Plant regulators and invertase activity in sugarcane at the beginning of the harvest season

Leite, Glauber Henrique Pereira; Alexandre, Carlos; Crusciol, Carlos Alexandre Costa; Siqueira, Gabriela Ferraz de; Silva, Marcelo de Almeida

doi:10.1590/0103-8478cr20141363

Cited by 8 publications

(2 citation statements)

References 12 publications

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“…The procedure for protein concentration detection [ 88 ] was followed. For CWI, SAI, and neutral invertase (NI) activities, measure and analysis of the procedure described by [ 89 , 90 ] were used per requirement. The activity of CWI, SAI, and NI was measured in a reaction mixture with a final volume of 120 μL.…”

Section: Methodsmentioning

confidence: 99%

Comparative Analysis of Sucrose-Regulatory Genes in High- and Low-Sucrose Sister Clones of Sugarcane

Khan,

Qin,

Guo

et al. 2024

Plants

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Sugarcane is a significant primitive source of sugar and energy worldwide. The progress in enhancing the sugar content in sugarcane cultivars remains limited due to an insufficient understanding of specific genes related to sucrose production. The present investigation examined the enzyme activities, levels of reducing and non-reducing sugars, and transcript expression using RT-qPCR to assess the gene expression associated with sucrose metabolism in a high-sucrose sugarcane clone (GXB9) in comparison to a low-sucrose sister clone (B9). Sucrose phosphate synthase (SPS), sucrose phosphate phosphatase (SPP), sucrose synthase (SuSy), cell wall invertase (CWI), soluble acid invertase (SAI), and neutral invertase (NI) are essential enzymes involved in sucrose metabolism in sugarcane. The activities of these enzymes were comparatively quantified and analyzed in immature and maturing internodes of the high- and low-sucrose clones. The results showed that the higher-sucrose-accumulating clone had greater sucrose concentrations than the low-sucrose-accumulating clone; however, maturing internodes had higher sucrose levels than immature internodes in both clones. Hexose concentrations were higher in immature internodes than in maturing internodes for both clones. The SPS and SPP enzymes activities were higher in the high-sucrose-storing clone than in the low-sucrose clone. SuSy activity was higher in the low-sucrose clone than in the high-sucrose clone; further, the degree of SuSy activity was higher in immature internodes than in maturing internodes for both clones. The SPS gene expression was considerably higher in mature internodes of the high-sucrose clones than the low-sucrose clone. Conversely, the SuSy gene exhibited up-regulated expression in the low-sucrose clone. The enhanced expression of SPS in the high-sucrose clone compared to the low-sucrose clone suggests that SPS plays a major role in the increased accumulation of sucrose. These findings provide the opportunity to improve sugarcane cultivars by regulating the activity of genes related to sucrose metabolism using transgenic techniques.

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Section: Methodsmentioning

confidence: 99%

Comparative Analysis of Sucrose-Regulatory Genes in High- and Low-Sucrose Sister Clones of Sugarcane

Khan,

Qin,

Guo

et al. 2024

Plants

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“…As the doses increased, there was a reduction in the grain mass. According to Leite et al (2009), the agronomic efficiency of bioregulators or biostimulants is significantly affected by the dosage, since excessive amounts can cause toxic effect on the plant and low utilization of plant hormones. Table 2: Minimum significant difference (DMS -Tukey 5%), coefficient of variation (CV) and mean values of total pod production (TPP), mass of 100 grains and production (g plant -1 ), for soybean cultivar Monsoy 8766 as a function of the application of doses of Stimulate ® with and without the application of Georaiz ® Leg.…”

Section: Stimulate ®mentioning

confidence: 99%

Use of biostimulants in the development and productivity of soybean

2019

Aust. J. Basic & Appl. Sci

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Recent studies point to a great potential in the use of biostimulants, which are important for increasing plant biomass, crop yield and resistance to multiple types of stress (Calvo et al., 2014; Nardi et al., 2016; Souza Neta et al., 2016). By using these substances in crops, it is possible to contribute to nutrition and help minimize water stress, contributing to maximum yield ceiling (Castro and Vieira, 2006). Santos and Vieira (2005), using doses of cytokinin, indole butyric acid and

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Phytotonic effects of thiamethoxam on sugarcane managed with glyphosate as a ripener

Silva

Oliveira

et al. 2022

Pest Management Science

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BACKGROUND Thiamethoxam and glyphosate are widely used in sugarcane production as an insecticide and ripener, respectively. In this study, the potential of these chemical products to also elicit phytotonic effects and enhance the physiological development and yield of sugarcane was evaluated. In field experiments, thiamethoxam and glyphosate were applied to sugarcane individually or in combination, and the effects of these chemical management strategies on sugarcane biometric and technological parameters were assessed. RESULTS Thiamethoxam application improved biometric parameters, especially stalk yield. Glyphosate application increased sugar yield, despite reducing the number of stalks and consequently the stalk yield. CONCLUSIONS Application of the insecticide thiamethoxam to sugarcane attenuates the depreciative effect of ripener (glyphosate) and has a potential phytotonic effect by increasing sugar yields in the early and late seasons. © 2022 Society of Chemical Industry.

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Plant regulators and invertase activity in sugarcane at the beginning of the harvest season

Abstract: Invertases play an essential role in partitioning photosynthates between storage and growth. The objective of this study was to evaluate the activity of acid and neutral invertases and the role they play in controlling the

Cited by 8 publications

References 12 publications

Comparative Analysis of Sucrose-Regulatory Genes in High- and Low-Sucrose Sister Clones of Sugarcane

Comparative Analysis of Sucrose-Regulatory Genes in High- and Low-Sucrose Sister Clones of Sugarcane

Use of biostimulants in the development and productivity of soybean

Phytotonic effects of thiamethoxam on sugarcane managed with glyphosate as a ripener

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