![]() ![]() ![]() Tef grows in wide agroecological conditions ranging from semiarid areas with low rainfall to areas with high rainfall. Of the approximately 350 members of the Eragrostis genus, tef is the only one cultivated for use as a human food although several species are used as livestock fodder or forage grasses (Ketema, 1993). Tef, an allotetraploid cereal crop, is the major crop in the Horn of Africa, especially in Ethiopia where it is annually cultivated on over three million hectares of land and is staple food to over 60 million people (CSA 2015). Understanding of the genetic basis of the plant response to abiotic constraints is critical for the development of cultivars that are resilient to stress and to decrease the gap between yield potential and actual yield under stressed conditions (Setter & Waters, 2003). Along with changes in temperature, the frequency and severity of both extreme droughts and extreme precipitation events are expected to increase (Hartmann, Tank, & Rusticucci, 2013) causing billions of dollars of crop losses (Bailey‐Serres, Lee, & Brinton, 2012). In general, these results show the presence of substantial anatomical and physiological differences among tef genotypes when waterlogged during the early growth stage.Ĭlimate change is one of the most challenging problems facing global food security. Genes affecting carbohydrate metabolism, cell growth, response to reactive oxygen species, transport, signaling, and stress responses were found to change under excess moisture stress. Tsedey and Quncho had constitutive aerenchyma. Among the three tested tef genotypes, Tsedey formed more aerenchyma than Alba and had accelerated growth under waterlogging. The effects of these changes were observed on the plant physiology. Quncho and Alba genotypes were more susceptible to the excess moisture stress. Waterlogged Tsedey plants grew higher and had more root biomass than normally watered Tsedey plants. Results indicated differences in growth between the three genotypes. Illumina RNA sequencing was used to obtain the expression profiles of tef under flooding and control conditions and was verified using qPCR. Microscopy was used to monitor changes in the stem cross sections. Stomatal conductance and chlorophyll and carotenoid contents were quantified. Root and shoot growth and dry weight were observed over 22 days. Three tef genotypes, Alba, Tsedey, and Quncho, were subjected to waterlogging conditions and their growth, physiology, and change in transcript expression were measured with the goal of identifying targets for breeding cultivars with improved waterlogging tolerance. ![]() In general, these results show the presence of substantial anatomical and physiological differences among tef genotypes when waterlogged during the early growth stage.Tef, an allotetraploid cereal that is a staple food to over 60 million people in the Horn of Africa, has a high nutritional content and is resistant to many biotic and abiotic stresses such as waterlogging and drought. ![]() Tef, an allotetraploid cereal that is a staple food to over 60 million people in the Horn of Africa, has a high nutritional content and is resistant to many biotic and abiotic stresses such as waterlogging and drought. ![]()
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