scholarly journals Contribution and distribution of inorganic ions and organic compounds to the osmotic adjustment in Halostachys caspica response to salt stress

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Youling Zeng ◽  
Ling Li ◽  
Ruirui Yang ◽  
Xiaoya Yi ◽  
Baohong Zhang
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Organic Compounds ◽  
Osmotic Adjustment ◽  
Inorganic Ions ◽  
Reproductive Organs ◽  
Plant Tolerance ◽  
Plant Growth And Development ◽  
Halostachys Caspica ◽  
Tolerance To Salinity

Abstract The mechanism by which plants cope with salt stress remains poorly understood. The goal of this study is to systematically investigate the contribution and distribution of inorganic ions and organic compounds to the osmotic adjustment (OA) in the halophyte species Halostachys caspica. The results indicate that 100–200 mM NaCl is optimal for plant growth; the water content and degree of succulence of the assimilating branches are higher in this treatment range than that in other treatments; parenchyma cells are more numerous with 100 mM NaCl treatment than they are in control. Inorganic ions (mainly Na+ and Cl-) may play a more important role than organic compounds in NaCl-induced OA and are the primary contributors in OA in H. caspica. The inorganic ions and organic solutes display a tissue-dependent distribution. Na+ and Cl− are accumulated in the reproductive organs and within assimilating branches, which may represent a mechanism for protecting plant growth by way of salt ion dilution and organ abscission. Additionally, OA via increased accumulation of organic substances also protected plant growth and development. This finding provides additional evidence for plant tolerance to salinity stress which can be used for breeding new cultivars for stress tolerance.

scholarly journals Overview of the Role of Rhizobacteria in Plant Salt Stress Tolerance

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1759
Author(s):  
Miguel Ayuso-Calles ◽  
José David Flores-Félix ◽  
Raúl Rivas
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Osmotic Stress ◽  
Nutrient Deficiency ◽  
Cost Effective ◽  
Growth And Yield ◽  
Soil Conditions ◽  
Saline Stress ◽  
Plant Growth Promoting Bacteria ◽  
Plant Tolerance

Salinity is one of the main causes of abiotic stress in plants, resulting in negative effects on crop growth and yield, especially in arid and semi-arid regions. The effects of salinity on plant growth mainly generate osmotic stress, ion toxicity, nutrient deficiency, and oxidative stress. Traditional approaches for the development of salt-tolerant crops are expensive and time-consuming, as well as not always being easy to implement. Thus, the use of plant growth-promoting bacteria (PGPB) has been reported as a sustainable and cost-effective alternative to enhance plant tolerance to salt stress. In this sense, this review aims to understand the mechanisms by which PGPB help plants to alleviate saline stress, including: (i) changes in the plant hormonal balance; (ii) release of extracellular compounds acting as chemical signals for the plant or enhancing soil conditions for plant development; (iii) regulation of the internal ionic content of the plant; or iv) aiding in the synthesis of osmoprotectant compounds (which reduce osmotic stress). The potential provided by PGPB is therefore an invaluable resource for improving plant tolerance to salinity, thereby facilitating an increase in global food production and unravelling prospects for sustainable agricultural productivity.

scholarly journals Response of phytohormone mediated plant homeodomain (PHD) family to abiotic stress in upland cotton (Gossypium hirsutum spp.)

2020 ◽  
Author(s):  
Huanhuan Wu ◽  
Lei Zheng ◽  
Ghulam Qanmber ◽  
Mengzhen Guo ◽  
Zhi Wang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Gene Family ◽  
Gene Structure ◽  
Growth And Development ◽  
Expression Patterns ◽  
Plant Tolerance ◽  
Plant Growth And Development ◽  
Functional Studies ◽  
Cotton Species ◽  
Plant Homeodomain

