Assessment of sucrose transporters, metabolites and sucrose phosphate synthase in different sugarcane tissues

Assessment of sucrose transporters, metabolites and sucrose phosphate synthase in different... The expression of sucrose-phosphate synthase II (SPSII) and sucrose transporters ShSUT1A and ShSUT4 were determined by RT-PCR and qRT-PCR in the sink and source leaves and in rind and pith of mature internodes of four high-yielding Hawaiian sugarcane cultivars. Expression of SPSII, ShSUT1A, and ShSUT4 was lower in pith than in rind, except in one cultivar, but else quite similar in the cultivars. The strong expression of transporter ShSUT4 in the rind of the internodes may hint to a special role of ShSUT4 in the rind. ShSUT4-expression in the sink and source leaves was similar in all four cultivars, whereas large differences were found for the expression of ShSUT1A and SPSII between the source and sink leaves and between the cultivars. The levels of sucrose precursors were doubled in source leaves compared to sink leaves, whereas they were higher in immature internode compared to mature internode. The role of sucrose transporters and SPSII in leaves and internodes is discussed, but the large differences, which were observed in the transcript levels of SPSII and sucrose transporters between some cultivars, although all the cultivars were similarly high-yielding cultivars, show that SPSII and SUT transcript levels cannot be used as indicators of high-yield cultivars. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physiology and Molecular Biology of Plants Springer Journals

Assessment of sucrose transporters, metabolites and sucrose phosphate synthase in different sugarcane tissues

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Publisher
Springer India
Copyright
Copyright © 2017 by Prof. H.S. Srivastava Foundation for Science and Society
Subject
Life Sciences; Plant Sciences; Plant Physiology; Biological and Medical Physics, Biophysics; Cell Biology
ISSN
0971-5894
eISSN
0974-0430
D.O.I.
10.1007/s12298-017-0454-7
Publisher site
See Article on Publisher Site

Abstract

The expression of sucrose-phosphate synthase II (SPSII) and sucrose transporters ShSUT1A and ShSUT4 were determined by RT-PCR and qRT-PCR in the sink and source leaves and in rind and pith of mature internodes of four high-yielding Hawaiian sugarcane cultivars. Expression of SPSII, ShSUT1A, and ShSUT4 was lower in pith than in rind, except in one cultivar, but else quite similar in the cultivars. The strong expression of transporter ShSUT4 in the rind of the internodes may hint to a special role of ShSUT4 in the rind. ShSUT4-expression in the sink and source leaves was similar in all four cultivars, whereas large differences were found for the expression of ShSUT1A and SPSII between the source and sink leaves and between the cultivars. The levels of sucrose precursors were doubled in source leaves compared to sink leaves, whereas they were higher in immature internode compared to mature internode. The role of sucrose transporters and SPSII in leaves and internodes is discussed, but the large differences, which were observed in the transcript levels of SPSII and sucrose transporters between some cultivars, although all the cultivars were similarly high-yielding cultivars, show that SPSII and SUT transcript levels cannot be used as indicators of high-yield cultivars.

Journal

Physiology and Molecular Biology of PlantsSpringer Journals

Published: Jun 6, 2017

References

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