Salinity Tolerance of Seashore Paspalum Ecotypes: Shoot Growth Responses and Criteria

Lee, Geung–Joo; Duncan, R. R.; Carrow, Robert N.

doi:10.21273/hortsci.39.5.1138

Cited by 64 publications

(46 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The objectives of the present study were to examine genotypic variations in salt tolerance in seashore paspalum, to characterize physiological effects of choline on salt tolerance, and to determine how GB and major lipids (glycolipids and phospholipids) affected by choline may be involved in choline regulation of salt tolerance. The two genotypes, Adalayd and Sea Isle 2000, were selected to represent genotypic variations in salt tolerance in this study based on our preliminary genotype screening of five genotypes (Adalayd, Excalibur, Temple2, Sea spray, and Sea Isle 2000), and previous reports by others, which reported that Adalayd was relatively more salt sensitive and Sea Isle 2000 was salt tolerant (Lee, Carrow, & Duncan, ; Lee, Carrow, & Duncan, ; Lee, Duncan, & Carrow, ). SeaIsle 2000 was selected as a mutation derived from the parental cultivar Adalayd (Duncan, ) and was specifically developed for high salt tolerance.…”

Section: Introductionmentioning

confidence: 99%

Up‐regulation of lipid metabolism and glycine betaine synthesis are associated with choline‐induced salt tolerance in halophytic seashore paspalum

Gao

Zhang

et al. 2019

Plant Cell & Environment

View full text Add to dashboard Cite

Choline may affect salt tolerance by regulating lipid and glycine betaine (GB) metabolism. This study was conducted to determine whether alteration of lipid profiles and GB metabolism may contribute to choline regulation and genotypic variations in salt tolerance in a halophytic grass, seashore paspalum (Paspalum vaginatum). Plants of Adalayd and Sea Isle 2000 were subjected to salt stress (200‐mM NaCl) with or without foliar application of choline chloride (1 mM). Genotypic variations in salt tolerance and promotive effects of choline application on salt tolerance were associated with both the up‐regulation of lipid metabolism and GB synthesis. The genotypic variations in salt tolerance associated with lipid metabolism were reflected by the differential accumulation of phosphatidylcholine and phosphatidylethanolamine between Adalayd and Sea Isle 2000. Choline‐induced salt tolerance was associated with of the increase in digalactosyl diacylglycerol (DGDG) content including DGDG (36:4 and 36:6) in both cultivars of seashore paspalum and enhanced synthesis of phosphatidylinositol (34:2, 36:5, and 36:2) and phosphatidic acid (34:2, 34:1, and 36:5), as well as increases in the ratio of digalactosyl diacylglycerol: monogalactosyl diacylglycerol (DGDG:MGDG) in salt‐tolerant Sea Isle 2000. Choline regulation of salt tolerance may be due to the alteration in lipid metabolism in this halophytic grass species.

show abstract

Section: Introductionmentioning

confidence: 99%

Up‐regulation of lipid metabolism and glycine betaine synthesis are associated with choline‐induced salt tolerance in halophytic seashore paspalum

Gao

Zhang

et al. 2019

Plant Cell & Environment

View full text Add to dashboard Cite

show abstract

“…Significant variation in salt tolerance exists in seashore paspalum accessions (Lee et al, 2004). Lee et al (2008) demonstrated that nine salt tolerant and sensitive genotypes all accumulate proline and Glycine betaine with increasing salt concentrations which suggests that seashore paspalum uses osmotic adjustment in response to added salt concentrations.…”

