Salt-tolerant mutants in glycophytic salinity response (GSR) genes in Catharanthus roseus

P, S; Luthra, Rajesh; Kumar, Sushil

doi:10.1007/s00122-002-1026-x

Cited by 49 publications

(21 citation statements)

References 42 publications

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“…Similarly, Orabi and Abdelhamid (2014) reported the effect of α-Toc on proline content in the leaves of faba bean plants grown under seawater salinity. These results indicated that high proline is an indicator of intense stress (Ain-Lhout et al, 2001;Rai et al, 2003), while others are of the view that proline at high concentration acts as a osmoprotectant (Taie et al, 2013).…”

Section: Discussionmentioning

confidence: 97%

Foliar applications of alpha-tocopherol improves the composition of fresh pods of Vigna radiata subjected to water deficiency

Sadiq¹,

Akram²,

Ashraf³

2017

Turk J Bot

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Alpha-tocopherol (α-Toc), so-called vitamin E, is a low molecular weight lipophilic antioxidant that generally protects plants from stress-induced cellular oxidation. It is well known that exogenously applied α-Toc is effective in improving plant growth and developmental processes under adverse environmental conditions. The current study was performed to determine the best concentration of α-Toc [0 (no spray), 100, 200, and 300 mg L -1 ] that could improve the biological yield and chemical constituents of fresh green pods of mung bean (Vigna radiata) and hence their quality under varying water regimes. Foliar spray of α-Toc significantly improved total soluble proteins, chlorophyll a and b, total soluble sugars, proline, phenolics, total free amino acids, nonreducing sugars, and activities of SOD, POD, and CAT under water stress conditions. However, no prominent change was observed in reducing sugars and biological yield due to externally applied α-Toc in either mung bean cultivar subjected to either water regime. Both mung bean cultivars (Cyclone 7008 and Cyclone 8009) showed similar behavior in chlorophyll a and b, while cv. Cyclone 7008 was superior with respect to the concentrations of total soluble sugars and total free amino acids, whereas Cyclone 8009 was better in activities of CAT, SOD, and POD. Overall, externally applied 200 and 300 mg L -1 α-Toc considerably enhanced the activities of antioxidant enzymes (SOD, POD and CAT), chlorophyll a and b, proline, and total phenolic contents in both mung bean cultivars.

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Section: Discussionmentioning

confidence: 97%

Foliar applications of alpha-tocopherol improves the composition of fresh pods of Vigna radiata subjected to water deficiency

Sadiq¹,

Akram²,

Ashraf³

2017

Turk J Bot

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“…Muhammad (2013) showed that the application of K under saline conditions increased proline and total free amino acid concentrations in two maize hybrids. Some researchers have reported that a high proline concentration is a sign of stress (Rai et al, 2003), while others have suggested that high concentrations of proline act as a solute for intracellular osmotic adjustment (Silveira et al, 2003). Maqsood et al (2008) stated that a large number of plant species accumulate proline in response to salinity stress in order to overcome such stress.…”

Section: Statistical Analysis Of the Datamentioning

confidence: 98%

Potassium fertiliser enhances the salt-tolerance of common bean (Phaseolus vulgarisL.)

Dawood

Abdelhamid

Schmidhalter

2014

The Journal of Horticultural Science and Biotechnology

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“…Somaclonal variants (Tal, 1990(Tal, , 1993(Tal, , 1994 Induced mutation (Rai et al 2003) Screening tool (Arzani and Mirodjagh 1999) …”

Section: In Vitromentioning

confidence: 99%

Improving salinity tolerance in crop plants: a biotechnological view

Arzani

2008

In Vitro Cell.Dev.Biol.-Plant

215

132

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Salinity limits the production capabilities of agricultural soils in large areas of the world. Both breeding and screening germplasm for salt tolerance encounter the following limitations: (a) different phenotypic responses of plants at different growth stages, (b) different physiological mechanisms, (c) complicated genotype × environment interactions, and (d) variability of the salt-affected field in its chemical and physical soil composition. Plant molecular and physiological traits provide the bases for efficient germplasm screening procedures through traditional breeding, molecular breeding, and transgenic approaches. However, the quantitative nature of salinity stress tolerance and the problems associated with developing appropriate and replicable testing environments make it difficult to distinguish salt-tolerant lines from sensitive lines. In order to develop more efficient screening procedures for germplasm evaluation and improvement of salt tolerance, implementation of a rapid and reliable screening procedure is essential. Field selection for salinity tolerance is a laborious task; therefore, plant breeders are seeking reliable ways to assess the salt tolerance of plant germplasm. Salt tolerance in several plant species may operate at the cellular level, and glycophytes are believed to have special cellular mechanisms for salt tolerance. Ion exclusion, ion sequestration, osmotic adjustment, macromolecule protection, and membrane transport system adaptation to saline environments are important strategies that may confer salt tolerance to plants. Cell and tissue culture techniques have been used to obtain salt tolerant plants employing two in vitro culture approaches. The first approach is selection of mutant cell lines from cultured cells and plant regeneration from such cells (somaclones). In vitro screening of plant germplasm for salt tolerance is the second approach, and a successful employment of this method in durum wheat is presented here. Doubled haploid lines derived from pollen culture of F 1 hybrids of salt-tolerant parents are promising tools to further improve salt tolerance of plant cultivars. Enhancement of resistance against both hyper-osmotic stress and ion toxicity may also be achieved via molecular breeding of salt-tolerant plants using either molecular markers or genetic engineering.

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Salt-tolerant mutants in glycophytic salinity response (GSR) genes in Catharanthus roseus

Cited by 49 publications

References 42 publications

Foliar applications of alpha-tocopherol improves the composition of fresh pods of Vigna radiata subjected to water deficiency

Foliar applications of alpha-tocopherol improves the composition of fresh pods of Vigna radiata subjected to water deficiency

Potassium fertiliser enhances the salt-tolerance of common bean (Phaseolus vulgarisL.)

Improving salinity tolerance in crop plants: a biotechnological view

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