The strategy of Na+ compartmentation and growth of Atriplex centralasiatica in adaptation to saline environments

Qiu, Nianwei; Zhou, Feng; Wang, Y.; Peng, Xiaoyuan; Hua, Chenyan

doi:10.1134/s1021443714020113

Cited by 6 publications

(3 citation statements)

References 27 publications

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“…Furthermore, we observed that the envelope membranes in the controls were likely ruptured. This indicated that the control treatment was an osmotic stress for S. bigelovii and resulted in low growth (Qiu et al 2014). The photosynthetic reduction in control treatments is likely due to damage of the photosynthetic apparatus, consistent with results from another halophytic plant, Arthrocnemum macrostachyum (Trotta et al 2012).…”

Section: Discussionmentioning

confidence: 94%

Promotion of growth and upregulation of thylakoid membrane proteins in the halophyte Salicornia bigelovii Torr. under saline conditions

Zhou

Qiu

et al. 2015

Acta Physiol Plant

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Salicornia bigelovii is an unusually salt-tolerant plant species and is able to continue to photosynthesize and grow in saline conditions. There is an interest in understanding the mechanisms of this salt tolerance. In this study, S. bigelovii plants grown under 400 mM NaCl had higher growth and higher photosynthetic capacity than those not grown with salt. The intensities of the fluorescence emission peaks in the thylakoid membrane spectra in the salt treatment were higher than in the control. PSII and PSI peaks of the control were blue-shifted, indicating that salt deficiency affects energy transfer and structural stability in PSII and PSI. Both SDS-PAGE and western blot illustrated that the PSI proteins PsaA and PsaB and the PSII proteins CP47 and CP43 were upregulated with salt treatment, which might partly explain the change in the energy transfer process. Furthermore, Lhcb1 was also stimulated by salt treatment while Lhcb2 and Lhcb3 did not show noticeable changes. This demonstrated that salt is important in the maintenance of photosynthesis. In summary, treatment with salt led to an increased amount of PsaA/B, CP47, CP43, and Lhcb1 with a concurrent increase in antennae size. These photosystem changes may be responsible for the adaptation of S. bigelovii to saline conditions.

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Section: Discussionmentioning

confidence: 94%

Promotion of growth and upregulation of thylakoid membrane proteins in the halophyte Salicornia bigelovii Torr. under saline conditions

Zhou

Qiu

et al. 2015

Acta Physiol Plant

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“…It has been reported that more than 95 % of Na + absorbed by salt-treated Atriplex centralasiatica plants accumulated in shoots, especially in leaves (Qiu et al 2014), while in buckwheat, the roots and stem base were the main places of Na + localization (Ma et al 2011). In this article, cortex of roots and parenchyma surrounding vascular bundle of stem base in buckwheat accumulated much more Na + than other parts.…”

Section: Discussionmentioning

confidence: 99%

Distribution of Na<sup>+</sup> in roots and stem bases of buckwheat seedlings

Zhan¹,

Yu²,

Hou³

et al. 2020

Biol. plant.

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The localizations of sodium exclusion are roots and stem base, however, Na + distribution in these localizations is unclear.Here, we used a salt-tolerant buckwheat cultivar Chuanqiao No.1 and a salt-sensitive cultivar TQ-0808 to demonstrate Na + distribution. We found that Na + content was highest in vacuole, the following was in cell wall or free space, and the least was in cytoplasm. Comparative analysis shows that Na + accumulation in vacuole, cell wall, or free space of roots and stem base in 'Chuanqiao No.1' was obviously higher than in 'TQ-0808'; in contrast, Na + accumulation in cytoplasm of 'Chuanqiao No.1' was less than in 'TQ-0808'. These results indicate that the capabilities of Na + extrusion and Na + compartmentalization of salt-tolerant buckwheat were obviously higher than of the salt-sensitive one, and the capabilities could effectively restrict Na + transport to shoot. Compartmentalization of Na + in the vacuole was the main way for Na + exclusion of salt-tolerant buckwheat. In addition, the transcriptions of Na + /H + antiporter 1 and salt overly sensitive 1 were remarkably higher in 'Chuanqiao No.1' than in 'TQ-0808', which is consistent with the above results.

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“…Dry samples (100 mg) of all green leaves, midribs, stems and roots of plant were ashed at 500 °C in a muffle furnace according to Qiu et al [ 76 ]. The ash was dissolved in concentrated nitric acid and diluted with distilled water; the Na + and K + concentrations were measured using a M410 Flame photometer (Sherwood, UK).…”

Section: Methodsmentioning

confidence: 99%

Physiological and Transcriptomic Responses of Chinese Cabbage (Brassica rapa L. ssp. Pekinensis) to Salt Stress

Qiu

Liu

et al. 2017

IJMS

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Salt stress is one of the major abiotic stresses that severely impact plant growth and development. In this study, we investigated the physiological and transcriptomic responses of Chinese cabbage “Qingmaye” to salt stress, a main variety in North China. Our results showed that the growth and photosynthesis of Chinese cabbage were significantly inhibited by salt treatment. However, as a glycophyte, Chinese cabbage could cope with high salinity; it could complete an entire life cycle at 100 mM NaCl. The high salt tolerance of Chinese cabbage was achieved by accumulating osmoprotectants and by maintaining higher activity of antioxidant enzymes. Transcriptomic responses were analyzed using the digital gene expression profiling (DGE) technique after 12 h of treatment by 200 mM NaCl. A total of 1235 differentially expressed genes (DEGs) including 740 up- and 495 down-regulated genes were identified. Functional annotation analyses showed that the DEGs were related to signal transduction, osmolyte synthesis, transcription factors, and antioxidant proteins. Taken together, this study contributes to our understanding of the mechanism of salt tolerance in Chinese cabbage and provides valuable information for further improvement of salt tolerance in Chinese cabbage breeding programs.

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The strategy of Na+ compartmentation and growth of Atriplex centralasiatica in adaptation to saline environments

Cited by 6 publications

References 27 publications

Promotion of growth and upregulation of thylakoid membrane proteins in the halophyte Salicornia bigelovii Torr. under saline conditions

Promotion of growth and upregulation of thylakoid membrane proteins in the halophyte Salicornia bigelovii Torr. under saline conditions

Distribution of Na<sup>+</sup> in roots and stem bases of buckwheat seedlings

Physiological and Transcriptomic Responses of Chinese Cabbage (Brassica rapa L. ssp. Pekinensis) to Salt Stress

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