scholarly journals How grass keeps growing: an integrated analysis of hormonal crosstalk in the maize leaf growth zone

2019 ◽  
Vol 225 (6) ◽  
pp. 2513-2525 ◽  
Author(s):  
Dirk De Vos ◽  
Hilde Nelissen ◽  
Hamada AbdElgawad ◽  
Els Prinsen ◽  
Jan Broeckhove ◽  
...  
Keyword(s):  
Leaf Growth ◽  
Growth Zone ◽  
Integrated Analysis ◽  
Maize Leaf ◽  
Hormonal Crosstalk

scholarly journals Drought Induces Distinct Growth Response, Protection, and Recovery Mechanisms in the Maize Leaf Growth Zone

2015 ◽  
Vol 169 (2) ◽  
pp. 1382-1396 ◽  
Author(s):  
Viktoriya Avramova ◽  
Hamada AbdElgawad ◽  
Zhengfeng Zhang ◽  
Bartosz Fotschki ◽  
Romina Casadevall ◽  
...  
Keyword(s):  
Growth Response ◽  
Leaf Growth ◽  
Growth Zone ◽  
Maize Leaf ◽  
Recovery Mechanisms

scholarly journals Differential Methylation during Maize Leaf Growth Targets Developmentally Regulated Genes

2014 ◽  
Vol 164 (3) ◽  
pp. 1350-1364 ◽  
Author(s):  
Jasper Candaele ◽  
Kirin Demuynck ◽  
Douglas Mosoti ◽  
Gerrit T.S. Beemster ◽  
Dirk Inzé ◽  
...  
Keyword(s):  
Leaf Growth ◽  
Differential Methylation ◽  
Developmentally Regulated ◽  
Maize Leaf

Cadmium inhibits cell cycle progression and specifically accumulates in the maize leaf meristem

2020 ◽  
Vol 71 (20) ◽  
pp. 6418-6428
Author(s):  
Jonas Bertels ◽  
Michiel Huybrechts ◽  
Sophie Hendrix ◽  
Lieven Bervoets ◽  
Ann Cuypers ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Cycle Progression ◽  
Leaf Growth ◽  
Cellular Level ◽  
Cycle Duration ◽  
Meristematic Tissue ◽  
Cycle Progression ◽  
Maize Leaf ◽  
Cell Volumes ◽  
Lower Expression

Abstract It is well known that cadmium (Cd) pollution inhibits plant growth, but how this metal impacts leaf growth processes at the cellular and molecular level is still largely unknown. In the current study, we show that Cd specifically accumulates in the meristematic tissue of the growing maize leaf, while Cd concentration in the elongation zone rapidly declines as the deposition rates diminish and cell volumes increase due to cell expansion. A kinematic analysis shows that, at the cellular level, a lower number of meristematic cells together with a significantly longer cell cycle duration explain the inhibition of leaf growth by Cd. Flow cytometry analysis suggests an inhibition of the G1/S transition, resulting in a lower proportion of cells in the S phase and reduced endoreduplication in expanding cells under Cd stress. Lower cell cycle activity is also reflected by lower expression levels of key cell cycle genes (putative wee1, cyclin-B2-4, and minichromosome maintenance4). Cell elongation rates are also inhibited by Cd, which is possibly linked to the inhibited endoreduplication. Taken together, our results complement studies on Cd-induced growth inhibition in roots and link inhibited cell cycle progression to Cd deposition in the leaf meristem.

Phosphorus nutrition and mycorrhiza effects on grass leaf growth. P status- and size-mediated effects on growth zone kinematics

2006 ◽  
Vol 29 (4) ◽  
pp. 511-520 ◽  
Author(s):  
MONIKA KAVANOVA ◽  
AGUSTIN A. GRIMOLDI ◽  
FERNANDO A. LATTANZI ◽  
HANS SCHNYDER
Keyword(s):  
Leaf Growth ◽  
Growth Zone ◽  
Phosphorus Nutrition ◽  
Mediated Effects

scholarly journals A Local Maximum in Gibberellin Levels Regulates Maize Leaf Growth by Spatial Control of Cell Division

2012 ◽  
Vol 22 (13) ◽  
pp. 1183-1187 ◽  
Author(s):  
Hilde Nelissen ◽  
Bart Rymen ◽  
Yusuke Jikumaru ◽  
Kirin Demuynck ◽  
Mieke Van Lijsebettens ◽  
...  
Keyword(s):  
Cell Division ◽  
Leaf Growth ◽  
Local Maximum ◽  
Spatial Control ◽  
Maize Leaf

scholarly journals Spatial analysis of the rice leaf growth zone under controlled and cadmium-exposed conditions

2020 ◽  
Vol 177 ◽  
pp. 104120 ◽  
Author(s):  
Michiel Huybrechts ◽  
Sophie Hendrix ◽  
Jonas Bertels ◽  
Gerrit T.S. Beemster ◽  
Dries Vandamme ◽  
...  
Keyword(s):  
Spatial Analysis ◽  
Leaf Growth ◽  
Growth Zone ◽  
Rice Leaf

scholarly journals The reduction in maize leaf growth under mild drought affects the transition between cell division and cell expansion and cannot be restored by elevated gibberellic acid levels

2017 ◽  
Vol 16 (2) ◽  
pp. 615-627 ◽  
Author(s):  
Hilde Nelissen ◽  
Xiao-Huan Sun ◽  
Bart Rymen ◽  
Yusuke Jikumaru ◽  
Mikko Kojima ◽  
...  
Keyword(s):  
Cell Division ◽  
Gibberellic Acid ◽  
Cell Expansion ◽  
Leaf Growth ◽  
Maize Leaf ◽  
Mild Drought

scholarly journals Redox homeostasis in the growth zone of the rice leaf plays a key role in cold tolerance

2019 ◽  
Vol 71 (3) ◽  
pp. 1053-1066 ◽  
Author(s):  
Ayelén Gázquez ◽  
Hamada Abdelgawad ◽  
Geert Baggerman ◽  
Geert Van Raemdonck ◽  
Han Asard ◽  
...  
Keyword(s):  
Protein Biosynthesis ◽  
Leaf Growth ◽  
Redox Homeostasis ◽  
Proteome Analysis ◽  
Growth Zone ◽  
Leaf Length ◽  
Enzymatic Antioxidants ◽  
Elongation Zone ◽  
Rice Varieties ◽  
Redox Metabolites

Abstract We analysed the cellular and molecular changes in the leaf growth zone of tolerant and sensitive rice varieties in response to suboptimal temperatures. Cold reduced the final leaf length by 35% and 51% in tolerant and sensitive varieties, respectively. Tolerant lines exhibited a smaller reduction of the leaf elongation rate and greater compensation by an increased duration of leaf growth. Kinematic analysis showed that cold reduced cell production in the meristem and the expansion rate in the elongation zone, but the latter was compensated for by a doubling of the duration of cell expansion. We performed iTRAQ proteome analysis on proliferating and expanding parts of the leaf growth zone. We identified 559 and 542 proteins, of which 163 and 210 were differentially expressed between zones, and 96 and 68 between treatments, in the tolerant and sensitive lines, respectively. The categories protein biosynthesis and redox homeostasis were significantly overrepresented in the up-regulated proteins. We therefore measured redox metabolites and enzyme activities in the leaf growth zone, demonstrating that tolerance of rice lines to suboptimal temperatures correlates with the ability to up-regulate enzymatic antioxidants in the meristem and non-enzymatic antioxidants in the elongation zone.

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