Genetic improvement of cotton tolerance to salinity stress

2011 ◽  
Vol 6 (33) ◽  
Author(s):  
Xinrong Ma
Keyword(s):  
Salinity Stress ◽  
Genetic Improvement ◽  
Tolerance To Salinity

scholarly journals Oil and Flower Production in Rosa damascena trigintipetala Dieck under Salinity Stress in Taif Region, Saudi Arabia

2021 ◽  
Vol 13 (8) ◽  
pp. 4547
Author(s):  
Mohamed E. El-Sharnouby ◽  
Metwally M. Montaser ◽  
Sliai M. Abdallah
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Salinity Stress ◽  
Growth Parameters ◽  
Industrial Applications ◽  
Rosa Damascena ◽  
Flower Production ◽  
Survival Percentage ◽  
The Impact ◽  
Tolerance To Salinity

The flower industry depends on oil and fragrance, which is addressed in the current work. Different concentrations of NaCl (0, 250, 500, 1000, and 1500 ppm) were applied to Taif rose plants (Rosa damascena var. trigintipetala Dieck) to evaluate their effects on growth and essential oil content. Results clearly indicated the highest survival percentage (98.3%) was seen in untreated plants compared to plants under salinity stress. Moreover, increasing the NaCl levels induced an adverse effect on the growth parameters of Taif rose plants, while some essential oil contents were increased to the maximum degree of their tolerance to salinity stress. The extracted essential oils were analyzed using GC/MS. The essential oils of Taif rose plants treated with 500 ppm NaCl recorded the highest values of citronellol, geraniol and phenylethyl alcohol contents (16.56, 8.67 and 9.87%), respectively. NaCl at 250 ppm produced the highest values of heneicosane (13.12%), and then decreased to the lowest value (7.79%) with the increase of NaCl to 1500 NaCl, compared to the control and other NaCl levels. The current results could highlight the impact of salinity stress on Rosa damascena Miller var. trigintipetala Dieck for better economic and industrial applications.

scholarly journals Identification of genes associated with productivity traits and salinity tolerance from activation tagged lines of rice

2021 ◽  
Author(s):  
Kota Vamsee Raja ◽  
Kalva Madhanasekhar ◽  
Vudem Dashavantha Reddy ◽  
Attipalli Ramachandra Reddy ◽  
Khareedu Venkateswara Rao
Keyword(s):  
Stress Tolerance ◽  
Salinity Stress ◽  
Soluble Sugars ◽  
Crop Productivity ◽  
Antioxidant Systems ◽  
Wild Type ◽  
Stress Symptoms ◽  
Effective Antioxidant ◽  
Use Efficiency ◽  
Tolerance To Salinity

AbstractWorld-wide crop productivity is hugely impacted by diverse eco-environmental conditions. In the present investigation, activation tagged (AT) lines of rice endowed with improved agronomic attributes have been analyzed for tolerance to salinity stress besides identification of genes associated with these attributes. Under salinity stress conditions, AT lines exhibited increased seed germination rates, improved plant growth and development at vegetative and reproductive stages as compared to wild-type (WT) plants. Furthermore, AT lines disclosed enhanced plant water content, photosynthetic efficiency, stomatal conductance, water use efficiency and maximum quantum yield when compared to WT plants, leading to improved yields and delayed onset of stress symptoms. Moreover, AT lines revealed effective antioxidant systems causing decreased accumulation of reactive oxygen species and delayed salinity stress symptoms compared to WT plants. Reduced accumulation of malondialdehyde with concomitant increases in proline and soluble sugars of AT lines further endorsing their improved stress tolerance levels. TAIL and qRT-PCR analyses of AT lines revealed Ds element integrations at different loci and respective overexpression of identified candidate genes involved in various aspects of plant development and stress tolerance. Accordingly, the AT lines plausibly serve as a rare genetic resource for fortifying stress tolerance and productivity traits of elite rice cultivars.HighlightActivation tagged lines of rice endowed with improved agronomic attributes have been analyzed for tolerance to salinity stress besides identification and expression analysis of genes associated with these attributes.

