Biochemical modulations in açaí palm ( Euterpe oleracea Mart.) under vegetative stages in an agroforestry system of the Amazon

Autor: Mauro Junior Borges Pacheco, Thiago Costa Viana, Jessivaldo Rodrigues Galvão, Ismael de Jesus Matos Viégas, Tiago Kesajiro Moraes Yakuwa, Susana Silva Conceição, Gizele Odete de Sousa
Rok vydání: 2020
Předmět:
Zdroj: Journal of Plant Nutrition and Soil Science. 184:76-87
ISSN: 1522-2624
1436-8730
DOI: 10.1002/jpln.202000240
Popis: Background: The acai palm (Euterpe oleracea Mart.) is a species native to the Amazon region, where the largest stock of these palms is located in the state of Para, Brazil. This species occurs predominantly spontaneously in the plateau and plains areas of the Amazonian estuary. Water deficit is the main limiting factor of plants, negatively regulating the growth, metabolism and productivity of crops. Aim: This study aimed to deepen the ecophysiological and biochemical responses of Euterpe oleracea Mart. to a water deficiency condition in agroforestry systems. Methods: The study was carried out in a defined period of lowest rainfall in the region, which runs from July to October, averaging 58.6 mm for those months, such as location, age, uniformity, health, development, height and diameter of the stipe, in order to determine the biochemical variables. Responses to biochemical components under water deficit such as starch, sucrose and carbohydrates increased for rachis and fruits. Results: The concentrations of ammonia and proteins increased in stems and fruits. For amino acids, the structures that accumulated these organic compounds were fruits and arrow. One of the most representative amino acids against water deficiency is proline, and its increase in plant tissues is due to osmoprotein function, especially for structures such as rachis, fruit and petioles + rachis. Conclusions: Therefore, Euterpe oleracea Mart. presents excellent physiological plasticity to deal with stressful conditions as well as adaptive behavior to overcome this deficiency.
Databáze: OpenAIRE
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