Institutional Publications

Permanent URI for this collectionhttps://ndkr-library.nipgr.ac.in/handle/123456789/11

Browse

Filters

2005 - 20082

Settings

Author: search.filters.author.Bhatia, ShikhaSubject: search.filters.subject.Arabidopsis

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    SHORT HYPOCOTYL IN WHITE LIGHT1, a serine-arginine-aspartate rich protein in Arabidopsis, acts as a negative regulator of photomorphogenic growth
    (American Society of Plant Biologists, 2008) Bhatia, Shikha; Gangappa, Sreeramaiah N.; Kuswaha, Ritu; Kundu, Snehangshu; Chattopadhyay, Sudip
    Light is an important factor for plant growth and development. We have identified and functionally characterized a regulatory gene SHORT HYPOCOTYL IN WHITE LIGHT1 (SHW1) involved in Arabidopsis (Arabidopsis thaliana) seedling development. SHW1 encodes a unique serine-arginine-aspartate-rich protein, which is constitutively localized in the nucleus of hypocotyl cells. Transgenic analyses have revealed that the expression of SHW1 is developmentally regulated and is closely associated with the photosynthetically active tissues. Genetic and molecular analyses suggest that SHW1 acts as a negative regulator of light-mediated inhibition of hypocotyl elongation, however, plays a positive regulatory role in light-regulated gene expression. The shw1 mutants also display shorter hypocotyl in dark, and analyses of shw1 cop1 double mutants reveal that SHW1 acts nonredundantly with COP1 to control hypocotyl elongation in the darkness. Taken together, this study provides evidences that SHW1 is a regulatory protein that is functionally interrelated to COP1 and plays dual but opposite regulatory roles in photomorphogenesis.
  • Thumbnail Image
    Item
    A basic helix-loop-helix transcription factor in Arabidopsis, MYC2, acts as a repressor of of blue light-mediate photomorphogenic growth
    (American Society of Plant Biologists, 2005) Yadav, Vandana; Mallappa, Chandrashekara; Gangappa, Sreeramaiah N.; Bhatia, Shikha; Chattopadhyay, Sudip
    This work is supported by Department of Biotechnology and Department of Science and Technology grants to S.C. V.Y., C.M., and S.N.G. are recipients of Council of Scientific and Industrial Research fellowships from the government of India.