Light-Dark Changes in Proline Content of Barley Leaves under Salt Stress

Fedina, I.; Georgieva, Katya; Grigorova, Irena

doi:10.1023/a:1015175802847

Cited by 36 publications

(17 citation statements)

References 21 publications

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“…There exist a lot of relationships between proline accumulation and resistance to stress. In researching various plants, it is observed that proline has important role in osmosis balance (Fedina et al, 2002). Also, plants are faced with osmotic stress because they accumulate non-important molecules such as sugar and store many percent of them in their cytoplast.…”

Section: Resultsmentioning

confidence: 99%

The studying effect of drought stress on germination, proline, sugar, lipid, protein and chlorophyll content in purslane (Portulaca oleracea L.) leaves

Rahdari¹,

Hosseini²,

Tavakoli³

2012

J. Med. Plants Res.

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Purslane (Portulaca oleracea L.) is one of the valuable medical plants. Drought also is one of the most important environment stresses that influences metabolism and growth of plant. The studying of physiological plant response rather than water stress can be influential equipment for understanding drought resistance mechanisms. In this study, the drought stress effects on germination and physiological characteristic of the medical plant (purslane) were studied. Drought imposed on polyethylene glycol (PEG) seedlings and experiments were done in completely random model framework, with 3 replications. Polyethylene glycol stress was in seven levels involving blank (distilled water),-0.1,-0.2,-0.4,-0.6,-0.8 and-1 MPa. In relation to germination, meaningful difference was not observed between blank and the different levels (P<0.01); and the least rate of germination in stress level was-0.4 MPa) and the highest rate of germination in stress level was-0.2 MPa). Meaningful increase of proline and sugar synchronized with PEG concentration was observed in statistical level (P<0.01) with meaningful difference. In this, blank had the least rates and stress level of-1 MPa and the highest proline and sugar rates. Lipid content in purslane leaves with increasing stress level was decreased. In the highest lipid rate in stress level (-0.2 MPa) and the least concentration in stress level (-1 MPa), it was observed that this difference in P<0.01 was meaningful. The concentration of leave proteins with meaningful decrease (P<0.01) had the highest protein concentrations in blank and the least concentration in stress level was-1 MPa. In stress effect on leaf chlorophyll content, meaningful increase of chlorophyll a and b synchronized imposed increase of stress level. It was observed that with chlorophyll a the highest concentration in stress level was-0.6 MPa and the least concentration exists in blank; and also with chlorophyll b the stress level,-1 MPa had the highest and blank had the least concentration (P<0.01).

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Section: Resultsmentioning

confidence: 99%

The studying effect of drought stress on germination, proline, sugar, lipid, protein and chlorophyll content in purslane (Portulaca oleracea L.) leaves

Rahdari¹,

Hosseini²,

Tavakoli³

2012

J. Med. Plants Res.

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“…Based on correlation analysis (Table 3), results show that under drought stress (300 mM mannitol), shoot length and proline content showed high positive correlation (r = 0.99, p \ 0.01). Accumulation of proline under water stress helps plants maintain osmosis balance (Fedina et al 2002), reduce water losses (Yokota et al 2006), and also supplies energy for survival and growth (Kumar et al 2011). Therefore, the result of this study shows that proline content is a good indicator for drought tolerance and can be used to screen wheat varieties at early stages of development.…”

Section: Discussionmentioning

confidence: 99%

Phenotypic and molecular variation in drought tolerance of Jordanian durum wheat (Triticum durum Desf.) landraces

Khateeb

Shalabi

Schroeder

et al. 2017

Physiol Mol Biol Plants

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Drought is considered one of the major constraints of plant growth and productivity worldwide. Plants respond to drought through different mechanisms including physiological, biochemical, and gene expression modulation. Studying these mechanisms will provide better understanding of drought response mechanisms and will help breeders in developing new cultivars. In this study, growth, biochemical, and molecular responses of four wheat ( Desf.) landraces to drought stress (300 mM mannitol) were investigated at the seedling stage. Reverse transcription-polymerase chain reaction was used to assess gene expression level for a drought stress responsive gene (). Germination percentage, shoot length, root length, and root number for all landraces were decreased significantly under drought stress. However, drought stress caused an increase in proline content, lipid peroxidation level, and transcript level. According to the studied traits, the Karak landrace showed long shoots (48% relative to its control), the longest roots (45% relative to its control) and the highest proline content (483% relative to its control). The results indicate that from the landraces studied, Karak may be selected as the most tolerant wheat landrace and may help in wheat breeding programs for adaptation to drought-prone environments.

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“…This increased tolerance to UV-B exposure was probably due to proline accumulation induced by salt stress conditions. 105 In addition, exogenous proline application to barley seedlings followed by UV-B exposure resulted in reduced chlorophyll/carotenoid ratio, oxygen evolution rate and photochemical efficiency of PS II, and also increased proline accumulation. 106 The reduced chlorophyll / carotenoid ratio by exogenous proline application was due to synthesis of pigments that provided protection to cells against UV-B radiation exposure (Fig.…”

Section: Effect Of Exogenous Proline On Oxidative Stress and The Antimentioning

confidence: 97%

Role of proline under changing environments

Hayat

Alyemeni³

et al. 2012

Plant Signaling & Behavior

2,207

1,149

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Light-Dark Changes in Proline Content of Barley Leaves under Salt Stress

Cited by 36 publications

References 21 publications

The studying effect of drought stress on germination, proline, sugar, lipid, protein and chlorophyll content in purslane (Portulaca oleracea L.) leaves

The studying effect of drought stress on germination, proline, sugar, lipid, protein and chlorophyll content in purslane (Portulaca oleracea L.) leaves

Phenotypic and molecular variation in drought tolerance of Jordanian durum wheat (Triticum durum Desf.) landraces

Role of proline under changing environments

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