Growth and physiological adaptation of whole plants and cultured cells from a halophyte turf grass under salt stress

Tada, Yuichi; Komatsubara, Shiho; Kurusu, Takamitsu

doi:10.1093/aobpla/plu041

Cited by 29 publications

(31 citation statements)

References 25 publications

(84 reference statements)

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“…The salt tolerance of halophytes is typically examined after long-term exposure to different NaCl concentrations ( Tada et al, 2014 ). However, plant responses to salinity may be determined by rapid perception of salt shock that occurs within hours ( Ellouzi et al, 2011 ; Wang et al, 2012 ).…”

Section: Possible Function Of Initial Ros Production and Downstream Smentioning

confidence: 99%

Plant signaling networks involving Ca2+ and Rboh/Nox-mediated ROS production under salinity stress

2015

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Salinity stress, which induces both ionic and osmotic damage, impairs plant growth and causes severe reductions in crop yield. Plants are equipped with defense responses against salinity stress such as regulation of ion transport including Na+ and K+, accumulation of compatible solutes and stress-related gene expression. The initial Ca2+ influx mediated by plasma membrane ion channels has been suggested to be crucial for the adaptive signaling. NADPH oxidase (Nox)-mediated production of reactive oxygen species (ROS) has also been suggested to play crucial roles in regulating adaptation to salinity stress in several plant species including halophytes. Respiratory burst oxidase homolog (Rboh) proteins show the ROS-producing Nox activity, which are synergistically activated by the binding of Ca2+ to EF-hand motifs as well as Ca2+-dependent phosphorylation. We herein review molecular identity, structural features and roles of the Ca2+-permeable channels involved in early salinity and osmotic signaling, and comparatively discuss the interrelationships among spatiotemporal dynamic changes in cytosolic concentrations of free Ca2+, Rboh-mediated ROS production, and downstream signaling events during salinity adaptation in planta.

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Section: Possible Function Of Initial Ros Production and Downstream Smentioning

confidence: 99%

Plant signaling networks involving Ca2+ and Rboh/Nox-mediated ROS production under salinity stress

2015

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“…Le Houérou ( 1993 ) mentioned that there are 5000–6000 halophytic species in the world. Broad diversity in salt tolerance abilities in halophytes have been reported, with the tolerable salt concentration ranging from 200 to 1500 mM (Flowers and Colmer, 2008 ; Tada et al, 2014 ). Due to the need to cultivate marginal lands to increase food production, elucidating salt tolerance mechanisms in halophytes is important.…”

Section: Introductionmentioning

confidence: 99%

“…For osmotic adjustment, S. virginicus accumulates compatible solutes such as glycinebetaine, proline and sugars depending on salinity (Marcum and Murdoch, 1992 ). Recently, we isolated a genotype of S. virginicus from a seashore in Japan to characterize its remarkable tolerance of salinity up to 1.5 M NaCl (Tada et al, 2014 ). Compared to other genotypes in the USA, South Africa and Egypt, the Japanese genotype represented higher salt tolerance (Tada et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we isolated a genotype of S. virginicus from a seashore in Japan to characterize its remarkable tolerance of salinity up to 1.5 M NaCl (Tada et al, 2014 ). Compared to other genotypes in the USA, South Africa and Egypt, the Japanese genotype represented higher salt tolerance (Tada et al, 2014 ). The Japanese genotype shows a distinctive relationship between regulation of Na + , Cl − , and K + influx/efflux and proline accumulation during growth of both whole plants and cultured cells (Tada et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

