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Articles by Ram Niwas
Total Records ( 2 ) for Ram Niwas
  Kishwar Ali , Ranjit Singh Gujjar , Ram Niwas , Madhuban Gopal and Aruna Tyagi
  Due to key role of ABA in drought tolerance, it was envisaged to develop a method for extraction and quantification of Abscisic Acid (ABA) and to isolate a ABA responsive and water deficit stress inducible gene from rice. A new analytical method which ensures the integrity of ABA during extraction, clean-up and estimation, was developed. ABA was quantified at different developmental stages of immature seeds and leaves. ABA content in leaves increases when a plant is exposed to water deficit stress but it decreases as the leaves approach maturity. ABA concentration also increases as developing seeds attain maturity. An ABA responsive gene of 264 bp was isolated which shows induced expression under water deficit stress. The gene has two domains, one belonging to aspartate aminotransferase super family of pyridoxal phosphate dependent enzymes and the other showing similarity with Major Facilitator Super family (MFS) of secondary transporters that include uniporters, symporters and antiporters. ABA content, extracted by a simplified methodology and estimation by HPLC, is found to be correlated with the degree to which the stress alters plant water status which results in the expression of the identified gene.
  S.M. Yadav , R.K. Patil , Rai Ajay Kumar , L.P. Balai , S. Singh and Ram Niwas
  The weekly survey carried out from first week of October to fourth week of January, 2008-09, revealed that the maximum disease incidence of Penicillium rot was observed to the tune of 4.93, 4.35 and 2.89% at Vegetable Market, Juni Shak Market, Station Road, Anand and Horticulture Farm Shop, A.A.U., Anand, respectively. The disease incidence of various rots (Penicillium, Alternaria, Colletotrichum, Aspergillus, Phomopsis and other rots) were found maximum at Vegetable Market and Juni Shak Market, Anand than the Horticulture Farm Shop, Anand. The pure culture was obtained from surveyed of aonla fruit and sent for identification to Indian Type Culture Collection (I.T.C.C.), Division of Mycology and Plant Pathology, I.A.R.I., New Delhi and was identified as a new recorded the Penicillium funiculosum (ITCC: 7046.08).
 
 
 
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