scholarly journals Genetic and epigenetic control of plant growth and development. Genes of auxin biosynthesis and auxin-regulated genes controlling plant cell division and extension

2005 ◽  
Vol 21 (2) ◽  
pp. 107-133 ◽  
Author(s):  
V. A. Tsygankova ◽  
L. A. Galkina ◽  
L. I. Musatenko ◽  
K. M. Sytnik
2019 ◽  
Vol 24 (1) ◽  
pp. 6-9 ◽  
Author(s):  
Bingsheng Lv ◽  
Zhenwei Yan ◽  
Huiyu Tian ◽  
Xiansheng Zhang ◽  
Zhaojun Ding

2015 ◽  
Vol 112 (15) ◽  
pp. 4821-4826 ◽  
Author(s):  
Bing Wang ◽  
Jinfang Chu ◽  
Tianying Yu ◽  
Qian Xu ◽  
Xiaohong Sun ◽  
...  

The phytohormone auxin regulates nearly all aspects of plant growth and development. Tremendous achievements have been made in elucidating the tryptophan (Trp)-dependent auxin biosynthetic pathway; however, the genetic evidence, key components, and functions of the Trp-independent pathway remain elusive. Here we report that the Arabidopsis indole synthase mutant is defective in the long-anticipated Trp-independent auxin biosynthetic pathway and that auxin synthesized through this spatially and temporally regulated pathway contributes significantly to the establishment of the apical–basal axis, which profoundly affects the early embryogenesis in Arabidopsis. These discoveries pave an avenue for elucidating the Trp-independent auxin biosynthetic pathway and its functions in regulating plant growth and development.


2007 ◽  
Vol 49 (4) ◽  
pp. 629-640 ◽  
Author(s):  
Jie Yang ◽  
Harjinder S. Sardar ◽  
Kathleen R. McGovern ◽  
Yizhu Zhang ◽  
Allan M. Showalter

Author(s):  
Aarón Giovanni Munguía-Rodríguez ◽  
Jesús Salvador López-Bucio ◽  
León Francisco Ruiz-Herrera ◽  
Randy Ortiz-Castro ◽  
Ángel Arturo Guevara-García ◽  
...  

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 133 ◽  
Author(s):  
Samantha K. Powers ◽  
Lucia C. Strader

As a prominent regulator of plant growth and development, the hormone auxin plays an essential role in controlling cell division and expansion. Auxin-responsive gene transcription is mediated through the TRANSPORT INHIBITOR RESPONSE1/AUXIN SIGNALING F-BOX (TIR1/AFB) pathway. Roles for TIR1/AFB pathway components in auxin response are understood best, but additional factors implicated in auxin responses require more study. The function of these factors, including S-Phase Kinase-Associated Protein 2A (SKP2A), SMALL AUXIN UP RNAs (SAURs), INDOLE 3-BUTYRIC ACID RESPONSE5 (IBR5), and AUXIN BINDING PROTEIN1 (ABP1), has remained largely obscure. Recent advances have begun to clarify roles for these factors in auxin response while also raising additional questions to be answered.


2021 ◽  
Vol 12 ◽  
Author(s):  
Kathryn E. McIntyre ◽  
Daniel R. Bush ◽  
Cristiana T. Argueso

Cytokinins are plant hormones known for their role in mediating plant growth. First discovered for their ability to promote cell division, this class of hormones is now associated with many other cellular and physiological functions. One of these functions is the regulation of source-sink relationships, a tightly controlled process that is essential for proper plant growth and development. As discovered more recently, cytokinins are also important for the interaction of plants with pathogens, beneficial microbes and insects. Here, we review the importance of cytokinins in source-sink relationships in plants, with relation to both carbohydrates and amino acids, and highlight a possible function for this regulation in the context of plant biotic interactions.


2015 ◽  
Vol 58 ◽  
pp. 61-70 ◽  
Author(s):  
Paul B. Larsen

Ethylene is the simplest unsaturated hydrocarbon, yet it has profound effects on plant growth and development, including many agriculturally important phenomena. Analysis of the mechanisms underlying ethylene biosynthesis and signalling have resulted in the elucidation of multistep mechanisms which at first glance appear simple, but in fact represent several levels of control to tightly regulate the level of production and response. Ethylene biosynthesis represents a two-step process that is regulated at both the transcriptional and post-translational levels, thus enabling plants to control the amount of ethylene produced with regard to promotion of responses such as climacteric flower senescence and fruit ripening. Ethylene production subsequently results in activation of the ethylene response, as ethylene accumulation will trigger the ethylene signalling pathway to activate ethylene-dependent transcription for promotion of the response and for resetting the pathway. A more detailed knowledge of the mechanisms underlying biosynthesis and the ethylene response will ultimately enable new approaches to be developed for control of the initiation and progression of ethylene-dependent developmental processes, many of which are of horticultural significance.


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