Cell membrane stability and leaf water relations as affected by phosphorus nutrition under water stress in maize

Premachandra, Gnanasiri S.; Saneoka, Hirohumi; Fujita, Kazuo; Ogata, Shoitsu

doi:10.1080/00380768.1990.10416803

Cited by 28 publications

(15 citation statements)

References 12 publications

(14 reference statements)

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“…From the results for different water relation parameters, it is obvious that leaf turgor and relative water contents were significantly improved in the salt-stressed plants due to foliar applied K 2 SO 4 . These results can be related to the findings of some earlier studies in which it was observed that increase in leaf K due to supplemental K caused maintenance of leaf turgor and RWC under water stress conditions, e.g., in sorghum (Jones et al, 1980), wheat (Pier and Berkowitz, 1987), maize (Premachandra et al, 1990), and Vigna radiata (Nandwal et al, 1998).…”

Section: Article In Presssupporting

confidence: 77%

Effectiveness of potassium sulfate in mitigating salt-induced adverse effects on different physio-biochemical attributes in sunflower (Helianthus annuus L.)

Akram

Ashraf

Akram

2009

Flora - Morphology, Distribution, Functional Ecology of Plants

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Section: Article In Presssupporting

confidence: 77%

Effectiveness of potassium sulfate in mitigating salt-induced adverse effects on different physio-biochemical attributes in sunflower (Helianthus annuus L.)

Akram

Ashraf

Akram

2009

Flora - Morphology, Distribution, Functional Ecology of Plants

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“…Level of salt-induced effects on relative water content has been used as one of the imperative water relation attributes for assessing degree of salt tolerance in maize (Premachandra et al 1990), Vigna radiata (Nandwal et al 1998) and pea (Noreen and Ashraf 2009). In the present study, salinity caused significant reduction in RWC in both maize hybrids at all growth stages.…”

Section: Discussionmentioning

confidence: 99%

Potassium application mitigates salt stress differentially at different growth stages in tolerant and sensitive maize hybrids

et al. 2015

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A pot experiment was conducted to investigate the role of potassium (K) in extenuating the injurious effect of salt stress on maize hybrids differing in salt tolerance at different growth stages. One salt-sensitive viz. 8441 and one salt-tolerant viz. 26,204 maize hybrids were sown in pots having 12 kg soil. The recommended dose of nitrogen and phosphorus @ 200 and 150 kg ha -1 with different rate of potassium (75, 150 and 300 kg ha -1 ) and salinity level (10 dS m -1 ) was developed in soil before filling the pots. Salinity stress reduced plant growth by affecting plant morphological characteristics, reducing relative water contents and membrane stability index, decreasing photosynthetic activities, altering K ? /Na ? ratios and antioxidant activities of both maize hybrids at all three growth stages. However, results also depicts that maximum relative water contents, membrane stability index, gas exchange attributes, photosynthetic pigments, antioxidant enzymes activities and proline contents was observed at reproductive growth stage as compared to vegetative and grain development growth stages in both hybrids. The inhibitory effect of salt stress was more pronounced on maize hybrid 8441 than 26,204. But, addition of potassium significantly alleviates harmful effect of salinity by improving the plant growth, gas exchange parameters, enhancing K ? /Na ? ratios and antioxidant activities of both maize hybrids. Potassium application (300 kg K ha -1 ) was found more effective in alleviating perilous effect of salinity as compared to other two levels. Salt tolerant maize hybrid (26,204) produced more biomass, less shoot Na ? concentration, high K ? concentration, exhibited more chlorophyll contents, gas exchange parameters and antioxidant enzymes activities under salt stress condition at all growth stages as compared to salt sensitive maize hybrids (8441). These results suggested that potassium application counteracted the unfavorable effects of salinity on growth of maize by civilizing photosynthetic capacity of maize plants against salinity-induced oxidative stress and maintaining ion homeostasis, however, these alleviating effects were cultivar specific.

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“…A majority of studies have indicated that plants decrease P uptake as soil moisture declines 13 , 14 . Drought can hinder P uptake by decreasing P distribution to roots, and other factors related with water relations in the affected plant 15 , 16 . Phosphate fertilizer is commonly applied to reduce the P deficiency in soil and to increase the drought-tolerating ability of plants.…”

Section: Introductionmentioning

confidence: 99%

Phosphorous fertilization alleviates drought effects on Alnus cremastogyne by regulating its antioxidant and osmotic potential

Tariq

Pan

Olatunji

et al. 2018

Sci Rep

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Alnus cremastogyne, a broad-leaved tree endemic to south-western China, has both commercial and restoration importance. However, little is known of its morphological, physiological and biochemical responses to drought and phosphorous (P) application. A randomized experimental design was used to investigate how drought affected A. cremastogyne seedlings, and the role that P applications play in these responses. Drought had significant negative effects on A. cremastogyne growth and metabolism, as revealed by reduced biomass (leaf, shoot and root), leaf area, stem diameter, plant height, photosynthetic rate, leaf relative water content, and photosynthetic pigments, and a weakened antioxidative defence mechanism and high lipid peroxidation level. However, the reduced leaf area and enhanced osmolyte (proline and soluble sugars) accumulation suggests drought avoidance and tolerance strategies in this tree. Applying P significantly improved the leaf relative water content and photosynthetic rate of drought-stressed seedlings, which may reflect increased anti-oxidative enzyme (superoxide dismutase, catalase and peroxidase) activities, osmolyte accumulation, soluble proteins, and decreased lipid peroxidation levels. However, P had only a slight or negligible effect on the well-watered plants. A. cremastogyne is sensitive to drought stress, but P facilitates and improves its metabolism primarily via biochemical and physiological rather than morphological adjustments, regardless of water availability.

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Cell membrane stability and leaf water relations as affected by phosphorus nutrition under water stress in maize

Cited by 28 publications

References 12 publications

Effectiveness of potassium sulfate in mitigating salt-induced adverse effects on different physio-biochemical attributes in sunflower (Helianthus annuus L.)

Effectiveness of potassium sulfate in mitigating salt-induced adverse effects on different physio-biochemical attributes in sunflower (Helianthus annuus L.)

Potassium application mitigates salt stress differentially at different growth stages in tolerant and sensitive maize hybrids

Phosphorous fertilization alleviates drought effects on Alnus cremastogyne by regulating its antioxidant and osmotic potential

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