Molecular regulation of starch accumulation in rice seedling leaves in response to salt stress

Chen, Huai-Ju; Chen, Jiayi; Wang, Shu‐Jen

doi:10.1007/s11738-007-0101-y

Cited by 74 publications

(48 citation statements)

References 41 publications

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“…Also, the activity of GBSS decreased significantly, leading to low starch content in seedlings exposed to 200 mM NaCl. In contrast, the activities of ADP-glucose pyrophosphorylase (AGPase), soluble starch synthase (SS) and starch branching enzyme (SBE) in starch biosynthesis were unchanged in plants subjected to salt stress (Chen et al 2008). In the present study, the differential display of starch metabolism regulated genes, in both Pokkali, salttolerant and IR29, salt-susceptible, was demonstrated.…”

Section: Expression Levels Of Starch Involving Genes Under Salt Stressmentioning

confidence: 49%

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Transcriptional regulations of the genes of starch metabolism and physiological changes in response to salt stress rice (Oryza sativa L.) seedlings

Theerawitaya

Boriboonkaset

Cha–um

et al. 2012

Physiol Mol Biol Plants

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The aim of this investigation was to compare the transcriptional expression of starch metabolism, involving genes and physiological characters, in seedlings of two contrasting salt-tolerant rice genotypes, in response to saltstress. The soluble sugar content in rice seedlings of both salt-tolerant and salt-sensitive genotypes was enriched, relating to starch degradation, in plants subjected to 200 mM NaCl. In the salt-tolerant cultivar Pokkali, a major source of carbon may be that derived from the photosynthetic system and starch degradation. In starch degradation, only Pho and PWD genes in Pokkali were upregulated in plants subjected to salt stress. In contrast, the photosynthetic abilities of IR29 salt-susceptible cultivar dropped significantly, relating to growth reduction. The major source of carbohydrate in salt-stressed seedlings of the IR29 cultivar may be gained from starch metabolism, regulated by ADP-glucose pyrophosphorylase (AGP), starch synthase (SS), starch branching enzyme (SBE), starch debranching enzyme (ISA), glucan-water dikinase (GWD), dispropotionating enzyme (DPE), phospho glucan-water dikinase (PWD) and starch phosphorylase (Pho). Also, the major route of soluble sugar in salt-stressed Pokkali seedlings was derived from photosynthesis and starch metabolism. This was identified as novel information in the present study.

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Section: Expression Levels Of Starch Involving Genes Under Salt Stressmentioning

confidence: 49%

“…Carbohydrate is a candidate target of the salt defence mechanism and is controlled by the osmoticum in plant cells subjected to salt stress (Djanaguiraman et al 2006;Chen et al 2008;Rosa et al 2009). Starch is the principle carbon reserve for energy preservation in higher plants.…”

Section: Introductionmentioning

confidence: 99%

Transcriptional regulations of the genes of starch metabolism and physiological changes in response to salt stress rice (Oryza sativa L.) seedlings

Theerawitaya

Boriboonkaset

Cha–um

et al. 2012

Physiol Mol Biol Plants

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“…On the other hand, although NaCl-induced OsMCSU expression was not observed in leaves of 24-h NaCl-treated seedlings (Fig. 3b), we previously observed an increase of ABA in leaf tissues of salt-stressed seedlings (Chen et al 2007). Fig.…”

Section: Analysis Of the Cdna Of Osmcsumentioning

confidence: 60%

Tissue-specific regulation of rice molybdenum cofactor sulfurase gene in response to salt stress and ABA

2009

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Molybdenum-containing aldehyde oxidase is a key enzyme for catalyzing the final step of abscisic acid (ABA) biosynthesis in plants. Sulfuration of the molybdenum cofactor (MoCo) is an essential step for activating aldehyde oxidase. The molybdenum cofactor sulfurase (MCSU) that transfers the sulfur ligand to aldehyde oxidase-bound MoCo is thus considered an important factor in regulating the ABA levels in plant tissues. In this study, we identified the rice MCSU cDNA (OsMCSU), which is the first MCSU gene cloned in monocot species. According to the functional domain analysis of the predicted amino acid sequence, the OsMCSU protein contains a Nifs domain at its N-terminus and a MOSC domain at the C-terminus. Expression of the OsMCSU gene was up-regulated by salt stress in root tissues of rice seedlings, but this effect was not observed in leaf tissues. In roots, regulations of OsMCSU expressions could be mediated by both ABAdependent and ABA-independent signaling pathways under salt stress condition.

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“…The severe impact of high salinity is manifested as ionic toxicity, nutrient deficiency, oxidative stress, inhibited cell division, and metabolism (Munns 2002;Zhu 2001) and eventually affects plant survival, growth, and development. When plant roots undergoes the salinity stress, it affects photosynthesis, respiration, nitrogen fixation, protein synthesis, and lipid metabolism (Parida and Das 2005;Chen et al 2008;Gupta and Huang 2014). The leaf pigments, including chlorophyll a, b, total chlorophyll, and carotenoids content, significantly decreased with the increased salt stress (Fig.…”

Section: Discussionmentioning

confidence: 99%

Biochemical and molecular changes induced by salinity stress in Oryza sativa L.

Khan

Hemalatha

2016

Acta Physiol Plant

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Salinity stress constrains the growth, development, and yield in crops. Rice is an important cereal crop highly affected by salinity. To ensure the agriculture production in salt-affected soils, it is enormously entail to understand the salt adaptation strategies of plants. Salinity directly affects the morphology, physiology, and metabolism of the plants. The current study was carried out to check the influence of different concentrations of sodium chloride on rice cultivar. Higher concentration of the NaCl showed significant reduction in the growth, pigment system, and metabolites in rice cultivars. Salinity also elicited the antioxidant enzymes (CAT, SOD, and POX) response and gene expression. Cell biological studies showed the H 2 O 2 production and nuclear fragmentation due to alleviated salinity stress. To delineate the portrayal of antioxidant proteins and autophagy mechanism in salinity stress, the homologs of rice CAT1, Mn-SOD, GPX, ATG1, and ATG6 genes were retrieved from blast search. The realtime PCR analysis showed differential expression of genes and depicts new molecular insight of target genes to understand the salinity stress and autophagy-mediated stress signaling pathways.

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Molecular regulation of starch accumulation in rice seedling leaves in response to salt stress

Cited by 74 publications

References 41 publications

Transcriptional regulations of the genes of starch metabolism and physiological changes in response to salt stress rice (Oryza sativa L.) seedlings

Transcriptional regulations of the genes of starch metabolism and physiological changes in response to salt stress rice (Oryza sativa L.) seedlings

Tissue-specific regulation of rice molybdenum cofactor sulfurase gene in response to salt stress and ABA

Biochemical and molecular changes induced by salinity stress in Oryza sativa L.

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