Plant regeneration: cellular origins and molecular mechanisms
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TLDR
This Review article summarizes the current understanding of how plants control various types of regeneration and discusses how developmental and environmental constraints influence these regulatory mechanisms.Abstract:
Compared with animals, plants generally possess a high degree of developmental plasticity and display various types of tissue or organ regeneration. This regenerative capacity can be enhanced by exogenously supplied plant hormones in vitro, wherein the balance between auxin and cytokinin determines the developmental fate of regenerating organs. Accumulating evidence suggests that some forms of plant regeneration involve reprogramming of differentiated somatic cells, whereas others are induced through the activation of relatively undifferentiated cells in somatic tissues. We summarize the current understanding of how plants control various types of regeneration and discuss how developmental and environmental constraints influence these regulatory mechanisms.read more
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Overexpression of SrDXS1 and SrKAH enhances steviol glycosides content in transgenic Stevia plants
TL;DR: This study represents a successful case of genetic manipulation of SGs biosynthetic pathway in Stevia and also demonstrates the potential of metabolic engineering towards producing Stevia with improved SGs yield.
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A Two-Step Model for de novo Activation of WUSCHEL during Plant Shoot Regeneration
Tian-Qi Zhang,Tian-Qi Zhang,Heng Lian,Chuan-Miao Zhou,Lin Xu,Yuling Jiao,Jiawei Wang,Jiawei Wang +7 more
TL;DR: The results provide important insights into the molecular framework for cytokinin-directed shoot regeneration and reveal a two-step mechanism for de novo activation of WUS, the homeodomain transcription factor for Arabidopsis thaliana.
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Type-B ARABIDOPSIS RESPONSE REGULATORs Specify the Shoot Stem Cell Niche by Dual Regulation of WUSCHEL.
Wen Jing Meng,Zhi Juan Cheng,Ya Lin Sang,Miao Miao Zhang,Xiao Fei Rong,Zhi Wei Wang,Ying Ying Tang,Xian Sheng Zhang +7 more
TL;DR: The results reveal a long-standing missing link between cytokinin signaling and WUS regulator, and the findings provide critical information for understanding cell fate specification.
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Wounding Triggers Callus Formation via Dynamic Hormonal and Transcriptional Changes
Momoko Ikeuchi,Akira Iwase,Bart Rymen,Alice Lambolez,Mikiko Kojima,Yumiko Takebayashi,Jefri Heyman,Shunsuke Watanabe,Mitsunori Seo,Lieven De Veylder,Hitoshi Sakakibara,Keiko Sugimoto +11 more
TL;DR: Novel mechanistic insights are provided into how wounding reactivates cell proliferation during callus formation in Arabidopsis.
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Callus, Dedifferentiation, Totipotency, Somatic Embryogenesis: What These Terms Mean in the Era of Molecular Plant Biology?
TL;DR: The main aim of this review is to provide a theoretical framework supported by recent experimental findings to reconsider certain historical, even dogmatic, statements widely used by plant scientists and teachers such as “plant cells are totipotent” or “callus is a mass of dedifferentiated cells,”or “somatic embryos have a single cell origin.”
References
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Book
Plant Propagation by Tissue Culture
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Journal Article
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F Skoog,C O Miller +1 more
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TL;DR: The transition from the juvenile to the adult phase of shoot development in plants is accompanied by changes in vegetative morphology and an increase in reproductive potential, and the regulatory mechanism is described, which is mediated by sequentially operating miRNAs.
Journal ArticleDOI
Agrobacterium tumefaciens-mediated transformation of Arabidopsis thaliana root explants by using kanamycin selection.
TL;DR: A transformation procedure for Arabidopsis root explants based on kanamycin selection was established and an Agrobacterium tumor-inducing Ti plasmid carrying a chimeric neomycin phosphotransferase II gene (neo) was introduced, resulting in transformed seed-producing plants obtained with an efficiency between 20% and 80% within 3 months after gene transfer.
Journal ArticleDOI
Genes involved in organ separation in Arabidopsis: an analysis of the cup-shaped cotyledon mutant.
TL;DR: Phenotypes of the mutants suggest a common mechanism for separating adjacent organs within the same whorl in both embryos and flowers.
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