Divergent Recurrent Selection for Vegetative Phase Change and Effects on Agronomic Traits and Corn Borer Resistance

Crop Science ◽  
2008 ◽  
Vol 48 (5) ◽  
pp. 1723-1731 ◽  
Author(s):  
E. S. Riedeman ◽  
M. A. Chandler ◽  
W. F. Tracy
Keyword(s):  
Phase Change ◽  
Recurrent Selection ◽  
Agronomic Traits ◽  
Corn Borer ◽  
Vegetative Phase ◽  
Vegetative Phase Change ◽  
Selection For ◽  
Divergent Recurrent Selection

Divergent Selection for Vegetative Phase Change in Maize and Indirect Effects on Response to

Crop Science ◽  
2008 ◽  
Vol 48 (3) ◽  
pp. 992 ◽  
Author(s):  
C. F. Basso ◽  
M. M. Hurkman ◽  
E. S. Riedeman ◽  
W. F. Tracy
Keyword(s):  
Phase Change ◽  
Indirect Effects ◽  
Divergent Selection ◽  
Vegetative Phase ◽  
Vegetative Phase Change ◽  
Selection For

scholarly journals Sugar promotes vegetative phase change in Arabidopsis thaliana by repressing the expression of MIR156A and MIR156C

eLife ◽  
2013 ◽  
Vol 2 ◽  
Author(s):  
Li Yang ◽  
Mingli Xu ◽  
Yeonjong Koo ◽  
Jia He ◽  
R Scott Poethig
Keyword(s):  
Arabidopsis Thaliana ◽  
Phase Change ◽  
Nutrient Availability ◽  
Developmental Timing ◽  
Vegetative Phase ◽  
Adult Transition ◽  
Vegetative Phase Change ◽  
Exogenous Glucose ◽  
Exogenous Sugar ◽  
Signaling Activity

Nutrients shape the growth, maturation, and aging of plants and animals. In plants, the juvenile to adult transition (vegetative phase change) is initiated by a decrease in miR156. In Arabidopsis, we found that exogenous sugar decreased the abundance of miR156, whereas reduced photosynthesis increased the level of this miRNA. This effect was correlated with a change in the timing of vegetative phase change, and was primarily attributable to a change in the expression of two genes, MIR156A and MIR156C, which were found to play dominant roles in this transition. The glucose-induced repression of miR156 was dependent on the signaling activity of HEXOKINASE1. We also show that the defoliation-induced increase in miR156 levels can be suppressed by exogenous glucose. These results provide a molecular link between nutrient availability and developmental timing in plants, and suggest that sugar is a component of the leaf signal that mediates vegetative phase change.

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