Prof. Dibyendu N. Sengupta
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Spermidine treatment to rice seedlings recovers salinity stress-induced damage of plasma membrane and PM-bound H+-ATPase in salt-tolerant and salt-sensitive rice cultivars
(ELSEVIER SCI IRELAND LTD, 2005-03)Due to their polycationic nature, Spermidine (Spd(3+)) and Spermine (SPM4+) are known to interact with polyanionic compounds, e.g. negatively charged head group of phospholipid membrane components, thereby stabilizing ... -
Dideoxynucleoside triphosphate-sensitive DNA polymerase from rice is involved in base excision repair and immunologically similar to mammalian DNA pol beta.
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2004-07-16)A single polypeptide with ddNTP-sensitive DNA polymerase activity was purified to near homogeneity from the shoot tips of rice seedlings and analysis of the preparations by SDS-PAGE followed by silver staining showed a ... -
A dideoxynucleotide-sensitive DNA polymerase activity characterized from endoreduplicating cells of mungbean (Vigna radiata L.) during ontogeny of cotyledons
(BLACKWELL PUBLISHING, 2007-04)Within this work we describe the purification and biochemical characterization of a ddNTP-sensitive DNA polymerase purified from mungbean (Vigna radiata cv B1, L.) seeds at 18 days after fertilization, when > 70% of the ... -
An ABRE-binding factor, OSBZ8, is highly expressed in salt tolerant cultivars than in salt sensitive cultivars of indica rice
(BIOMED CENTRAL LTD, 2006-08-30)Background: The bZIP class Abscisic acid Responsive Element (ABRE)-binding factor, OSBZ8 (38.5 kD) has been considered to regulate ABA-mediated transcription in the suspension cultured cells of japonica rice. Still, nothing ... -
Trans-acting factor designated OSBZ8 interacts with both typical abscisic acid responsive elements as well as abscisic acid responsive element-like sequences in the vegetative tissues of indica rice cultivars
(SPRINGER, 2008-04)Specific cis-acting elements, identified in the stress-regulated promoters, can respond to the changes in the levels of abscisic acid. Most of our previous works were done with ACGT-containing typical abscisic acid responsive ... -
Tobacco proliferating cell nuclear antigen binds directly and stimulates both activity and processivity of ddNTP-sensitive mungbean DNA polymerase
(ELSEVIER SCIENCE INC, 2007-12-01)PCNA is well known as a component of DNA replication system and plays important roles in multiple cellular pathways in addition to replication and repair. In this work we have demonstrated the physical and functional ... -
Transgenic tobacco plants overexpressing the heterologous lea gene Rab16A from rice during high salt and water deficit display enhanced tolerance to salinity stress
(SPRINGER, 2007-10)The full length Rab16A, from the indica rice Pokkali, was introduced into tobacco by Agrobacterium-mediated transformation. The transgene was stably integrated into the genome and they originated from different lines of ... -
Analysis of processivity of mungbean dideoxynucleotide-sensitive DNA polymerase and detection of the activity and expression of the enzyme in the meristematic and meiotic tissues and following DNA damaging agent
(ELSEVIER, 2008-07-01)Analysis of the processivity of mungbean ddNTP-sensitive DNA polymerase showed the incorporation of similar to 35-40 nucleotides per binding event in the replication assays involving M13 ss DNA template with 5'-labeled ... -
Differential transcriptional regulation of banana sucrose phosphate synthase gene in response to ethylene, auxin, wounding, low temperature and different photoperiods during fruit ripening and functional analysis of banana SPS gene promoter
(SPRINGER, 2008-12)Sucrose phosphate synthase (SPS) (EC 2.3.1.14) is the key regulatory component in sucrose formation in banana (Musa acuminata subgroup Cavendish, cv Giant governor) fruit during ripening. This report illustrates differential ... -
Characterization of transcriptional profiles of MA-ACS1 and MA-ACO1 genes in response to ethylene, auxin, wounding, cold and different photoperiods during ripening in banana fruit
(ELSEVIER, 2008-12)The ripening-specific genes MA-ACS1 (Musa acuminata ACC synthase1) and MA-ACO1 (M. acuminata ACC oxidase 1) are regulated in response to a wide variety of factors. Here, we have studied the differential transcript accumulation ... -
