Root indeterminate growth and its outstanding ability to produce new tissues continuously make this organ a highly dynamic structure able to respond promptly to external environmental stimuli. Developmental processes therefore need to be finely tuned, and hormonal cross-talk plays a pivotal role in the regulation of root growth. In contrast to what happens in animals, plant development is a post-embryonic process. A pool of stem cells, placed in a niche at the apex of the meristem, is a source of self-renewing cells that provides cells for tissue formation. During the first days post-germination, the meristem reaches its final size as a result of a balance between cell division and cell differentiation. A complex network of interactions between hormonal pathways co-ordinates such developmental inputs. In recent years, by means of molecular and computational approaches, many efforts have been made aiming to define the molecular components of these networks. In this review, we focus our attention on the molecular mechanisms at the basis of hormone cross-talk during root meristem size determination.

Plant hormone cross-talk: the pivot of root growth / Pacifici, Elena; Polverari, Laura; Sabatini, Sabrina. - In: JOURNAL OF EXPERIMENTAL BOTANY. - ISSN 0022-0957. - 66:4(2015), pp. 1113-1121. [10.1093/jxb/eru534]

Plant hormone cross-talk: the pivot of root growth

PACIFICI, ELENA;POLVERARI, LAURA;SABATINI, Sabrina
2015

Abstract

Root indeterminate growth and its outstanding ability to produce new tissues continuously make this organ a highly dynamic structure able to respond promptly to external environmental stimuli. Developmental processes therefore need to be finely tuned, and hormonal cross-talk plays a pivotal role in the regulation of root growth. In contrast to what happens in animals, plant development is a post-embryonic process. A pool of stem cells, placed in a niche at the apex of the meristem, is a source of self-renewing cells that provides cells for tissue formation. During the first days post-germination, the meristem reaches its final size as a result of a balance between cell division and cell differentiation. A complex network of interactions between hormonal pathways co-ordinates such developmental inputs. In recent years, by means of molecular and computational approaches, many efforts have been made aiming to define the molecular components of these networks. In this review, we focus our attention on the molecular mechanisms at the basis of hormone cross-talk during root meristem size determination.
2015
Auxin; cell differentiation; cell division; cytokinin; gibberellin; root meristem.; Cell Differentiation; Cell Division; Cytokinins; Gene Expression Regulation, Developmental; Gibberellins; Indoleacetic Acids; Meristem; Plant Development; Plant Growth Regulators; Plant Roots; Plants; Signal Transduction; Stem Cell Niche; Gene Expression Regulation, Plant; Plant Science; Physiology
01 Pubblicazione su rivista::01a Articolo in rivista
Plant hormone cross-talk: the pivot of root growth / Pacifici, Elena; Polverari, Laura; Sabatini, Sabrina. - In: JOURNAL OF EXPERIMENTAL BOTANY. - ISSN 0022-0957. - 66:4(2015), pp. 1113-1121. [10.1093/jxb/eru534]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/868707
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