Impact of Climate Change on Sucrose Synthesis in Sugarcane Varieties

Shanthi, R. M.; Alarmelu, S.; Swamy, H. K. Mahadeva; Pathy, T. Lakshmi

doi:10.1007/978-981-19-3955-6_2

Cited by 9 publications

(5 citation statements)

References 63 publications

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“…They also reported that an average daily temperature of 12-14 • C would be more desirable for proper ripening, and drastic declines in temperature below 8 • C may negatively affect enzyme activities and reduce sugar recovery. The results observed in this study (i.e., increased FR sucrose production at 14.2 • C) agree with the study of Shanthi et al [30].…”

Section: Variance Components For Cane-and Sucrose-yield-related Traitssupporting

confidence: 93%

“…Masri and Amein [28] and Milligan et al [29] found that sugarcane genotypes varied more significantly for sucrose-yield-related traits in second ratoon crops than PC and FR crops. Shanti et al [30] reported that lower air temperatures during the maturation phase to harvest could change enzymatic activities, favoring high sucrose accumulation in stalks. They also reported that an average daily temperature of 12-14 • C would be more desirable for proper ripening, and drastic declines in temperature below 8 • C may negatively affect enzyme activities and reduce sugar recovery.…”

Section: Variance Components For Cane-and Sucrose-yield-related Traitsmentioning

confidence: 99%

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Genetic Variability and Clustering Patterns of Sugarcane (Saccharum spp.) Germplasms with Respect to Sucrose-Related Traits

Momotaz,

Coto Arbelo,

Gordon

et al. 2024

IJPB

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Fifty-five sugarcane genotypes from around the world were collected and evaluated for potential use as parental material in the USDA ARS Canal Point (CP) sugarcane breeding program in Florida, USA. The genotypes were planted in a trial with four check cultivars on organic soils with four replications, and data were collected for two years [i.e., plant cane (PC) and first ratoon (FR) crops] to assess sucrose-yield-related traits and the cane-yield-related traits in PC. Using a multivariate analysis, variation was observed in all cane—[i.e., stalk weight, stalk population and cane yield] and sugar-yield-related traits [i.e., Brix, Pol, sucrose content and commercial recoverable sucrose (CRS)]. The mean CRS content was greater in the FR crop than the PC crop. Significant variations were attributed to genotype (G), crop cycles (C) and G × C effects. Variations between crop cycles were highly significant for all sucrose yield components, which could complicate the downstream selection of genotypes for sucrose yield. Based on CRS content, genotypes could be grouped into six distinct clusters. Based on plant cane data, cane yield traits (stalk weight, stalk population and cane yield) were used to estimate the breeding values of parents. Of the 55 genotypes, 8 had significantly greater t-BLUP values for cane yield, along with CP 00-1101. Combined sucrose yield traits, (Brix, Pol and sucrose content) from the two crops were used to estimate the breeding values of parents. Of the 55 genotypes, 10 genotypes had significantly greater t-BLUP values for CRS, along with CP 00-1101, CP 96-1252 and CP 01-2390, and can be considered as elite parents in future breeding efforts. These results provide a foundation for the efficient integration of genetic diversity in developing commercial cultivars, with improved sucrose yields, into the CP sugarcane breeding program.

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Section: Variance Components For Cane-and Sucrose-yield-related Traitssupporting

confidence: 93%

Section: Variance Components For Cane-and Sucrose-yield-related Traitsmentioning

confidence: 99%

Genetic Variability and Clustering Patterns of Sugarcane (Saccharum spp.) Germplasms with Respect to Sucrose-Related Traits

Momotaz,

Coto Arbelo,

Gordon

et al. 2024

IJPB

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“…Earlier studies have also stated that temperature is a key factor for maximum enzymatic activity; SPS and SS are both optimized at 37°C ( Verma et al., 2019 ). Recently, another study on sugarcane explained that the heat stress severely affected the SPS and SS, which decreased the sucrose ( Shanthi et al., 2023 ).…”

Section: Discussionmentioning

confidence: 99%

Expression of sucrose metabolizing enzymes in different sugarcane varieties under progressive heat stress

Mehdi,

Liu,

Riaz

et al. 2023

Front. Plant Sci.

