Abstract

JIMENEZ S., Juan de la Cruz; MORENO F., Liz Patricia  and  MAGNITSKIY, Stanislav. Plant responses to stress due to flooding. A review. rev.colomb.cienc.hortic. [online]. 2012, vol.6, n.1, pp.96-109. ISSN 2011-2173.

Flooding has a negative effect on the majority of terrestrial plants due to a reduction of growth and the resulting senescence. Oxygen deficiency, the main effect of flooding, can change plant metabolism, inducing the alternative anaerobic pathway, an inefficient mechanism for energy production. Equally, the oxygen deficit increases the production of reactive oxygen species (ROS) both in chloroplasts and mitochondria. In response to increasing ROS, plants see a rise in their antioxidant defense system, which is considered, along with the fermentation pathway, a short-term response. When plants are submitted to long periods of flooding, they present morphological changes, such as aerenchyma formation, which is considered a longterm response. In this article, we review the short and long term responses of plants to water stress caused by flooding.

Keywords : anaerobic respiration; antioxidant defense; aerenchyma; abiotic stress.

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