Characterization of differential ripening pattern in association with ethylene biosynthesis in the fruits of five naturally occurring banana cultivars and detection of a GCC-box-specific DNA-binding protein
(SPRINGER, 2008-07)MA-ACS1 and MA-ACO1 are the two major ripening genes in banana and play crucial role in the regulation of ethylene production during ripening. Here, we report a comparative ripening pattern in five different naturally ... -
Comparative physiological and molecular responses of a common aromatic indica rice cultivar to high salinity with non-aromatic indica rice cultivars
(SPRINGER, 2008-08)In an attempt to understand the molecular basis of salt-stress response in the aromatic rice Gobindobhog, a comprehensive analysis encompassing physiological or biochemical assays and gene expression studies under high ... -
Differential antioxidative responses of indica rice cultivars to drought stress
(SPRINGER, 2010-01)The present study investigated the linkages between drought stress, oxidative damages and variations in antioxidants in the three rice varieties IR-29 (salt-sensitive), Pokkali (salt-tolerant) and aromatic Pusa Basmati ... -
A comparative study of cultivar differences in sucrose phosphate synthase gene expression and sucrose formation during banana fruit ripening
(ELSEVIER SCIENCE BV, 2009-10)Sucrose phosphate synthase (SPS) (E.C.2.4.1.14) is the key enzyme for sucrose formation in banana. A comparative analysis of expression profiles of SPS was carried out in association with sucrose metabolism patterns during ... -
Characterization of cultivar differences in beta-1,3 glucanase gene expression, glucanase activity and fruit pulp softening rates during fruit ripening in three naturally occurring banana cultivars
(SPRINGER, 2009-11)beta-1,3 glucanase (E.C.3.2.1.39) is the key enzyme involved in the hydrolytic cleavage of 1,3 beta-D glucosidic linkages in beta-1,3 glucans. This work describes a comparative analysis of expression patterns of beta-1,3 ... -
Understanding the molecular mechanism of transcriptional regulation of banana Sucrose phosphate synthase (SPS) gene during fruit ripening: An insight into the functions of various cis-acting regulatory elements
(Landes Bioscience, 2010-05-30)Recently, we have reported the characterization of promoter region of Sucrose phosphate synthase (SPS) gene in banana and investigated the role of some cis-elements/motifs, present in the promoter of SPS, in the transcriptional ... -
An insight into the sequential, structural and phylogenetic properties of banana 1-aminocyclopropane-1-carboxylate synthase 1 and study of its interaction with pyridoxal-5 '-phosphate and aminoethoxyvinylglycine
(INDIAN ACAD SCIENCES, 2010-06)In banana, ethylene production for ripening is accompanied by a dramatic increase in 1-aminocyclopropane-1-carboxylate (ACC) content, transcript level of Musa acuminata ACC synthase 1 (M4-ACS1) and the enzymatic activity ... -
View full text from the publisher (0) Save to: Save the selected records to My EndNote Web library more options Differential antioxidative responses of indica rice cultivars to drought stress
(SPRINGER, 2010-01)The present study investigated the linkages between drought stress, oxidative damages and variations in antioxidants in the three rice varieties IR-29 (salt-sensitive), Pokkali (salt-tolerant) and aromatic Pusa Basmati ... -
DNA repair and recombination in higher plants: insights from comparative genomics of arabidopsis and rice
(BIOMED CENTRAL, 2010-07-21)Background: The DNA repair and recombination (DRR) proteins protect organisms against genetic damage, caused by environmental agents and other genotoxic agents, by removal of DNA lesions or helping to abide them.Results: ... -
Effects of exogenous abscisic acid on some physiological responses in a popular aromatic indica rice compared with those from two traditional non-aromatic indica rice cultivars
(SPRINGER, 2009-09)The poor productivity and local confinement of indigenous aromatic rice varieties are mostly due to their susceptibility to salinity/drought/abscisic acid (ABA)-mediated abiotic stresses. It is thus essential to study the ...
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