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Molecular and cellular adaptations of maize to flooding stress.


ABSTRACT: Anaerobic treatment dramatically alters the patterns of gene expression in maize (Zea mays L.) seedlings. During anaerobiosis there is an immediate repression of pre-existing protein synthesis, with the concurrent initiation of a selective synthesis of approx. 20 proteins. Among these anaerobic proteins are enzymes involved in glycolysis and related processes. However, inducible genes that have different functions were also found; these may function in other, perhaps more long-term, processes of adaptations to flooding, such as aerenchyma formation and root-tip death. In this article we review our recent work on maize responses to flooding stress, which has addressed two questions: how are these gene expression changes initiated and how do they lead to adaptation to flooding stress? Our results indicate that an early rise in cytosolic Ca(2+), as well as a quick establishment of ionic homeostasis, may be essential for the induction of adaptive changes at the cellular as well as organismal level.

SUBMITTER: Subbaiah CC 

PROVIDER: S-EPMC4244996 | biostudies-literature |

REPOSITORIES: biostudies-literature

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