Photosynthesis, antioxidant activities and transcriptional responses in two sugarcane (Saccharum officinarum L.) cultivars under salt stress

Medeiros, Camila Dias; Neto, José Ribamar Costa Ferreira; Oliveira, Marciel T.; Rivas, Rebeca; Pandolfi, Valesca; Kido, Ederson Akio; Baldani, José Ivo; Santos, Mariana

doi:10.1007/s11738-013-1425-4

Cited by 23 publications

(16 citation statements)

References 57 publications

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“…Our study demonstrated that enzyme activities and the expression of antioxidant enzyme genes play important roles in the heat tolerance of plants. A previous study showed that both the activity and relative expression levels of antioxidant enzymes did not occur concurrently [30], and that no protection from stress was conferred by such enzymes [31]. Our results proved that the relationship between antioxidant enzyme activities and their correspondent gene expressions might be a positive correlation.…”

Section: Discussionsupporting

confidence: 71%

Effects of Heat Acclimation on Photosynthesis, Antioxidant Enzyme Activities, and Gene Expression in Orchardgrass under Heat Stress

et al. 2014

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Abstract:The present study was designed to examine the effects of heat acclimation on enzymatic activity, transcription levels, the photosynthesis processes associated with thermostability in orchardgrass (Dactylis glomerata L.).The stomatal conductance (Gs), net photosynthetic rate (Pn), and transpiration rates (Tr) of both heat-acclimated (HA) and non-acclimated (NA) plants were drastically reduced during heat treatment [using a 5-day heat stress treatment (38/30 °C -day/night) followed by a 3-day recovery under control conditions (25/20 °C -day/night), in order to consolidate the second cycle was permitted]. Water use efficiency increased more steeply in the HA (4.9 times) versus the NA (1.8 times) plants, and the intercellular CO 2 concentration decreased gently in NA (10.9%) and HA (25.3%) plants after 20 d of treatments compared to 0 days'. Furthermore, heat-acclimated plants were able to maintain significant activity levels of superoxide disumutase (SOD), catalase (CAT), guaiacol peroxidase (POD), and transcription levels of genes encoding these enzymes; in addition, HA plants displayed lower malondialdehyde content and lower electrolyte leakage than NA plants. These results suggest that maintenance of activity and transcription levels of antioxidant enzymes as well as photosynthesis are associated with variable thermostability in HA and NA plants. This likely occurs through cellular membrane stabilization and improvements in water use efficiency in the photosynthetic process during heat stress. The association between antioxidant enzyme activity and gene OPEN ACCESSMolecules 2014, 19 13565 expression, both of which may vary with genetic variation in heat tolerance, is important to further understand the molecular mechanisms that contribute to heat tolerance.

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Section: Discussionsupporting

confidence: 71%

Effects of Heat Acclimation on Photosynthesis, Antioxidant Enzyme Activities, and Gene Expression in Orchardgrass under Heat Stress

et al. 2014

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“…About one-third of all irrigated land as fertile soils become salinized due to poor irrigation management [4,5], which affects the vegetative growth and yield of crops [6]. Sugarcane is a glycophyte with moderate sensitivity towards salinity which is grown in the tropical and subtropical regions in clay soil [7]. Clay soil has the ability to accumulate a higher salt deposition when compared to other soils [8].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of glyoxalase pathway genes in Erianthus arundinaceus and commercial sugarcane hybrid under salinity and drought conditions

et al. 2019

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Background: Glyoxalase pathway is a reactive carbonyl species (RCS) scavenging mechanism involved in the detoxification of methylglyoxal (MG), which is a reactive α-ketoaldehyde. In plants under abiotic stress, the cellular toxicity is reduced through glyoxalase pathway genes, i.e. Glyoxalase I (Gly I), Glyoxalase II (Gly II) and Glyoxalase III (Gly III). Salinity and water deficit stresses produce higher amounts of endogenous MG resulting in severe tissue damage. Thus, characterizing glyoxalase pathway genes that govern the MG metabolism should provide new insights on abiotic stress tolerance in Erianthus arundinaceus, a wild relative of sugarcane and commercial sugarcane hybrid (Co 86032).

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“…Differential gene expression for water stress in tolerant and sensitive sugarcane cultivars has been reported [10][11][12], as have been reports of hormonal response for sugarcane ripening using microarrays [13]. Genes and proteins, differentially expressed under salt stress, and detected by RT-qPCR, two-dimensional gel electrophoresis and mass spectrometry have also been reported for sugarcane [14,15].…”

Section: Introductionmentioning

confidence: 82%

Molecular Mechanisms Underlying Sugarcane Response to Aluminum Stress by RNA-Seq

Rosa-Santos¹,

Silva²,

Kumar³

et al. 2020

Preprint

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Sugarcane is an important sugar-source crop. As any other plant, it can be exposed to several abiotic stress conditions. Though some metals contribute to critical physiological processes in plants, the presence of aluminum ions (Al3+) can be very toxic. In order to develop plants that flourish in acidic soils, it is critical to gain insights into the molecular mechanisms of sugarcane response to aluminum stress. To determine the genes involved in sugarcane response to aluminum stress we generated 372 million paired-end RNA sequencing reads, from roots of CTC-2 and RB855453 two contrasting cultivars. Data normalization resulted in 162,161 contigs and 97,335 trinity genes. After the read cutoff, the differentially expressed genes were 4,858 in CTC-2 and 1,307 in the RB855453, Treatment Vs Control, respectively. The differentially expressed genes were annotated into 34 functional categories. The majority of the genes were upregulated in the CTC-2 (tolerant cultivar) and down regulated in RB855453 (sensitive cultivar). Here, we present the first root-transcriptome of sugarcane under aluminum stress. The results and conclusions of this study provide a valuable resource for future genetic and genomic studies in sugarcane. This transcriptome analysis points out that sugarcane tolerance to aluminum may be explained by an efficient detoxification mechanism combined with the lateral root formation and activation of redox enzymes. Following our results, we present here, a hypothetical model for the aluminum tolerance in CTC-2 cultivar.

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Photosynthesis, antioxidant activities and transcriptional responses in two sugarcane (Saccharum officinarum L.) cultivars under salt stress

Cited by 23 publications

References 57 publications

Effects of Heat Acclimation on Photosynthesis, Antioxidant Enzyme Activities, and Gene Expression in Orchardgrass under Heat Stress

Effects of Heat Acclimation on Photosynthesis, Antioxidant Enzyme Activities, and Gene Expression in Orchardgrass under Heat Stress

Comparative analysis of glyoxalase pathway genes in Erianthus arundinaceus and commercial sugarcane hybrid under salinity and drought conditions

Molecular Mechanisms Underlying Sugarcane Response to Aluminum Stress by RNA-Seq

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