Spatial distribution and dynamics of sucrose metabolising enzymes in radiation induced mutants of sugarcane

Copyright © 2016 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 100(2016) vom: 22. März, Seite 85-93
1. Verfasser: Mirajkar, Shriram J (VerfasserIn)
Weitere Verfasser: Suprasanna, Penna, Vaidya, Eknath R
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Induced mutants Invertases Source–sink relationship Sucrose phosphate synthase Sucrose synthase Sugar accumulation Sugarcane Sucrose 57-50-1
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245 1 0 |a Spatial distribution and dynamics of sucrose metabolising enzymes in radiation induced mutants of sugarcane 
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500 |a Date Revised 30.09.2020 
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520 |a Copyright © 2016 Elsevier Masson SAS. All rights reserved. 
520 |a Sucrose metabolism in various source and sink organs of developing sugarcane (Saccharum officinarum L.) plant is accompanied with continuous synthesis and cleavage. In this regard, the involvement of four major enzymes viz. sucrose synthase (SS), sucrose phosphate synthase (SPS), soluble acid (SAI) and neutral invertases (NI) is considered crucial. In this study, we have analysed in vivo enzymatic activity of 12th month old field grown radiation-induced sugarcane mutants identified for sucrose accumulation. The mutants showed significant differences in the spatial enzymatic regulation in leaves, immature and mature internodes; SPS and SS activities were found highest in high sucrose accumulating mutants (AKTS-02 and AKTS-20) along with lower levels of SAI activity. Overall positive correlation of SPS, SS and negative correlation of SAI, NI activities with sucrose content of the respective tissue types was observed. The SPS activity was found strongly associated with sucrose content in leaves (r(2) = 0.558) and internodes (r(2) = 0.514), whereas, the SAI activity was found significant in leaves (r(2) = 0.379) and weakly associated in internodal tissues (r(2) = 0.248). However, the associations were found to be non-significant for SS and NI activities in both leaves and internodes. Despite this, the differences in the SPS and SAI activities (SPS-SAI) in leaves (r(2) = 0.828) and internodal tissues (r(2) = 0.619) had shown greater influence on net sucrose synthesis and accumulation. To summarize, our results suggest differential sugar metabolism in the induced mutants and that such contrasting mutant germplasm with a relatively uniform genetic makeup can be useful in molecular studies on sucrose accumulation 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Induced mutants 
650 4 |a Invertases 
650 4 |a Source–sink relationship 
650 4 |a Sucrose phosphate synthase 
650 4 |a Sucrose synthase 
650 4 |a Sugar accumulation 
650 4 |a Sugarcane 
650 7 |a Sucrose  |2 NLM 
650 7 |a 57-50-1  |2 NLM 
700 1 |a Suprasanna, Penna  |e verfasserin  |4 aut 
700 1 |a Vaidya, Eknath R  |e verfasserin  |4 aut 
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773 1 8 |g volume:100  |g year:2016  |g day:22  |g month:03  |g pages:85-93 
856 4 0 |u http://dx.doi.org/10.1016/j.plaphy.2015.12.018  |3 Volltext 
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