The Effect of Sodium Chloride on Solute Potential and Proline Accumulation in Soybean Leaves

Autor:	Burlyn E. Michel, Ansary E. Moftah
Rok vydání:	1987
Předmět:	chemistry.chemical_classification Molar concentration Physiology Chemistry Sodium fungi Inorganic chemistry food and beverages Salt (chemistry) chemistry.chemical_element Plant Science Horticulture Water potential Glycine Genetics Cultivar Proline Gram
Zdroj:	Plant Physiology. 83:238-240
ISSN:	1532-2548 0032-0889
DOI:	10.1104/pp.83.2.238
Popis:	Two cultivars of soybean (Glycine max [L.] Merr.) were grown in solution with up to 100 millimolar NaCl. Leaf solute potential was −1.1 to −1.2 megapascals in both cultivars without NaCl. At 100 millimolar NaCl leaf solute potential was −3.1 to −3.5 megapascals in Bragg and −1.7 megapascals in Ransom. The decrease in solute potential was essentially proportional to the concentration of NaCl. In both salt susceptible Bragg and salt semitolerant Ransom, leaf proline was no more than 0.4 micromole per gram fresh weight at or below 20 millimolar NaCl. At 40 and 60 millimolar NaCl, Bragg leaf proline levels were near 1.2 and 1.9 micromoles per gram fresh weight, respectively. Proline did not exceed 0.5 micromole per gram fresh weight in Ransom even at 100 millimolar NaCl. Proline accumulated in Bragg only after stress was severe enough to induce injury; therefore proline accumulation is not a sensitive indicator of salt stress in soybean plants.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::48666231bbedd6a3554f0a86199018c8 https://doi.org/10.1104/pp.83.2.238 Zobrazit plný text záznamu