Genotype-Dependent Differential Responses of Three Forage Species to Calcium Supplement in Saline Conditions

Sima, N. A. Khosh Kholgh; Askari, Hossein; Mirzaei, Hossein Hadavand; Pessarakli, Mohammad

doi:10.1080/01904160802714979

Cited by 17 publications

(6 citation statements)

References 30 publications

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“…However, the GBs function only at relatively high levels in some plants under stress conditions. It has been shown that the synthesis and/or accumulation of GB in perennial ryegrass is relatively lower even under salinity stress conditions (Sima et al, 2009). Enhanced salt tolerance has been achieved by genetic engineering of GB synthesis with betaine aldehyde dehydrogenase and choline mono-oxygenase gene in perennial ryegrass (Bao et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass

Hu¹,

Hu²,

Zhang³

et al. 2012

J. Amer. Soc. Hort. Sci.

125

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Salinity stress may involve the accumulation of glycine betaine (GB). The objective of this study was to examine whether exogenous GB would ameliorate the detrimental effect of salinity stress on perennial ryegrass (Lolium perenne). The grass was subjected to two salinity levels (0 and 250 mm NaCl) and three GB levels (0, 20, and 50 mm). Salinity resulted in a remarkable decrease in vertical shoot growth rate (VSGR), shoot and root fresh weight, relative water content (RWC), relative transpiration rate (Tr), and chlorophyll (Chl) content, superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) activities. Plants subjected to salt exhibited an increase in leaf electrolyte leakage (EL), lipid peroxidation (MDA), and proline content. Application of GB reduced EL, MDA, and proline content in salt-stressed plants. Perennial ryegrass subjected to salt stress plus GB had a greater level of VSGR, RWC, relative Tr, Chl content, and activities of SOD, CAT, and APX when compared with salt-stressed without GB. Salt stress increased Na+ and decreased K+ content, which resulted in a higher Na+/K+ ratio in perennial ryegrass. Application of 20 mm GB suppressed Na+ accumulation, whereas the K+ content was significantly increased in shoot, which led to a higher K+/Na+ ratio under saline conditions. These results suggested that GB-enhanced salt tolerance in perennial ryegrass was mainly related to the elevated SOD, CAT, and APX activity and alleviation of cell membrane damage by reducing oxidation of membrane lipid and improving the ion homeostasis under salt stress.

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Section: Discussionmentioning

confidence: 99%

Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass

Hu¹,

Hu²,

Zhang³

et al. 2012

J. Amer. Soc. Hort. Sci.

125

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“…plants under stress condition. It has been showed that the accumulation and/or synthesis of GB in many plants is comparatively lower under salt stress [41]. In the present study, exogenous application of GB overcome the unfavorable effects of salt stress and may be practical access to enhance salt tolerance at bean plants.…”

Section: Ilns Biostimulation and Overcoming The Abiotic Stresses In Pmentioning

confidence: 57%

Mitigation of Salinity Stress Effects on Growth, Physio-Chemical Parameters and Yield of Snapbean (<i>Phaseolus vulgaris</i> L.) by Exogenous Application of Glycine Betaine

Desoky

Ibrahim

Merwad

2019

ILNS

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Pots experiment was carried out during season 2017 at greenhouse of the Agric. Bot. Dep., Fac. of Agric., Zagazig Univ., Egypt to evaluate the effect of glycine betaine (GB) application under salinity stress (50 and100 mM NaCl) on growth, physio-chemical analysis and yield of snap bean cv. Bronco. A complete randomized blocks design was used in this search with three replications. Growth parameters, chlorophyll content and green pod yield were significantly decreased with subjecting plants to NaCl. However foliar application of GB detoxified the stress generated by NaCl and significantly improved the above mention parameters. Salinity stress increased the electrolyte leakage (EL) and decreased membrane stability index (MSI) and relative water content (RWC). While foliar application of GB was improved MSI and RWC and minimized EL. Proline content and antioxidant enzymes significantly increased in the response to NaCl stress as well as GB application.

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“…Lolium perenne can accumulate exogenously applied GB under non-stress conditions [5,11,24], and accumulation increases in response to salinity [11,24]. There are no reports of GB accumulation in L. multiflorum.…”

Section: Glycinebetaine Concentrations Do Not Increase In Response Tomentioning

confidence: 99%

Glycinebetaine Enhances Osmotic Adjustment of Ryegrass under Cold Temperatures

Mickelbart

Boine

2020

Agronomy

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Perennial (Lolium perenne L.) and annual (L. multiflorum) ryegrass are important species for landscape (e.g., turf) and agricultural (e.g., pasture systems) uses. Abiotic stresses limit the survival, growth, and/or appearance of these species. The synthesis and accumulation of quaternary ammonium compounds (QACs) such as glycinebetaine (GB) are an adaptive response to abiotic environmental stresses in some species. Both L. perenne and L. multiflorum are GB-accumulating species, and exogenous application of GB may enhance growth under less-than-optimal environmental conditions. We tested the effects of exogenous application of GB on growth and water relations of annual and perennial ryegrass growing under temperatures at the lower limits of their optimal growth. Osmotic stress resulted in increased GB accumulation in L. perenne, but exposure to cold temperatures did not result in increased GB accumulation in either species. Both species accumulated higher concentrations of GB in leaf and stem tissues when exogenous GB was supplied, regardless of growing temperature. Exogenous GB did contribute to lower osmotic potential in both species, but did not affect relative water content, although succulence was higher in some cases. Overall, exogenous GB did not affect growth under optimal growing temperatures, but did enhance growth of L. perenne growing under low temperatures.

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Genotype-Dependent Differential Responses of Three Forage Species to Calcium Supplement in Saline Conditions

Cited by 17 publications

References 30 publications

Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass

Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass

Mitigation of Salinity Stress Effects on Growth, Physio-Chemical Parameters and Yield of Snapbean (<i>Phaseolus vulgaris</i> L.) by Exogenous Application of Glycine Betaine

Glycinebetaine Enhances Osmotic Adjustment of Ryegrass under Cold Temperatures

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