Genetic Improvement of Sugarcane for Drought and Salinity Stress Tolerance Using Arabidopsis Vacuolar Pyrophosphatase (AVP1) Gene

2013 ◽  
Vol 56 (3) ◽  
pp. 199-209 ◽  
Author(s):  
Tanweer Kumar ◽  
Uzma ◽  
Muhammad Ramzan Khan ◽  
Zaheer Abbas ◽  
Ghulam Muhammad Ali
Keyword(s):  
Stress Tolerance ◽  
Salinity Stress ◽  
Genetic Improvement ◽  
Salinity Stress Tolerance

scholarly journals THE EFFECT OF CHITOSAN ON GENE EXPRESSION, SOME MORPHOLOGICAL AND PHYSIOLOGICAL TRAITS OF SWEET BASIL (Ocimum basilicum L.) UNDER SALINITY STRESS

2020 ◽  
Vol 19 (4) ◽  
pp. 21-30
Author(s):  
Nastaran Rashidi ◽  
Ramezan Ali Khavari-Nejad ◽  
Parvin Ramak ◽  
Sara Saadatmand
Keyword(s):  
Gene Expression ◽  
Salinity Stress ◽  
Growth Parameters ◽  
Foliar Spray ◽  
Phenylpropanoid Pathway ◽  
Chlorophyll Contents ◽  
Sweet Basil ◽  
Morphological And Physiological Traits ◽  
Tolerance To Salinity ◽  
Important Medicinal Plant

Sweet basil is an important medicinal plant belonging to Lamiaceae family. In this plant, Phenylpropanoid pathway possesses some enzymes involving in generating suitable essential oil constituents. The main purpose of conducting this study was to investigate the effects of chitosan on sweet basil’s growth and physiological parameters as well as gene expression subjected to salinity stress. After employing a foliar-spray of chitosan at 0 (as control) and 0.2 gl–1, the plants were subjected to salinity treatments at 0, 25, 50, 100, and 150 mM NaCl. The results of this research revealed that chitosan, compared to the controls, improved growth parameters under stressed or non-stressed conditions. In this regard, chitosan increased protein and chlorophyll contents as well as the expression of PAL and COVMT genes leading to an increase in phenolic compounds. To sum up, chitosan improved sweet basil tolerance to salinity through influencing the genes involved in the pathway of phenylpropanoid so as to produce secondary metabolites.

scholarly journals GsMAPK4, a positive regulator of soybean tolerance to salinity stress

2019 ◽  
Vol 18 (2) ◽  
pp. 372-380 ◽  
Author(s):  
You-wen QIU ◽  
Zhe FENG ◽  
Ming-ming FU ◽  
Xiao-han YUAN ◽  
Chao-chao LUO ◽  
...  
Keyword(s):  
Salinity Stress ◽  
Positive Regulator ◽  
Tolerance To Salinity

Response to salinity in Glycine. 4. Salt concentration and the content of phosphorus, potassium, sodium and chloride in cultivars of G. wightii (G. javanica)

1970 ◽  
Vol 10 (42) ◽  
pp. 99 ◽  
Author(s):  
CT Gates ◽  
KP Haydock ◽  
MF Robins
Keyword(s):  
Sodium Chloride ◽  
Plant Growth ◽  
Salinity Stress ◽  
Normal Growth ◽  
Ion Content ◽  
High Productivity ◽  
The World ◽  
Excess Sodium ◽  
And Control ◽  
Tolerance To Salinity

Adaptability to salinity stress was related to the productivity of Glycine wightii (G. javanica) cultivars by the technique of comparing the multivariate characteristics of response for 22 accessions that are representative of the world centres of origin. Roots and tops responses were compared to clarify the metabolic relations between glycines, as salinity was increased from that required for normal growth and metabolism to levels almost causing death due to excess sodium chloride in the substrate. There was a range and pattern of response that suggested grouping among the glycines. One group in particular was more resistant to salinity stress than others. These glycines exemplified to a greater degree than others the tendency of all to exclude sodium and to a lesser extent chloride from the plant tops. These were also the more vigorously growing glycines with a higher potassium, phosphorus, and nitrogen content in both control and saline treatments. In them, vigour of growth and control of ion content were associated, and both these factors were important determinants of tolerance to salinity stress. Sodium appeared to be more toxic than chloride to plant growth. These aspects of growth and metabolism are discussed in relation to differences in ploidy between the groups of glycines. The technique used shed further light on the important agricultural problem of combining adaptability and high productivity.

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