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2014 ; 166
(4
): 1713-23
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Root architecture responses: in search of phosphate
#MMPMID25341534
Péret B
; Desnos T
; Jost R
; Kanno S
; Berkowitz O
; Nussaume L
Plant Physiol
2014[Dec]; 166
(4
): 1713-23
PMID25341534
show ga
Soil phosphate represents the only source of phosphorus for plants and,
consequently, is its entry into the trophic chain. This major component of
nucleic acids, phospholipids, and energy currency of the cell (ATP) can limit
plant growth because of its low mobility in soil. As a result, root responses to
low phosphate favor the exploration of the shallower part of the soil, where
phosphate tends to be more abundant, a strategy described as topsoil foraging. We
will review the diverse developmental strategies that can be observed among
plants by detailing the effect of phosphate deficiency on primary and lateral
roots. We also discuss the formation of cluster roots: an advanced adaptive
strategy to cope with low phosphate availability observed in a limited number of
species. Finally, we will put this work into perspective for future research
directions.
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