scholarly journals A proteomic approach to understand the impact of nodulation on salinity stress response in alfalfa ( Medicago sativa L.)

Plant Biology ◽  
2021 ◽  
Author(s):  
Y. Wang ◽  
P. Yang ◽  
Y. Zhou ◽  
T. Hu ◽  
P. Zhang ◽  
...  
Keyword(s):  
Stress Response ◽  
Medicago Sativa ◽  
Salinity Stress ◽  
Proteomic Approach ◽  
Medicago Sativa L ◽  
The Impact

scholarly journals A proteomic approach to understand the impact of nodulation on salinity stress response in alfalfa (Medicago sativa L.)

2019 ◽  
Author(s):  
Yafang Wang ◽  
Pan Zhang ◽  
Tianming Hu ◽  
Yajun Wu ◽  
Peizhi Yang
Keyword(s):  
Host Plant ◽  
Salinity Stress ◽  
Carbon Fixation ◽  
Ion Homeostasis ◽  
Ros Scavenging ◽  
Proteomic Approach ◽  
Legume Symbiosis ◽  
Symbiotic Relation ◽  
The Impact ◽  
Synthesis And Degradation

Abstract Background Symbiotic nitrogen fixation in legumes is an important source of nitrogen supply in sustainable agriculture. Salinity is a key abiotic stress that negatively affects host plant growth, rhizobium-legume symbiosis and nitrogen fixation.Results To explore how the symbiotic relation impacts plant response to salinity, we assayed the proteome profile of alfalfa plants with active nodules (NA), inactive nodules (NI) or without nodules (NN) when plants were subjected to salinity stress. Our data suggested that NA plants respond to salinity stress through some unique signaling regulations. NA plants showed an upregulation of proteins related to cell wall remodeling and reactive oxygen species (ROS) scavenging and a down-regulation of proteins involved in protein synthesis and degradation. The data also showed that NA plants, together with NI plants, upregulated proteins in photosynthesis, carbon fixation and respiration, anion transport, and plant defense to pathogens.Conclusions The data suggest that the symbiotic relations conferred the host plant a better capacity to adjust the key processes, probably to more efficiently use energy and resources, deal with oxidative stress, and maintain ion homeostasis and healthy status during salinity stress.

Evaluation of Alfalfa (Medicago sativa L.) Populations’ Response to Salinity Stress

Crop Science ◽  
2016 ◽  
Vol 57 (1) ◽  
pp. 137-150 ◽  
Author(s):  
Mónica V. Cornacchione ◽  
Donald L. Suarez
Keyword(s):  
Medicago Sativa ◽  
Salinity Stress ◽  
Medicago Sativa L

Farmer-directed on-farm experimentation examining the impact of companion planting barley and oats on timothyalfalfa forage establishment in central Newfoundland

2004 ◽  
Vol 84 (1) ◽  
pp. 217-221 ◽  
Author(s):  
D. Spaner and A. G. Todd
Keyword(s):  
Hordeum Vulgare ◽  
Medicago Sativa ◽  
Avena Sativa ◽  
Phleum Pratense ◽  
Forage Production ◽  
Hordeum Vulgare L ◽  
Medicago Sativa L ◽  
On Farm ◽  
The Impact ◽  
Phleum Pratense L

Oats (Avena sativa L.) or barley (Hordeum vulgare L.) sown at increasing seeding rates of 23, 45 and 68 kg ha-1 with a timothy (Phleum pratense L.)-alfalfa (Medicago sativa L.) mixture (harvested at cereal soft dough) resulted in increasing forage yields containing decreasing alfalfa, crude protein, P and Ca percentage in the planting year. Barley out-yielded oats by 11% in the planting year. Oats or barley sown at seeding rates up to 68 kg ha-1 do not impede underseeded forage establishment or forage production in the subsequent year in central Newfoundland. The implications of farmer-directed on-farm experimentation are discussed. Key words: Hordeum vulgare L., Avena sativa L., Phleum pratense L, Medicago sativa L., underseeding

scholarly journals Overexpression of MsRCI2A, MsRCI2B, and MsRCI2C in Alfalfa (Medicago sativa L.) Provides Different Extents of Enhanced Alkali and Salt Tolerance Due to Functional Specialization of MsRCI2s

