Leaf Cell‐Wall Components as Influenced in the First Phase of Salt Stress in Three Maize (<i>Zea mays</i> L.) Hybrids Differing in Salt Resistance

Uddin, Nesar; Hanstein, Stefan; Leubner, R.; Schubert, Sven

doi:10.1111/jac.12031

Cited by 43 publications

(36 citation statements)

References 50 publications

(70 reference statements)

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“…2,3b,c), and also of bands assigned to cellulose. A similar reduction in cellulose content promoted by saline conditions has been previously reported in tobacco cells adapted to grow in 0.428 M NaCl, in which the proportion of cellulose was only 50 % that of unadapted cells (Iraki et al 1989), as well as in cell walls of cotton seedlings (Zhong and Läuchli 1993) and maize leaves (Uddin et al 2013) under saline stress. The change of trend in the cellulose content observed when calluses are subjected to concentrations of NaCl well below the I 50 (in this case, 50 mM, whereas the I 50 is 160 mM) might be attributed to a subtoxic effect promoted by the saline conditions.…”

Section: Assay Of the Cellulose Contentsupporting

confidence: 83%

“…This is correlated to the more intense labeling with JIM7 observed in 200 mM NaCl-treated calluses, but it is not necessary an objection to the observed intense labeling with JIM5 in the same calluses. In fact, cellulose-impoverished cell walls as those of tomato dichlobenil-habituated are characterized by a general increment of pectic polysaccharides (both esterified and non-esterified) (Wells et al 1994), and those of different maize hybrids subjected to salt stress (Uddin et al 2013). …”

Section: Immunolocation Of Cell Wall Proteins and Pectinsmentioning

confidence: 99%

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Monitoring of cell wall modifications during callogenesis in Stylosanthes guianensis (Fabaceae) under salt stress conditions

et al. 2015

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Callogenesis was induced from Stylosanthes guianensis (Aubl.) Sw. cv. CIAT-184 hypocotyl explants cultured in the presence of different concentrations of NaCl. Whereas calluses formed at 50 mM NaCl did not show significant changes, concentrations in the range of 100-250 mM NaCl influenced callus formation and survival. The concentrations which reduced the callus formation and survival by 50 % with respect to the controls (I 50 ) were 190 and 225 mM NaCl, respectively. Callus growth was also affected being 160 mM NaCl the concentration that reduced the fresh weight gain in 50 %, in comparison to the control. The cell walls of calluses formed at higher NaCl concentrations showed a lower cellulose content, which was accompanied by an increase in protein, phenolics, and esters, as revealed by Fourier transform infrared spectroscopy. These overall cell wall modifications were accompanied by the formation of cell wall appositions enriched with homogalacturonan and rhamnogalacturonan components, and also with an increase of arabinogalactan proteins in cell walls. These results evidence the ability of cells to adjust the cell wall composition under salt stress conditions, as part of the strategy to sustain their growth in such environment.

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Section: Assay Of the Cellulose Contentsupporting

confidence: 83%

Section: Immunolocation Of Cell Wall Proteins and Pectinsmentioning

confidence: 99%

Monitoring of cell wall modifications during callogenesis in Stylosanthes guianensis (Fabaceae) under salt stress conditions

et al. 2015

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“…Expansins, wall-loosening enzymes located within the apoplast of the elongation zone of leaves (Cosgrove 2000), regulate cell elongation. Their function is acid dependent and may contribute to cell wall loosening below pH 5 (Cosgrove 2000;Uddin et al 2013). Pitann et al (2009a) observed a reduction in the β-expansin protein in a salt-sensitive maize hybrid exposed to salt stress, while the salt-resistant hybrid was less affected.…”

Section: Germination and Plant Growthmentioning

confidence: 99%

“…For example, six isoforms of expansins were investigated in a resistant and a tolerant maize cultivar which differed in upregulation or downregulation (Geilfus et al 2010). The alteration/adaptation in cell wall chemical composition may also contribute to salt resistance in maize, as a low accumulation of non-methylated uronic acid in leaf cell walls may contribute to salt resistance in the first phase of salt stress (Uddin et al 2013).…”

Section: Molecular Mechanismsmentioning

confidence: 99%

Salt stress in maize: effects, resistance mechanisms, and management. A review

Farooq

Hussain

Wakeel

et al. 2015

Agron. Sustain. Dev.

