Physiological Changes in Cultured Sorghum Cells in Response to Induced Water Stress

Autor:	Roberta H. Smith, Shyamala Bhaskaran, Ronald J. Newton, Jeffrey D. Puryear
Rok vydání:	1986
Předmět:	Sucrose biology Physiology fungi food and beverages Fructose Articles Plant Science Carbohydrate musculoskeletal system Sorghum biology.organism_classification Horticulture chemistry.chemical_compound Tissue culture chemistry Callus Botany Genetics Poaceae Cultivar
Zdroj:	Plant Physiology. 81:626-629
ISSN:	1532-2548 0032-0889
DOI:	10.1104/pp.81.2.626
Popis:	Eight cultivars Sorghum bicolor (L.) Moench were grown as callus cultures under induced, prolonged water stress (8 weeks), with polyethylene glycol in the medium. Concentrations of soluble carbohydrates and organic acids in callus were measured at the end of the growth period to determine differences in response to prolonged water stress. Sucrose, glucose, fructose, and malate were the predominant solutes detected in all callus at all water potentials. All cultivars had high levels of solutes in the absence of water stress and low levels in the presence of prolonged water stress. However, at low water potentials, low levels of solutes were observed in drought-tolerant cultivar callus and high solute levels were observed in drought-susceptible cultivar callus. Estimated sucrose concentrations were significantly higher in water-stressed, susceptible cultivar callus. Large solute concentrations in susceptible cultivar callus were attributed to osmotic adjustment and/or reduced growth during water stress.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d18d42ce87167dc23849f6031208844 https://doi.org/10.1104/pp.81.2.626 Zobrazit plný text záznamu