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|Título:||Transcriptomic analysis of iron deficiency related genes in the legumes|
|Autor:||Santos, Carla A.|
Silva, Ana I.
Carvalho, Ana L.
Iron deficiency chlorosis (IDC)
|Citação:||SANTOS, Carla A. ...[et al] - Transcriptomic analysis of iron deficiency related genes in the legumes. Food Research International . ISSN 0963-9969. Vol. 54 (2013), p. 1162–1171|
|Resumo:||Among the mineral elements required by humans, iron (Fe) is the most common cause of nutritional deficiencies, particularly anaemia. Legume plants are extremely important in the world's diet and they are major sources of mineral nutrients. However, when these plant foods are grown in calcareous soil, their production is severely affected by Fe deficiency chlorosis (IDC), andwhen less Fe is available for absorption, less amount of this element will be available for accumulation in the edible plant parts. As Fe plays critical roles in photosynthesis and respiration, when lacking this element, plants develop chlorosis and their growth is drastically reduced. IDCmorphological symptoms weremonitored in soybean (Glycinemax), common bean (Phaseolus vulgaris) and themodel crop barrel medic (Medicago truncatula).When compared to the other two legumes, G. max presented lower Fe-reduction rates and severe chlorosis, associated with lower SPAD values. Transcriptome analysiswas performed in roots of the three specieswhen grown in Fe deficiency and Fe sufficiency, and 114,723 annotated geneswere obtained for all samples. Four IDC-related genes were up-regulated in common by the three species and can be considered key players involved in the IDC response, namely, metal ligands, transferases, zinc ion binding and metal ion binding genes. With regards to the genes most highly expressed under iron deficiency individually by each species, we found that the most highly expressed genes were a defensin in P. vulgaris, a phosphatase in M. truncatula and a zinc ion binding gene in G. max.|
|Aparece nas colecções:||CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review|
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