ROLE OF POLYAMINES IN RETARDATION OF DARK INCUBATION INDUCED ALTERATIONS IN THE PRIMARY PROCESSES OF PHOTOSYNTHESIS IN MAIZE (ZEA MAYS) LEAVES

ABSTRACT: In this investigation an attempt has been made to compare the action of different polyamines such as putrescine (Put), spermidine (Spd) and spermine (Spm) in delaying the dark incubation induced alterations in primary reactions of photosynthesis in maize plants. Among these polyamines spermine (25µM) is able to provide more protection in terms of loss of chlorophyll (Chl), protein content and regaining of various electron transport activities. In addition to this, these PAs stabilize the thylakoid membranes of 72 h dark incubated samples in valency dependent manner and restore the excitation energy distribution between two photosystems (PS II and PS I)

Composites: A catalogue of books and conference13; proceedings available in the NAL Library

A catalogue of books and conference proceedings13; on Composite Materials held by NAL Librar

Characterization of a Toxigenic Vibrio cholerae O139 Strain Belonging to a New Ribotype and Isolated from a Diarrheal Patient

We characterized a Vibrio cholerae O139 strain isolated from a diarrheal patient admitted to Taluk Hospital, Cherthala, Alleppey, Kerala, India, on 9 June 2000. The V. cholerae O139 strain possesses the core of the CTX genetic element, colonization toxin-coregulated pilus, the adherence outer membrane protein, and the central regulatory protein encoded by toxR and produces cholera toxin (200 pg/ml). We provide molecular evidence showing that toxigenic V. cholerae O139 strain ALO95 belongs to a distinct genotype characterized by a unique ribotype designated B-VII and has a unique enterobacterial repetitive intergenic consensus sequence PCR fingerprint profile designated E-V