Effect of NaCl on Salt Resistance of Suaeda physophora, Haloxylon ammodendron and Haloxylon persicum during Their Seed Germination and Young Seedling Stages

2010 ◽  
Vol 26 (4) ◽  
pp. 543-547
Author(s):  
Jie SONG ◽  
Chang-yan TIAN ◽  
Li-yun ZHANG ◽  
Gu FENG
Keyword(s):  
Seed Germination ◽  
Salt Resistance ◽  
Haloxylon Ammodendron ◽  
Young Seedling ◽  
Suaeda Physophora

Aquaporin OsPIP1;1 promotes rice salt resistance and seed germination

2013 ◽  
Vol 63 ◽  
pp. 151-158 ◽  
Author(s):  
Chengwei Liu ◽  
Tatsuya Fukumoto ◽  
Tadashi Matsumoto ◽  
Patrizia Gena ◽  
Daniele Frascaria ◽  
...  
Keyword(s):  
Seed Germination ◽  
Salt Resistance

scholarly journals Effect of Saline-Alkali and Drought Stress on Seed Germination of Haloxylon Ammodendron*

2020 ◽  
Vol 1578 ◽  
pp. 012209
Author(s):  
Te Xu ◽  
Kangning He ◽  
Hui Wang ◽  
Tan Zhang ◽  
Bo Chang
Keyword(s):  
Drought Stress ◽  
Seed Germination ◽  
Haloxylon Ammodendron

scholarly journals AGL16 negatively modulates stress response to balance with growth

2021 ◽  
Author(s):  
Ping-Xia Zhao ◽  
Jing Zhang ◽  
Si-Yan Chen ◽  
Jie Wu ◽  
Jing-Qiu Xia ◽  
...  
Keyword(s):  
Stress Response ◽  
Seed Germination ◽  
Target Genes ◽  
Critical Role ◽  
Ion Homeostasis ◽  
Salt Resistance ◽  
Negative Regulator ◽  
Balance Growth ◽  
Wild Type ◽  
Enhanced Expression

ABSTRACTSensile plants constantly experience environmental stresses in nature. They must have evolved effective mechanisms to balance growth with stress response. Here we report the MADS-box transcription factor AGL16 acting as a negative regulator in stress response. Loss-of-AGL16 confers resistance to salt stress in seed germination, root elongation, and soil-grown plants, while elevated AGL16 expression confers the opposite phenotypes compared with wild type. However, the sensitivity to ABA in seed germination is inversely correlated with AGL16 expression level. Transcriptomic comparison revealed that the improved salt resistance of agl16 mutant was largely attributed to enhanced expression of stress responsive transcriptional factors and genes involved in ABA signaling and ion homeostasis. We further demonstrated that AGL16 directly binds to the CArG motifs in the promoter of HKT1;1, HsfA6a, and MYB102 and represses their expression. Genetic analyses with double mutants also support that HsfA6a and MYB102 are target genes of AGL16. Taken together, our results show that AGL16 acts as negative regulator transcriptionally suppressing key components in stress response and may play a critical role in balancing stress response with growth.

Effects of five different salts on seed germination and seedling growth of Haloxylon ammodendron (Chenopodiaceae)

2004 ◽  
Vol 14 (4) ◽  
pp. 345-353 ◽  
Author(s):  
Kazuo Tobe ◽  
Xiaoming Li ◽  
Kenji Omasa
Keyword(s):  
Cell Wall ◽  
Plasma Membrane ◽  
Seed Germination ◽  
Seedling Growth ◽  
Saline Soils ◽  
Initial Growth ◽  
Salt Solutions ◽  
Haloxylon Ammodendron ◽  
Low Concentration ◽  
Low Concentrations

Saline soils contain multiple types of salt, each of which may exert a different effect on seed germination and seedling growth of plants. The effects of five types of salt on the initial growth of Haloxylon ammodendron, a shrub found on both saline and non-saline areas in deserts of China, were investigated. Seeds were incubated at 20°;C in the dark in a solution (0 to –5.1 MPa) of a salt (NaCl, MgCl2, CaCl2, Na2SO4 or MgSO4) or polyethylene glycol (PEG)-6000, or in a salt (NaCl or MgCl2) or PEG solution containing a low concentration of CaCl2. Seed germination, seedling growth and cation (Na+, Mg2+, Ca2+ and K+) contents of seedlings were examined. Each salt had a different effect on seed germination, seedling growth and influx and outflux of cations in the seedlings. In both NaCl and MgCl2 treatments, the addition of low concentrations of CaCl2 favoured seed germination and seedling growth, and reduced K+ outflux from seedlings, but caused no appreciable decrease in the influx of Na+ or Mg2+ into seedlings. Marked abnormalities in seedlings were found only in treatments with Mg2+ salts, but these effects were completely alleviated by a low concentration of Ca2+ (Ca2+/Mg2+ = 0.012). The different responses of the initial growth in H. ammodendron to different isotonic salt solutions were attributed to differences among salt components in membrane permeability, toxicity and effects on functions of the plasma membrane and/or the cell wall.

scholarly journals Arbuscular Mycorrhizal Fungi Improve the Antioxidative Response and the Seed Production of Suaedoideae Species Suaeda physophora Pall Under Salt Stress

2016 ◽  
Vol 44 (2) ◽  
pp. 533-540 ◽  
Author(s):  
Xue YANG ◽  
Hongqing YU ◽  
Tao Zhang ◽  
Jixun GUO ◽  
Xiang ZHANG
Keyword(s):  
Salt Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Salt Resistance ◽  
P Uptake ◽  
Growth And Survival ◽  
Significant Difference ◽  
Population Survival ◽  
Suaeda Physophora

