Prolonged salt stress alters the ratios of protochlorophyllide spectral forms in dark-grown wheat (Triticum aestivum) and influences chlorophyll a accumulation following irradiation

Abdelkader, Amal Fadl; Aronsson, Henrik; Sundqvist, Christer

doi:10.1007/s11738-010-0486-x

Cited by 5 publications

(2 citation statements)

References 31 publications

(30 reference statements)

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“…The increased levels of the long-wavelength form of protochlorophyllide contribute to protective mechanisms against salt stress, as suggested by Abdelkader et al 69 Additionally, the abundance of certain enzymes that was increased at late stages of stress in TSOR, such as NADH dehydrogenase and chloroplastic glucose-6-phosphate isomerase (G6P isomerase), was increased at the early stage in TS110R. The chloroplastic G6P isomerase is required for the synthesis of starch in leaves, 70,71 and its increased abundance in response to salt stress in Dunaliella salina 72 signifies its role in salt stress tolerance.…”

Section: Protection Of Photosystem Is More Crucial Than Upregulation ...mentioning

confidence: 86%

Comparative Proteomics Unravels the Differences in Salt Stress Response of Own-Rooted and 110R-Grafted Thompson Seedless Grapevines

et al. 2019

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Thompson Seedless, a commonly grown table grape variety, is sensitive to salinity when grown on its own roots, and therefore, it is frequently grafted onto salinity-tolerant wild grapevine rootstocks. Rising soil salinity is a growing concern in irrigated agricultural systems. The accumulation of salts near the root zone severely hampers plant growth, leading to a decrease in the productive lifespan of grapevine and causing heavy yield losses to the farmer. In the present study, we investigated the differences in response to salinity between own-rooted Thompson Seedless (TSOR) and 110R-grafted Thompson Seedless (TS110R) grapevines, wherein 110R is reported to be a salt-tolerant rootstock. The grapevines were subjected to salt stress by treating them with a 150 mM NaCl solution. The stress-induced changes in protein abundance were investigated using a label-free shotgun proteomics approach at three timepoints viz. 6 h, 48 h, and 7 days of salt treatment. A total of 2793 proteins were identified, of which 246 were differentially abundant at various time-points in TSOR and TS110R vines. The abundance of proteins involved in several biological processes such as photosynthesis, amino acid metabolism, translation, chlorophyll biosynthesis, and generation of precursor metabolites was significantly affected by salt stress in both the vines but at different stages of stress. The results revealed that TSOR vines responded fervently to salt stress, while TS110R vines adopted a preventive approach. The findings of this study add to the knowledge of salinity response in woody and grafted plants and hence open the scope for further studies on salt stress-specific differences induced by grafting.

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Section: Protection Of Photosystem Is More Crucial Than Upregulation ...mentioning

confidence: 86%

Comparative Proteomics Unravels the Differences in Salt Stress Response of Own-Rooted and 110R-Grafted Thompson Seedless Grapevines

et al. 2019

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“…In previous studies, floating of the leaf segments of dark-grown seedlings of an Egyptian salt-sensitive wheat cultivar (T. aestivum cv. Giza 168) on 600 mM KCl:NaCl (1:1) solution in the dark for 4,5 h resulted in swelling of the PT lumen and strong inhibition of greening, Chl accumulation and etioplast-to-chloroplast transformation (Abdelkader et al, 2007a(Abdelkader et al, , 2007b(Abdelkader et al, , 2010. Salt stress induced either swelling (e.g., Yamane et al, 2004Yamane et al, , 2008Ounoki et al 2021) or no swelling (e.g., Hasan et al, 2006;Hernández et al, 1995) of the intrathylakoidal space in the chloroplast.…”

Section: Discussionmentioning

confidence: 99%

Etioplasts are more susceptible to salinity stress than chloroplasts and photosynthetically active etio‐chloroplasts of wheat (Triticum aestivum L.)

Ounoki,

Sóti,

Ünnep

et al. 2023

Physiologia Plantarum

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High soil salinity is a global problem in agriculture that directly affects seed germination and the development of the seedlings sown deep in the soil. To study how salinity affected plastid ultrastructure, leaf segments of 11‐day‐old light‐ and dark‐grown (etiolated) wheat (Triticum aestivum L. cv. Mv Béres) seedlings were floated on Hoagland solution, 600 mM KCl:NaCl (1:1) salt or isosmotic polyethylene glycol solution for 4 h in the dark. Light‐grown seedlings were also treated in the light. The same treatments were also performed on etio‐chloroplasts of etiolated seedlings greened for different time periods. Salt stress induced slight to strong changes in the relative chlorophyll content, photosynthetic activity, and organization of thylakoid complexes. Measurements of malondialdehyde contents and high‐temperature thermoluminescence indicated significantly increased oxidative stress and lipid peroxidation under salt treatment, except for light‐grown leaves treated in the dark. In chloroplasts of leaf segments treated in the light, slight shrinkage of grana (determined by transmission electron microscopy and small‐angle neutron scattering) was observed, while a swelling of the (pro)thylakoid lumen was observed in etioplasts. Salt‐induced swelling disappeared after the onset of photosynthesis after 4 h of greening. Osmotic stress caused no significant alterations in plastid structure and only mild changes in their activities, indicating that the swelling of the (pro)thylakoid lumen and the physiological effects of salinity are rather associated with the ionic component of salt stress. Our data indicate that etioplasts of dark‐germinated wheat seedlings are the most sensitive to salt stress, especially at the early stages of their greening.

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Overaccumulation of glycine betaine makes the function of the thylakoid membrane better in wheat under salt stress

et al. 2017

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Prolonged salt stress alters the ratios of protochlorophyllide spectral forms in dark-grown wheat (Triticum aestivum) and influences chlorophyll a accumulation following irradiation

Abstract: To examine the effects of salt stress on darkgrown wheat (Triticum aestivum)

Cited by 5 publications

References 31 publications

Comparative Proteomics Unravels the Differences in Salt Stress Response of Own-Rooted and 110R-Grafted Thompson Seedless Grapevines

Comparative Proteomics Unravels the Differences in Salt Stress Response of Own-Rooted and 110R-Grafted Thompson Seedless Grapevines

Etioplasts are more susceptible to salinity stress than chloroplasts and photosynthetically active etio‐chloroplasts of wheat (Triticum aestivum L.)

Overaccumulation of glycine betaine makes the function of the thylakoid membrane better in wheat under salt stress

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