scholarly journals 1-Methylcyclopropene Modulates Physiological, Biochemical, and Antioxidant Responses of Rice to Different Salt Stress Levels

2019 ◽  
Vol 10 ◽  
Author(s):  
Sajid Hussain ◽  
Zhigang Bai ◽  
Jie Huang ◽  
Xiaochuang Cao ◽  
Lianfeng Zhu ◽  
...  
Keyword(s):  
Salt Stress ◽  
Antioxidant Responses ◽  
Stress Levels

Genetic Potential for Salt Tolerance During Germination in Lycopersicon Species

HortScience ◽  
1997 ◽  
Vol 32 (2) ◽  
pp. 296-300 ◽  
Author(s):  
M.R. Foolad ◽  
G.Y. Lin
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Genotypic Variation ◽  
Control Treatment ◽  
Molar Ratio ◽  
Wild Accession ◽  
Salt Tolerant ◽  
Plant Introductions ◽  
Genetic Potential ◽  
Stress Levels

Seed of 42 wild accessions (Plant Introductions) of Lycopersicon pimpinellifolium Jusl., 11 cultigens (cultivated accessions) of L. esculentum Mill., and three control genotypes [LA716 (a salt-tolerant wild accession of L. pennellii Corr.), PI 174263 (a salt-tolerant cultigen), and UCT5 (a salt-sensitive breeding line)] were evaluated for germination in either 0 mm (control) or 100 mm synthetic sea salt (SSS, Na+/Ca2+ molar ratio equal to 5). Germination time increased in response to salt-stress in all genotypes, however, genotypic variation was observed. One accession of L. pimpinellifolium, LA1578, germinated as rapidly as LA716, and both germinated more rapidly than any other genotype under salt-stress. Ten accessions of L. pimpinellifolium germinated more rapidly than PI 174263 and 35 accessions germinated more rapidly than UCT5 under salt-stress. The results indicate a strong genetic potential for salt tolerance during germination within L. pimpinellifolium. Across genotypes, germination under salt-stress was positively correlated (r = 0.62, P < 0.01) with germination in the control treatment. The stability of germination response at diverse salt-stress levels was determined by evaluating germination of a subset of wild, cultivated accessions and the three control genotypes at 75, 150, and 200 mm SSS. Seeds that germinated rapidly at 75 mm also germinated rapidly at 150 mm salt. A strong correlation (r = 0.90, P < 0.01) existed between the speed of germination at these two salt-stress levels. At 200 mm salt, most accessions (76%) did not reach 50% germination by 38 days, demonstrating limited genetic potential within Lycopersicon for salt tolerance during germination at this high salinity.

scholarly journals The Protective Effect of Exogenous Putrescine in the Response of Tea Plants (Camellia sinensis) to Salt Stress

HortScience ◽  
2018 ◽  
Vol 53 (11) ◽  
pp. 1640-1646 ◽  
Author(s):  
Fei Xiong ◽  
Jieren Liao ◽  
Yuanchun Ma ◽  
Yuhua Wang ◽  
Wanping Fang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Camellia Sinensis ◽  
Effective Means ◽  
Plant Performance ◽  
Photosynthetic Parameters ◽  
Activity Levels ◽  
Salinity Treatment ◽  
Ros Scavenging ◽  
Stress Levels ◽  
Tea Plants

Camellia sinensis cultivars were treated with 5 mm putrescine (Put) under a range of sodium chloride (NaCl) concentrations. Plant performance, as indicated by various indicators associated with plant growing condition such as photosynthetic parameters and polyamine (PA) contents, especially the content of Put, was improved by the treatment. The extent of both Na+ accumulation and K+ loss increased. The activity levels of the antioxidant enzymes related to salt stress, such as superoxide dismutase (SOD), peroxidase (POD), and catalase, were significantly altered with different salt stress levels and showed a decrease in the general trend. Besides, tea polyphenols, the tea quality indicator, increased during the salinity treatment but decreased when we applied Put. These findings suggest that treatment with Put might constitute an effective means for alleviating salinity stress–induced injury through its positive effect on photosynthetic efficiency and for controlling reactive oxygen species (ROS) scavenging ability under appropriate salt stress levels.

scholarly journals Physiological and antioxidant responses of cultivated and wild barley under salt stress

2020 ◽  
Vol 66 (No. 7) ◽  
pp. 334-344
Author(s):  
Zahra Jabeen ◽  
Nazim Hussain ◽  
Faiza Irshad ◽  
Jianbin Zeng ◽  
Ayesha Tahir ◽  
...  
Keyword(s):  
Dna Damage ◽  
Salt Stress ◽  
Wild Barley ◽  
Antioxidant Defense System ◽  
Oxidative Capacity ◽  
Plant Tissues ◽  
Salt Tolerant ◽  
Antioxidant Responses ◽  
Tibetan Wild Barley ◽  
High Degree

Saline soil is a critical environmental problem affecting crop yield worldwide. Tibetan wild barley is distinguished for its vast genetic diversity and high degree of tolerance to abiotic stress, including salinity. The present study compared the response of antioxidant defense system in the XZ16 wild and CM72 cultivated barleys to salt stress. Wild barley was relatively more tolerant than cultivated CM72, salt-tolerant cultivar, with less Na<sup>+</sup> uptake and more K<sup>+</sup>, Ca<sup>2+</sup>, and Mg<sup>2+</sup> retention in plant tissues. The results of diaminobenzidine (DAB) and nitroblue tetrazolium (NBT) staining showed that XZ16 had significantly lower H<sub>2</sub>O<sub>2</sub> and O<sub>2</sub><sup>−</sup> concentrations than a salt-sensitive cultivar Gairdner, suggesting that the salt-tolerant genotype suffer from less oxidative damage. Moreover, XZ16 and Gairdner had the highest and lowest anti-oxidative enzyme activities and proline content in plant tissues. In addition, the microscopic examination revealed that DNA damage in cv. Gairdner was closely correlated to oxidative stress, representing that more reactive oxygen species accumulation in plants tissues leads to subsequent DNA damage. The present results show that higher salt tolerance of wild barley XZ16 is attributed to less Na<sup>+</sup> accumulation and stronger anti-oxidative capacity.  

Physiological and antioxidant responses of Mentha pulegium (Pennyroyal) to salt stress

2009 ◽  
Vol 32 (2) ◽  
pp. 289-296 ◽  
Author(s):  
Samia Oueslati ◽  
Najoua Karray-Bouraoui ◽  
Houneïda Attia ◽  
Mokded Rabhi ◽  
Riadh Ksouri ◽  
...  
Keyword(s):  
Salt Stress ◽  
Mentha Pulegium ◽  
Antioxidant Responses

Physiological and antioxidant responses of germinating Cicer arietinum seeds to salt stress

2012 ◽  
Vol 59 (2) ◽  
pp. 206-211 ◽  
Author(s):  
S. Keshavkant ◽  
J. Padhan ◽  
S. Parkhey ◽  
S. C. Naithani
Keyword(s):  
Salt Stress ◽  
Cicer Arietinum ◽  
Antioxidant Responses
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