) and yield (39.1 t/ha) were observed in lettuce plants treated with I100 and 100 mu M SNP. SNP significantly increased lettuce yield and irrigation water productivity under deficit and full irrigation. It also enhanced chlorophyll synthesis, catalase (CAT) and peroxidase (POD) activity, and reduced membrane damage in lettuce leaves.
AGRICULTURAL WATER MANAGEMENT
(2023)