scholarly journals Vegetative axillary bud dormancy induced by shade and defoliation signals in the grasses

2010 ◽  
Vol 5 (3) ◽  
pp. 317-319 ◽  
Author(s):  
Tesfamichael H Kebrom ◽  
Thomas P Brutnell ◽  
Dirk B Hays ◽  
Scott A Finlayson
Keyword(s):  
Bud Dormancy ◽  
Axillary Bud

scholarly journals BRANCHED1 Promotes Axillary Bud Dormancy in Response to Shade in Arabidopsis

2013 ◽  
Vol 25 (3) ◽  
pp. 834-850 ◽  
Author(s):  
Eduardo González-Grandío ◽  
César Poza-Carrión ◽  
Carlos Oscar S. Sorzano ◽  
Pilar Cubas
Keyword(s):  
Bud Dormancy ◽  
Axillary Bud

Relationship Between Thermoinduction and Photoinduction of Flowering and Dormancy in Hordeum bulbosum L., a Perennial Grass

1974 ◽  
Vol 1 (2) ◽  
pp. 259 ◽  
Author(s):  
M Ofir ◽  
D Koller
Keyword(s):  
Shoot Apex ◽  
Perennial Grass ◽  
Reproductive Development ◽  
Leaf Primordia ◽  
Bud Dormancy ◽  
Axillary Bud ◽  
Hordeum Bulbosum ◽  
Vegetative Development ◽  
Full Expression ◽  
Number Of Leaves

Induction of axillary bud dormancy (as manifested by initiation of the bulb which is associated with the dormant buds) and of reproductive development in H. bulbosum are closely linked processes. Both are potentiated by thermoinduction (vernalization of the seed) and express themselves as a result of subsequent photoinduction in long (16-h) photoperiods. Partial photoinduction of vernalized plants, which sufficed for bulb initiation, was insufficient for full expression of flowering: the reproductive development of the shoot apex was arrested and reverted to vegetative development. This was terminated by formation of a second bulb and a normal inflorescence, both typical of non- induced plants. Intercalation of as many as 30 short (8-h) photoperiods after the end of thermoinduction did not diminish the developmental response of the shoot apex to subsequent photo- induction. On the contrary, intercalation of short photoperiods after vernalization increased the effectiveness of subsequent photoinduction, with respect to the bulb-forming response and to the reproductive development of the shoot apex. Both photoperiodic regimes in this sequence were effective in promoting bulb initiation, However, effectiveness of short photoperiods was much smaller than that of long photoperiods and was progressively decreasing as their number increased. The position of the bulb internode showed remarkable parallelism with the number of leaves which had emerged by the start of photoinduction, but the intensity of photoinduction had no effect. No parallelism was found with the total number of leaves produced by the apex (i.e. including leaf primordia). The significance of these results is discussed.

scholarly journals A gene regulatory network critical for axillary bud dormancy directly controlled by Arabidopsis BRANCHED1

2020 ◽  
Author(s):  
Sam W. van Es ◽  
Aitor Muñoz-Gasca ◽  
Francisco J. Romero-Campero ◽  
Eduardo González-Grandío ◽  
Pedro de los Reyes ◽  
...  
Keyword(s):  
Crop Production ◽  
Target Genes ◽  
Growth Inhibitor ◽  
Bud Dormancy ◽  
Axillary Bud ◽  
Genes Encoding ◽  
Bud Growth ◽  
Axillary Bud Growth ◽  
Potent Growth ◽  
Potent Growth Inhibitor

AbstractThe control of branch outgrowth is critical for plant fitness, stress resilience and crop yield. The Arabidopsis thaliana transcription factor BRANCHED1 (BRC1) plays a pivotal role in this process as it integrates signals that inhibit axillary bud growth to control shoot branching. Despite the remarkable activity of BRC1 as a potent growth inhibitor, the mechanisms by which it promotes and maintains bud dormancy are still largely unknown.Here we combine ChIP-seq, transcriptomic and systems biology approaches to characterise the BRC1-regulated gene network. We identify a group of BRC1 direct target genes encoding transcription factors (BTFs) that orchestrate, together with BRC1, an intricate transcriptional network enriched in abscisic acid signalling components. The BRC1 network is enriched in feed-forward loops and feed-back loops, robust against noise and mutation, reversible in response to stimuli, and stable once established. This knowledge is fundamental to adapt plant architecture and crop production to ever-changing environmental conditions.

