Oxidative damage and antioxidant defenses as potential indicators of salt-tolerant Cenchrus ciliaris L. genotypes

Castelli, S. Lanza; Grunberg, Karina; Muñoz, Nacira; Griffa, S.; Colomba, E. López; Ribotta, A.; Biderbost, E.; Luna, Claudia Verónica

doi:10.1016/j.flora.2010.04.004

Cited by 25 publications

(23 citation statements)

References 38 publications

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“…The highest DW was produced by accession 49 and the lowest by accession 23. Similar studies were conducted on other grass species such as Bermuda grass (Rodríguez and Miller, 2000), Catharanthus roseus (Jaleel et al, 2008) and C. ciliaris (Lanza Castelli et al, 2010) and showed that the plant growth, tiller, number of leaves and dry weight decreased under salt stress. Ions of sodium (Na + ) and chlorine (Cl − ) (>40 mmol/L) can be toxic to plants because they can create imbalance in plant nutrition due to decreased nutrient uptake and translocation to new shoots (Munns et al, 2000; Tester and Davenport, 2003; Munns and Tester, 2008).…”

Section: Discussionsupporting

confidence: 54%

“…However, salt-sensitive genotypes showed more reduction in their biomass as compared to tolerant genotypes. Lanza Castelli et al (2010) demonstrated a significant reduction (50–70%) in height and shoot fresh weight at 30 dS m −1 in Texas and Biloela accessions. In the present study, the accessions 49, 127, 129, 30, 38, were the least affected by increasing salinity.…”

Section: Discussionmentioning

confidence: 96%

“…In a study of salt stress on buffelgrass and its effects on productivity decline; Lanza Castelli et al (2010) has found that C. ciliaris accession, Texas 4464, is susceptible to salt stress at 300 mM NaCl concentrations at the seedling stage, while Americana showed tolerance against salinity. The fresh weight, root length, and plant height of these accessions were least affected by salinity.…”

Section: Introductionmentioning

confidence: 99%

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Genotypic Variation for Salinity Tolerance in Cenchrus ciliaris L.

Al-Dakheel

Hussain

2016

Front. Plant Sci.

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Scarcity of irrigation water and increasing soil salinization has threatened the sustainability of forage production in arid and semi-arid region around the globe. Introduction of salt-tolerant perennial species is a promising alternative to overcome forage deficit to meet future livestock needs in salt-affected areas. This study presents the results of a salinity tolerance screening trial which was carried out in plastic pots buried in the open field for 160 buffelgrass (Cenchrus ciliaris L.) accessions for three consecutive years (2003–2005). The plastic pots were filled with sand, organic, and peat moss mix and were irrigated with four different quality water (EC 0, 10, 15, and 20 dS m−1). The results indicate that the average annual dry weights (DW) were in the range from 122.5 to 148.9 g/pot in control; 96.4–133.8 g/pot at 10 dS m−1; 65.6–80.4 g/pot at 15 dS m−1, and 55.4–65.6 g/pot at 20 dS m−1. The highest DW (148.9 g/pot) was found with accession 49 and the lowest with accession 23. Principle component analysis shows that PC-1 contributed 81.8% of the total variability, while PC-2 depicted 11.7% of the total variation among C. ciliaris accessions for DW. Hierarchical cluster analysis revealed that a number of accessions collected from diverse regions could be grouped into a single cluster. Accessions 3, 133, 159, 30, 23, 142, 141, 95, 49, 129, 124, and 127 were stable, salt tolerant, and produced good dry biomass yield. These accessions demonstrate sufficient salinity tolerance potential for promotion in marginal lands to enhance farm productivity and reduce rural poverty.

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Genotypic Variation for Salinity Tolerance in Cenchrus ciliaris L.

Al-Dakheel

Hussain

2016

Front. Plant Sci.

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“…According to results obtained by previous works of our team (Lanza Castelli, 2006; Griffa, 2010; Lanza Castelli et al. , 2010), after 17 days to reach the final concentration, the following characters were measured in the 64‐day‐old seedlings: total fresh weight of seedling (TFW), fresh weight of aerial part (FWA), fresh weight of root part (FWR), seedling height (SH), root length (RL), number of tillers (NT), and number of leaves (NL).…”

Section: Methodsmentioning

confidence: 76%

Evaluation seedling biomass and its components as selection criteria for improving salt tolerance in Buffel grass genotypes

Griffa¹,

Ribotta²,

Colomba³

et al. 2010

Grass and Forage Science

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Damage produced by salt stress (300 mM M NaCl) under hydroponic greenhouse conditions in seedlings of eight Buffel grass (Cenchrus ciliaris L. Syn. Pennisetum ciliare Link) genotypes was estimated through different component characters of total fresh weight damage (DTFW). Coefficient of genetic determination (CGD) was estimated for each character as well as their direct and indirect contribution to damage to total fresh weight, considered as biomass production loss. Americana and Biloela were the most salt-tolerant cultivars, whereas sexual line and Texas 4464 were the genotypes most susceptible to salt stress. Damage to fresh weight of aerial part (DFWA) was the only component with a direct effect on DTFW and with a high CGD. Therefore, DFWA could be used in breeding programmes as an indirect selection criterion for tolerance and better productivity.

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“…There was no difference between salt-tolerant wheat S-24 and salt-sensitive wheat MH-97 in shoot flesh weight (Athar et al 2008). Castelli et al (2010) showed that the fresh weight in morphological traits of salt-tolerant genotypes (Americana and Biloela) was lower than in less salt-tolerant genotypes (Texas and Sexual). It could be concluded that the plant weight is not a reason for salt tolerance.…”

Section: Discussionmentioning

confidence: 89%

Exogenous nitric oxide protects against salt-induced oxidative stress in the leaves from two genotypes of tomato (Lycopersicom esculentum Mill.)

Zhu

Zhang

et al. 2010

Acta Physiol Plant

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Nitric oxide (NO) has emerged as a key molecule involved in many physiological events in plants. To characterize roles of NO in tolerance of tomato (Lycopersicom esculentum Mill.) to salt stress, the protective effects of NO against salt-induced oxidative stress in the leaves of tomato cultivar Hufan1480 (salt-tolerant) and Hufan2496 (salt-sensitive) were evaluated. Under salt stress, Hufan1480 showed higher biomass accumulation, and less oxidative damage when compared with the Hufan2496. Application of exogenous sodium nitroprusside, a NO donor, dramatically alleviated growth suppression induced by salt stress in two tomato ecotypes, reflected by decreased malondialdehyde and O 2 Á-production. Furthermore, the antioxidant enzymes superoxide dismutase, guaiacol peroxidase, catalase and ascorbate peroxidase, the antioxidant metabolites ascorbate and reduced glutathione, and the osmosis molecules proline and soluble sugar were increased in both ecotypes in the presence of NO under salt stress. Therefore, the protective effect of NO against salt-induced oxidative damages in tomato seedlings is most likely mediated through stimulation of antioxidant system.

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Oxidative damage and antioxidant defenses as potential indicators of salt-tolerant Cenchrus ciliaris L. genotypes

Cited by 25 publications

References 38 publications

Genotypic Variation for Salinity Tolerance in Cenchrus ciliaris L.

Genotypic Variation for Salinity Tolerance in Cenchrus ciliaris L.

Evaluation seedling biomass and its components as selection criteria for improving salt tolerance in Buffel grass genotypes

Exogenous nitric oxide protects against salt-induced oxidative stress in the leaves from two genotypes of tomato (Lycopersicom esculentum Mill.)

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