Stress Metabolism I. Nitrogen Metabolism and Growth in the Barley Plant During Water Stress

Singh, TN; Paleg, IG; Aspinall, D.

doi:10.1071/bi9730045

Cited by 272 publications

(94 citation statements)

References 17 publications

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“…The most frequently detected soluble nitrogen fraction was proline, which accumulated in response to water-deficit stress on intact plants or excised Downloaded by [Cornell University Library] leaves (Singh et al, 1973;Waldren et al, 1974;Stewart et al, 1966). Other nitrogenous compounds, such as asparagine and glutamine, also accumulated in plants stressed with low water potential (McMichael and Elmore, 1977;Singh et al 1973).…”

Section: Discussionmentioning

confidence: 98%

Ethylene evolution and ammonium accumulation by tomato plants under water and salinity stresses. Part II

Feng

Barker

1992

Journal of Plant Nutrition

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Foliar wilting, epinasty, abscission, chlorosis, and necrosis are common symptoms in plants affected by water and salinity stresses. Ethylene evolution and ammonium accumulation frequently accompany the expression of the symptoms of stresses from various origins. These symptoms and physiological phenomena have been associated with other environmental stresses, such as ammonium toxicity. Intact and excised tomato plants (Lycopersicon esculentum Mill. 'Heinz 1350' and neglecta-1) were subjected to stresses of waterlogging, water-deficit, or saline conditions (NaCl or CaCl 2 ). In soil culture in the greenhouse, tomato plants subjected to waterlogging developed epinasty and chlorosis and had increased ethylene evolution and ammonium accumulation. The application of aminooxyacetic acid (AOA) ameliorated the symptoms and reduced ethylene evolution and ammonium accumulation. Tomato subjected to drought developed chlorosis and had enhanced ammonium accumulation, but no increased ethylene evolution was observed. The chlorotic and necrotic symptoms were observed for plants receiving NaCl or CaCl 2 . Application of ammonium nutrition or water stress aggravated the development of toxic symptoms. Ammonium accumulation and ethylene evolution were enhanced with intact plants or excised seedlings under these stresses. Application of AOA through stems of excised seedlings

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Section: Discussionmentioning

confidence: 98%

Ethylene evolution and ammonium accumulation by tomato plants under water and salinity stresses. Part II

Feng

Barker

1992

Journal of Plant Nutrition

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“…Proline accumulation is important for osmotic adjustment under abiotic stress conditions (Singh et al, 1973;Riazi et al, 1985;Navari-Izzo et al, 1990;Ober and Sharp, 1994;Hyun et al, 2003). Although there are many controversial issues with proline accumulation and stress resistance, it is believed that high level of proline can be beneficial to stressed plants (Hyun et al, 2003 and references therein).…”

Section: Introductionmentioning

confidence: 95%

Salt-stress-induced proline accumulation in germinating embryos:Evidence suggesting a role of proline in seed germination

Thakur¹,

Sharma²

2005

Journal of Arid Environments

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“…Thawed fresh material was extracted with methanol:chloroform: water, 12:5 : 1 (v:v:v) (Singh et al 1973). Proline was determined with the acid ninhydrin method of Troll and Lindsley (1955), except that toluene was used instead of benzene.…”

Section: Organic Analysismentioning

confidence: 99%

Effect of salinity and K/Na ratio of irrigation water on growth and solute content of Atriplex amnicola and Sorghum bicolor

El-Haddad

O’Leary

1994

Irrig Sci

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Total salinity and K/Na ratios in the irrigation water were varied for two different types of plants; sorghum, a moderately salt tolerant crop plant whose growth is inhibited by high NaCI levels, and Atriplex, an extreme halophyte whose growth is stimulated by high NaCI levels. Sorghum growth was significantly reduced at all salinity levels from 50 to 150 mM, but Atriplex growth was not reduced until salinity exceeded 100 mM. In both species, growth reductions were increased by increasing the ratio of K to Na from 1/100 to 1/1 in the irrigation water. The amount of K and Na accumulated in the leaves of Atriplex reflected the relative amounts in the irrigation water, but in sorghum most of the increase in the concentration of K + Na was due to the increase in K regardless of the ratio of K/Na in the irrigation water. Nitrate levels in leaves of sorghum were little affected by salinity but were decreased in Atriplex by the combination of high salinity and K/Na ratio. The lower amount of salt accumulation in sorghum was compensated for by greater accumulation of soluble organic compounds, such as proline and soluble carbohydrates, that presumably were osmotically active and could contribute to osmotic adjustment. All of the results supported the general conclusion that, despite differences between glycophytes, such as sorghum, and halophytes, such as Atriplex, in sensitivity to the total soluble salt concentration in irrigation water, in both species growth was reduced more by K/Na ratios of 1/1 and 1/10 than by a ratio of 1/100 at those salinity levels that significantly reduced growth in each species.

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Stress Metabolism I. Nitrogen Metabolism and Growth in the Barley Plant During Water Stress

Cited by 272 publications

References 17 publications

Ethylene evolution and ammonium accumulation by tomato plants under water and salinity stresses. Part II

Ethylene evolution and ammonium accumulation by tomato plants under water and salinity stresses. Part II

Salt-stress-induced proline accumulation in germinating embryos:Evidence suggesting a role of proline in seed germination

Effect of salinity and K/Na ratio of irrigation water on growth and solute content of Atriplex amnicola and Sorghum bicolor

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