Effects of individual and combined effects of salinity and drought on physiological, nutritional and biochemical properties of cabbage (Brassica oleracea var. capitata)

Şahin, Üstün; Ekinci, Melek; Örs, Selda; Turan, Metin; Yıldız, Suzan; Yıldırım, Ertan

doi:10.1016/j.scienta.2018.06.016

Cited by 163 publications

(75 citation statements)

References 41 publications

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“…Global climatic change is predicted to alter growthseason precipitation-patterns, potentially increasing the risk of drought, and in particular extreme drought events during this century (Anand et al, 2003;Luo et al, 2018). Drought stress induces a set of physiological and biochemical reactions including reducing water use efficiency in plants, which impair normal growth and water status (Farooq et al, 2012;Sahin et al, 2018). Drought also generally results in inhibition of plant growth by disturbing the uptake of ions (Farooq et al, 2012;Huang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Under drought conditions NaCl improves the nutritional status of the xerophyte Zygophyllum xanthoxylum but not of the glycophyte Arabidopsis thaliana

Wang

Chai

Zhao

et al. 2019

J. Plant Nutr. Soil Sci.

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Zygophyllum xanthoxylum is a salt‐accumulating xerophytic species with excellent adaptability to adverse environments. Previous studies demonstrated that Z. xanthoxylum absorbs a great quantity of Na+ as an osmoregulatory substance under arid conditions. To investigate the nutritional status of Z. xanthoxylum in comparison with a typical glycophyte, Arabidopsis thaliana, seedlings were exposed to NaCl (50 mM for Z. xanthoxylum and 5 mM for A. thaliana), osmotic stress (–0.5 MPa), and osmotic stress combined with the NaCl treatment. Compared to the control, NaCl treatment or osmotic stress significantly increased Na+ concentration in leaves and roots of Z. xanthoxylum, but not of A. thaliana. Under osmotic stress, the addition of NaCl significantly increased Na+ concentration in leaves and roots of Z. xanthoxylum, resulting in improved biomass and tissue water content. However, such changes were not observed in A. thaliana. Compared to the control, K+ concentrations in leaves and roots remained unchanged in Z. xanthoxylum when exposed to osmotic stress, with or without additional 50 mM NaCl. In contrast, significant reductions in shoot K+ concentrations of A. thaliana were observed under osmotic stress alone or when combined with 5 mM NaCl. Moreover, NaCl alone or when combined with osmotic stress enhanced the accumulation of N, P, Fe, Si, Ca2+, and Mg2+ in Z. xanthoxylum, but did not cause such nutritional changes in A. thaliana. Compared to the glycophyte A. thaliana, Z. xanthoxylum could accumulate Na+ and maintain the stability of nutritional status at a relatively constant level to cope with drought stress.

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Section: Introductionmentioning

confidence: 99%

Under drought conditions NaCl improves the nutritional status of the xerophyte Zygophyllum xanthoxylum but not of the glycophyte Arabidopsis thaliana

Wang

Chai

Zhao

et al. 2019

J. Plant Nutr. Soil Sci.

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“…They reported that after 12 d of treatment with severe water deficit, the plants presented a lower percentage of RWC, with the Shanshu-2001 cultivar presenting high values of RWC, and greater resistance to water deficit; they concluded that the cultivar Shanshu-2001 had greater tolerance to water deficit because it also continued accumulating soluble proteins, high Pro levels, greater turgor, and less damage in the membrane. Sahin et al (2018), while evaluating cabbage plantlets (Brassica oleracea var. Capitata) using different irrigation regimens, were able to observe that the plants for which the treatment was most severe (close to 60% irrigation) presented less RWC.…”

Section: Discussionmentioning

confidence: 99%

Contribution of Glycine Betaine and Proline to Water Deficit Tolerance in Pepper Plants