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Studying the thermal stress effect on sucrose-metabolizing enzymes in sugarcane is of great importance for understanding acclimation to thermal stress. In this study, two varieties, S2003-US-633 and SPF-238, were grown at three different temperatures ( ± 2°C): 30°C as a control, 45°C for various episodes of high temperature treatments and recovery conditions at 24, 48 and 72 hours. Data showed that reducing sugar content increased until the grand growth stage but sharply declined at the maturity stage in both cultivars. On the other hand, sucrose is enhanced only at the maturity stage. The expression of all invertase isozymes declined prominently; however, the expression of SPS was high at the maturity stage. Hence, the sucrose accumulation in mature cane was due to increased SPS activity while decreased invertase isozymes (vacuolar, cytoplasmic and cell wall) activities at maturity stage in both cultivars. Heat shock decreased the sucrose metabolizing enzymes, sucrose content and sugar recovery rate in both cultivars. In contrast, heat-shock treatments induced maximum proline, MDA, H2O2 and EC in both cultivars. Notably, this is the first report of diverse invertase isozyme molecular weight proteins, such as those with 67, 134 and 160 kDa, produced under heat stress, suggesting that these enzymes have varied activities at different developmental stages. Overall, S2003-US-633 performs better than the cultivar SPF-238 under heat stress conditions at all development stages, with increased sucrose content, enzyme expression, proline and sugar recovery rate. This work will provide a new avenue regarding sugarcane molecular breeding programs with respect to thermal stress.

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“…SuSy catalyses a reversible reaction, primarily cleaving sucrose in sink tissues (Mirajkar et al., 2016). Additionally, the activity of these enzymes is dependent on environmental conditions (Shanthi et al., 2023). For instance, acid invertase activity is reduced under low air temperature and water stress (Du and Nose, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…Despite these findings, our understanding about the enzymatic balance underlying vegetative growth and sugar accumulation in sugarcane remains limited, as well as our knowledge about how varieties differ in sucrose metabolism along crop cycle (Shanthi et al., 2023). Here, we argue that the differential sucrose yield among sugarcane genotypes is attributed to differences in carbon metabolism and related processes.…”

Section: Introductionmentioning

confidence: 99%

Physiological and biochemical processes underlying the differential sucrose yield and biomass production in sugarcane varieties

Martins,

Magalhães Filho,

Cruz

et al. 2024

Ex. Agric.

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Summary Sucrose yield in sugarcane is a complex process regulated by both environmental and endogenous factors. However, the metabolic balance driving vegetative growth and sucrose accumulation remains poorly understood. Herein, we carried out a comprehensive assessment of carbohydrate dynamics throughout the crop cycle in two sugarcane varieties varying in biomass production, evaluating the carbon metabolism in both leaves and stalks. Our data revealed that the decline in photosynthetic rates during sugarcane maturation is associated not only to accumulation of sugars in leaves but also due to stomatal and non-stomatal limitations. We found that metabolic processes in leaves and stalks were intrinsically linked. While IACSP94-2094 had higher stalk sucrose concentration than IACSP95-5000, this latter produced more biomass. Compared to IACSP95-5000, IACSP94-2094 showed higher sucrose phosphate synthase (SPS) activity in leaves and stalks, along with lower soluble acid invertase (SAI) activity in leaves during the maximum growth stage. Interestingly, IACSP94-2094 also exhibited higher stalk SPS activity and lower stalk SAI activity than IACSP95-5000 during maturation. High biomass production by IACSP95-5000 was associated with higher sucrose synthase (SuSy) and SAI activity in leaves and higher SuSy and soluble neutral invertase (SNI) activity in stalks when compared to IACSP94-2094 during the maximum growth. Despite the contrasting strategies, both varieties displayed similar total sucrose yield, a balance between sucrose concentration and biomass production. This phenomenon implies the presence of a compensatory mechanism in sugarcane, with high biomass production compensating low sucrose accumulation and vice versa.

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Impact of Climate Change on Sucrose Synthesis in Sugarcane Varieties

Cited by 9 publications

References 63 publications

Genetic Variability and Clustering Patterns of Sugarcane (Saccharum spp.) Germplasms with Respect to Sucrose-Related Traits

Genetic Variability and Clustering Patterns of Sugarcane (Saccharum spp.) Germplasms with Respect to Sucrose-Related Traits

Expression of sucrose metabolizing enzymes in different sugarcane varieties under progressive heat stress

Physiological and biochemical processes underlying the differential sucrose yield and biomass production in sugarcane varieties

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