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Alagarsamy Pandian

Alagarsamy Karthikeyan, Shunmugiah Thevar Karutha Pandian, Manikandan Ramesh
The aim of the study is to establish a routine procedure for high frequency plant regeneration from in vitro raised embryogenic callus of abiotic salt sensitive indica rice (Oryza sativa L.) cultivar ADT 43. The effect of synthetic auxin 2,4-D on callus induction was optimized to achieve high frequency plant regeneration from fresh embryogenic callus without further subculture. Friable, nodular and creamish-white embryogenic callus cultures were raised from mature rice seeds on LS medium supplemented with 2...
October 2009: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
Alagarsamy Karthikeyan, Ramakrishnan Rameshkumar, Nallusamy Sivakumar, Issa S Al Amri, Shunmugiah Karutha Pandian, Manikandan Ramesh
Dendrophthoe falcata is a hemiparasitic plant commonly used for ailments such as ulcers, asthma, impotence, paralysis, skin diseases, menstrual troubles, pulmonary tuberculosis, and wounds. In this context, the validations of the traditional claim that the leaf extract of D. falcata possesses antibiofilm and anti-quorum sensing activity against different bacterial pathogens were assessed. The bacterial biofilms were quantified by crystal violet staining. Among the 17 bacterial pathogens screened, the methanolic fraction of the leaf extract clearly demonstrated antibiofilm activity for Proteus mirabilis, Vibrio vulnificus, Aeromonas hydrophila, Shigella sonnei, Chromobacterium violaceum ATCC 12472, Vibrio parahaemolyticus, Vibrio harveyi, Vibrio alginolyticus, Vibrio cholerae, and Proteus vulgaris...
December 2012: Planta Medica
Alagarsamy Karthikeyan, Shunmugiah Karutha Pandian, Manikandan Ramesh
A simple and efficient protocol for the Agrobacterium-mediated transformation of an agronomically useful abiotic sensitive popular indica rice cv. ADT 43 has been developed. Initiation of calli were best achieved from the leaf bases of 4 days old rice seedlings on LS medium supplemented with 2.5mg/L 2,4-D and 1.0mg/L thiamine-HCl. Rice calli immersed in Agrobacterium suspension (strain EHA 105, OD(600)=0.8) were co-cultured on LS30-AsPC medium for 2 days at 25±2°C in the dark. Based on GUS expression analysis, 10min co-cultivation time with 100μM acetosyringone was found optimum for the delivery of gus gene...
September 2011: Plant Science: An International Journal of Experimental Plant Biology
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