Growth, Physiological, Biochemical, and Ionic Responses of Morus alba L. Seedlings to Various Salinity Levels

Lu, Nan; Luo, Zhi-Ming; Yong-pei, KE; Dai, Li; Duan, Hongjing; Cui, Binbin; Dou, Suhan; Zhang, Yadong; Sun, Yuhan; Li, Yun

doi:10.3390/f8120488

Cited by 7 publications

(5 citation statements)

References 42 publications

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“…Many studies have also described similar responses of plants to high salinity, a decrease in leaf area or root and stem length, and a change in the root/shoot ratio was also observed in oak (Quercus robur L.) seedlings [39]. Mulberry (Morus alba L.) seedlings suffered great reductions in root, shoot, and leaf growth under various levels of NaCl stress [40]. These results confirm that salinity is one of the major environmental factors that restricts the growth and productivity of plants.…”

Section: Seedling Growthmentioning

confidence: 74%

Ecophysiological Responses of Carpinus turczaninowii L. to Various Salinity Treatments

Zhou

Shi

Zhu

et al. 2019

Forests

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Carpinus turczaninowii L., commonly known as hornbeam, has significant economic and ornamental importance and is largely distributed in the northern hemisphere, including parts of China and Korea, with high adaptation to harsh conditions in very unfertile soils. In this study, the ecophysiological responses of C. turczaninowii seedlings to various salinity stress treatments (NaCl: 0, 17, 34, 51, 68, and 85 mM) were studied for 42 days by determining stress-induced changes in growth parameters and biochemical markers. Salinity stress affected the values of all the examined parameters, both morphological and physiological, and caused the inhibition of plant growth, the degradation of photosynthetic capacity and stomatal behavior, a decrease in the photosynthetic pigments contents and relative water content, an increase in the Malondialdehyde (MDA) content and relative electrolytic conductivity, and the accumulation of Na+ and Cl− content. The presence of relatively high concentrations of organic osmolytes, the activation of antioxidant enzymes, and the ionic transport capacity from the root to shoots may represent a constitutive mechanism of defence against stress in C. turczaninowii seedlings. Our results suggest that C. turczaninowii can tolerate salinity at low and moderate concentrations (17–51 mM) under nursery conditions and can be widely used in roadsides, gardens, parks, and other urban areas.

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Section: Seedling Growthmentioning

confidence: 74%

Ecophysiological Responses of Carpinus turczaninowii L. to Various Salinity Treatments

Zhou

Shi

Zhu

et al. 2019

Forests

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“…Our results are supported by previous reports that salt stress increases, glucose, sucrose, and fructans in many plants [ 38 ]. The activity of sucrose phosphate synthase increases as the concentration of reducing and non-reducing sugars rises in salinity, whereas starch phosphorylase activity decreases [ 39 ]. The mutagenic effects of EMS on NaCl-stressed calluses showed a further increase in contents of carbohydrates.…”

Section: Discussionmentioning

confidence: 99%

Impact of Ethyl Methane Sulphonate Mutagenesis in Artemisia vulgaris L. under NaCl Stress

Kumar

Kumari

2021

BioTech

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The present investigation aimed to obtain salt-tolerant Artemisia vulgaris L. to develop a constant form through in vitro mutagenesis with ethyl methane sulphonate (EMS) as the chemical mutagen. NaCl tolerance was evaluated by the ability of the callus to maintain its growth under different concentrations, ranges from (0 mM to 500 mM). However, NaCl salinity concentration at (500 mM) did not show any development of callus, slight shrinking, and brown discoloration taking place over a week. Thus, all the biochemical and antioxidant assays were limited to (0–400 mM) NaCl. On the other hand, selected calluses were treated with 0.5% EMS for 30, 60, and 90 min and further subcultured on basal media fortified with different concentrations of 0–400 mM NaCl separately. Thus, the callus was treated for 60 min and was found to induce the mutation on the callus. The maximum salt-tolerant callus from 400 mM NaCl was regenerated in MS medium fortified with suitable hormones. Biochemical parameters such as chlorophyll, carotenoids, starch, amino acids, and phenol contents decreased under NaCl stress, whereas sugar and proline increased. Peroxidase (POD) and superoxide dismutase (SOD) activities peaked at 200 mM NaCl, whereas catalase (CAT) was maximum at 100 mM NaCl. Enhanced tolerance of 0.5% the EMS-treated callus, attributed to the increased biochemical and antioxidant activity over the control and NaCl stress. As a result, the mutants were more tolerant of salinity than the control plants.

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“…In this study, we found that the salinity stress caused a prominent inhibition in the growth of C. betulus seedlings by the changes of height growth, diameter growth, the increment in leaf number, and dry weight of total biomass. A reduction in plant growth is a common effect of salt stress in other tree species, such as Morus alba [35] and Melia azedarach [36], and morphological changes and growth reductions provide visual evidence of the degree of injury caused by salt [37]. Salinity stress had a significantly higher inhibitory effect on the aboveground parts of C. betulus seedlings than on the belowground parts, which caused a significant increase in the root/shoot ratio.…”

Section: Discussionmentioning

confidence: 99%

Growth and Physicochemical Changes of Carpinus betulus L. Influenced by Salinity Treatments

Zhou

Zhu

Shi

et al. 2018

Forests

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Carpinus betulus L. is a deciduous tree widely distributed in Europe with strong adaptation, and it plays a key role in landscaping and timbering because of its variety of colors and shapes. Recently introduced to China for similar purposes, this species needs further study as to its physiological adaptability under various soil salinity conditions. In this study, the growth and physicochemical changes of C. betulus seedlings cultivated in soil under six different levels of salinity stress (NaCl: 0, 17, 34, 51, 68, and 85 mM) were studied for 14, 28 and 42 days. The plant growth and gas exchange parameters were not changed much by 17 and 34 mM NaCl, but they were significantly affected after treatments with 51~85 mM NaCl. The chlorophyll content was not significantly affected at 17 and 34 mM salinity, and the relative water content, malondialdehyde content and cell membrane stability of C. betulus did not change obviously under the 17 and 34 mM treatments, indicating that C. betulus is able to adapt to low-salinity conditions. The amount of osmotic adjustment substances and the antioxidant enzyme activity of C. betulus increased after 14 and 28 days and then decreased with increasing salinity gradients, but the proline content was increased during the entire time for different salinities. The Na content of different organs increased in response to salinity, and the K/Na, Ca/Na, and Mg/Na ratios were significantly affected by salinity. These results suggest that the ability of C. betulus to synthesize osmotic substances and enzymatic antioxidants may be impaired under severe saline conditions (68~85 mM NaCl) but that it can tolerate and accumulate salt at low salinity concentrations (17~34 mM NaCl). Such information is useful for land managers considering introducing this species to sites with various soil salinity conditions.

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Growth, Physiological, Biochemical, and Ionic Responses of Morus alba L. Seedlings to Various Salinity Levels

Cited by 7 publications

References 42 publications

Ecophysiological Responses of Carpinus turczaninowii L. to Various Salinity Treatments

Ecophysiological Responses of Carpinus turczaninowii L. to Various Salinity Treatments

Impact of Ethyl Methane Sulphonate Mutagenesis in Artemisia vulgaris L. under NaCl Stress

Growth and Physicochemical Changes of Carpinus betulus L. Influenced by Salinity Treatments

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