Pre-Harvest MeJA Application Counteracts the Deleterious Impact of Al and Mn Toxicity in Highbush Blueberry Grown in Acid Soils
Year: 2021
Type: article
Abstract: Volcanic ash-derived soils are characterized by low pH (pH ≤ 5.5) with increased concentrations of aluminum (Al3+) and manganese (Mn2+), which decreases plant growth, fruit quality, and yield. Methyl jasmonate (MeJA) improves abiotic stress tolerance. Our work aimed to evaluate the application of MeJA’s impact on the growth, antioxidant defense, and fruit quality of highbush blueberry grown under Al and Mn toxicity. A field assay was conducted with four-year-old bushes of highbush blueberry cultivar Legacy under eight treatments (Control, Al (87% of Al saturation), Mn (240 mg kg−1), and Al–Mn with and without MeJA application). Physiological, biochemical, and fruit quality parameters were measured. Growth rate significantly decreased with Al (20%), Mn (45%), and Al–Mn (40%). MeJA application recovered the growth rate. Photosynthetic parameters were not affected. Antioxidant activity increased under all treatments compared with controls, being higher with MeJA application. Total phenols (TP) were decreased in plants under Al (43%) and Mn (20%) compared with controls. MeJA application increased TP in all treatments. Fruits of bushes under Al and Mn toxicity with MeJA applications exhibited an increase in fruit firmness and weight, maintaining suitable contents of soluble solids. Our results provide insights about the beneficial effect of MeJA application on growth, antioxidant properties, and fruit quality of highbush blueberry plants grown in acid soils under Al and Mn toxicity.
Source: Plants
Institutions: Universidad Católica de Temuco, Universidad de La Frontera
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $1,944
Awards: IMPROVING GROWTH PRODUCTIVITY AND FRUIT QUALITY OF VACCINIUM CORYMBOSUM CULTIVARS EXPOSED TO AL-TOXICITY AND DROUGHT IN ACID ANDISOL PHYTOHORMONES MANAGEMENT AS A STRATEGY UNDER A CLIMATE CHANGE SCENARIO, ROLE OF SALICYLIC ACID AS A MODULATOR OF ABSCISIC ACID BIOSYNTHESIS TO AMELIORATE DROUGHT STRESS MAINTAINING PHOTOSYNTHESIS AND PLANT GROWTH IN MAQUI (ARISTOTELIA CHILENSIS) A TOOL TO IMPROVE FRUIT YIELD QUALITY AND WATER-USE EFFICIENCY., PHYTOHORMONES AND ITS ASSOCIATION WITH RESISTANCE MECHANISMS TO AL AND MN TOXICITY IN HIGHBUSH BLUEBERRY CULTIVARS GROWING IN ACID SOIL A STRATEGY FOR IMPROVING YIELD AND FRUIT QUALITY OF PLANTS., ROLE OF BORON NUTRITION AND ITS ASSOCIATION WITH ALUMINUM TOXICITY ON PRODUCTIVITY AND FRUIT QUALITY OF VACCINIUM CORYMBOSUM L. GROWN IN ACID SOILS OF SOUTHERN CHILE., G8362444204
OpenAlex ID: W4200584975