2021 ◽  
Vol 12 ◽  
Author(s):  
Chunxin Li ◽  
Tingting Song ◽  
Lifeng Zhan ◽  
Chunlong Cong ◽  
Huihui Xu ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Salinity Stress ◽  
High Salinity ◽  
Ion Homeostasis ◽  
Functional Specialization ◽  
Alkali Stress ◽  
Plasma Membrane Protein ◽  
Regulatory Relationship ◽  
Functional Differences ◽  
Medicago Sativa L

Rare cold-inducible 2/plasma membrane protein 3 (RCI2/PMP3) genes are ubiquitous in plants and belong to a multigene family whose members respond to a variety of abiotic stresses by regulating ion homeostasis and stabilizing membranes, thus preventing damage. In this study, the expression of MsRCI2A, MsRCI2B, and MsRCI2C under high-salinity, alkali and ABA treatments was analyzed. The results showed that the expression of MsRCI2A, MsRCI2B, and MsRCI2C in alfalfa (Medicago sativa L.) was induced by salt, alkali and ABA treatments, but there were differences between MsRCI2 gene expression under different treatments. We investigated the functional differences in the MsRCI2A, MsRCI2B, and MsRCI2C proteins in alfalfa (Medicago sativa L.) by generating transgenic alfalfa plants that ectopically expressed these MsRCI2s under the control of the CaMV35S promoter. The MsRCI2A/B/C-overexpressing plants exhibited different degrees of improved phenotypes under high-salinity stress (200 mmol.L–1 NaCl) and weak alkali stress (100 mmol.L–1 NaHCO3, pH 8.5). Salinity stress had a more significant impact on alfalfa than alkali stress. Overexpression of MsRCI2s in alfalfa caused the same physiological response to salt stress. However, in response to alkali stress, the three proteins encoded by MsRCI2s exhibited functional differences, which were determined not only by their different expression regulation but also by the differences in their regulatory relationship with MsRCI2s or H+-ATPase.

Silicon improves physiological, biochemical, and morphological adaptations of alfalfa (Medicago sativa L.) during salinity stress

Symbiosis ◽  
2021 ◽  
Author(s):  
Ahmed El Moukhtari ◽  
Pierre Carol ◽  
Mohammed Mouradi ◽  
Arnould Savoure ◽  
Mohamed Farissi
Keyword(s):  
Medicago Sativa ◽  
Salinity Stress ◽  
Morphological Adaptations ◽  
Medicago Sativa L

Seed priming with brassinolide improves lucerne (Medicago sativa L.) seed germination and seedling growth in relation to physiological changes under salinity stress

2007 ◽  
Vol 58 (8) ◽  
pp. 811 ◽  
Author(s):  
S. Zhang ◽  
J. Hu ◽  
Y. Zhang ◽  
X. J. Xie ◽  
Allen Knapp
Keyword(s):  
Salt Stress ◽  
Medicago Sativa ◽  
Salinity Stress ◽  
Seedling Growth ◽  
Dry Weight ◽  
Seed Priming ◽  
Germination Percentage ◽  
Shoot Dry Weight ◽  
Medicago Sativa L ◽  
High Level

Salt stress is an important constraint to lucerne (Medicago sativa L.) production in many parts of the world. Seeds of 3 lucerne varieties, cvv. Victoria, Golden Empress, and Victor, were used to investigate the effects of seed priming with 5 µm/L brassinolide on germination and seedling growth under a high level of salt stress (13.6 dS/m NaCl solution). The results showed that germination percentage, germination index, and vigour index of lucerne seeds primed with brassinolide were significantly higher than those of the non-primed seeds under salinity stress in each variety. Seed priming with brassinolide significantly increased the shoot fresh weight, shoot dry weight, and root dry weight in 2 varieties, and significantly increased the root length and root vigour in each variety. It also significantly increased the activities of antioxidant enzymes, peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT), in Victoria and Victor seedlings. During seedling growth, the primed seeds significantly reduced the malondialdehyde (MDA) accumulation. This suggests that priming lucerne seed with brassinolide at a suitable concentration can improve germination and seedling growth under high-saline soils.

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