Occurrence, Type, and Location of Calcium Oxalate Crystals in Leaves and Stems of 16 Species of Poisonous Plants

Doaigey, Abdullah R.

doi:10.2307/2444842

Cited by 24 publications

(19 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is widespread in Africa, Mediterranean region and the Middle East [2,3]. The plant roots are a major source of alkaloids including tropine, pseudotropine and somniferine [4].…”

Section: Introductionmentioning

confidence: 99%

Studies on leaf spot disease of Withania somnifera and its impact on secondary metabolites

et al. 2008

View full text Add to dashboard Cite

During an investigation of the disease profi le of Withania somnifera, it was observed that leaf spot is the most prevalent disease. Repeated isolations from infected leaf tissues and pathogenicity tests showed the association of fungal pathogen identifi ed as Alternaria alternata (Fr.) Keissler. Scanning electron microscopy showed various histological changes in the leaf tissues of infected plants. A decrease in total content of reducing sugars (20%) and chlorophyll (26.5%) was observed in diseased leaves whereas an increase was noticed in proline (25%), free amino acids (3%) and proteins (74.3%). High performance thin layer chromatography (HPTLC) analysis of secondary metabolites viz. withanolides, withaferin-A and total alkaloids of the diseased leaves vis-à-vis control revealed reduction in withaferin-A and withanolides contents by 15.4% and 76.3% respectively, in contrast to an increase in total alkaloids by 49.3%, information hitherto unreported in W. somnifera.

show abstract

“…It is widespread in Africa, Mediterranean region and the Middle East [2,3]. The plant roots are a major source of alkaloids including tropine, pseudotropine and somniferine [4].…”

Section: Introductionmentioning

confidence: 99%

Studies on leaf spot disease of Withania somnifera and its impact on secondary metabolites

et al. 2008

View full text Add to dashboard Cite

show abstract

“…The idioblast has a single large styloid crystal with sharply pointed ends (Franceschi 2001). The needles of calcium oxalate can even have grooves and barbs, which are thought to be responsible for channelling toxins or anchoring the needles in the wound (Sakai et al 1972;Sakai et al 1984;Kuballa et al 1981;Schmidt & Moult 1983;Doaigey 1991).…”

Section: Introductionmentioning

confidence: 99%

Calcium oxalate crystals of some Crataegus (Rosaceae) species growing in Aegean region

Demiray

2007

Biologia

View full text Add to dashboard Cite

In this study, Ca oxalate crystals were isolated from the leaves and X-ray diffraction identified them as weddelite in Crataegus pontica C. Koch, C. stevenii Polar., C. monogyna ssp. monogyna Jacq. in C. orientalis var. orientalis Pallas ex Bieb. both whewellite and weddelite crystals were found. Although there were some differences among the soluble and insoluble oxalate contents, they were not notable in the species of C. stevenii (10%; 18%), C. orientalis (12.4%; 15%), C. monogyna (12.9%; 13%), whereas in C. pontica the difference was so great with the lowest soluble (4%), and highest (28%) insoluble oxalate content. Crystals have tetragonal or prismatic shape in general but tetrahedral kinked and straight shapes were seen in C. orientalis, tetragonal aggregates in C. stevenii, and also pseudo-tetrahedral cordate (heart) shape were found in C. monogyna ssp. monogyna and C. pontica. As the crystal biomineralization is under genetic control, this characteristic hydration state of crystals of Crataegus orientalis var. orientalis must be important for systematic phylogenetics.

show abstract

“…As a result, there are a number of studies that have used this latter information for taxonomic (Franceschi and Horner 1980;Lersten and Horner 2000) and descriptive 1 Author for correspondence; fax 515-294-1337; e-mail hth@ iastate.edu. anatomical (Doaigey 1991) purposes. In the vast majority of instances, CaOx forms in living cell vacuoles (Wagner 1981;Kinzel 1989;Marty 1999) of specialized cells called crystal idioblasts (Foster 1956), and to a much lesser extent, CaOx forms within or on exposed cell walls and in some seed storage protein bodies (Horner and Wagner 1995).…”

Section: Introductionmentioning

confidence: 99%

Ascorbic Acid: A Precursor of Oxalate in Crystal Idioblasts ofYucca torreyiin Liquid Root Culture

Horner¹,

Kausch

Wagner

2000

International Journal of Plant Sciences

View full text Add to dashboard Cite

show abstract

Occurrence, Type, and Location of Calcium Oxalate Crystals in Leaves and Stems of 16 Species of Poisonous Plants

Cited by 24 publications

References 0 publications

Studies on leaf spot disease of Withania somnifera and its impact on secondary metabolites

Studies on leaf spot disease of Withania somnifera and its impact on secondary metabolites

Calcium oxalate crystals of some Crataegus (Rosaceae) species growing in Aegean region

Ascorbic Acid: A Precursor of Oxalate in Crystal Idioblasts ofYucca torreyiin Liquid Root Culture

Contact Info

Product

Resources

About