Abstract Background: The sequencing and annotations of cotton genomes provide powerful theoretical support to unravel more physiological and functional information. Plant homeodomain (PHD) protein family has been reported to be involved in regulating various biological processes in plants. However, their functional studies have not yet been carried out in cotton. Results: In this study, 108, 55, and 52 PHD genes were identified in G. hirsutum, G. raimondii, and G. arboreum, respectively. A total of 297 PHD genes from three cotton species, Arabidopsis, and rice were divided into five groups. We performed chromosomal location, phylogenetic relationship, gene structure, and conserved domain analysis for GhPHD genes. GhPHD genes were unevenly distributed on each chromosome, however, more GhPHD genes were distributed on At_05, Dt_05, and At_07 chromosomes. GhPHD proteins depicted conserved domains, and GhPHD genes exhibiting similar gene structure were clustered together. Further, whole genome duplication analysis indicated that purification selection greatly contributed to the functional maintenance of GhPHD gene family. Expression pattern analysis based on RNA-seq data showed that most GhPHD genes showed clear tissue-specific spatiotemporal expression patterns elucidating the multiple functions of GhPHDs in plant growth and development. Moreover, analysis of cis-acting elements revealed that GhPHDs may respond to a variety of abiotic and phytohormonal stresses. In this regard, some GhPHD genes showed good response against abiotic and phytohormonal stresses. Additionally, co-expression network analysis indicated that GhPHDs are essential for plant growth and development, while GhPHD genes response against abiotic and phytohormonal stresses may help to improve plant tolerance in adverse environmental conditions. Conclusion: This study will provide useful information to facilitate further research related to the vital roles of GhPHD gene family in plant growth and development.

scholarly journals Exogenous salicylic acid treatments enhance tolerance to salinity of wheat (Triticum aestivum) plantlets

2010 ◽  
pp. 34-38
Author(s):  
Cornelia Purcǎrea ◽  
Dorina Cachită ◽  
Adriana Petrus ◽  
Liviu Pop ◽  
Adriana Chis
Keyword(s):  
Salicylic Acid ◽  
Salt Stress ◽  
Growth And Development ◽  
Higher Plants ◽  
Plant Growth And Development ◽  
Physiological Processes ◽  
Negative Effect ◽  
Exogenous Treatment ◽  
Exogenous Salicylic Acid ◽  
Tolerance To Salinity

Salt stress, an abiotic stress, determines modifications of some biochemical indicators, like, antioxidant enzymes, proline (amino acidaccumulate in higher plants under salinity stress) content, and some physiological processes including: plant growth and development. Inthis paper we studied the influence of exogenous treatment of wheat seeds, with 0.1 mM salicylic acid (SA) solution, in the plant response tosalt stress. The treatment was applied by presoaking the seeds in the treatment solution for 12 hours before germination. The results showedthat exogenous 0.1 mM SA solution, administrated to the wheat cariopses significantly ameliorated the negative effect of salt stress in firstweek of germination in laboratory conditions.

scholarly journals USE OF PLANT GROWTH PROMOTING RHIZOBACTERIA AGAINST SALT STRESS FOR TOMATO (SOLANUM LYCOPERSICUM L.) SEEDLING GROWTH

2020 ◽  
Vol 19 (6) ◽  
pp. 15-29
Author(s):  
Yagmur Yilmaz ◽  
Ceknas Erdinc ◽  
Ahmet Akkopru ◽  
Selma Kipcak
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Pseudomonas Putida ◽  
Photosynthetic Pigment ◽  
Plant Growth Promoting Rhizobacteria ◽  
Growth And Yield ◽  
Plant Tolerance ◽  
Membrane Injury ◽  
Plant Growth Promoting ◽  
Growth Promoting

Salt stress affects many aspects of plant metabolism and as a result, growth and yield are reduced. The aim in this study was to determine the effects of plant growth promoting rhizobacteria (PGPR) on tomato plants under salt stress. With this aim, the Interland F1 cv. and bacterial isolates of Bacillus thuringiensis CA41/1, Pseudomonas putida 18/1K, Pseudomonas putida S5/4ep, and Pseudomonas putida 30 were used. Salt application was completed in two different doses of 25 and 50 mM NaCl when seedlings reached the stage of 3 true leaves. At the end of the study, in addition to seedling development criteria, some nutrient element contents and rates (K, Ca, Na, K/Na and Ca/Na), superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) enzyme activities, malondialdehyde (MDA) and photosynthetic pigment contents were determined. In the stress environment, PGPR inoculation increased K content by up to 10%, while apart from isolate P. putida no.30, the other isolates lowered Na content by up to 18%. Additionally, 18/1K and S5/4ep isolates were identified to reduce membrane injury index by up to 97%. It was identified that CA41/1, 18/1K and S5/4ep isolates were more effective against salt stress, especially. In general, the plant tolerance levels induced by the bacteria were identified to increase with the increase in salt stress.

scholarly journals Response of phytohormone mediated plant homeodomain (PHD) family to abiotic stress in upland cotton (Gossypium hirsutum spp.)

