Review. Some advances on the knowledge of sucrose-transporting proteinsin monocotyledon plants. A new transporter in sugarcane

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Published: Jul 4, 2012
Keywords:
nutrient transport, sucrose, monocotyledons, sugarcane

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Isabel Medina
Universidad de La Habana (UH)

Abstract

Sucrose transporters have a pivotal role insucrose transport through membranes and its distributionalong the plant from source tissues to sinks and amongdifferent sinks. Although a sucrose-transporting protein hasbeen postulated since late 70´s, it was not proved until 1992,when the first DNAc sequence of a sucrose transporter wasidentified in Spinacea oleracea, which was subjected tofunctional, biochemical and structural analyses. The firstsucrose transporter identified in monocotyledon plants wasin Oryza sativa, 1997, followed by the other four in O. sativa,Zea mays (3), Triticum aestivum (3), Hordeum vulgare (2),Saccharum hybrid (1), Ananas comosus (1), Bambusaoldhamii (1) and Sorghum bicolor (2). This paper intends toreview the current knowledge about sucrose transporters inthese plants, besides presenting the first evidence of a secondsucrose transporter in Saccharum hybrid, ShSUT4. Thisprotein has a high identity deduced sequence with renownedfunctionality transporters and, similar to them, it has beenpredicted to possess a secondary structure of 12transmembrane domains. Finally, it has also been spotted inthe tonoplast, like some other sucrose transporters of CladeSUT4 in the phylogenetic tree.

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How to Cite
Medina, I. (2012). Review. Some advances on the knowledge of sucrose-transporting proteinsin monocotyledon plants. A new transporter in sugarcane. Cultivos Tropicales, 32(1), 18–29. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/50
Issue
Vol. 32 No. 1 (2011)
Section
Original Article

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