Pollen grains of Malvoideae (Malvaceae) which corbiculate bees cannot collect constitute a floral filter that excludes pollen-collecting bumble and honey from exploiting pollen resources. Although large, spiny are in fact harder to compact for collection by bees, morphology (e.g., grain diameter, spine length) is not itself reliable indicator collectability. In this study, we discovered two spe...

The genus Hibiscus belongs to the mallow family, Malvaceae comprising of about 275 species growing in tropical and sub areas. various have been used as traditional medicine all over world. There are numerous reports their medicinal uses countries like India, Nigeria, China, Srilanka etc. cure ailments such hypertension, cardiac diseases, stomach-ache, urine problems, skin diseases many more. Ba...

rhizomania is one of the most important sugar beet diseases in iran and some other parts of the world. in this study, the infection rate of the most important weeds of sugar beet fields under natural condition  to the causal agent of the bnyvv (beet necrotic yellow vein virus) disease  was investigated at fars agricultural research center , iran. roots were collected from the infected weeds and...

A new tobamovirus species has been recently isolated from hibiscus (Hibiscus rosa-sinensis) in Florida (1). This Florida hibiscus virus has been given the name Hibiscus latent Fort Pierce virus (HLFPV) to reflect the site (Fort Pierce, FL) and host (hibiscus) from which it was originally isolated. A limited survey has revealed that this virus is widespread in hibiscus and related species in the...

Hibiscus protocatechuic acid (PCA), a phenolic compound isolated from the dried flower of Hibiscus sabdariffa L. (Malvaceae), demonstrated antioxidant and antitumor promotion effects in our previous study. In the present study, Hibiscus PCA was found to inhibit the survival of human promyelocytic leukemia HL-60 cells in a concentration- and time-dependent manner. The study revealed that HL-60 c...

The 3' untranslated region (UTR) of turnip crinkle virus (TCV) RNA is 253 nt long (nt 3798-4050) with a 27 nt hairpin structure near its 3' terminus. In this study, the roles of the 3' UTR in virus accumulation were investigated in protoplasts of Hibiscus cannabinus L. and Arabidopsis thaliana (L.) Heynh. Our results showed that, in Hibiscus protoplasts, the minimal 3' UTR essential for TCV acc...

Hibiscus rosa-sinensis is a valuable ornamental species widely planted in Brazil. Many plants are affected by witches' broom disease, which is characterized by excessive axillary branching, abnormally small leaves, and deformed flowers, symptoms that are characteristic of diseases attributed to phytoplasmas. A phytoplasma was detected in diseased Hibiscus by amplification of rRNA operon sequenc...

Hibiscus taiwanensis (Malvaceae) is widely used as an alternative herb to treat disorders in Taiwan. In the present study, it is used to screen the effect on diabetic hyperglycemia in streptozotocin-induced diabetic rats (STZ-diabetic rats). The extract of Hibiscus taiwanensis showed a significant plasma glucose-lowering action in STZ-diabetic rats. Stems of Hibiscus taiwanensis are more effect...

We have initiated immunological and drug-binding studies on the tubulins from different higher plant species. Antibodies were raised against electrophoretically separated rose (Rosa sp.) tubulin alpha- and beta-subunits and characterized by immunoblot autoradiographic assays. Each IgG preparation bound to its antigen and cross-reacted differentially with the respective tubulin subunits from an ...