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Comprehensive analysis of transcriptome response to salinity stress in the halophytic turf grass Sporobolus virginicus

et al. 2015

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The turf grass Sporobolus virginicus is halophyte and has high salinity tolerance. To investigate the molecular basis of its remarkable tolerance, we performed Illumina high-throughput RNA sequencing on roots and shoots of a S. virginicus genotype under normal and saline conditions. The 130 million short reads were assembled into 444,242 unigenes. A comparative analysis of the transcriptome with rice and Arabidopsis transcriptome revealed six turf grass-specific unigenes encoding transcription factors. Interestingly, all of them showed root specific expression and five of them encode bZIP type transcription factors. Another remarkable transcriptional feature of S. virginicus was activation of specific pathways under salinity stress. Pathway enrichment analysis suggested transcriptional activation of amino acid, pyruvate, and phospholipid metabolism. Up-regulation of several unigenes, previously shown to respond to salt stress in other halophytes was also observed. Gene Ontology enrichment analysis revealed that unigenes assigned as proteins in response to water stress, such as dehydrin and aquaporin, and transporters such as cation, amino acid, and citrate transporters, and H+-ATPase, were up-regulated in both shoots and roots under salinity. A correspondence analysis of the enriched pathways in turf grass cells, but not in rice cells, revealed two groups of unigenes similarly up-regulated in the turf grass in response to salt stress; one of the groups, showing excessive up-regulation under salinity, included unigenes homologos to salinity responsive genes in other halophytes. Thus, the present study identified candidate genes involved in salt tolerance of S. virginicus. This genetic resource should be valuable for understanding the mechanisms underlying high salt tolerance in S. virginicus. This information can also provide insight into salt tolerance in other halophytes.

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“…Cope the salinity affect, plants adapted various changes in morphological and physiological attributes [11,12] Synthesis and gathering of compatible solutes (Osmolytes/metabolites) is common strategy in plants to protect them from environmental stresses [13]. The gathering of osmolytes help to overcome the oxidative damage triggered by free radicals produced as result of high salt stress and also sustain damage of subcellular structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of Glycine Betaine on Morphological and Physiological Attributes of Tomato (<i>Lycopersicon esculentum</i> L.) Cultivars under Saline Conditions

Shahzad¹,

Abbasi²,

Shahzad³

et al. 2019

JHPR

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Tomato (Lycopersiconesculentum L.) is a long duration crop belongs to a family Solanaceae. In case of vegetables, tomato is a second major crop, cultivated wide range throughout the world. Although, tomato is moderate sensitive to salinity yet for salinity tolerance more attention is required. More than 30% cultivated land all over the world severely affected by the salinity. In this scenario, experiment was designed to investigate various morphological and physiological aspects of tomato under various salinity levels; different levels of exogenous glycine betaine applications. Study was conducted to reveal the salt tolerance in tomato genotypes. Experiment was performed under controlled condition in the growth chamber of the IHS, UAF. Different concentrations of sodium chloride salt (0, 1.5 and 3 dS m-1) was used for salinity levels. Medium size plastic pots were used for sowing of tomato and sand was used as growing medium. Hoagland solution was applied for nourishment of tomato seedlings. Salinity was applied on 3-4 leaf stage. Then examined the effect of glycine betaine (0, 5, 10 and 15mM) for salt tolerance on tomato cultivars. Data of various attributes was collected and analyzed statistically by appropriate statistical package. Results revealed that tomato growth was negatively affected by the salinity. Morphological attributes and physiological attributes reduced in response to salinity except electrolyte leakage which amplified in salt stress. Exogenous application of glycine betaine promotes the tolerance against the salinity in the tomato genotypes and enhance growth.

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Growth and physiological adaptation of whole plants and cultured cells from a halophyte turf grass under salt stress

Cited by 29 publications

References 25 publications

Plant signaling networks involving Ca2+ and Rboh/Nox-mediated ROS production under salinity stress

Plant signaling networks involving Ca2+ and Rboh/Nox-mediated ROS production under salinity stress

Comprehensive analysis of transcriptome response to salinity stress in the halophytic turf grass Sporobolus virginicus

Effect of Glycine Betaine on Morphological and Physiological Attributes of Tomato (<i>Lycopersicon esculentum</i> L.) Cultivars under Saline Conditions

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