Papers by Venkatesh Jelli
L-ascorbic acid (vitamin C) is a major antioxidant in plants and plays a significant role in miti... more L-ascorbic acid (vitamin C) is a major antioxidant in plants and plays a significant role in mitigation of excessive
cellular reactive oxygen species activities caused by number of abiotic stresses. Plant ascorbate levels change
differentially in response to varying environmental stress conditions, depending on the degree of stress and species
sensitivity. Successful modulation of ascorbate biosynthesis through genetic manipulation of genes involved in
biosynthesis, catabolism and recycling of ascorbate has been achieved. Recently, role of ascorbate in alleviating
number of abiotic stresses has been highlighted in crop plants. In this article, we discuss the current understanding
of ascorbate biosynthesis and its antioxidant role in order to increase our comprehension of how ascorbate helps
plants to counteract or cope with various abiotic stresses.
Aquaporins belongs to the major intrinsic proteins involved in the transcellular membrane transpo... more Aquaporins belongs to the major intrinsic proteins involved in the transcellular membrane transport of water and other small solutes. A comprehensive genome-wide search for the homologues of Solanum tuberosum major intrinsic protein (MIP) revealed 41 full-length potato aquaporin genes. All potato aquaporins are grouped into five subfamilies; plasma membrane intrinsic proteins (PIPs), tonoplast intrinsic proteins (TIPs), NOD26-like intrinsic proteins (NIPs), small basic intrinsic proteins (SIPs) and x-intrinsic proteins (XIPs). Functional predictions based on the aromatic/arginine (ar/R) selectivity filters and Froger's positions showed a remarkable difference in substrate transport specificity among subfamilies. The expression pattern of potato aquaporins, examined by qPCR analysis, showed distinct expression profiles in various organs and tuber developmental stages. Furthermore, qPCR analysis of potato plantlets, subjected to various abiotic stresses revealed the marked effect of stresses on expression levels of aquaporins. Taken together, the expression profiles of aquaporins imply that aquaporins play important roles in plant growth and development, in addition to maintaining water homeostasis in response to environmental stresses.
Journal of Plant Growth …
Horticulture, …, Jan 1, 2012
원예과학기술지 제 29 별호 2, 107~ 108 쪽 (총 2 쪽), Jan 1, 2011
108 Kor. J. Hort. Sci. Technol. 29 (SUPPL II) October 2011 was observed in the transgenic potato ... more 108 Kor. J. Hort. Sci. Technol. 29 (SUPPL II) October 2011 was observed in the transgenic potato plants subjected to abiotic stress conditions. These findings demonstrate the use of chlorophyll-a fluorescence kinetics as an important tool in the analysis of photosynthetic performance of plants under various abiotic stress conditions. T. 02-450-3739, F. 02-3436-5439 sewpark@ konkuk. ac. kr
… of Phytopathology and …, Jan 1, 2011
Protoplasma, Jan 1, 2012
Plastid genetic engineering has come of age, becoming today an attractive alternative approach fo... more Plastid genetic engineering has come of age, becoming today an attractive alternative approach for the expression of foreign genes, as it offers several advantages over nuclear transformants. Significant progress has been made in plastid genetic engineering in tobacco and other Solanaceae plants, through the use of improved regeneration procedures and transformation vectors with efficient promoters and untranslated regions. Many genes encoding for industrially important proteins and vaccines, as well as genes conferring important agronomic traits, have been stably integrated and expressed in the plastid genome. Despite these advances, it remains a challenge to achieve marked levels of plastid transgene expression in non-green tissues. In this review, we summarize the basic requirements of plastid genetic engineering and discuss the current status, limitations, and the potential of plastid transformation for expanding future studies relating to Solanaceae plants.
… and Molecular Plant …, Jan 1, 2012
Plant diseases can drastically abate the crop yields as the degree of disease outbreak is getting... more Plant diseases can drastically abate the crop yields as the degree of disease outbreak is getting severe around the world. Therefore, plant disease management has always been one of the main objectives of any crop improvement program. Plant disease resistance (R) genes have the ability to detect a pathogen attack and facilitate a counter attack against the pathogen. Numerous plant R-genes have been used with varying degree of success in crop improvement programs in the past and many of them are being continuously exploited. With the onset of recent genomic, bioinformatics and molecular biology techniques, it is quite possible to tame the R-genes for efficiently controlling the plant diseases caused by pathogens. This review summarizes the recent applications and future potential of R-genes in crop disease management.
Crop Science, Jan 1, 2011
Biotechnology …, Jan 1, 2011
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Papers by Venkatesh Jelli
cellular reactive oxygen species activities caused by number of abiotic stresses. Plant ascorbate levels change
differentially in response to varying environmental stress conditions, depending on the degree of stress and species
sensitivity. Successful modulation of ascorbate biosynthesis through genetic manipulation of genes involved in
biosynthesis, catabolism and recycling of ascorbate has been achieved. Recently, role of ascorbate in alleviating
number of abiotic stresses has been highlighted in crop plants. In this article, we discuss the current understanding
of ascorbate biosynthesis and its antioxidant role in order to increase our comprehension of how ascorbate helps
plants to counteract or cope with various abiotic stresses.
cellular reactive oxygen species activities caused by number of abiotic stresses. Plant ascorbate levels change
differentially in response to varying environmental stress conditions, depending on the degree of stress and species
sensitivity. Successful modulation of ascorbate biosynthesis through genetic manipulation of genes involved in
biosynthesis, catabolism and recycling of ascorbate has been achieved. Recently, role of ascorbate in alleviating
number of abiotic stresses has been highlighted in crop plants. In this article, we discuss the current understanding
of ascorbate biosynthesis and its antioxidant role in order to increase our comprehension of how ascorbate helps
plants to counteract or cope with various abiotic stresses.