587

383

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Maize is grown under a wide spectrum of soil and climatic conditions. Maize is moderately sensitive to salt stress; therefore, soil salinity is a serious threat to its production worldwide. Understanding maize response to salt stress and resistance mechanisms and overviewing management options may help to devise strategies for improved maize performance in saline environments. Here, we reviewed the effects, resistance mechanisms, and management of salt stress in maize. Our main conclusions are as follows: (1) germination and stand establishment are more sensitive to salt stress than later developmental stages. (2) High rhizosphere sodium and chloride decrease plant uptake of nitrogen, potassium, calcium, magnesium, and iron. (3) Reduced grain weight and number are responsible for low grain yield in maize under salt stress. Sink limitations and reduced acid invertase activity in developing grains is responsible for poor kernel setting under salt stress. (4) Exclusion of excessive sodium or its compartmentation into vacuoles is an important adaptive strategy for maize under salt stress. (5) Apoplastic acidification, required for cell wall extensibility, is an important indicator of salt resistance, but not essential for better maize growth under salt stress. (6) Upregulation of antioxidant defense genes and β-expansin proteins is important for salt resistance in maize. (7) Arbuscular mycorrhizal fungi improve salt resistance in maize due to better plant nutrient availability. (8) Seed priming is an effective approach for improving maize germination under salt stress. (9) Integration of screening, breeding and ion homeostasis mechanisms into a functional paradigm for the whole plant may help to enhance salt resistance in maize.

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“…Thus it appeared that BARI Maize 5 and BARI Maize 7 performed relatively better under salt stress compared to Mosaic maize line and Plain maize line. Several investigations have shown that salt stress imposed by NaCl causes a persistent decrease of the elongation rate of maize leaves (Chazen et al, 1995;Neumann, 1993), thereby reducing shoot growth (Uddin et al, 2014;Uddin et al, 2013;Hatzig et al, 2010). Salt stress (10 dS m -1 ) significantly (P ≤ 5.0%) increased shoot Na + content both in young and old shoot of the four maize genotypes (Fig.…”

Section: Resultsmentioning

confidence: 86%

Sodium exclusion by different maize genotypes under salinity in conferring salt resistance

Khanoom¹,

Mojumder²,

Uddin

et al. 2017

Asian J. Med. Biol. Res

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An experiment was carried out in the pot-house of botanical garden of Bangladesh Agricultural University (BAU), Mymensingh, during June to November, 2014 to investigate the effect of NaCl on growth, Na + accumulation and K + : Na + ratio in maize. Four maize genotypes namely BARI Maize 5, BARI Maize 7, Plain maize line and Mosaic maize line were tested against control, without providing any NaCl and salt stress, with NaCl to reach the soil salinity of 10 dS m -1 . The experiment was laid out following CRD with four replicates. Under salt stress, relative reduction in shoot fresh masses were 22 and 77% in BARI Maize 5 and BARI Maize 7, whereas the magnitude of reduction was 136 and 155% in Mosaic maize line and Plain maize line, respectively. Seven days exposure to moderate salinity (10 dS m -1 ) seemed to have significantly reduced total fresh masses with the concomitant increase in Na + concentrations but decrease in K + concentrations and K + : Na + ratios in both young and old shoots of BARI Maize 5, Plain maize line and Mosaic maize line. In contrast, BARI Maize 7 showed significant reduction in shoot fresh mass under salinity with the concomitant increase in shoot Na + content but no significant changes in K + concentrations and K + : Na + ratios were observed under salinity. It seemed that young leaf of BARI maize 7 showed unaffected growth despite of higher accumulation of Na + . It may likely that BARI maize 7 sequestered incoming excess Na + ions in the vacuole from the cytosol to combat deleterious effect of this ion to the cytoplasmic enzymes.

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Leaf Cell‐Wall Components as Influenced in the First Phase of Salt Stress in Three Maize (Zea mays L.) Hybrids Differing in Salt Resistance

Cited by 43 publications

References 50 publications

Monitoring of cell wall modifications during callogenesis in Stylosanthes guianensis (Fabaceae) under salt stress conditions

Monitoring of cell wall modifications during callogenesis in Stylosanthes guianensis (Fabaceae) under salt stress conditions

Salt stress in maize: effects, resistance mechanisms, and management. A review

Sodium exclusion by different maize genotypes under salinity in conferring salt resistance

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