Effect of Saline Substrate on Hourly Levels of Carbohydrates and Inorganic Constituents of Barley Plants

Gauch, Hugh G.; Eaton, Frank M.

doi:10.1104/pp.17.3.347

Cited by 56 publications

(19 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high concentrations of sugar phosphates in the source leaves of salt-stunted plants suggest that photosynthesis was not limiting for growth. These results are reminiscent of the earlier work of Gauch and Eaton (14) showing increased accumulation of sucrose and starch in the shoots of salt-stunted barley plants. This accumulation of metabolites in mature photosynthesizing leaves of saltstunted plants might be attributed to a reduced number of active sinks using these metabolites for growth.…”

Section: Discussionsupporting

confidence: 77%

See 1 more Smart Citation

Interactive Effects of Salinity and Phosphorus Nutrition of the Concentrations of Phosphate and Phosphate Esters in Mature Photosynthesizing Corn Leaves

Nieman¹,

Clark²

1976

Plant Physiol.

View full text Add to dashboard Cite

The effects of salinity on corn plants (Zea mays L.) are influenced by the concentration of nutrient orthophosphate. Salinity (-2 bars each of NaCI and CaCI2) was more injurious in combination with a high concentration of orthophosphate (2 mM) (that gave optimum yields in the absence of salinity) than it was with a lower concentration (0.1 mM). With 2 mm orthophosphate, salinity seemed to damage the plant mechanisms that normally regulate the internal concentration of orthophosphate resulting in excessive accumulation and P toxicity. On the other hand, with 0.1 mM orthophosphate, salinity decreased orthophosphate concentration in mature leaves. This effect was paralleled by decreases in the concentration of adenosine 5'-triphosphate and in the energy charge of the adenylate system, indicating an orthophosphate deficit. Even so, plants survived salinity better under these conditions than in the presence of 2 mM orthophosphate. The data indicated that salinity affected the phosphorylated state of the adenine nucleotides only indirectly through its effect on the concentration of orthophosphate in the cells. Salinity, especially in the presence of 2 mM orthophosphate, resulted in an increase in the concentrations of sugar phosphates in mature photosynthesizing leaves, suggesting that translocation rather than photosynthesis was a limiting process. Decreased translocation could be a secondary effect of decreased growth. However, a decreased translocation rate could cause decreased growth by limiting the supply of essential metabolites reaching growing tissues.The recent salinity-fertility studies of Bernstein et al. (7) showed a marked interactive effect of salinity and nutrient Pi on corn plants. Salinity was more deleterious in combination with a high concentration of Pi (2 mM) than with a low concentration (0.05 mM). There occurred a greater reduction in yield and a characteristic leaf injury. The injury seemed to be a result of excessive accumulation of P; other ions did not accumulate sufficiently to account for it. Also, the injury signs were similar to those caused by P toxicity in wheat (8) and barley ( 15). These observations suggested that salinity affected the uptake and utilization of Pi by the plants. Considering the central role of P in cell metabolism, evidence of salt-induced changes in P metabolism might also provide insight regarding the mechanism of salt injury to plants. The work reported here was concerned with the effects of salinity in combination with low and high concentrations of nutrient Pi on the concentrations of Pi and of Pesters2 in mature photosynthesizing corn leaves. Preliminary ' This paper is dedicated to a fellow plant physiologist and friend.Leon Bernstein.2 Abbreviations: F6P: fructose 6-phosphate; FDP: fructose 1 6-diwork showed that salinity, like extremes in P nutrition (9), affected the concentrations of these compounds much more than it did the concentrations of lipid P and nucleic acid P. MATERIALS AND METHODS Plant Culture. Corn plants (Zea mays L. T-strain Golden...

show abstract

Section: Discussionsupporting

confidence: 77%

“…The basis for the growth-suppressive effects of salinity is still moot. The results of these experiments and others (14,19,27) indicate a close link between disturbed transport of Pi and other metabolites, growth suppression, and leaf injury.…”

Section: Discussionmentioning

confidence: 83%

Interactive Effects of Salinity and Phosphorus Nutrition of the Concentrations of Phosphate and Phosphate Esters in Mature Photosynthesizing Corn Leaves

Nieman¹,

Clark²

1976

Plant Physiol.

View full text Add to dashboard Cite

show abstract

“…However, Cramer et al (1990) observed that the NAR of saltstressed plants was positively correlated with the relative growth rate but not with the LAR, and they suggested that these discrepancies were probably due to differences in the salinity treatments and plant species used. Gauch and Eaton (1942) suggested that salinity affects the utilization of photosynthates rather than photosynthesis itself in barley. Several studies showed that salinity increased the maintenance respiration (Rm) in plants (Schwarz and Gale 1981;Bloom and Epstein 1984;Rawson 1986).…”

Section: Discussionmentioning

confidence: 99%

Effect of salinity on growth, photosynthesis and mineral composition in leguminous plantAlhagi pseudoalhagi(Bieb.)

Kurban

Saneoka

Nehira

et al. 1999

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

“…7). Other studies on beaiis (63), sweet peas (37), and barley (20) grown oni sand cultures presented evidence that saline substrates induLce miarked accuimulatioin ofnonreducing sugars. In fact, these sugars were comparatively abunidant in plants of all treatments of the present study.…”

Section: (With Nine Figures)mentioning

confidence: 94%

Growth and Biochemical Composition of Bean Plants as Conditioned by Soil Moisture Tension and Salt Concentration

1945

View full text Add to dashboard Cite

There is evidence in the literature that decreasing soil moisture content is associated with increases in the osmotic pressure of the tissue fluids in both roots and tops of plants (26,27), decreases in rate of vegetative growth (1,9,15,30, 64), modifications in stomatal opening (16, 17), a depletion in starch reserves (15,35,52, 64), a decrease in apparent photosynthesis, and an increase in respiration (50). Many of these effects were noted even though the respective plants did not wilt, and notwithstanding the fact that there is considerable evidence (8, 24, 58, 62)

show abstract

Effect of Saline Substrate on Hourly Levels of Carbohydrates and Inorganic Constituents of Barley Plants

Cited by 56 publications

References 13 publications

Interactive Effects of Salinity and Phosphorus Nutrition of the Concentrations of Phosphate and Phosphate Esters in Mature Photosynthesizing Corn Leaves

Interactive Effects of Salinity and Phosphorus Nutrition of the Concentrations of Phosphate and Phosphate Esters in Mature Photosynthesizing Corn Leaves

Effect of salinity on growth, photosynthesis and mineral composition in leguminous plantAlhagi pseudoalhagi(Bieb.)

Growth and Biochemical Composition of Bean Plants as Conditioned by Soil Moisture Tension and Salt Concentration

Contact Info

Product

Resources

About