Proline and Algal Extract to Alleviate the Abiotic Stress in Mango ‘Tommy Atkins’ in the Tropical Semiarid

• Published in: Erwerbsobstbau 2022-03, Vol.64 (1), p.115-126
• Main Authors: da Cunha, Jenilton Gomes, Cavalcante, Ítalo Herbert Lucena, da Silva, Marcelle Almeida, e Amariz, Renata Araújo, do Carmo, Raí Nascimento, Lobo, Jackson Teixeira
• Format: Article
• Language: English
• Subjects: Abiotic stress; Actuation; Agriculture; Algae; Amino acids; Ascophyllum nodosum; Ascorbic acid; Biomedical and Life Sciences; Catalase; Enzymes; Experiments; L-Ascorbate peroxidase; Leaves; Life Sciences; Mangoes; Original Article; Originalbeitrag; Peroxidase; Plant Sciences; Proline; Proteins; Regression models; Ripening; Semi arid environments; Semiarid environments; Superoxide dismutase; Variance analysis; Water shortages
• ISSN: 0014-0309; 1439-0302
• DOI: 10.1007/s10341-021-00628-9

The accumulation of proline as an answer to abiotic stresses has already been studied extensively. Even the same, the use of this amino acid linked to the use of marine algae ( Ascophyllum nodosum ) in the mangoes breeding has not been described in scientific literature yet. The objective of this study was to evaluate the effects of proline and algal extracts to alleviate the abiotic stress in mango ‘Tommy Atkins’ grown in the semiarid environment. Five consecutive individual experiments were performed in the farm FRUTAVI/ARGO BRASIL in Petrolina (State of Pernambuco, Brazil) under randomized blocks design with factorial scheme 4 X 2 corresponding to 1) concentrations of proline (Pro): 0.0% (without proline), 0.287; 0.575; and 1.150%; and 2) algal extract (AE) (presence and absence). We assessed the leaf concentration of free proline, total amino acids, total soluble proteins, and activity of the enzymes catalase (CAT), ascorbate peroxidase (APX), and superoxide dismutase (SOD). Data were submitted to ANOVA by F test and regression model adjustment. The leaf concentrations of proline displayed a linear behavior, with significant increases of the concentration of this amino acid in the experiments 2, 3, 4, and 5. In these experiments, the total amino acids and the total soluble proteins varied along all the study periods, based on the actuation of the factors AE X Pro. The activity of the enzymes CAT, APX, and SOD was higher in those plants treated exclusively with proline. These results prove the protection provided by the proline during the water shortage period. This study highlighted that the association between the proline and the algal extract from Ascophyllum nodosum promotes significant increases in the biochemical and enzymatic responses of plants of mango plants ‘Tommy Atkins’ during the ripening of the branches.