Journal of Food, Agriculture and Environment

Decrease in photosynthetic pigments promotes negative consequences on carbon compounds in young Euterpe oleracea plants submitted to progressive water deficiency

Author(s):

Emilly dos Santos Pereira ¹, Allan Klynger da Silva Lobato ¹*, Odyone Nascimento da Silva ¹, Argemiro Pereira Martins Filho ¹, Carla Leticia Figueredo de Carvalho Souza ¹, Tiago Rodrigues Ferreira ¹, Gustavo Antonio Ruffeil Alves ¹, Elaine Maria Silva Guedes ¹, Ismael de Jesus Matos Viégas ¹, Ricardo Shigueru Okumura ¹, Augusto José Silva Pedroso ¹, Roberto Cezar Lobo da Costa ¹, Benedito Gomes dos Santos Filho ¹ 

Recieved Date: 2014-03-16, Accepted Date: 2014-09-20

Abstract:

This research aimed to (i) evaluate the interference of the water supply on photosynthetic pigments and to (ii) determine if there are changes in carbon compounds of young Euterpe oleracea plants subjected to progressive water deficit. The experimental design was in factorial randomized entirely with two water conditions (water deficit and control) and four evaluation points (0, 6, 12 and 18 days). The parameters evaluated were leaf relative water content and hydrogen peroxide, chlorophylls and carotenoids, as well as total soluble carbohydrates, reducing carbohydrates, starch and sucrose. The water deficit caused reduction in leaf relative water content and increase in levels of hydrogen peroxide, and it also provoked decrease in all photosynthetic pigments, being the changes more intense and significant after 18 days. In relation to carbon metabolism, the water deficit induced oscillation in levels of total soluble carbohydrates and reducing carbohydrates, as well as significant increases in starch during all evaluated points and in sucrose until the 12^th day. Therefore, this study reveals that progressive water deficit provoked reductions in chlorophylls and carotenoids, and these modifications induced negative consequences on translocation and utilization of carbon compounds in young Euterpe oleracea plants.

Keywords:

Euterpe oleracea, water deficit, chlorophylls, sucrose, starch, carbon metabolism

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Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 3&4
Category: Agriculture
Pages: 297-302

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