mentioning

confidence: 99%

Development and Characterization of Seashore Paspalum SSR Markers

et al. 2013

View full text Add to dashboard Cite

2679ReseaRch D evelopment of genetic tools for warm-season turfgrasses is in its infancy and there is limited reference to marker-trait associations in warm-season turfgrasses. Heckart et al. (2010) reported that sethoxydim resistance (an herbicide) is conferred by a single nucleotide polymorphism in the acetyl coenzyme A carboxylase (ACCase) gene in two seashore paspalum mutants generated by tissue culture. The warm-season turfgrass species with the largest number of molecular tools are bermudagrass and zoysiagrass which have a collection of SSRs (Cai et al., 2005;Harris-Shultz et al., 2010;Harris-Shultz et al., 2011b;Kamps et al., 2011) and a genetic map (Bethel et al., 2006;Cai et al., 2005;Harris-Shultz et al., 2010). Twentyfour polymorphic SSRs were identified from sequencing species of genus Eremochloa (Harris-Shultz et al., 2011a), to which centipedegrass belongs. At present, the other warm-season turfgrasses, Saint Augustine grass, seashore paspalum, and bahiagrass species lag ABSTRACT The increasing use of secondary water sources for irrigation, which is highly linked to salinization, creates a demand for salt tolerant turf. Seashore paspalum (Paspalum vaginatum Swartz) is a warm-season turfgrass that survives in sand dunes along coastal sites, brackish ponds, and in estuaries. Some seashore paspalum accessions and cultivars are far more salt tolerant than others. To identify genetic regions that are associated with salt tolerance, molecular tools must be developed. In this study, genomic libraries, enriched for microsatellites, were generated using the salt tolerant accession HI33. High throughput sequencing and subsequent assembling of these libraries resulted in 18,967 contigs and 158,595 singletons. The number of simple sequence repeats (SSr) detected in contigs and in singletons was 3511 and 31,949, respectively, and the number of primer sets designed within each group was 937 and 1667. A total of 80 SSr markers, including five markers previously developed, were used to assess genetic relationships among 18 Paspalum accessions. Two major clusters were identified from the seashore paspalum accessions. Accessions that are likely polyploids, all with coarse leaves, grouped together whereas accessions with fine-to mid-fine leaves formed a second group. Furthermore, 33 seashore paspalum SSr markers cross-amplified in bahiagrass (Paspalum notatum Flugge) and these markers can be a useful tool in this species.

show abstract

“…This grass species is highly salt tolerant [22] and was considered as an ideal candidate plant species for vegetative cover establishment in red mud disposal sites. Stolon segments (ca.…”

Section: The Test Plantmentioning

confidence: 99%

Capping hazardous red mud using acidic soil with an embedded layer of zeolite for plant growth

Ying

Lin

2014

Environmental Technology

View full text Add to dashboard Cite

A nearly three-year microcosm experiment was conducted to test the effectiveness of capping red mud using acidic soil with an embedded layer of zeolite in sustaining the growth of a grass species. This 'sandwich-structured' design allowed self-sustaining growth of the plants under rain-fed conditions no matter whether the underlying red mud was neutralized or not. During the initial stage, the plants grew better when the red mud was not neutralized with MgCl2 probably due to pH rise in the root zone. Neutralization of red mud led to salinization and pH decrease in the root zone. However, the difference in plant growth performance between these scenarios became less remarkable over time due to gradual improvement of soil conditions in the neutralized scenarios. Continuous leaching of soluble salts and alkali by rainwater extended the root zone to the red mud layer. As a result of vegetative production, soil organic matter rapidly accumulated. This, combined with increase in pH and decrease in salinity, markedly facilitated microbial activities and consequently improved the supply of nutrients. This study provides abasis for field-scale experimental design that will have implications for effectively establishing vegetative cover in red mud disposal sites to control dust hazards.

show abstract

Salinity Tolerance of Seashore Paspalum Ecotypes: Shoot Growth Responses and Criteria

Cited by 64 publications

References 22 publications

Up‐regulation of lipid metabolism and glycine betaine synthesis are associated with choline‐induced salt tolerance in halophytic seashore paspalum

Up‐regulation of lipid metabolism and glycine betaine synthesis are associated with choline‐induced salt tolerance in halophytic seashore paspalum

Development and Characterization of Seashore Paspalum SSR Markers

Capping hazardous red mud using acidic soil with an embedded layer of zeolite for plant growth

Contact Info

Product

Resources

About