Impact of Seawater Salinity on Ultrastructure of Chloroplasts and Oleosomes in Relation to Fat Metabolism in Flag Leaf of Two Wheat Cultivars During Grain-filling

Aldesuquy, H. S.

doi:10.4172/2329-8863.1000200

Cited by 2 publications

(2 citation statements)

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“…The simulative effect of seawater on pigments content of wheat flag leaf particularly the carotenoids might be due the fact that salinity led to an increase in the number of chloroplast mesophyll cells. These results are in accordance with the results of Chavan and Karadge [29] on wheat [12], on Vicia faba [6] and on wheat [30]. The meditative effect of GA3, IAA or ABA on pigment formation as well as Hill activity in flag leaf of wheat plants irrigated by seawater may explain the fact that these hormones may retard the senescence of flag leaf and this advantage will keep it green for a prolonged time.…”

Section: Discussionsupporting

confidence: 90%

“…Hawing and Chen [17] added that ionic additives such as NaCI and KCI caused significant swelling of thylakoid membranes in chloroplasts of Kandelia candel. Furthermore, Aldesuquy [30] found that irrigation of wheat plants with 25% seawater induced dramatic changes in chloroplasts and oleosomes particularly after 21 days post-anthesis. They revealed that there were slight differences between two wheat cultivars in response to seawater at 10% and 14 days postanthesis in terms of chloroplast ultrastructure.…”

Section: Discussionmentioning

confidence: 99%

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Synergistic effect of phytohormones on pigment and fine structure of chloroplasts in flag leaf of wheat plants irrigated by seawater

Aldesuquy

2015

Egyptian Journal of Basic and Applied Sciences

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Plant hormones play vital roles in the ability of plants to acclimatize to varying environments by mediating growth, development and nutrient allocation. The present investigation was undertaken to have some information about interactive effects of seawater salinity and some plant growth regulators (gibberellic acid, indole acetic acid or abscisic acid) on leaf area, pigment and chloroplast ultrastructure as well as saccharides and protein content of wheat flag leaf. In the majority of cases, seawater at 10 or 25% increased pigment content, particularly carotenoids. On the other hand seawater reduced leaf lamina area, Hill activity and sucrose as well as polysaccharides and protein. The interactive effect of seawater and growth regulators accelerated the production of Chl a, Chl b and carotenoids by increasing the values of these pigment. Furthermore, grain pretreatment with gibberellic acid, indole acetic acid or abscisic acid induced marked increase in leaf lamina area, Hill activity and sucrose as well as polysaccharides and protein. Irrigation of wheat plants by seawater at 10 or 25% caused dramatic changes in chloroplast ultrastructure of flag leaf. These changes include disorganized membrane system, disruption of bounding membrane, reduction in the size and number of starch grains and an increase in plastoglobuli. The presoaking of

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Synergistic effect of phytohormones on pigment and fine structure of chloroplasts in flag leaf of wheat plants irrigated by seawater

Aldesuquy

2015

Egyptian Journal of Basic and Applied Sciences

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Unexpected Effects of Sulfate and Sodium Chloride Application on Yield Qualitative Characteristics and Symmetry Indicators of Hard and Soft Wheat Kernels

Aniskina

Баранова

Лебедев

et al. 2023

Plants

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The heterogeneity of grain quality can lead to limited predictability of qualitative and quantitative characteristics of the wheat yield, especially with an increase in the importance of drought and salinity caused by climate change. This study was undertaken with the aim of creating basic tools for phenotyping and assessing the sensitivity of genotypes to salt effects at the level of some wheat kernel attributes. The study considers 36 variants of the experiment, including four wheat cultivars—Zolotaya, Ulyanovskaya 105, Orenburgskaya 10, Orenburgskaya 23; three treatment variants—control (without salt) and two salts exposure (NaCl at a concentration of 1.1 g L−1 and Na2SO4 at a concentration of 0.4 g L−1); as well as three options for the arrangement of kernels in a simple spikelet—left, middle, and right. It has been established that the salt exposure had a positive effect on the percentage of kernel fulfilling in the cultivars Zolotaya, Ulyanovskaya 105, and Orenburgskaya 23 compared to control. The kernels of the Orenburgskaya 10 variety matured better in the experiment with Na2SO4 exposure, while the control variant and NaCl gave the same effect. When exposed to NaCl, significantly greater values of weight, transverse section area, and transverse section perimeter of the kernel were noted in the cv Zolotaya and Ulyanovskaya 105. Cv Orenburgskaya 10 responded positively to the use of Na2SO4. This salt caused an increase in the area, length, and width of the kernel. The fluctuating asymmetry of the left, middle, and right kernels in the spikelet was calculated. In the cv Orenburgskaya 23 the salts affected only the kernel perimeter among parameters examined. The indicators of the general (fluctuating) asymmetry were lower in the experiments with the use of salts, i.e., kernels were more symmetrical than in the control variant, both for the cultivar as a whole and when compared taking into account the kernel location in spikelet. However, this result was unexpected, since salt stress inhibited a number of morphological parameters: the number and average length of embryonic, adventitious, and nodal roots, flag leaf area, plant height, dry biomass accumulation, and plant productivity indicators. The study showed that low concentrations of salts can positively affect the fulfilling of kernels (the absence of a cavity inside the kernel) and the symmetry of the left and right sides of the kernel.

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Impact of Seawater Salinity on Ultrastructure of Chloroplasts and Oleosomes in Relation to Fat Metabolism in Flag Leaf of Two Wheat Cultivars During Grain-filling

Cited by 2 publications

References 35 publications

Synergistic effect of phytohormones on pigment and fine structure of chloroplasts in flag leaf of wheat plants irrigated by seawater

Synergistic effect of phytohormones on pigment and fine structure of chloroplasts in flag leaf of wheat plants irrigated by seawater

Unexpected Effects of Sulfate and Sodium Chloride Application on Yield Qualitative Characteristics and Symmetry Indicators of Hard and Soft Wheat Kernels

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