scholarly journals Salt-Induced Damage is Alleviated by Short-Term Pre-Cold Treatment in Bermudagrass (Cynodon dactylon)

Plants ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 347
Author(s):  
Jibiao Fan ◽  
Jilei Xu ◽  
Weihong Zhang ◽  
Maurice Amee ◽  
Dalin Liu ◽  
...  
Keyword(s):  
Salt Stress ◽  
Stress Tolerance ◽  
Cynodon Dactylon ◽  
Cold Treatment ◽  
Ion Homeostasis ◽  
Salt Stress Tolerance ◽  
Land Utilization ◽  
Short Term ◽  
Positive Role ◽  
Cell Membrane Stability

Excess salinity is a major environmental stress that limits growth and development of plants. Improving salt stress tolerance of plants is important in order to enhance land utilization and crop yield. Cold priming has been reported to trigger the protective processes in plants that increase their stress tolerance. Bermudagrass (Cynodon dactylon) is one of the most widely used turfgrass species around the world. However, the effect of cold priming on salt tolerance of bermudagrass is largely unknown. In the present study, wild bermudagrass was pre-treated with 4 °C for 6 h before 150 mM NaCl treatment for one week. The results showed that the cell membrane stability, ion homeostasis and photosynthesis process which are usually negatively affected by salt stress in bermudagrass were alleviated by short-term pre-cold treatment. Additionally, the gene expression profile also corresponded to the change of physiological indexes in bermudagrass. The results suggest that cold priming plays a positive role in improving salt stress tolerance of bermudagrass.

scholarly journals Melatonin: A Small Molecule but Important for Salt Stress Tolerance in Plants

2019 ◽  
Vol 20 (3) ◽  
pp. 709 ◽  
Author(s):  
Haoshuang Zhan ◽  
Xiaojun Nie ◽  
Ting Zhang ◽  
Shuang Li ◽  
Xiaoyu Wang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Stress Tolerance ◽  
Stress Responses ◽  
Ion Homeostasis ◽  
Free Radical Scavenger ◽  
Limiting Factors ◽  
Polyamine Metabolism ◽  
Antioxidant Systems ◽  
Radical Scavenger ◽  
Salt Stress Tolerance

Salt stress is one of the most serious limiting factors in worldwide agricultural production, resulting in huge annual yield loss. Since 1995, melatonin (N-acetyl-5-methoxytryptamine)—an ancient multi-functional molecule in eukaryotes and prokaryotes—has been extensively validated as a regulator of plant growth and development, as well as various stress responses, especially its crucial role in plant salt tolerance. Salt stress and exogenous melatonin lead to an increase in endogenous melatonin levels, partly via the phyto-melatonin receptor CAND2/PMTR1. Melatonin plays important roles, as a free radical scavenger and antioxidant, in the improvement of antioxidant systems under salt stress. These functions improve photosynthesis, ion homeostasis, and activate a series of downstream signals, such as hormones, nitric oxide (NO) and polyamine metabolism. Melatonin also regulates gene expression responses to salt stress. In this study, we review recent literature and summarize the regulatory roles and signaling networks involving melatonin in response to salt stress in plants. We also discuss genes and gene families involved in the melatonin-mediated salt stress tolerance.

Rhizobium symbiosis contribution to short-term salt stress tolerance in alfalfa (Medicago sativa L.)

2016 ◽  
Vol 402 (1-2) ◽  
pp. 247-261 ◽  
Author(s):  
Yafang Wang ◽  
Zhiqiang Zhang ◽  
Pan Zhang ◽  
Yuman Cao ◽  
Tianming Hu ◽  
...  
Keyword(s):  
Salt Stress ◽  
Medicago Sativa ◽  
Stress Tolerance ◽  
Salt Stress Tolerance ◽  
Short Term ◽  
Medicago Sativa L

scholarly journals Manganese-induced salt stress tolerance in rice seedlings: regulation of ion homeostasis, antioxidant defense and glyoxalase systems

2016 ◽  
Vol 22 (3) ◽  
pp. 291-306 ◽  
Author(s):  
Anisur Rahman ◽  
Md. Shahadat Hossain ◽  
Jubayer-Al Mahmud ◽  
Kamrun Nahar ◽  
Mirza Hasanuzzaman ◽  
...  
Keyword(s):  
Salt Stress ◽  
Stress Tolerance ◽  
Antioxidant Defense ◽  
Ion Homeostasis ◽  
Rice Seedlings ◽  
Salt Stress Tolerance

scholarly journals Genetic regulation of salt stress tolerance revealed by RNA-Seq in cotton diploid wild species, Gossypium davidsonii

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Feng Zhang ◽  
Guozhong Zhu ◽  
Lei Du ◽  
Xiaoguang Shang ◽  
Chaoze Cheng ◽  
...  
Keyword(s):  
Salt Stress ◽  
Stress Tolerance ◽  
Stress Responses ◽  
Genetic Regulation ◽  
Ion Homeostasis ◽  
Rna Seq ◽  
Salt Stress Tolerance ◽  
Crop Resistance ◽  
Cotton Species ◽  
Diploid Cotton

Abstract Cotton is an economically important crop throughout the world and is a pioneer crop in salt stress tolerance research. Investigation of the genetic regulation of salinity tolerance will provide information for salt stress-resistant breeding. Here, we employed next-generation RNA-Seq technology to elucidate the salt-tolerant mechanisms in cotton using the diploid cotton species Gossypium davidsonii which has superior stress tolerance. A total of 4744 and 5337 differentially expressed genes (DEGs) were found to be involved in salt stress tolerance in roots and leaves, respectively. Gene function annotation elucidated salt overly sensitive (SOS) and reactive oxygen species (ROS) signaling pathways. Furthermore, we found that photosynthesis pathways and metabolism play important roles in ion homeostasis and oxidation balance. Moreover, our studies revealed that alternative splicing also contributes to salt-stress responses at the posttranscriptional level, implying its functional role in response to salinity stress. This study not only provides a valuable resource for understanding the genetic control of salt stress in cotton, but also lays a substantial foundation for the genetic improvement of crop resistance to salt stress.

Sign in / Sign up

Export Citation Format

Share Document