Role of organic acids in the formation of the ionic composition in developing glycophyte leaves

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

8 Цитирования (Scopus)

Аннотация

The ionic composition in the leaves of some glycophyte plants (Phaseolus vulgaris L., Lycopersicon esculentum L., and Amaranthus cruentus L.) was studied during leaf development. Plants were grown in a stationary hydroponic culture; a growth medium contained equimolar concentrations of inorganic ions (NO 3 - , Cl-, SO 4 2- , H2PO 4 - , K+, Ca2+, Mg2+, and Na+) equal to 5 mg-equiv./l for each ion. In the juvenile leaf, the main ions were K+ and water-soluble anions of organic acids represented mainly by di-and tricarboxylic acids in kidney bean and tomato and oxalic acid in amaranth. An increase in the total amount of organic anions, coinciding with the accumulation of bivalent cations, was registered in leaves of glycophytes during their development. Mature and senescing leaves of tomato and kidney bean accumulated mainly di-and tricarboxylic acid salts with the prevalence of Ca2+ ions. In amaranth leaves, the formation of water-insoluble (acid-soluble) oxalate pool containing Ca2+ ions (mature leaves) or Ca2+ and Mg 2+ ions (senescing leaves) was registered. The priority role of the metabolism of organic acids in the formation of the ionic composition of glycophyte leaves during their development is discussed. It is supposed that the species-specific ionic composition of glycophyte leaves at different developmental stages is due mainly to the pattern of carbon metabolism causing the accumulation either of di-and tricarboxylic acids or oxalic acid.

Язык оригиналаанглийский
Страницы (с-по)336-342
Число страниц7
ЖурналRussian Journal of Plant Physiology
Том54
Номер выпуска3
DOI
СостояниеОпубликовано - мая 2007

Предметные области Scopus

  • Прикладная ботаника

Fingerprint

Подробные сведения о темах исследования «Role of organic acids in the formation of the ionic composition in developing glycophyte leaves». Вместе они формируют уникальный семантический отпечаток (fingerprint).

Цитировать