Escalante-Magaña¹,

Aguilar-Caamal²,

Echevarría‐Machado³

et al. 2019

horts

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43 #130, Col. Chuburn a de Hidalgo, 97200 M erida, Yucat an, M exico Additional index words. Water potential, relative water content, osmolytes, electrolyte leakage, drought stress, pepperAbstract. Water stress is the main factor responsible for decreased productivity, which affects the growth and development of crops. Plants respond to stress by accumulating compatible solutes, which have a key role in osmotic adjustment, thereby resulting in osmoprotection of the plants. The loss of water can increase the concentration of compatible osmolytes and molecules that regulate the plant metabolism. These solutes can be metabolized as sugars (sucrose, fructose, trehalosa), amino acids (proline), an amphoteric quaternary amine (glycine betaine), and other low-molecular-weight metabolites. However, among all these compatible solutes, proline and glycine betaine occur the most. Proline is an amino acid that can accumulate in low concentrations under optimal conditions; however, stress conditions contribute to its increased content. Few data are available regarding the levels of endogenous glycine betaine on Solanaceae, which is considered a nonaccumulator under water deficit conditions. The objective of this research was to evaluate the role of compatible osmolytes, glycine betaine and proline, in Capsicum sp. plants under different water deficit conditions. In this study, the presence of endogenous levels of proline and glycine betaine in two species of pepper (Capsicum chinense var. Genesis and Rex and Capsicum annuum var. Padron) were found. The concentration levels of proline were 362, 292, and 246 mmol · g L1 DW for Genesis, Rex and Padron respectively, and irrigation conditions (rehydration) of proline levels increased to 381, 395, and 383 mmol · g L1 DW at 21 days. However, glycine betaine levels were 30-70 mmol · g L1 DW. The relative water content, electrolyte leakage, and soil water potential were also analyzed; therefore, the information suggests that proline contributes better to tolerance to water deficit in the genus Capsicum after 14 days of water deficit treatment. It seems that the contribution of glycine betaine is less effective than that of proline; therefore, it does not have an important role in osmotic adjustment.

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“…In this research, IL increased remarkably with the drought exposure. This indicates that the membrane has been damaged and reflects the increase in MDA and H 2 O 2 content [44,80,81].…”

Section: The Oxidative Damage Of Drought Stress To the Two Fern Speciesmentioning

confidence: 99%

Growth, Secondary Metabolites and Enzyme Activity Responses of Two Edible Fern Species to Drought Stress and Rehydration in Northeast China

Wang

Gao

et al. 2019

Agronomy

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The drought resistance mechanism of Matteuccia struthiopteris (L.) Todar. and Athyrium multidentatum (Doll.) Ching were measured under natural drought exposure. The results showed that the two edible fern species showed stronger resistance in the early stages of drought, mainly expressed as the decrease of relative leaf water content (RLWC), increase of osmotic substances, secondary metabolites such as flavonoids (FC), total phenols (TPC), proantho cyanidins (PCC) content and enzyme activity (superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX)). The higher RLWC, FC, TPC, PCC and abscisic acid (ABA) content and lower H2O2 content indicates the stronger non-enzymatic antioxidant system and drought resistance of A. multidentatum. However, the proline (Pro) content changed slowly, and the synthesis of soluble protein (SP), total phenols, proantho cyanidins and ABA, SOD activity of two fern species were inhibited in the late stages of drought stress. This study can provide a scientific basis for the cultivation and utilization of edible fern species under forest in Northeast China.

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Effects of individual and combined effects of salinity and drought on physiological, nutritional and biochemical properties of cabbage (Brassica oleracea var. capitata)

Cited by 163 publications

References 41 publications

Under drought conditions NaCl improves the nutritional status of the xerophyte Zygophyllum xanthoxylum but not of the glycophyte Arabidopsis thaliana

Under drought conditions NaCl improves the nutritional status of the xerophyte Zygophyllum xanthoxylum but not of the glycophyte Arabidopsis thaliana

Contribution of Glycine Betaine and Proline to Water Deficit Tolerance in Pepper Plants

Growth, Secondary Metabolites and Enzyme Activity Responses of Two Edible Fern Species to Drought Stress and Rehydration in Northeast China

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