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ABA and GA 3 increase carbon allocation in different organs of grapevine plants by inducing accumulation of non-structural carbohydrates in leaves, enhancement of phloem area and expression of sugar transporters
Murcia, Mauro German; Pontin, Mariela Ana; Reinoso, Herminda; Baraldi, Rita; Bertazza, Gianpaolo; Gomez Talquenca, Gonzalo; Piccoli, Patricia Noemí; Bottini, Ambrosio Rubén (2016)Grape quality for winemaking depends on sugar accumulation and metabolism in berries. Abscisic acid (ABA) and gibberellins (GAs) have been reported to control sugar allocation in economically important crops, although the ... -
ABA and GA3 regulate the synthesis of primary and secondary metabolites related to alleviation from biotic and abiotic stresses in grapevine
Murcia, Mauro German; Fontana, Ariel; Pontin, Mariela Ana; Baraldi, Rita; Bertazza, Gianpaolo; Piccoli, Patricia Noemí (2017-03)Plants are able to synthesize a large number of organic compounds. Among them, primary metabolites are known to participate in plant growth and development, whereas secondary metabolites are mostly involved in defense and ... -
Allium sativum produces terpenes with fungistatic properties in response to infection with Sclerotium cepivorum
Pontin, Mariela Ana; Piccoli, Patricia Noemí; Burba, Jose Luis; Bottini, Ambrosio Rubén (2015-07)This study investigated terpene biosynthesis in different tissues (root, protobulb, leaf sheath and blade) of in vitro -grown garlic plants either infected or not (control) with Sclerotium cepivorum, the causative agent ... -
Análisis de metabolitos secundarios involucrados en la agresividad de cepas de Fusarium spp. en cebolla (Allium cepa L.)
Bazterra, Delfina; Gonzalez, Roxana Elizabeth; Pontin, Mariela Ana; Quintas, Pamela Y.; Valdez, Jorge Gustavo; Caligiore Gei, Pablo Fernando (Asociación Argentina de Fitopatólogos (AAF), 2024-09)La podredumbre basal causada por F. oxysporum f. sp. cepae y Fusarium spp. es una de las enfermedades más importantes del cultivo de cebolla. Varios estudios han evidenciado variación en la virulencia entre cepas de Fusarium ... -
Azospirillum brasilense ameliorates the response of Arabidopsis thaliana to drought mainly via enhancement of ABA levels
Cohen, Ana Carmen; Bottini, Ambrosio Rubén; Pontin, Mariela Ana; Berli, Federico Javier; Moreno, Daniela Maria del Valle; Boccalandro, Hernan Esteban; Travaglia, Claudia Noemi; Piccoli, Patricia Noemí (2015-01)Production of phytohormones is one of the main mechanisms to explain the beneficial effects of plant growth‐promoting rhizobacteria (PGPR) such as Azospirillum sp. The PGPRs induce plant growth and development, and reduce ... -
Halotolerant native bacteria Enterobacter 64S1 and Pseudomonas 42P4 alleviate saline stress in tomato plants
Pérez Rodriguez, María Micaela; Pontin, Mariela Ana; Piccoli, Patricia Noemí; Lobato Ureche, Miguel Andrés; Gordillo, María Gabriela; Funes Pinter, Mariano Ivan; Cohen, Ana Carmen (Wiley, 2022-06)Salinity is one of the principal abiotic stresses that limit the growth and productivity of crops. The use of halotolerant plant growth-promoting rhizobacteria (PGPR) that increase the growth of salt-stressed crops is an ... -
Nitric oxide and abscisic acid regulate osmoprotective and antioxidative mechanisms related to water stress tolerance of grapevines
Pontin, Mariela Ana; Murcia, Mauro German; Bottini, Ambrosio Rubén; Fontana, Ariel; Bolcato, L.; Piccoli, Patricia Noemí (Wiley, 2021-03)Background and Aims: Exogenously applied nitric oxide (NO) and abscisic acid (ABA) are known to improve the tolerance of plants to abiotic stress. The effects of NO and ABA applications on physiological and metabolic ... -
Pseudomonas fluorescens and Azospirillum brasilense Increase Yield and Fruit Quality of Tomato Under Field Conditions
Pérez Rodriguez, María Micaela; Pontin, Mariela Ana; Lipinski, Victor Mario; Bottini, Ambrosio Rubén; Piccoli, Patricia Noemí; Cohen, Ana Carmen (Springer, 2020-09)Crop inoculation with plant growth-promoting rhizobacteria (PGPR) is a sustainable alternative to diminish the excessive use of chemical fertilizers in agriculture. However, there is little information about PGPR inoculation ... -
Quantitative Proteomics Analysis of ABA- and GA3-Treated Malbec Berries Reveals Insights into H2O2 Scavenging and Anthocyanin Dynamics
Murcia, Mauro Germán; Alonso, Rodrigo; Berli, Federico Javier; Arias, Leonardo; Bianchimano, Luciana; Pontin, Mariela Ana; Fontana, Ariel; Casal, Jorge José; Piccoli, Patricia Noemí (MDPI, 2024-09)Abscisic acid (ABA) and gibberellic acid (GA3) are regulators of fruit color and sugar levels, and the application of these hormones is a common practice in commercial vineyards dedicated to the production of table grapes. ... -
Role of ABA and Gibberellin A3 on gene expression pattern of sugar transporters and invertases in Vitis vinifera cv. Malbec during berry ripening
Murcia, Mauro German; Pontin, Mariela Ana; Piccoli, Patricia Noemí (2018-03)Sugars are key constituents that affect quality of grape berries, and consequently the grape metabolic profile relevant to wine’s industry. However, enzymes and transporter genes expression involved in sugar transport at ... -
Solar UV-B radiation modifies the proportion of volatile organic compounds in flowers of field-grown grapevine (Vitis vinifera L.) cv. Malbec
Gil, Mariana; Bottini, Ambrosio Rubén; Pontin, Mariela Ana; Berli, Federico Javier; Salomon, María Victoria; Piccoli, Patricia Noemí (2014-11)Ultraviolet-B solar radiation (UV-B) is an environmental signal with biological effects in different plant tissues. Recent investigations reported dramatic changes of terpenes with a protective role in plant tissues submitted ... -
Transcriptome changes in grapevine (Vitis viniferaL.) cv. Malbec leaves induced by ultraviolet-B radiation
Pontin, Mariela Ana; Piccoli, Patricia Noemí; Francisco, Rita; Bottini, Ambrosio Rubén; Martinez-Zapater, José M.; Lijavetzky, Diego (2010-10)Ultraviolet-B radiation (UV-B, 280-315 nm) is a natural component of sunlight, which has numerous regulatory effects on plant physiology. The nature of the response to UV-B is dependent on fluence rate, dose, duration and ... -
Volatile organic compounds characterized from grapevine (Vitis vinifera L. cv. Malbec) berries increase at pre-harvest and in response to UV-B radiation
Gil, Mariana; Bottini, Ambrosio Rubén; Berli, Federico Javier; Pontin, Mariela Ana; Silva, Maria Fernanda; Piccoli, Patricia Noemí (2013-12)Ultraviolet-B solar radiation (UV-B) is an environmental signal with biological effects in plant tissues. Recent investigations have assigned a protective role of volatile organic compounds (VOCs) in plant tissues submitted ...