Abstract
Accumulation of proline, activities of peroxidase (POX), catalase (CAT), phenylalanine ammonia lyase (PAL) and malate dehydrogenase (MDH) were studied during different developmental stages of somatic embryos in chickpea. Callus cultures that did not form somatic embryos served as control. While increased levels of proline and POX activity were noticed in globular stages of embryos, CAT activity increased during early and late heart-shaped embryo formation indicating tissue-specific activation of these enzymes. The activity of PAL reached a peak during torpedo and cotyledonary stages of embryo development. On the other hand, MDH activity enhanced during the germination of somatic embryos inferring more requirement of energy during this stage. Electrophoretic (sodium dodecyl sulfate polyacrylamide gel electrophoresis) pattern of proteins revealed that ten bands are associated with non-embryogenic tissues, whereas 11 bands with globular, heart, torpedo and cotyledonary stages of embryo development and nine bands during the germination stage of embryos. Two extra stage-specific protein bands with molecular masses of 16 and 18 kDa appeared during globular, heart, torpedo, and cotyledonary stages. But, these bands disappeared during germination of embryos and are absent in non-embryogenic cultures. This study thus may help in the identification of proteins and the role of above enzymes during different developmental stages of somatic embryo induction and their maturation in a recalcitrant leguminous crop plant chickpea.
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Kiran Ghanti, S., Sujata, K.G., Rao, S. et al. Role of enzymes and identification of stage-specific proteins in developing somatic embryos of chickpea (Cicer arietinum L.). In Vitro Cell.Dev.Biol.-Plant 45, 667–672 (2009). https://doi.org/10.1007/s11627-009-9197-7
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DOI: https://doi.org/10.1007/s11627-009-9197-7