2020 ◽  
Author(s):  
Huanhuan Wu ◽  
Lei Zheng ◽  
Ghulam Qanmber ◽  
Mengzhen Guo ◽  
Zhi Wang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Gene Family ◽  
Gene Structure ◽  
Growth And Development ◽  
Expression Patterns ◽  
Plant Tolerance ◽  
Plant Growth And Development ◽  
Functional Studies ◽  
Cotton Species ◽  
Plant Homeodomain

Abstract Background: The sequencing and annotations of cotton genomes provide powerful theoretical support to unravel more physiological and functional information. Plant homeodomain (PHD) protein family has been reported to be involved in regulating various biological processes in plants. However, their functional studies have not yet been carried out in cotton.Results: In this study, 108, 55, and 52 PHD genes were identified in G. hirsutum, G. raimondii, and G. arboreum, respectively. A total of 297 PHD genes from three cotton species, Arabidopsis, and rice were divided into five groups. We performed chromosomal location, phylogenetic relationship, gene structure, and conserved domain analysis for GhPHD genes. GhPHD genes were unevenly distributed on each chromosome. However, more GhPHD genes were distributed on At_05, Dt_05, and At_07 chromosomes. GhPHD proteins depicted conserved domains, and GhPHD genes exhibiting similar gene structure were clustered together. Further, whole genome duplication (WGD) analysis indicated that purification selection greatly contributed to the functional maintenance of GhPHD gene family. Expression pattern analysis based on RNA-seq data showed that most GhPHD genes showed clear tissue-specific spatiotemporal expression patterns elucidating the multiple functions of GhPHDs in plant growth and development. Moreover, analysis of cis-acting elements revealed that GhPHDs may respond to a variety of abiotic and phytohormonal stresses. In this regard, some GhPHD genes showed good response against abiotic and phytohormonal stresses. Additionally, co-expression network analysis indicated that GhPHDs are essential for plant growth and development, while GhPHD genes response against abiotic and phytohormonal stresses may help to improve plant tolerance in adverse environmental conditions.Conclusion: This study will provide useful information to facilitate further research related to the vital roles of GhPHD gene family in plant growth and development.

scholarly journals Response of phytohormone mediated plant homeodomain (PHD) family to abiotic stress in upland cotton (Gossypium hirsutum spp.)

2020 ◽  
Author(s):  
Huanhuan Wu ◽  
Lei Zheng ◽  
Ghulam Qanmber ◽  
Mengzhen Guo ◽  
Zhi Wang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Gene Family ◽  
Gene Structure ◽  
Growth And Development ◽  
Expression Patterns ◽  
Plant Tolerance ◽  
Plant Growth And Development ◽  
Functional Studies ◽  
Cotton Species ◽  
Plant Homeodomain

Abstract Background: The sequencing and annotations of cotton genomes provide powerful theoretical support to unravel more physiological and functional information. Plant homeodomain (PHD) protein family has been reported to be involved in regulating various biological processes in plants. However, their functional studies have not yet been carried out in cotton.Results: In this study, 108, 55, and 52 PHD genes were identified in G. hirsutum, G. raimondii, and G. arboreum, respectively. A total of 297 PHD genes from three cotton species, Arabidopsis, and rice were divided into five groups. We performed chromosomal location, phylogenetic relationship, gene structure, and conserved domain analysis for GhPHD genes. GhPHD genes were unevenly distributed on each chromosome. However, more GhPHD genes were distributed on At_05, Dt_05, and At_07 chromosomes. GhPHD proteins depicted conserved domains, and GhPHD genes exhibiting similar gene structure were clustered together. Further, whole genome duplication (WGD) analysis indicated that purification selection greatly contributed to the functional maintenance of GhPHD gene family. Expression pattern analysis based on RNA-seq data showed that most GhPHD genes showed clear tissue-specific spatiotemporal expression patterns elucidating the multiple functions of GhPHDs in plant growth and development. Moreover, analysis of cis-acting elements revealed that GhPHDs may respond to a variety of abiotic and phytohormonal stresses. In this regard, some GhPHD genes showed good response against abiotic and phytohormonal stresses. Additionally, co-expression network analysis indicated that GhPHDs are essential for plant growth and development, while GhPHD genes response against abiotic and phytohormonal stresses may help to improve plant tolerance in adverse environmental conditions.Conclusion: This study will provide useful information to facilitate further research related to the vital roles of GhPHD gene family in plant growth and development.

Sign in / Sign up

Export Citation Format

Share Document