Cell transformation of Arabidopsis thaliana (L.) Heynh. with Agrobacterium tumefaciens (LBA4404 strain) was performed in two ways: in vitro by the transformation of root and stem explants and inplanta by the transformation of whole plants in the green­ house. Agrobacterium contained the binary plasmid pBI121 or its constructs with the fragments of carrot DC-8 promoter. The results show that tra...

It is well known that a long defoliated piece of stem of Bryophyllum calycinum forms shoots only at the apical or the two apical nodes, while when such a stem is cut into as many pieces as there are nodes each node produces shoots. It is shown in this paper that the dry weight of shoots produced in the apical nodes of a long piece of stem is approximately equal to the dry weight of shoots the s...

BACKGROUND Shyonaka (Oroxylum indicum Vent.; Bignoniaceae) root bark is one of the ingredients of dashamoola (a group of 10 roots), and is used for its anti-inflammatory and analgesic action in a number of compound formulations in Ayurveda. AIM Ayurvedic Pharmacopoeia of India (API) recommends using the stem bark instead of root bark. MATERIAL AND METHODS An attempt has been made to study t...

Background & Aims of the Study: Aquatic macrophytes, given their rapid growth and high bio mass production, great potential to accumulate heavy metals in their organs. Phragmites australis as a hyper-cumulative plant plays an important role in the bioremediation. The Badavar River of Noorabad, Lorestan province, is exposed to urban wastewater and agricultural runoffs. In order to heavy metals (...

allelopathy is the main factor of weed interference on growth and development of crops. in order to study of allopathic effect of hoery cress organs extrate on germination and seedling growth of triticale, two separate factorial experiment based on randomized complete block design with four replication were conducted under laboratory and green house conditions. treatment were included of extrac...

The composition, integrity, and architecture of the macromolecular matrix of cell walls, collectively referred to as cell wall ultrastructure, exhibits variation across species and organs and among cell types within organs. Indirect approaches have suggested that modifications to cell wall ultrastructure occur in response to abiotic stress; however, modifications have not been directly observed...

BACKGROUND Ternimalia brownii Fresen (Combretaceae) is widely used in traditional medicine to treat bacterial, fungal and viral infections. There is a need to evaluate extracts of this plant in order to provide scientific proof for it's wide application in traditional medicine system. METHODS Extraction of stem bark, wood and whole roots of T. brownii using solvents of increasing polarity, na...

Manganese (Mn) toxicity is a major constraint limiting plant growth on acidic soils. Superior Mn tolerance in Stylosanthes spp. has been well documented, but its molecular mechanisms remain largely unknown. In this study, superior Mn tolerance in Stylosanthes guianensis was confirmed, as reflected by a high Mn toxicity threshold. Furthermore, genetic variation of Mn tolerance was evaluated usin...