Selenite transiently represses transcription of photosynthesis-related genes in potato leaves.
A striking response of potato leaves to aspersion with selenite was observed at the transcriptional level by means of cDNA microarrays analysis. This response is characterized by a general transient repression of genes coding for components of photosynthetic systems and of other light-regulated genes. In particular, maximal repression was observed 8 h after selenite aspersion, while 24 h after the treatment a complete recovery of normal transcriptional levels was detected. Another general feature of the transcriptional response to selenite is represented by the transcriptional induction of genes related to amino acid metabolism, and to stress defense; interestingly, two genes coding for glutathione S-transferases were found early-induced upon selenite treatment.
Poggi
Valeria
V
Department of Industrial Chemistry, University of Bologna, Viale Risorgimento 4, Bologna (I), 40136, Italy.
Del Vescovo
Valerio
V
Di Sanza
Claudio
C
Negri
Rodolfo
R
Hochkoeppler
Alejandro
A
D005810:Multigene Family; D010788:Photosynthesis / Q000235:genetics* / Q000528:radiation effects; D018515:Plant Leaves / Q000187:drug effects* / Q000235:genetics* / Q000254:growth & development / Q000528:radiation effects; D018038:Sodium Selenite / Q000494:pharmacology*; D011198:Solanum tuberosum / Q000187:drug effects* / Q000235:genetics* / Q000254:growth & development / Q000528:radiation effects; D014158:Transcription, Genetic / Q000187:drug effects* / Q000235:genetics
D018038:Sodium Selenite