INVESTIGADORES
BUSI Maria Victoria
artículos
Título:
Mitochondrial dysfunction affects chloroplast functions.
Autor/es:
BUSI, M.V.; GOMEZ-LOBATO, M.E.; ARAYA, A; GOMEZ-CASATI, D.F
Revista:
Plant Signal Behav
Editorial:
LANDES BIOSCIENCE
Referencias:
Lugar: Austin, Texas; Año: 2011 vol. 6 p. 1 - 4
ISSN:
1559-2316
Resumen:
The transcriptomic response of A9:u-ATP9 and apetala3:u-ATP9 lines
carrying a mitochondrial dysfunction in flower tissues has been
characterized. Both lines showed an alteration in the transcription of
several genes involved in carbon and nitrogen metabolism, stress
responses, transcription factors and DNA binding proteins.
Interestingly, several transcripts of photosynthetic-related genes were
also affected in their expression such as the mRNAs encoding for
chlorophyllase, chlorophyll binding proteins and a PSII. Moreover,
chlorophyll levels were reduced and the Mg-dechelatase activity was
increased, indicating an alteration in chlorophyll metabolism. Our
results suggest that the mitochondrial dysfunction may also affect
chloroplastic functions, and that our model could be useful to uncover
retrograde signaling mechanisms operating between the three different
plant genomes.