Arbuscular mycorrhizal fungi (AMF) play a key role in plant growth and survival; however, the influence of AMF on the growth and production of Suaedoideae species is still not well understood. The object of this study was to understand the mechanism of AMF that affects the growth of Suaedoideae species under different saline conditions. The result showed that the Suaedoideae species Suaeda physophora was colonized by the AMF species Glomus etunicatum (Ge) and Glomus mosseae (Gm). AMF significantly increased the activities of superoxide dismutase (SOD) and peroxidase (POD) in S. physophora and reduced the concentrations of malondialdehyde (MDA) and H2O2 in the leaves of S. physophora under salt stress. AMF also improved the aboveground biomass of S. physophora and significantly increased its seed numbers. Moreover, AMF increased the aboveground phosphorus (P) content of S. physophora. No significant difference between the effect of AMF species Ge and Gm on S. physophora growth was observed. These results suggest that AMF can increase the salt resistance of the Suaedoideae species S. physophora by increasing SOD and POD activities, reducing MDA and H2O2 concentrations and increasing P uptake. The results highlight that AMF might play an important role in S. physophora growth and population survival under harsh salt conditions.

scholarly journals Effects of Sodium Chloride and Sodium Sulfate on Haloxylon ammodendron Seed Germination

2020 ◽  
Vol 12 (12) ◽  
pp. 4927
Author(s):  
Zhazira Zhumabekova ◽  
Xinwen Xu ◽  
Yongdong Wang ◽  
Chunwu Song ◽  
Alzhan Kurmangozhinov ◽  
...  
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
High Salinity ◽  
Seed Viability ◽  
Gobi Desert ◽  
Distilled Water ◽  
Haloxylon Ammodendron ◽  
High Recovery ◽  
Desert Areas ◽  
Germinated Seeds

Haloxylon ammodendron is a perennial xerophyte that can survive in extremely harsh desert conditions of Central Asia. This study evaluated the effect of salinity, and their ability to recover on seed germination of H. ammodendron, which were collected at three different desert areas, Bakanas takyr plain (H1), Gurbantüngüt Desert (H2), and Gobi Desert (H3), respectively. Seeds were treated with different concentrations of NaCl and Na2SO4 (0.00 (control), 0.05, 0.10, 0.20, 0.40, 0.60, 0.80, 1.00, 1.20, and 1.40 mol/L) to detemine the germination and recover ability to salt stress. The results of the study were that H. ammodendron were more resistant to Na2SO4 than to NaCl. Regarding inhibition of seed germination H. ammodendron was in the following order: H3 > H2 > H1. Based on the tolerance and recovery, seeds can be demonstrated as follows: NaCl: H3 > H1 > H2; Na2SO4: H1 = H2 = H3. Non-germinated seeds in all salt treatments with low osmotic potential showed high recovery when transferred to distilled water, indicating that these treatments were not too toxic to affect seed viability. These results suggest that H. ammodendron can withstand high levels of salinity at three desert environments. Thus, H. ammodendron could be used to reconstruct vegetation and sustanbility development in the desert areas with high salinity.

scholarly journals Salt Resistance of Tomato (Lycopersicon esculentum Mill.) Cultivars Produced in Benin at Germination Stage

2019 ◽  
pp. 1-12
Author(s):  
Eliane Kinsou ◽  
David Montcho ◽  
Séraphin Ahissou Zanklan ◽  
Julien Koffi Kpinkoun ◽  
Françoise Assogba Komlan ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Seed Germination ◽  
Germination Rate ◽  
Nacl Stress ◽  
Salt Resistance ◽  
Tolerance Index ◽  
Resistance Level ◽  
Significant Difference ◽  
Salt Tolerance Index ◽  
Germination Stage

Aims: In this research study, salt resistance level of seven tomato cultivars grown in Benin, namely Akikon, Tounvi; F1 Mongal, Petomech, Padma, TLCV 15 and Thorgal was evaluated at the germination stage. Study Design: The experiment was laid out as a completely randomized design with four replications. Place and Duration of Study: The experiment was carried out in the Laboratory of Plant Physiology and Abiotic Stresses Study of University of Abomey-Calavi, Republic of Benin from May to June, 2017. Methodology: Seeds were submitted to treatment with four NaCl concentrations (0; 30; 60 and 90 mM NaCl) in Petri dishes. Seed germination was checked every day during ten days incubation period. Four replicates of 40 seeds each were used. Results: NaCl reduced seed germination rate in all cultivars from day 2 to day 10 and the germination index proportionately to NaCl concentration. At the end of the 10 days, salt stress reduced the final germination percentages with a significant difference among cultivars: cultivars F1 Mongal followed by Akikon, Thorgal, TLCV15 and Tounvi were less affected in comparison with the two other cultivars. Salt Tolerance Index was significantly variable according to the cultivar with the highest values for cultivars F1 Mongal (1.086), Akikon (1.028), TLCV15 (1.005) and Tounvi (0.989) and the weakest value for cultivar Petomech (0.436). Conclusion: NaCl stress delayed seed germination and reduced the rate of final germination. Salt Tolerance Index was variable among the seven cultivars. Based on this criterion, cultivars F1 Mongal, Akikon, TLCV15 and Tounvi were the most salt-resistant whereas Petomech was the most salt-sensitive at germination stage.

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