Aluminium absorption by intact roots of the Al-accumulating plant Camellia sinensis L.

Abstract

-Tea (Camellia sinensis L.) is an Al-accumulating plant, taking up a large amount of aluminium (Al). However, information about Al transport into the roots is limited. In the present study, the absorption of Al by intact roots of young tea plants as well as the effects of fluoride, and solution pH were investigated. The absorption of Al by intact tea roots can be described by two phases, a rapid phase in the first 60 min followed by a slower phase for at least 24 h, which is not different from those observed in non-Al-accumulating plants. This pattern remained more or less the same after citric acid desorption for 30 min, being non-linear until the end of the initial 60 min. Absorption of Al was significantly influenced by solution pH, increasing remarkably from pH 3.2 to 4.8. A combined supply of Al and F in the nutrient solution significantly reduced the uptake of Al.absorption / aluminium / fluoride / pH / tea

Qualitative and Quantitative Content Determination of Macro-Minor Elements in Bryonia Alba L. Roots using Flame Atomic Absorption Spectroscopy Technique

“…It has negative results in being suppressed root growth and causing a series of abnormal metabolic effects. 29 Being an important herbal plant in the world, Bryonia alba L. roots also contain a concentration of Al of about 7.8 mg/ 100 g dry weight of the sample, and can be considered an important source of dietary Al.…”

Interactions between aluminum and boron in tea (Camellia sinensis) plants

“…The carboxylic groups of CW phenolic acids have high affinity for Al ions and the stability constants of Al complexes with these carboxylic groups are high (McDonald et al 1996). Ruan and Wong (2004) attributed the increasing Al accumulation in a non-exchangeable Al fraction in tea roots to a substantial quantity of phenolic compounds in the endodermis layer sequestering a considerable amount of Al in the CW. Although in a recent work on tea (Gao et al 2014) lower Al biding capacity of pectin-and hemicellulose-free preparations of CW-rich fractions was considered as justification of Al binding to pectin and hemicellulose, the applied chemical treatments may readily remove also other CW components including phenolic acids.…”

Determination of heavy metals and phytochemical analysis of some selected medicinal plants

“…Aluminum (Al) ions are considered toxic to most plants. It has negative results in being suppressed root growth and causing a series of irregular metabolic effects [36]. Being an important herbal plant in the world, Samples of Plectranthus mollis, Elaeagnus conferta and Grewia tilaefolia leaf extracts contain 3.715 ppm, 2.118 ppm and 4.381ppm, dry weight of t Aluminum.…”