scholarly journals Developmental analysis of the early steps in strigolactone‐mediated axillary bud dormancy in rice

2019 ◽  
Vol 97 (6) ◽  
pp. 1006-1021 ◽  
Author(s):  
Le Luo ◽  
Megumu Takahashi ◽  
Hiromu Kameoka ◽  
Ruyi Qin ◽  
Toshihide Shiga ◽  
...  
Keyword(s):  
Bud Dormancy ◽  
Axillary Bud ◽  
Developmental Analysis

scholarly journals Interplay among Antioxidant System, Hormone Profile and Carbohydrate Metabolism during Bud Dormancy Breaking in a High-Chill Peach Variety

Antioxidants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 560
Author(s):  
José A. Hernández ◽  
Pedro Díaz-Vivancos ◽  
José Ramón Acosta-Motos ◽  
Nuria Alburquerque ◽  
Domingo Martínez ◽  
...  
Keyword(s):  
Starch Content ◽  
Sugar Metabolism ◽  
Bud Dormancy ◽  
Dormancy Breaking ◽  
Prunus Species ◽  
Physiological Factors ◽  
Antioxidant Metabolism ◽  
Hormone Profile ◽  
Aba Content ◽  
Gas Ratio

(1) Background: Prunus species have the ability to suspend (induce dormancy) and restart growth, in an intricate process in which environmental and physiological factors interact. (2) Methods: In this work, we studied the evolution of sugars, antioxidant metabolism, and abscisic acid (ABA) and gibberellins (GAs) levels during bud dormancy evolution in a high-chill peach variety, grown for two seasons in two different geographical areas with different annual media temperature, a cold (CA) and a temperate area (TA). (3) Results: In both areas, starch content reached a peak at ecodormancy, and then decreased at dormancy release (DR). Sorbitol and sucrose declined at DR, mainly in the CA. In contrast, glucose and fructose levels progressively rose until DR. A decline in ascorbate peroxidase, dehydroascorbate reductase, superoxide dismutase and catalase activities occurred in both seasons at DR. Moreover, the H2O2-sensitive SOD isoenzymes, Fe-SOD and Cu,Zn-SOD, and two novel peroxidase isoenzymes, were detected. Overall, these results suggest the occurrence of a controlled oxidative stress during DR. GA7 was the major bioactive GA in both areas, the evolution of its levels being different between seasons and areas. In contrast, ABA content decreased during the dormancy period in both areas, resulting in a reduction in the ABA/total GAs ratio, being more evident in the CA. (4) Conclusion: A possible interaction sugars-hormones-ROS could take place in high-chill peach buds, favoring the DR process, suggesting that, in addition to sugar metabolism, redox interactions can govern bud DR, regardless of chilling requirements.

Sucrose Mobilisation in Sugarcane Stalk Induced by Heterotrophic Axillary Bud Growth

2012 ◽  
Vol 5 (2) ◽  
pp. 173-182 ◽  
Author(s):  
Brian P. O’Neill ◽  
Matthew P. Purnell ◽  
David J. Anderson ◽  
Lars K. Nielsen ◽  
Stevens M. Brumbley
Keyword(s):  
Axillary Bud ◽  
Sugarcane Stalk ◽  
Bud Growth ◽  
Axillary Bud Growth ◽  
Sucrose Mobilisation

Gibberellins and the break of bud dormancy in virus-infected stem cuttings ofEuphorbia pulcherrima

1979 ◽  
Vol 35 (10) ◽  
pp. 1328-1329 ◽  
Author(s):  
S. Nath ◽  
C. L. Mandahar ◽  
A. Gulati
Keyword(s):  
Bud Dormancy ◽  
Stem Cuttings
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